Article
Materials Science, Multidisciplinary
Shubham Tripathi, Divya Tripathi, Ravindra Kumar Rawat, Pratima Chauhan
Summary: Facile hydrothermal synthesis of tungsten oxide (WO3) without using surfactant was successfully achieved. The average crystallite size and band gap were determined to be 24 nm and 2.60 eV, respectively. The WO3-based sensor showed the highest response towards methanol among various volatile organic compounds (VOCs) at room temperature and its response decreased with increased relative humidity (RH).
Article
Chemistry, Physical
Linda Abbassi, David Mesguich, Loic Coulomb, Geoffroy Chevallier, Romain Aries, Claude Estournes, Emmanuel Flahaut, Romain Viennois, Mickael Beaudhuin
Summary: In this paper, a simple route to synthesize nano-beta-FeSi2 material is reported. The impact of spark plasma sintering parameters on the material properties is studied. Experimental results show that high-density nano-beta-FeSi2 pellets can be obtained using this method in a short time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
J. Rabha, M. Das, D. Sarkar
Summary: This study reports on the layer dependent UV (365 nm) photo-sensing performance in Al: PS-ML: pt-Si Schottky photovoltaic device. The device showed increased performance of 156%, 221%, 128% with pyro-phototronic behavior, and had pyro response and recovery times of 0.4 s, 0.5 s, 0.7 s and 1 s, 1.3 s, 1.1 s for three PS-ML devices respectively. The open circuit voltage (Voc) and Fill factor (FF) for the devices were found to be - 194mV,-200mV,-345mV and 29%, 32%, 29%.
Review
Multidisciplinary Sciences
Yogendra K. Gautam, Kavita Sharma, Shrestha Tyagi, Anit K. Ambedkar, Manika Chaudhary, Beer Pal Singh
Summary: Climate change and global warming are major concerns for the scientific community, with anthropogenic emissions of greenhouse gases greatly increasing the greenhouse gas levels in the Earth's atmosphere. The detection of GHGs, such as carbon dioxide, methane, nitrous oxide, and ozone, is crucial in managing and reducing their concentration in the atmosphere. The use of nanostructured metal oxide semiconductor (NMOS) based technologies has been found to be reliable and accurate for sensing GHGs emissions.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Faiza Jilani, Muhammad Husnain, Faisal Nawaz, Muhammad Ali Mohsin, Naseem Iqbal, Javed Iqbal, Ahmed Abd El-Fattah
Summary: The sensing of bio-molecules and toxic compounds has been a long-term interest. However, the similar reduction potential values and diverse chemical nature of these analytes make the simultaneous and accurate determination challenging. In this study, a transition metal oxide/graphitic-carbon nitride composite was successfully fabricated, which exhibited suitable band-gap formation and facilitated the reduction of dopamine and hydrazine at different potentials. The characterization of the composite material was conducted by SEM-EDX, XRD, FTIR, and electro-chemical analysis. The sensor response analysis revealed that the as-prepared material showed superior LOD for hydrazine compared to dopamine.
