Article
Chemistry, Physical
Narthana Kandhasamy, Gopal Ramalingam, Govindhasamy Murugadoss, Manavalan Rajesh Kumar, Gunasekaran Manibalan, Rajabathar JothiRamalingam, Hemraj M. Yadav
Summary: The study successfully synthesized highly uniform copper and zinc oxide anchored nanoparticles on the surface of silica using a sol-gel method. Detailed structural and compositional analyses were carried out using X-ray diffraction, X-ray photoelectron spectroscopy, Laser Raman, field emission scanning electron microscopy, and transmission electron microscopy. The charge-discharge results showed excellent performance in specific capacitance at high current densities for the composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Multidisciplinary Sciences
Ana C. Marques, Mario Vale, Daniel Vicente, Murielle Schreck, Elena Tervoort, Markus Niederberger
Summary: In this study, inorganic silica microspheres are utilized as a platform for designing photocatalytic systems for wastewater treatment through solar-driven photocatalysis. The photocatalytically active microspheres are prepared by wet impregnation with TiO2 nanoparticles, leading to an increase in specific surface area and retention of macroporosity. The microspheres exhibit high photocatalytic activity and can be easily removed from the reaction medium, addressing typical challenges associated with TiO2 nanoparticles photocatalysts.
Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Polymer Science
Arpaporn Teamsinsungvon, Chaiwat Ruksakulpiwat, Penphitcha Amonpattaratkit, Yupaporn Ruksakulpiwat
Summary: In this study, titania-silica oxides were prepared using the sol-gel technique, and the effects of pH and Ti/Si atomic ratio on the structural characteristics of these oxides were investigated. The results showed that altering the Ti/Si ratio under alkaline conditions resulted in more uniform and minimized agglomeration of the nanoparticles.
Article
Chemistry, Multidisciplinary
Elvira Mahu, Cristina Giorgiana Coromelci, Doina Lutic, Iuliean Vasile Asaftei, Liviu Sacarescu, Valeria Harabagiu, Maria Ignat
Summary: This study prepared a mesoporous titania structure using ultrasound-assisted sol-gel technique, which was found to increase the crystallinity of titania samples and affect their photocatalytic activity. The research also investigated the influence of surfactant/titania precursor weight ratio on the structural and textural properties of titania.
Article
Chemistry, Multidisciplinary
Guan-Hong Chen, Chen-Te Lin, Po-Hsun Chen, Tyng-Woei Jang, Hsueh-Shih Chen
Summary: This study investigates the integration strategies of quantum dots (QDs) within glass and polymer matrices to engineer high-performance quantum dot color converters (QDCCs) at the industrial scale. By optimizing light-scattering and propagation mechanisms, significant improvements in light extraction efficiency can be achieved. These research findings are of great significance for the development of QD-based lighting and display systems.
Article
Nanoscience & Nanotechnology
Zeinab Chehadi, Mohammed Bouabdellaoui, Mehrnaz Modaresialam, Thomas Bottein, Marco Salvalaglio, Monica Bollani, David Grosso, Marco Abbarchi
Summary: Fabrication and scaling of disordered hyperuniform materials are still facing challenges, but a hybrid top-down/bottom-up approach has been demonstrated for faithful reproduction of such materials. The antireflective character of titania structures on silicon shows potential applications, opening up possibilities for large-scale implementation of metal oxide-based nano- and microarchitectures in wet chemical assembly.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Borbala Tegze, Emoke Albert, Boglarka Diko, Norbert Nagy, Adel Racz, Gyorgy Safran, Attila Sulyok, Zoltan Horvolgyi
Summary: In this study, mesoporous TiO2 sol-gel coatings were modified with silver using two methods, and the effects of silver modification on the functional properties were investigated. The samples made with the impregnation method showed better functional properties despite having significantly lower silver content. The pore structure influenced the Ag content achieved by the impregnation method, and subsequently affected their photoactivity.
Review
Chemistry, Physical
Daniel Alves Barcelos, Maria Clara Goncalves
Summary: Visible-light-photoactive titania micro- or nanoparticles have shown great potential in various industrial applications, especially in environmental remediation. The sol-gel method, with its simplicity, versatility, and green chemistry approach, has been successfully employed for synthesizing crystalline and amorphous TiO2 micro- and nanoparticles. This short review aims to discuss the recent advancements in visible-light-photoactive titania-based nanoparticles for environmental remediation. Co-doping of titania, titania composite design, and the use of amorphous networks have been the most commonly used strategies to achieve this goal. Finally, predictions about the future developments in these fields are provided.
