Article
Environmental Sciences
Daejeong Yang, Ramu Adam Gopal, Telmenbayar Lkhagvaa, Dongjin Choi
Summary: ZnO tetrapods were fabricated using the thermal oxidation technique, with hydrogen peroxide solution proved to be a better oxidizing reaction helper compared to other agents.
ENVIRONMENTAL RESEARCH
(2021)
Article
Materials Science, Ceramics
S. Khajeh Mahmoodi, M. Sharifitabar, M. Shafiee Afarani
Summary: Composite powders containing TiB2 and ZrB2 particles were successfully prepared through combustion synthesis, with different mol ratios showing no significant impact on reaction velocity. Control of unwanted phases in the material was achieved by adding excess Mg under specific conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yinli Duan, Jing Ma, Jianan Dai, Liangsheng Qiang, Juanqin Xue
Summary: Efficient and low-cost photocatalysts containing Indium hydroxide anchored on zinc oxide with various morphologies were synthesized via a hydrothermal approach. The interaction between In(OH)(3) and ZnO was found to enhance the photocatalytic performance of ZnO. The photodegradation experiments showed that the photocatalytic activity of the In(OH)(3)/ZnO nanocomposites correlated with the material morphology, with the highest MB removal efficiency reaching 90.5%.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Mariana Bras, Julia Zanoni, Bruno P. Falcao, Joaquim P. Leitao, Florinda M. Costa, Teresa Monteiro, Sonia O. Pereira, Joana Rodrigues
Summary: Antibiotic pollution is a global concern, so it is important to develop cost-effective and reliable devices for detecting these contaminants. In this study, zinc oxide nanostructures were used as transducers in a fluorescent immunosensor to detect tetracycline. The nanostructures had a high surface area and could interact with antibodies and tetracycline molecules, providing a sensing mechanism. The sensor could quantitatively detect tetracycline in the range of 0.001 to 1 μg/L with a low limit of detection, indicating its advanced performance in this field.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Yurong Liu, Guangpan Lu, Likang Guo, Yanfang Zhang, Ming Chen
Summary: A flexible pressure sensor with co-planar electrodes was fabricated using piezoelectric nanocomposites made from PDMS and ZnO nanotetrapods (ZNTs) fillers. The sensors showed a linear response to external pressure and increased sensitivity with higher growth temperature and ZNTs filler concentration. The sensor demonstrated potential applications in hand gesture and speech recognition.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Yanxia Zheng, Lixi Yang, Yao Chen, Yubo Yang, Cuncun Zuo, Jiutao An, Qian Wang, Haofei Huang, Yuchao Li, Ming Wang
Summary: ZnO nanorods with hexagonal pores were synthesized using ionic liquids (ILs). Au nanoparticles were supported on the ZnO nanorods and used as catalysts for the oxidative esterification reaction. The catalyst prepared using C(10)mimCl showed the highest activity and followed the Mars-van Krevelen reaction mechanism. The strong interaction between Au and ZnO-C10, as well as the presence of extensive vacancy defects, enhanced the catalytic performance. Compared to commercial ZnO, the Au/ZnO-IL catalysts exhibited good recycling stability.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Huanyi Li, Xueqing Wang, Hui Yi, Xuefeng Shi, Mengqi Mao, Yanshi Zhang, Haomin Huang, Daiqi Ye, Xin Tu, Junliang Wu
Summary: The morphology and size effects of Ceria (CeO2) on methanol oxidation in a non-thermal plasma (NTP) system were investigated. CeO2-Rod and CeO2-Cube with different sizes were synthesized and showed morphology-dependent and size-dependent activity. CeO2-Rod catalyst exhibited better performance than CeO2-Cube, while both of them showed improved catalytic activity with reduced size. The difference in catalytic activity was attributed to the variation in surface adsorbed oxygen species. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments revealed distinct methanol adsorption behavior and oxidation processes on different CeO2 morphologies.
