Article
Chemistry, Multidisciplinary
Yeonhoo Kim, Dongheun Kim, Eric Auchter, Justin Marquez, Roxanne Tutchton, Nan Li, Ting S. Luk, Enkeleda Dervishi, Yong-Jin Kim, Jian-Xin Zhu, Jinkyoung Yoo
Summary: This study reports the recycling of monolayer graphene as a growth template for the synthesis of ZnO nanowires, demonstrating its reusability through multiple growth cycles. The chemical robustness of graphene maintains the quality of nanowire growth and presents graphene as a multifunctional growth template for various nanomaterials.
Article
Chemistry, Physical
Satish Yadav, Mohit Chandra, R. Rawat, Ashish Khandelwal, L. S. Sharath Chandra, R. J. Choudhary, Vasant Sathe, A. K. Sinha, Kiran Singh
Summary: Co4Nb2O9 (CNO) is an interesting magnetoelectric material, and in this study, comprehensive temperature-dependent properties including structural, phonon, dielectric, and magnetic aspects were reported. The results show that CNO exhibits dielectric transition and magnetoelastic coupling at the antiferromagnetic ordering temperature (T-N).
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Mingming Yang, Longlong Wang, Guofeng Hu, Xue Chen, Peng Lai Gong, Xin Cong, Yi Liu, Yuanbo Yang, Xiaoli Li, Xiaohui Zhao, Xuelu Liu
Summary: The study investigates the interlayer coupling in graphene/MoS2 vdW heterostructures through spectroscopy analysis, revealing the electron transfer and coupling mechanism between graphene and MoS2.
Article
Materials Science, Biomaterials
Diego Belmonte, Claudio Mella, Gabriela Sanchez-Sanhueza, Andres Opazo-Capurro, Hector Aguilar-Bolados, Bruno Boury, Bruno F. F. Urbano
Summary: The size and shape of nanoparticles, such as graphene oxide (GO) platelets, have a significant impact on the properties of nanocomposites, including their mechanical strength and antibacterial effects. The current study demonstrates that increasing GO sheets in gelatin hydrogels improves mechanical strength and bactericidal capacity, particularly against drug-resistant strains. Therefore, the lateral dimensions of GO sheets play a crucial role in determining the properties of hydrogels.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Multidisciplinary Sciences
Andreij C. Gadelha, Douglas A. A. Ohlberg, Cassiano Rabelo, Eliel G. S. Neto, Thiago L. Vasconcelos, Joao L. Campos, Jessica S. Lemos, Vinicius Ornelas, Daniel Miranda, Rafael Nadas, Fabiano C. Santana, Kenji Watanabe, Takashi Taniguchi, Benoit van Troeye, Michael Lamparski, Vincent Meunier, Viet-Hung Nguyen, Dawid Paszko, Jean-Christophe Charlier, Leonardo C. Campos, Luiz G. Cancado, Gilberto Medeiros-Ribeiro, Ado Jorio
Summary: The twisted bilayer graphene undergoes self-organized lattice reconstruction, resulting in the formation of a superlattice that modulates vibrational and electronic structures, leading to phenomena such as strong correlations and superconductivity. Although experimental techniques and theoretical models face challenges in observing and describing these effects, nano-Raman spectroscopy can localize some vibrational modes and provide insights into the effects of electron-phonon coupling on the material properties.
Article
Materials Science, Multidisciplinary
Ana Durovic, Zorica Stojanovic, Zuzana Bytesnikova, Snezana Kravic, Pavel Svec, Jan Pribyl, Lukas Richtera
Summary: In this study, a rGO-ZnO nanocomposite was prepared and used to modify a glassy carbon surface for the electrochemical determination of tetracycline in water and urine samples. The modified sensor showed enhanced electro-oxidation of tetracycline with good analytical performance and selectivity. The practical analytical utility of the sensor was successfully demonstrated in both water and human urine samples.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jiayun Pei, Haiyan Zhao, Fan Yang, Dong Yan
Summary: The GO/Fe2O3 nanocomposites synthesized via vacuum-freeze-drying method exhibit excellent catalytic performance in the thermal decomposition of ammonium perchlorate, showing potential for application in catalysis.
Article
Chemistry, Multidisciplinary
Zhengfeng Guo, Honggang Gu, Mingsheng Fang, Lei Ye, Shiyuan Liu
Summary: Tellurene's giant in-plane optical anisotropy can be quantitatively evaluated using imaging Mueller matrix spectroscopic ellipsometry and first-principles calculations, and it is connected to its low-symmetry lattice structure and electrical anisotropy. This work provides a general and quantitative way to explore optical anisotropy and helps in understanding the relationship between lattice structure and optical anisotropy, thus promoting the development of polarization-sensitive optical applications.