Article
Materials Science, Multidisciplinary
Derya Kapusuz Yavuz
Summary: By using the sol-gel method, mesoporous silica was hybridized with PEI and PEG polymers to encapsulate RNA oligonucleotides, forming hybrid particles with positive surface charge for future RNA interference applications. Results from various analyses showed that the hybrid particles exhibited good chemical stability and cell-penetrating properties, indicating their potential as effective RNA interference vectors.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Applied
Shumaila Islam, Muhammad Safwan Aziz, Hazri Bakhtiar, Adil Alshoaibi, Sulaiman Wadi Harun, Saira Riaz, Shahzad Naseem
Summary: Mesoporous hematite nanoparticles encapsulated SiO2-TiO2 nanocomposites were synthesized and heat-treated, resulting in improved magnetic properties and higher specific surface area for enhanced sensitivity of the sensor. The fiber optic chemical sensor showed a linear response towards hydrocarbons with good stability and accuracy.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Adele R. Latypova, Maxim D. Lebedev, Ilya A. Tarasyuk, Alexander I. Sidorov, Evgeniy V. Rumyantsev, Artur S. Vashurin, Yuriy S. Marfin
Summary: A one-step synthesis method for organomodified silica materials using a special surfactant DDAO was developed in this study, eliminating the need for heat treatment. SEM images revealed that all obtained materials had similar spherical morphology with a particle diameter of about 500 nm. The catalytic activity experiments showed that the amino-modified matrix exhibited the highest activity, while the phenyl-modified matrix demonstrated low activity due to hydrophobic interactions hindering product diffusion.
Review
Materials Science, Ceramics
A. Rex, J. H. Z. dos Santos
Summary: This article discusses the use of sol-gel processes in various applications such as dry methane reforming, hydrogenation, hydrolysis, oxidation, photocatalysis, and polymerization. The most commonly used route is base-catalyzed sol-gel, which results in spherical and compact encapsulated catalysts. New methods using mild conditions for oxidation via enzymes and yeast cells are also reported. Nonhydrolytic routes are still relevant for the encapsulation of metallocenes. Silica encapsulation enables a broad range of applications for supported catalysts.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Yanna Gurianov, Michael Meistelman, Yael Albo, Marina Nisnevitch, Faina Nakonechny
Summary: This study reports the incorporation of Rose Bengal into organically modified silica matrices using the sol-gel technique. The addition of solidifier to the matrix was found to affect the antibacterial activity of Rose Bengal. The RB6@ORMOSIL matrix immobilized on a linear low-density polyethylene surface exhibited the highest antibacterial activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Condensed Matter
Adil Alshoaibi, Shumaila Islam
Summary: Silica-based bromophenol blue immobilized materials (BPB-S and BPB-ST) were synthesized for pH sensing applications in the food industry. The nanocomposites exhibit porous surfaces and thermal stability, with BPB-ST showing faster response time compared to BPB-S. These materials have potential for detecting volatile organic vapors and assessing freshness visually based on fish pH changes.
PHYSICA B-CONDENSED MATTER
(2021)
Review
Chemistry, Analytical
Siti nor Hidayah Arifin, Radin Mohamed, Adel Al-Gheethi, Chin Wei Lai, G. Yashni
Summary: This article reviews the potential of using TiO2 nanotubes for photocatalytic degradation of TCC and TCS in greywater. The results show that TiO2 nanotubes have high efficiency in degrading TCC and TCS, with removal rates ranging from 33% to 99% for TCC and 1.73% to 90% for TCS. Moreover, photocatalytic degradation of TCC and TCS has led to the production of nonhazardous photoproducts.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Jahir Ahmed, M. Faisal, S. A. Alsareii, Mohammed Jalalah, Mabkhoot Alsaiari, Farid A. Harraz
Summary: In this study, a novel Acetaminophen (AcP) sensor utilizing a Mn2O3-embedded mesoporous silicon nanocomposite fabricated glassy carbon electrode was developed. The sensor showed excellent sensitivity, a wide linear dynamic range, and a very low detection limit. It was also successful in detecting AcP concentration in commercial tablets and checking potential chemical interference. Therefore, this Mn2O3@PSi/GCE sensor assembly is expected to be an effective route in developing an efficient AcP sensor.
