Article
Medicine, Research & Experimental
Hironori Suzuki, Masahito Matsushima, Masataka Ito, Shuji Noguchi
Summary: Sulfur K-edge X-ray absorption near-edge spectroscopy (XANES) can be used to distinguish crystal polymorphs of active pharmaceutical ingredients (APIs) containing sulfur atoms. The shape of XANES spectra is influenced by the C-S-C bond angle of molecules and intermolecular hydrogen bonds and S-S interaction, while the peak energy values can vary with hydrogen bonds and S-S interaction. Linear combination fitting of XANES spectra can quantify the ratio of crystal forms in mixed powders, demonstrating the utility of XANES measurements for evaluating crystal polymorphism in pharmaceutical formulations containing sulfur atoms.
MOLECULAR PHARMACEUTICS
(2022)
Article
Chemistry, Physical
Jar Jutimoosik, Pinit Kidkhunthod, Theerachai Bongkarn, Rattikorn Yimnirun
Summary: The study found that single cubic spinel phase was formed in prepared Mn1-xZnxFe2O4 powders, with the average crystallite size decreasing as zinc concentration increased. XANES measurements showed the oxidation states of Fe and Zn ions in doped samples, with Fe at +3 and Zn at +2.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
Valentina Bonanni, Alessandra Gianoncelli
Summary: Scanning transmission X-ray microscopy (STXM) allows imaging of biological specimens and collection of localized spectroscopic information through X-ray fluorescence (XRF) and/or X-ray Absorption Near Edge Spectroscopy (XANES). Recent publications in synchrotrons have utilized soft X-ray spectro-microscopy in life science and environmental research to explore complex metabolic mechanisms by tracing chemical elements involved in metabolic pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Geochemistry & Geophysics
Sidney R. Hemming, Tanzhuo Liu, Paul Northrup, Sarah Nicholas, E. Troy Rasbury, Heng Chen, Alice Warden, Amanda Chen, Ruipeng Li, Ryan Tappero, Stephen E. Cox, Jenna Everard, Silu Wang, Michael Deluca, Benjamin Bostick, Alexander N. Halliday
Summary: The K/Ar chronology of glauconite pellets, a method used to directly date marine sedimentary deposits, is improved by using synchrotron radiation to characterize individual pellets and measure the argon and potassium. The results show that the radiogenic argon concentration underestimates the values for individual visually mature pellets, and the determined K/Ar age is 6% older than the reference value and in agreement with constraints from U-Pb dating.
Article
Medicine, Research & Experimental
Hironori Suzuki, Moemi Iwata, Masataka Ito, Shuji Noguchi
Summary: Chlorine K-edge X-ray absorption near-edge spectroscopy (XANES) was used to characterize crystal polymorphs of active pharmaceutical ingredients (APIs) containing chloride atoms and their amorphous solid dispersions (ASDs). Unique XANES spectra shapes were found for different crystal forms of Indomethacin (IMC), indicating distinct intermolecular interactions. XANES measurements detected weak interatomic interactions and monitored the transformation of IMC crystal forms, showing its potential as a novel approach for evaluating crystal polymorphs of APIs and crystalline states in ASDs.