Article
Materials Science, Ceramics
S. D. Ramarao, S. Roopas Kiran, V. R. K. Murthy
Summary: The conventional solid-state reaction technique was employed to synthesize ZnWO4 ceramic compounds, and their phase purity was confirmed by powder X-ray diffraction and Rietveld refinement studies. It was found that ZnWO4 compound had a monoclinic Wolframite crystal structure with P2/c space group. The microwave sintered ZnWO4 compounds exhibited higher density and smaller grain size compared to conventionally sintered compounds.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Sougata Koner, Pratik Deshmukh, Anju Ahlawat, A. K. Karnal, S. Satapathy
Summary: The dielectric, conductivity, and magneto-dielectric properties of LBMO/P(VDF-TrFE) nanocomposite films with different volume percentages of LBMO nanoparticles were studied. The permittivity remained stable with temperature increase, conductivity followed Johnscher's law indicating high insulating nature of the films. Magneto-dielectric study showed negative MD effect, with a maximum of -0.71% MD observed at 7000 Oe for 2% LBMO/P(VDF-TrFE) nanocomposite films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Dineo P. Sebuso, Alex T. Kuvarega, Kebadiretse Lefatshe, Cecil K. King'ondu, Nagla Numan, Malik Maaza, Cosmas M. Muiva
Summary: Green synthesis of nanostructured multilayer graphene and zinc oxide nanocomposites from natural extracts has been developed for the photo degradation of brilliant black (BB) under solar light irradiation. The physicochemical properties of the synthesized materials were studied using various characterization techniques. The MLG/ZnO nanocomposite showed great potential for the removal of pollutants from water under natural solar light irradiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
C. Tsakonas, A. C. Manikas, M. Andersen, M. Dimitropoulos, K. Reuter, C. Galiotis
Summary: Controllable large-scale synthesis of 2DMs, like graphene, is essential for industrial applications, with CVD being the most common method. A novel metrology system based on in situ reflectance spectroscopy is introduced for real-time monitoring surface changes during graphene growth, allowing for extraction of kinetic parameters. The construction of a microkinetic model of graphene growth based on DFT and hindered translator / rotator model provides a microscopic understanding of activation energy and rate-determining steps.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Rebeca da Rocha Rodrigues, Diogo Silva Pellosi, Guy Louarn, Laura Oliveira Peres
Summary: The use of conjugated polymers and metallic nanoparticles can result in nanocomposites with improved optical properties, such as high sensitivity. However, the hydrophobicity of conjugated polymers can limit their applications in aqueous media. To overcome this issue, thin solid films were formed by dispersing small conjugated polymer nanoparticles in an aqueous solution.
Article
Chemistry, Multidisciplinary
Lanping Zeng, Weiying Song, Xiangfeng Jin, Quanfeng He, Lianhuan Han, Yuan-fei Wu, Corinne Lagrost, Yann Leroux, Philippe Hapiot, Yang Cao, Jun Cheng, Dongping Zhan
Summary: Single layer graphene (SLG) has excellent electron conductivity on its basal plane, but if its band gap could be opened and regulated controllably, it would behave as a semiconductor. By using scanning electrochemical microscopy, researchers demonstrated that electrochemically induced brominating addition reaction can open and regulate the band gap of SLG. This work provides a feasible and effective way to regulate the band gap of SLG, which would open new applications for SLG in micro-nano electronics and ultra-large-scale integrated circuits.
Article
Polymer Science
Fei Jia, Cong Liu, Bo Yang, Alamusi Lee, Liangke Wu, Huiming Ning
Summary: High dielectric silicone rubber-based nanocomposites were prepared by adding graphene through ultrasonication and mechanical mixing, resulting in materials with improved properties. The cellular structure and dielectric properties were greatly influenced by the content of graphene and the expansion rate.
Article
Chemistry, Applied
J. Anita Lett, Solhe F. Alshahateet, Is Fatimah, Ramesh Poonchi Sivasankaran, Assefu Kassegn Sibhatu, Minh-Vien Le, Suresh Sagadevan
Summary: In this study, Mn3O4 nanoparticles were synthesized using the hydrothermal method and characterized for their morphology, surfaces, crystalline structure, and photocatalytic activity. The results confirmed the crystalline structure of Mn3O4 with a tetragonal phase and revealed a mixed rod-like morphology and rough surface spherical particles. The synthesized Mn3O4 nanoparticles showed photocatalytic activity towards methylene blue in water under natural solar irradiation for long periods of time, without the need for adjusting the pH or introducing an oxidant into the reaction mixture. This study suggests that the prepared Mn3O4 nanostructures have promising applications as photocatalysts for the degradation of organic dyes in aqueous media.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Applied
Ngoc-Diep Pham, Nguyen Hien Thao, Van Hoang Luan, Hoang Anh Hoang, Suresh Sagadevan, Manh-Thang Ngo, Nhung Nguyen Hong Duong, Minh-Vien Le
Summary: TiO2 and Ag-doped TiO2 photocatalysts were studied for their photocatalytic disinfection against Escherichia coli under artificial sunlight irradiation. The results showed that the presence of Ag narrowed the bandgap of TiO2 and shifted the absorption edge towards the visible region. 6 mol% Ag-doped TiO2 demonstrated strong antibacterial effectiveness against E. coli.