CERAMICS INTERNATIONAL
(2023)
Article
Green & Sustainable Science & Technology
Lai Llih Shyan, Noreen Suliani Mat Nanyan, Norli Ismail, Adel Al-Gheethi, Hong-Ha T. Nguyen, Dai-Viet N. Vo, Hesham Ali El Enshasy
Summary: Food waste can be converted into biogas as a source of renewable energy. However, the high degradation rate from volatile fatty acids (VFA) leads to inhibition in anaerobic digestion. This study used a symbiotic culture of bacteria and yeast (SCOBY) and kombucha mixed inoculum and compost to alleviate the inhibition and improve biogas production.
Review
Engineering, Chemical
Francesco Bianco, Adel Ali Saeed Al-Gheethi, Marco Race
Summary: This review examines the connection between the anammox process and PAHs, suggesting that PAHs can act as electron donors during nitrogen removal without adversely affecting the anammox bacteria. It also highlights the potential for improving anammox activity and PAH degradation through regulating operating parameters and external supplements.
Article
Biochemistry & Molecular Biology
Rizwan Tahir, Hasan B. Albargi, Adnan Ahmad, Muhammad Bilal Qadir, Zubair Khaliq, Ahsan Nazir, Tanzeela Khalid, Misbah Batool, Salman Noshear Arshad, Mohammed Jalalah, Saeed A. Alsareii, Farid A. Harraz
Summary: Nanofiber-based facial masks with Azadirachta indica extract (AI) incorporated polyvinyl alcohol (PVA) nanofiber membranes were prepared and characterized. The optimized nanofiber had a diameter of 376 +/- 75 nm and the AI nanoparticles in the extract ranged from 50 to 250 nm. The nanofiber membrane exhibited good hydrophilicity, water absorption, fast drug release, antibacterial and antioxidant activities, as well as mechanical properties and breathability.
Article
Chemistry, Analytical
Mohammed Jalalah, HyukSu Han, Milan Mahadani, Arpan Kumar Nayak, Farid A. Harraz
Summary: The creation of energy harvesting/storage systems from biomass/waste materials offers a green and sustainable option for biomass reuse, with significant scientific and technological implications. Microstructure management is crucial for carbon-based materials to achieve the required applications in the fields of supercapacitor and conversion. In this study, a facile production method of heteroatom-doped porous carbon (HAPC) from Enhydra fluctuans leaves as electrode material for supercapacitor was demonstrated, resulting in large specific-surface area and good pore-size distribution. The solid-state symmetric supercapacitor device (SSSD) showed exceptional durability, maintaining 94% of its specific capacitance after 10,000 charge/discharge cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
M. Faisal, Jahir Ahmed, Jari S. Algethami, Ali S. Alkorbi, Saeed A. Alsareii, Farid A. Harraz
Summary: Surface modification and bandgap engineering of ZnTiO3 is important for improving its photocatalytic performance. In this study, a ternary photocatalyst composed of ZnTiO3 nanostructures, polypyr-role doped carbon back (PPy-C), and gold nanoparticles (Au NPs) was developed. The synthesized Au@PPy-C/ZnTiO3 photocatalyst showed enhanced degradation efficiency under visible light illumination compared to bare ZnTiO3, attributed to its well-ordered mesoporous structure, high surface area, and effective decline in recombination rate of charge carriers.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Ali Afzal, Mohammed Jalalah, Abid Noor, Zubair Khaliq, Muhammad Bilal Qadir, Rashid Masood, Ahsan Nazir, Sheraz Ahmad, Faheem Ahmad, Muhammad Irfan, Munazza Afzal, Mohd Faisal, Saeed A. Alsareii, Farid A. Harraz
Summary: Nowadays, synthetic polymers with special properties such as biodegradability, biocompatibility, hydrophilicity, and non-toxicity are widely used in medical applications. This study aims to develop and characterize PVA/PCL fibers containing a model drug for controlled drug release in wound dressing. The wet spinning technique was used to produce PVA/PCL fibers from a dope solution, and the fibers were tested for various properties related to wound healing. The results showed that the developed PVA/PCL fibers have respectable tensile properties, adequate liquid absorption, swelling behavior, degradation, and antimicrobial activity, as well as a controlled drug release profile.