MOLECULAR PHARMACEUTICS
(2021)
Article
Engineering, Environmental
Yuqin Sun, Jing Sun, Athena A. Nghiem, Benjamin C. Bostick, Tyler Ellis, Long Han, Zengyi Li, Songlin Liu, Shuangbao Han, Miao Zhang, Yu Xia, Yan Zheng
Summary: The study used high-resolution spectroscopy techniques in combination with groundwater composition and metagenomics measurements to investigate the oxidation states of arsenic and iron in sediments from the Yinchuan Plain in northwest China. Results showed that at shallower depths, sediments contained high levels of As(V), As(III), and Fe(III) (hydr)oxides, while at deeper depths, sediments were enriched in As(V), As(III), and Fe(III) (hydr)oxides, despite high As(III) concentrations in groundwater. The study supports active arsenic and iron reduction processes based on the contrast between the dominant forms of arsenic in groundwater and sediment, as well as the decreasing concentrations of sediment As(V) and Fe(III) (hydr)oxides with depth.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Xingwen Lu, Wang Xu, Qinghuai Zeng, Weizhen Liu, Fei Wang
Summary: This study investigates the influence of nickel concentrations on struvite precipitation and finds that the purity of struvite decreases with increasing nickel concentrations. Nickel forms different compounds with struvite depending on its concentration, including nickel hydroxide, nickel phosphate, and nickel-struvite.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
S. Kazim, D. Mastrippolito, P. Moras, M. Jugovac, T. Klimczuk, M. Ali, L. Ottaviano, R. Gunnella
Summary: We investigated the challenging CrCl3 surface using photon energy dependent photoemission (PE). By studying the core and valence electrons of cleaved single crystals in either ultra-high vacuum (UHV) or air, we confirmed the atomic composition with respect to the expected bulk atomic structure. The presence of a stable, but only partially ordered Cl-O-Cr surface was revealed by a common spectroscopic denominator. Through analysis of multiplet components, we quantified the electron charge transfer and the reduced crystal field due to the established polarization field. The methodology used in this study can have a significant impact on determining the structure of ordered sub-oxide phases in mono or bi-layer Cr trihalides.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Jinling Gao, Huige Zhou, Yanjie Zhao, Lin Lu, Jianzhong Zhang, Wenting Cheng, Xuxia Song, Yuxin Zheng, Chunying Chen, Jinglong Tang
Summary: The metabolism of ultrasmall superparamagnetic iron oxide nanoparticles (USPIO) in cells can induce ferroptosis, characterized by the transformation of iron oxide to ferritin, down-regulation of intracellular GPX4, and accumulation of lipid peroxide. These findings provide insight into the time-dependent process of ferroptosis activation involving iron overload and lipid peroxidation in the cell membrane.
Article
Chemistry, Analytical
Michal Nowakowski, Aleksandr Kalinko, Jakub Szlachetko, Rafal Fanselow, Matthias Bauer
Summary: This study utilized high energy resolution off-resonant spectroscopy to determine the binding energies of Fe-based materials and correlate them to their physical oxidation state. The results were compared with classical X-ray absorption, X-ray emission, and photoelectron spectroscopies. Differences in binding energies were discussed.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Lifo Ruan, Haijing Li, Jiayu Zhang, Mengxue Zhou, Hui Huang, Juncai Dong, Jinxia Li, Feng Zhao, Zhonghua Wu, Jun Chen, Zhifang Chai, Yi Hu
Summary: Iron oxide nanoparticles (IONPs) are widely used in biomedical research, but their subcellular transformation and biological effects are not well understood. In this study, we prepared three types of IONPs, including those targeting mitochondria (IONP-TPP) and lysosomes (IONP-APM), and a control group with no specific target (IONP). Results showed that mitochondria-targeted IONP-TPP induced significant cytotoxicity and mitochondrial membrane depolarization in MCF-7 cells. X-ray absorption spectroscopy (XAS) analysis revealed remarkable edge defects and oxidation of IONP-TPP inside the cell. These findings highlight the potential chemical transformation of IONPs at mitochondria and the vulnerability of mitochondria to IONP accumulation.
Article
Environmental Sciences
Chihiro Miyamoto, Yoshinori Iizuka, Sumito Matoba, Shohei Hattori, Yoshio Takahashi
Summary: By examining calcium species in the aerosol particles trapped in an ice core, this study found that gypsum content was higher in recent layers compared to older layers, while calcite fraction showed the opposite trend. The increased gypsum content was consistent with the increase of sulfur dioxide emission in China. The results indicate that the calcium species in dust trapped in the ice core can serve as a good indicator of the long-term variation of sulfur dioxide emission in the region.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Environmental Sciences
Stefania Diquattro, Paola Castaldi, Susie Ritch, Albert L. Juhasz, Gianluca Brunetti, Kirk G. Scheckel, Giovanni Garau, Enzo Lombi
Summary: The study found that long-term ageing reduced the mobility of Sb in soil, decreased its potential bioavailability, and lowered its bioaccessibility over time. Soil pH plays a key role in Sb potential bioavailability, with acidic conditions enhancing the effectiveness of ageing processes in alleviating Sb ecotoxicity. Despite 700 days of ageing, substantial risks of Sb mobility, potential bioavailability, and bioaccessibility remained in contaminated soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Crystallography
Olesia Voloshyna, Mikhail V. Gorbunov, Daria Mikhailova, Andrey Maljuk, Silvia Seiro, Bernd Buechner
Summary: The flux growth of InVO4 bulk single crystals has been successfully explored for the first time, resulting in small-sized and high-quality crystals that are suitable for further study of their physical properties.