TOPICS IN CATALYSIS
(2023)
Article
Electrochemistry
S. Munusamy, Ramesh Poonchi Sivasankaran, K. Sivaranjan, P. Sabhapathy, V. Narayanan, Faruq Mohammad, Suresh Sagadevan
Summary: This study investigated the electrochemical sensing behavior of a GaN-PANI-PPy hybrid composite for mebendazole (MBZ). The synthesized MBZ drug was detected using a GaN-PANI-PPy modified glassy carbon electrode, showing linear responses in the concentration range of 3 x 10-7 - 9 x 10-8 M with a sensitivity of 3.02 mu A/mu M cm-2. The prepared GaN-PANI-PPy electrode exhibited good reproducibility, long-term stability, and anti-interference ability, making it suitable for the electrochemical sensing detection of MBZ in liquid samples such as anti-helthiminic drug milk.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Jyothy G. Vijayan, T. Niranjana Prabhu, A. G. Jineesh, Kaushik Pal, Subhendu Chakroborty
Summary: Polyurethane (PU) xerogels based on biobased polyol derived from chaulmoogra seed oil were synthesized using methylene diphenyl diisocyanate hard segment and polyethylene glycol (PEG6000) soft segment. Solvents such as tetrahydrofuran, acetonitrile, and dimethyl sulfoxide were used. Nanocellulose prepared from bagasse was added as a filler, and the resulting composite xerogels were evaluated for chemical stability. The adsorption properties of the xerogel (NC-PUXe) towards Rhodamine-B dye were studied, with factors such as adsorbent quantity, pH, temperature, and time investigated.
EUROPEAN PHYSICAL JOURNAL E
(2023)
Review
Pharmacology & Pharmacy
Renu Saharan, Sarvesh K. Paliwal, Abhishek Tiwari, Varsha Tiwari, Randhir Singh, Suresh Kumar Beniwal, Preeti Dahiya, Suresh Sagadevan
Summary: Graphene, hailed as the wonder material, has made significant advancements in applied science and medical science. Its unique properties have attracted great attention for its potential applications in chemotherapy and advanced drug delivery systems. Graphene oxide, as a well-defined nanocarrier, has also emerged as a key component.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Review
Pharmacology & Pharmacy
Rajkuberan Chandrasekaran, Muthukumar Krishnan, Giridharan Bupesh, Sonu Chacko, Omkar Gawade, Sheik Hasan, Evelin George, Tharumasivam Siva Vijayakumar, Meenakshi Sundaram, Suresh Sagadevan
Summary: The treatment of chronic and non-chronic wounds is challenging for clinicians. Nanotechnology-based wound care materials, particularly Graphene Oxide (GO), show promise due to their unique properties and ability to target infections at various stages of healing. GO is biocompatible, biodegradable, easily functionalized with drugs, and rapidly absorbed into cell membranes. This review highlights the role of GO in wound healing and explains its molecular dynamics.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Physical
Samira Bagheri, Nurhidayatullaili Muhd Julkapli, Mohd Rashid Yusof Hamid, Rojin Ziaei, Suresh Sagadevan
Summary: Photocatalysis can be used as an effective method for deactivating and degrading SARS-CoV-2 by generating reactive oxidative species (ROS) and inhibiting cell development. This review discusses the different photocatalytic systems and experimental parameters for efficient virus inactivation.
Review
Chemistry, Multidisciplinary
Shamsu Abubakar, Sin Tee Tan, Josephine Ying Chyi Liew, Zainal Abidin Talib, Ramsundar Sivasubramanian, Chockalingam Aravind Vaithilingam, Sridhar Sripadmanabhan Indira, Won-Chun Oh, Rikson Siburian, Suresh Sagadevan, Suriati Paiman
Summary: This article summarizes the recent attention on zinc oxide (ZnO) nanorods due to their piezoelectric properties and potential applications in energy harvesting, sensing, and nanogenerators. The study used piezoresponse force microscopy (PFM) to investigate the piezoresponse generated when an electric field was applied to the nanorods. The findings confirm that controlling the morphology and initial growth conditions of ZnO nanorods can significantly improve the performance of piezoelectric devices, particularly in terms of the magnitude of the piezoelectric coefficient factor (d33).