Article
Electrochemistry
Fauzan Amri, Doli Bonardo, Muhammad Rezki, Ni Luh Wulan Septiani, Muhammad Iqbal, Dani Gustaman Syarif, Nugraha, Brian Yuliarto
Summary: This study successfully synthesized an enzymatic glucose sensor based on mesoporous TiO2 nanoparticles and demonstrated its excellent sensing performance through experiments.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Engineering, Electrical & Electronic
Kurugundla Gopi Krishna, Saidireddy Parne, Nagaraju Pothukanuri, Velavan Kathirvelu, Suman Gandi, Dhananjay Joshi
Summary: This article reviews the synthesis methods and sensing properties of nanostructured metal oxide semiconductor-based gas sensors, and summarizes the novel gas sensors and their characteristics under environmental pollution. Prospects for future research on the gas sensing mechanism of metal oxide semiconductors are proposed.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Physical
Hamouda M. Mousa, Jarah Fares Alenezi, Ibrahim M. A. Mohamed, Ahmed S. Yasin, Abdel-Fatah M. Hashem, Abdalla Abdal-hay
Summary: This study successfully synthesized a semiconductor-semiconductor (S-S) heterojunction film with low bandgap energy, achieving efficient wastewater treatment through photocatalysis. The new material exhibited excellent antibacterial properties and photodegradation effects, showing great potential for application in wastewater treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
M. Amir, M. Abbas, M. Fatima, Z. S. Khan, N. A. Shah
Summary: The study focuses on decorating metal oxide semiconducting nanoparticles on the side walls of multi-wall carbon nanotubes to enhance sensor sensitivity, with the results showing that varying the synthesis temperature can increase the infrared sensing response of the nano sensor.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Analytical
Abderrahim Moumen, Gayan C. W. Kumarage, Elisabetta Comini
Summary: This review discusses the synthesis of p-type metal-oxide (p-type MOX) semiconductor thin films for chemical-sensing applications, focusing on CuO, NiO, Co3O4, and Cr2O3. Various techniques for growing p-MOX thin films are reviewed, including physical vapor deposition (PVD) and chemical vapor deposition (CVD). The physicochemical properties, sensing mechanism, and sensing characteristics of the mentioned thin films are discussed. Strategies for improving the sensing capabilities of p-type MOX thin films are also presented.
Review
Chemistry, Multidisciplinary
P. Martins, N. Pereira, A. C. Lima, A. Garcia, C. Mendes-Filipe, R. Policia, V. Correia, S. Lanceros-Mendez
Summary: In recent years, printed electronics have gained popularity due to their unique features such as low-cost production, multifunctionality, stretchability, sustainability, and flexibility. With the increasing use of printed technologies in the future, especially with the advancements in the Internet of Things and the 4.0 revolution, it is important to discuss the relationship between printed technologies and electronic materials, including the joint features, interrelations, complementarities, interdependency, and challenges.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Mehran Dadkhah, Jean-Marc Tulliani
Summary: Climate change and global warming are significant threats due to ongoing human-induced emissions of greenhouse gases. This article emphasizes the importance of accurate measurements and reliable quantifications of GHG emissions for understanding climate change and implementing mitigation measures. The use of nanostructured metal oxide semiconductors for GHG detection is comprehensively reviewed, highlighting their strengths and weaknesses.
Article
Materials Science, Multidisciplinary
Maryam Basit, Murrawat Abbas, Naeem Ahmad, Sofia Javed, Nazar Abbas Shah
Summary: Zinc oxide/carbon nanotube (ZnO/CNT) nanocomposites were prepared on gold-coated unpolished silicon substrates by vapor-liquid-solid method, and the structural, morphological, and optical properties were characterized using various techniques. The results showed high crystallinity and purity of the ZnO/CNT nanocomposites, as well as the influence of Au thickness on the structure and morphology.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Physical
Guokai Liu, Lianjie Zhu, Yanmiao Yu, Mo Qiu, Hongjia Gao, Deyou Chen
Summary: WO3 nanoplates with abundant surface chemisorbed oxygen species were prepared by a simple hydrothermal method in the presence of PVP. The gas sensing properties of the WO3 nanoplates were systematically investigated, showing effective detections towards acetone and ammonia gases at different operating temperatures. The different sensing properties at different temperatures may be attributed to alteration in active oxygen species on the WO3 surfaces and distinct difference in bonding energies of acetone and ammonia molecules.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Nik Noor Nabilah Md Ibrahim, Abdul Manaf Hashim
Summary: Detection via nanohole is a simple sensing tool to analyze various biopolymers with high sensitivity. The combination of conical-shaped Si micro-nanopore and graphene nanohole shows significant ionic current blockade detection, indicating the potential for high sensitive DNA biosensors. The sensitivity of around 110 nA/μL for both devices is relatively higher compared to other literatures.
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)