Article
Materials Science, Multidisciplinary
Alexei Kuzmin, Milena Dile, Katrina Laganovska, Aleksejs Zolotarjovs
Summary: Undoped and Mn-doped ZnS nanocrystals were synthesized and characterized. The substitution of Mn ions for Zn ions in ZnS nanocrystals led to changes in lattice parameters and interatomic distances. Photoluminescence spectroscopy showed a shift in emission peak due to Mn doping in ZnS nanocrystals.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Ying-Rui Lu, K. Thanigai Arul, Da-Hua Wei, Cheng-Jie Yang, Yu-Cheng Huang, Chi-Liang Chen, Jeng-Lung Chen, Chung-Li Dong, Wu-Ching Chou
Summary: The study indicates the potential application of gasochromic bare and Mo-V2O5 thin films in smart windows and their relationship between transmittance and color states. Through in situ XAS analysis, the coloration mechanism is deeply explored from the perspectives of atomic and electronic structures, paving the way for the development of advanced chromogenic smart windows.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wei-Hsiang Huang, Chin-Jung Lin, Tsung-Han Huang, Chia-Yu Chang, Shu-Chih Haw, Hwo-Shuenn Sheu, Shih-Yun Chen, Chung-Li Dong, Krishna Kumar, Bing Joe Hwang, Wei-Nien Su, Chi-Liang Chen
Summary: In this study, Fe(III) ions were incorporated into TiO2 hollow submicrospheres, which served as an excellent photocatalyst. The experimental parameters such as flow rate, rotation speed, and contaminant concentration were found to improve the catalyst activity. Fe-TiO2 hollow submicrospheres with different Fe wt% were prepared, and it was discovered that 2.5 wt% Fe-TiO2 exhibited the best photocatalyst activity. The Fe(III) doping not only increased the interaction between transition metal (Fe and Ti) 3d orbitals in TiO2, but also promoted the Fe(III)/Fe(II) redox kinetics and the associated photo-Fenton degradation of acetaminophen.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Suh-Ciuan Lim, Chao -Lung Chiang, Chun-Kuo Peng, Wen-Bin Wu, Yu-Chang Lin, Yu-Ru Lin, Chi-Liang Chen, Yan-Gu Lin
Summary: In this study, a highly active, durable, and cost-efficient bifunctional catalyst Co@CoMoOx-alpha-CrOOH was synthesized for electrochemical water splitting. The catalyst showed remarkable catalytic activity and stability, making it a sustainable strategy for water-splitting applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Bo-Yan Chen, Galina Dobele, Ance Plavniece, Aleksandrs Volperts, Loreta Tamasauskaite-Tamasiunaite, Eugenijus Norkus, Chi-Liang Chen, Yu-Chuan Lin
Summary: K-doped FeCx catalysts derived from the carbothermal reduction of the Fe-chitosan complex were investigated for the hydrogenation of CO2 to light olefins. Catalyst characterization and performance evaluation revealed a correlation between the physicochemical properties of the catalysts and their catalytic activities. Mechanistic studies identified various carbonate and formate species as intermediates involved in C2-6= synthesis. The most active catalyst, FeK@CS-(0.5)-py, exhibited the highest space-time yield of C-2-6(-) (13.7 mu mol(C2-6=)/g(Fe)/s).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Yuanjie Zheng, Peng Wang, Wei-Hsiang Huang, Chi-Liang Chen, Yanyan Jia, Sheng Dai, Tan Li, Yun Zhao, Yongcai Qiu, Geoffrey I. N. Waterhouse, Guangxu Chen
Summary: Electrochemical production of H2O2 is an eco-friendly and cost-effective method. Metal-doped carbon-based catalysts are commonly used for 2e-ORR due to their high selectivity. The role of metals and carbon defects in H2O2 production is still unclear. This study obtained a Co-N/O-C catalyst with a Faradaic efficiency greater than 90% in alkaline electrolyte by varying the Co loading in the pyrolysis precursor. Detailed studies revealed that carbon atoms in C-O-C groups at defect sites were the active sites for 2e-ORR in the Co-N/O-C catalysts. The direct contribution of cobalt single atom sites and metallic Co for the 2e-ORR performance was negligible, but Co played an important role in the pyrolytic synthesis of the catalyst.