Review
Chemistry, Multidisciplinary
Suresh Sagadevan, Md Zillur Rahman, Estelle Leonard, Dusan Losic, Volker Hessel
Summary: Graphene, a two-dimensional material with a single atomic crystal structure, has the potential to create next-generation devices in various fields due to its excellent properties. Azobenzene (AZO) polymers, with their unique light-induced conformations and structures, are recognized as excellent candidates for a new generation of light-controllable molecular electronics. Combining graphene derivatives and AZO-based polymers could generate hybrid structures with interesting properties.
Article
Food Science & Technology
M. A. Motalib Hossain, Siti Aimi Sarah Zainal Abidin, Aishah Bujang, Mohd Nasir Taib, Suresh Sagadevan, Mohd Rafie Johan, Nina Naquiah Ahmad Nizar
Summary: Meat and meat products are highly sought after globally for their high-quality protein and nutrients, but the industry faces challenges such as food fraud, mislabeling, and zoonotic diseases. Quantitative detection of the species origin using methods like PCR is crucial for food control. This review focuses on the design, development, and applications of TaqMan probe-based mqPCR techniques for authenticating meat products, providing a reference for academia and industry to improve existing assays.
Article
Energy & Fuels
Amirah Razuki, Noor Haida Mohd Kaus, Suresh Sagadevann, Subhan Salaeh, Mohd Lokman Ibrahim, Mohd Mustaffa Al Bakri Abdullah
Summary: The successful synthesis of heterogeneous bismuth ferrite nanocatalysts using kappa-carrageenan polysaccharides as a template for transesterification of palm cooking oil for biodiesel production is reported. The optimized size of the nanocatalysts was 95.8 nm with a molar ratio of (Bi: Fe; 1:2) and a 1% carrageenan biotemplate, calcined at 823 K for 2 hours. The BiFeO3 nanocatalysts exhibited excellent catalytic performance, resulting in a maximum FAME yield of 98% under optimized conditions.
Review
Pharmacology & Pharmacy
Varsha Tiwari, Abhishek Tiwari, Ajay Sharma, Manish Kumar, Deepak Kaushik, Suresh Sagadevan
Summary: Alzheimer's disease causes neurodegenerative effects on mental ability, dementia, and behavioral changes, which can be observed years before symptoms appear. The lack of validated biomarkers presents a challenge for early diagnosis and management. However, advancements in nanotechnology offer potential solutions through inexpensive screening and targeted drug delivery using nanoparticles. These nanoparticles can efficiently cross the blood-brain barrier, and their improved characteristics make them useful for early diagnosis. This review provides comprehensive information on AD and its management, with a focus on nanotechnology advancements and various nanomedicine strategies.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Review
Pharmacology & Pharmacy
Suresh Sagadevan, Won-Chun Oh
Summary: MXenes are two-dimensional single-layer atomic nanosheets derived from MAX-phase ceramics. Extensive research has been conducted on 2D MXene nanomaterials due to their multifunctional properties. This systematic review examines studies on the cytotoxicity and biocompatibility of surface-modified or functionalized MXene materials for various biomedical applications, such as cancer drug delivery, tissue engineering, antimicrobial activity, bioimaging, photothermal therapy, advanced sensing, and patient monitoring. The review also discusses the toxicology and biodegradability of unmodified MXene materials and highlights regulatory concerns for the commercial utilization of MXenes in medical devices or drug delivery.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Review
Environmental Sciences
Rashmi Singh, Melvin S. Samuel, Madhumita Ravikumar, Selvarajan Ethiraj, Venkatesan Savunthari Kirankumar, Mohanraj Kumar, R. Arulvel, Sagadevan Suresh
Summary: This article provides an overview of abundant carbon-based nanomaterials in both the inorganic and organic worlds, including benzene, diamond, graphite, fullerene, and carbon nanotubes. The synthesis, characteristics, and various applications of graphene are explored, with a focus on ecologically friendly production techniques. Recent advancements in the detection and treatment of organic contaminants and heavy metals using nanomaterials are also discussed. The article presents the current state of the field and is considered helpful for anyone interested in nanomaterials and related materials.
Article
Chemistry, Inorganic & Nuclear
V. Ramasamy, E. Thenpandiyan, G. Suresh, T. Sathishpriya, Suresh Sagadevan
Summary: The nano CaCO3 and Eu3+ doped CaCO3/PEG nanocomposites were prepared through the biomimetic method. The prepared products were characterized and the electrochemical performance was evaluated. The results showed that the Eu3+ doped CaCO3/PEG nanocomposite exhibited superior pseudocapacitive behavior and could be used as an electrode material for supercapacitor applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2024)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)