Article
Biotechnology & Applied Microbiology
Shehab Abdulhabib Alzaeemi, Efaq Ali Noman, Muhanna Mohammed Al-shaibani, Adel Al-Gheethi, Radin Maya Saphira Radin Mohamed, Reyad Almoheer, Mubarak Seif, Kim Gaik Tay, Noraziah Mohamad Zin, Hesham Ali El Enshasy
Summary: The present study optimized the production of L-asparaginase from Aspergillus arenarioides EAN603 using a combination of response surface methodology and radial basis function neural network with a genetic algorithm. Independent factors including temperature, pH, incubation time, and soybean concentration were considered. The results showed that these factors had significant effects on L-asparaginase production, with the actual values being higher than the predicted values.
FERMENTATION-BASEL
(2023)
Article
Engineering, Chemical
Md. A. Rashed, N. . I. Nayem, M. Hafizur Rahman, M. Faisal, Jari S. Algethami, S. . A. Alsareii, Mohammad K. Islam, Farid A. Harraz
Summary: This article successfully designs a sensitive and selective electrochemical glucose sensor using Pt nanoparticles (PtNPs) decorated single-wall carbon nanotubes (SWCNTs) and nickel oxide (NiO) nanostructure-based composite materials. The fabricated sensor demonstrates excellent catalytic activity, sensitivity, and selectivity, along with outstanding repeatability, reproducibility, and stability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Electrical & Electronic
M. Faisal, Jahir Ahmed, Jari S. Algethami, Ahmed Mohamed El-Toni, Joselito P. Labis, Aslam Khan, Farid A. Harraz
Summary: A novel visible light ternary photocatalytic structure based on mesoporous ZnO combined with chitosan (CSN) and gold nanoparticles (AuNPs) was synthesized and proven to be highly efficient in removing insecticide and dye under visible light illumination. The as-fabricated Au@CSN/ZnO nanocomposite showed 211% higher efficiency than bare mesoporous ZnO in removing insecticide and rapid destruction of dye. In addition, the photocatalyst exhibited good stability and recyclability, making it suitable for practical application in environmental remediation.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Biomedical
Lipeng Qiao, Yongping Liang, Jueying Chen, Ying Huang, Saeed A. Alsareii, Abdulrahman Manaa Alamri, Farid A. Harraz, Baolin Guo
Summary: In this study, adhesive self-healing conductive antibacterial hydrogel dressings were prepared for the repair of infected wounds. The hydrogel exhibited self-healing properties, good conductivity, photothermal anti-bacterial properties, and improved wound healing in the infected skin wound repair test. These hydrogels have potential as promising candidates for wound healing dressings for the treatment of infected skin wounds.
BIOACTIVE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Adnan Ahmad, Hasan Albargi, Mumtaz Ali, Misbah Batool, Ahsan Nazir, Muhammad Bilal Qadir, Zubair Khaliq, Salman Noshear Arshad, Mohammed Jalalah, Farid A. Harraz
Summary: By incorporating nanoparticles, superhydrophobic surfaces can be achieved with potential applications. In this study, a superhydrophobic nanofibrous membrane was developed through electrospinning and post-heat treatment, resulting in a hierarchically nanorough surface. The membrane exhibited excellent superhydrophobicity, robustness, and self-healing properties.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Environmental Sciences
Mohd Faisal, Jahir Ahmed, Mohammed Jalalah, Saeed A. Alsareii, Mabkhoot Alsaiari, Farid A. Harraz
Summary: Appropriate material selection and bandgap modification are crucial for efficient photocatalyst development. In this study, a visible light oriented photocatalyst based on g-C3N4, chitosan (CTSN) and platinum (Pt) nanoparticles was developed using a simple chemical approach. Various characterization techniques were employed to analyze the synthesized materials. The newly developed ternary photocatalyst exhibited excellent efficiency in the degradation of gemifloxacin mesylate and methylene blue under visible light. This research provides a simple method for designing rapid and effective visible light oriented photocatalysts to combat environmental issues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
M. Faisal, Jahir Ahmed, Jari S. Algethami, Mabkhoot Alsaiari, Farid A. Harraz
Summary: An efficient and reliable ternary photocatalyst based on Bi2O3 nanostructure, polypyrrole doped carbon black, and palladium nanoparticles was successfully developed using simple ultra-sonication and photo-reduction methods. The ternary photocatalyst showed excellent performance in removing pollutants from contaminated water, with enhanced efficiency attributed to increased surface area, enhanced charge carrier transfer, and better separation behavior.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
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)