Article
Chemistry, Multidisciplinary
Chih-Hao Hsu, Wei-Hsiang Huang, Chin-Jung Lin, Chun-Hao Huang, Yi-Che Chen, Krishna Kumar, Yan-Gu Lin, Chung-Li Dong, Maw-Kuen Wu, Bing Joe Hwang, Wei-Nien Su, Shih-Yun Chen, Chi-Liang Chen
Summary: Carbon@titania yolk-shell nanostructures are successfully synthesized and used as a photocatalyst to degrade acetaminophen. The presence of residual carbon nanospheres is found to improve the photocatalytic efficiency. X-ray absorption spectroscopy analysis reveals the structural and electronic changes in the hollow shell. In situ XAS measurements show that the existence of amorphous carbon nanospheres inhibits the recombination of electron-hole pairs, leading to enhanced photodegradation of acetaminophen. Charge transfer from TiO2 to carbon nanospheres reduces electron-hole recombination and increases photocatalytic efficiency.
Article
Materials Science, Multidisciplinary
Yingmin Wang, Wantong Zhao, Jianbing Qiang, Shao-Bo Mi, Chi-Liang Chen, Wei-Hsiang Huang, Chung-Kai Chang, Yu-Chun Chuang, Yong-Mook Kang, Fazhu Ding, Jiliang Zhang
Summary: Anode materials of metal oxides based on conversion reaction in lithium-ion batteries usually have a higher capacity than commercial graphite anodes, and the porous forms of the materials can effectively reduce the volume change during (de)lithiation. This study focuses on tetragonal gamma-Fe2O3 as a representative intrinsic nano-porous metal oxide anode material. The structural evolution of gamma-Fe2O3 not only contributes to the understanding of conversion reactions of vacancy-ordered metal oxides, but also provides a new method for the fabrication of twinning structures in metal oxides, including cathode materials.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yizhe Liu, Xintong Li, Shoufeng Zhang, Zilong Wang, Qi Wang, Yonghe He, Wei-Hsiang Huang, Qidi Sun, Xiaoyan Zhong, Jue Hu, Xuyun Guo, Qing Lin, Zhuo Li, Ye Zhu, Chu-Chen Chueh, Chi-Liang Chen, Zhengtao Xu, Zonglong Zhu
Summary: A molecularly engineered MOF system based on mercaptan-metal links has been designed, demonstrating excellent electroconductivity and efficient electrocatalytic oxygen evolution reaction (OER) performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Dien-Thien To, Joon Ching Juan, Meng-Hsuan Tsai, Chia-Hsin Wang, Chih-Wen Pao, Chi-Liang Chen, Yu-Chuan Lin
Summary: FeCx catalysts were synthesized by co-pyrolyzing iron nitrate with various CN sources. The Fe-d-C3N4-(0.3)-Py catalyst exhibited the highest CO2 conversion, olefin yield, and olefin STY, attributed to its high surface FeCx concentration. A correlation between surface FeCx and hydrocarbon/olefin STY was established.
CATALYSIS SURVEYS FROM ASIA
(2023)
Article
Energy & Fuels
Qidi Sun, Yizhe Liu, Xintong Li, Xuyun Guo, Wei-Hsiang Huang, Ye Zhu, Zilong Wang, Chu-Chen Chueh, Chi-Liang Chen, Yung-Kang Peng, Zonglong Zhu
Summary: In this study, an active iron-doped ceria (FeOx/CeO2) catalyst with a highly disordered feature decorated on three-dimensional nickel foam is reported, which can serve as the superior OER electrode in alkaline media. The Fe-doped CeO2 catalyst displays remarkable OER performance with a low overpotential of 252mV to achieve 10mA/cm2, a small Tafel slope of 45mV/dec, and long-term durability for at least 48 hours. The superior OER activity of FeOx/CeO2 is attributed to the lattice oxygen activation mechanism facilitated by its disordered structure and high electrochemical surface area.