Article
Polymer Science
Mingyu Guo, Chengfeng Zhou, Yuandong Cui, Wei Jiang, Guangting Han, Zhan Jiang, Haoxi Ben, Xiaoli Yang
Summary: The catalytic conversion of cellulose to lactic acid has been extensively studied and a series of catalysts were synthesized and applied to successfully transform cellulose into lactic acid. The optimization of reaction parameters and catalyst compositions resulted in high selectivity for cellulose conversion, with glucose isomerization identified as the rate-limiting step.
Article
Chemistry, Physical
Jiaying Xu, Pengfei Ma, Binglin Zou, Xue Yang
Summary: ZrB2-ZrC/Ni cermet composites with various Ni contents were successfully synthesized by self-propagating high-temperature synthesis using the Ni-Zr-B4C system. The effects of Ni content and B4C particle size on the SHS reaction were investigated. The results showed that an increase in Ni content led to a decrease in adiabatic temperature, maximum combustion temperature, ignition delay time, and ceramic particle size in the product. The formation mechanism of ZrB2 and ZrC during SHS from the Ni-Zr-B4C system was proposed based on combustion wave quenching experiment.
Article
Engineering, Environmental
Wen Luo, Jing Rong, Wanxia Zhao, Keke Kang, Lulu Long, Xiaojiang Yao
Summary: CeO2-TiO2 catalysts with different morphologies were synthesized and tested for selective catalytic reduction of NOx with NH3. The catalyst with nanospheres morphology exhibited the best performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Characterization & Testing
Youmei Du, Dequan Ma, Jie Mao, Jianqi Yao, Qin Ma, Jing Lu, Faliang Luo, Chunhui Luo, Lei Li
Summary: In this study, polypropylene composites filled with M-T-ZnOw@Ag filler with antibacterial and antistatic properties were successfully synthesized. The addition of M-T-ZnOw@Ag significantly improved the composite materials' antibacterial and antistatic properties, along with better mechanical properties. This composite material can greatly expand the application range of polypropylene materials.
Article
Engineering, Electrical & Electronic
Deep Chandra Upadhyay, Satyabrata Jit
Summary: This letter presents a metal-semiconductor-metal dual band photodetector with an interdigitated electrode structure of silver on CdSe nanocrystals-coated ZnO structure. The device exhibits dual-wavelength detection property with high responsivities and detectivities at 380 nm and 540 nm, under low bias voltages. The transient characteristics analysis reveals fast rise and fall times for both UV and visible light.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Materials Science, Multidisciplinary
Raill Mendoza Baez, A. Marco Morales, Adan Luna Flores, Ricardo Agustin Serrano
Summary: In this study, the synthesis of zinc oxide nanoparticles (ZnONPs) was investigated using a multiscale modeling approach based on a three-stage reaction mechanism via the hydrothermal method. The reactivity of chemical compounds in the reaction mechanism was evaluated using Density Functional Theory (DFT) with the B3LYP/6-311+G method. Computational simulations and numerical solutions were employed to replicate the three-dimensional morphologies of ZnONPs, such as rods, spheres, octahedra, and others, reported experimentally.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jing Chen, Haitao Zhu, Qifang Ren, Shaohua Chen, Yi Ding, Zhen Jin, Wanmi Guo, Xinyu Jia
Summary: The Cu2O/g-C3N4 composite with photocatalytic activity was successfully prepared by chemical precipitation method. The catalytic degradation of ciprofloxacin (CIP) by Cu2O and Cu2O/g-C3N4 composites was investigated, and the Cu2O-3(20%)/g-C3N4 composite showed the highest catalytic activity with a photocatalytic oxidation efficiency of 96%. The addition of g-C3N4 improved the crystal morphology and light utilization of Cu2O, and promoted the interfacial charge separation.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Bo Li, Huan-Yan Xu, Yu-Long Liu, Li-Min Dong, Sridhar Komarneni
Summary: In this study, researchers successfully prepared a urchin-like Co3O4 nanocatalyst and utilized it for the degradation of high-concentration organic dye CV. The experimental results showed that the nanocatalyst was able to efficiently remove CV under neutral conditions within a short reaction time. Additionally, through experimental and theoretical calculations, the contribution and degradation pathway of ROS in the CV degradation process were elucidated.
CERAMICS INTERNATIONAL
(2022)
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)