Article
Engineering, Environmental
Yanan Chong, Tingyu Chen, Yifei Li, Jiajin Lin, Wei-Hsiang Huang, Chi-Liang Chen, Xiaojing Jin, Mingli Fu, Yun Zhao, Guangxu Chen, Jiake Wei, Yongcai Qiu, Geoffrey I. N. Waterhouse, Daiqi Ye, Zhang Lin, Lin Guo
Summary: Enhancing oxygen activation through defect engineering is an effective strategy for boosting catalytic oxidation performance. The study demonstrates that quenching is an effective strategy for preparing defect-rich Pt/metal oxide catalysts with superior catalytic oxidation activity. The quenching process creates abundant lattice defects and lattice dislocations in the support, promoting stronger electronic interactions between Pt species and the support, leading to higher oxidation Pt species generation for modulating the adsorption/desorption behavior of reactants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Spectroscopy
Yu-Cheng Huang, Jie Chen, Ying-Rui Lu, K. Thanigai Arul, Takuji Ohigashi, Jeng-Lung Chen, Chi-Liang Chen, Shaohua Shen, Wu-Ching Chou, Way-Faung Pong, Chung-Li Dong
Summary: The use of carbon nitride-based materials and light for catalytic water splitting has great potential for hydrogen production. This study explores the processes of molecular conjugation, nucleation, and crystallization in crystalline carbon nitride to enhance photocatalytic activity. The addition of cobalt salts in ionothermal synthesis promotes the phase transition of carbon nitride, resulting in a cobalt-doped heterojunction. Synchrotron-based X-ray spectroscopy and microscopy confirm the improved performance of the cobalt-doped heterojunction in the photocatalytic hydrogen evolution reaction. This study highlights the potential of synchrotron X-ray spectroscopy for designing materials to enhance photocatalytic activity in solar energy conversion.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Chemistry, Multidisciplinary
Yu-Cheng Huang, Yanrui Li, K. Thanigai Arul, Takuji Ohigashi, Ta Thi Thuy Nga, Ying-Rui Lu, Chi-Liang Chen, Jeng-Lung Chen, Shaohua Shen, Way-Faung Pong, Chung-Li Dong, Wu-Ching Chou
Summary: This study demonstrates that the introduction of a single nickel atom into g-C3N4 can significantly enhance the efficiency of photocatalytic water splitting into hydrogen and hydrogen peroxide, without the need for additional cocatalysts. The improved performance is attributed to the adjustment of atomic and electronic structures of g-C3N4 by a new hybrid orbital, which enhances visible light absorption and promotes the separation and transfer of photogenerated charge carriers. This study provides a promising material design for promoting photocatalytic activity in solar energy conversion applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Chusnul Khotimah, Fu-Ming Wang, Margret Wohlfahrt-Mehrens, Jeng-Kuei Chang, Jeng-Yu Lin, Chia-Chin Chang, Rio Akbar Yuwono, Sylvia Ayu Pradanawati, Nan-Hung Yeh, Chun-Chuan Hsu, Pei-Wan Lester Tiong, Jeng-Lung Chen, Shu-Chih Haw, Chih-Wen Pao, Chi-Liang Chen, Jyh-Fu Lee, Ting-Shan Chan, Hwo-Shuenn Sheu, Jin-Ming Chen, Alagar Ramar
Summary: This study investigates the effects of different morphologies of LNMO primary particles on the electrochemical performance. Rectangular-shaped LNMO with higher surface energy exhibits stable electrochemical reaction and excellent performance, while pentahedron-shaped LNMO with lower surface energy causes gas evolution and loss in cycle retention. The addition of a lithium salt additive can regulate the valence states of Ni and Mn ions, leading to improved electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
K. Trangwachirachai, A. -l. Huang, H. -K. Chen, C. -L. Chen, J. -F. Lee, H. -K. Tian, Y. -C. Lin
Summary: The reduction of GaN using different carriers was investigated and tested for methane conversion to acetonitrile. The highest ammonia and ACN productivities were obtained using 5 wt% GaN on HZ. The N-Ga interaction was weakened due to the presence of a neighboring Bronsted acid, and rejuvenation of activity could be achieved through a renitridation step. The (001) side surface of GaN was found to be important in the conversion of methane to ACN.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
