Article
Chemistry, Physical
Nouha Mediouni, Frederic Dappozze, Lhoussain Khrouz, Stephane Parola, Abdesslem Ben Haj Amara, Hafsia Ben Rhaiem, Nicole Jaffrezic-Renault, Philippe Namour, Chantal Guillard
Summary: This study investigated the generation of hydrogen peroxide on commercial and synthesized ZnO from different precursors using model molecules and phenolic intermediates. The results showed that the improved efficiency of ZnO photocatalysis is related to the production of H2O2, the reduction of oxygen vacancies, and the similar number of moles of H2O2 formed per number of carbon atoms removed.
Article
Biochemistry & Molecular Biology
Farid Orudzhev, Arsen Muslimov, Daud Selimov, Rashid R. Gulakhmedov, Alexander Lavrikov, Vladimir Kanevsky, Rashid Gasimov, Valeriya Krasnova, Dinara Sobola
Summary: This paper reports on the high photocatalytic activity of ZnO tetrapods (ZnO-Ts) under visible/solar light and hydrodynamic water flow. It was demonstrated that surface oxygen defects play a crucial role in the photocatalytic activity of ZnO-Ts. The ability to control the surface wettability and surface defect concentration of ZnO-Ts was also shown. Additionally, the similar photocatalytic activity of ZnO-Ts under direct and simulated sunlight offers great potential for solar photocatalysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Huizhong Ma, Baofei Hao, Wentao Song, Jinpeng Guo, Mingyuan Li, Lan Zhang
Summary: The TiO2/ZnO heterojunction thin films combined with surface oxygen vacancies prepared through magnetron sputtering showed enhanced photocatalytic performance in degrading organic pollutants in water. By controlling the O-2/Ar ratio, the morphology, thickness, chemical composition, and crystal structure of the films can be regulated to improve photocatalytic efficiency. The heterojunction thin film exhibited superior photocatalytic properties due to the heterojunction interface and surface oxygen vacancies, accelerating the separation of electron-hole pairs.
Article
Chemistry, Multidisciplinary
Fatemah. H. Alkallas, Amira Ben Gouider Trabelsi, Ramzi Nasser, Susana Fernandez, Ji-Ming Song, Habib Elhouichet
Summary: Chromium-doped zinc oxide nanorods were prepared and their structural, morphological, and optical properties were studied. The doped nanorods showed efficient photocatalytic degradation of methyl orange under UV-vis light illumination.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Inorganic & Nuclear
M. R. Alfaro Cruz, Leticia M. Torres -Martinez
Summary: A SnO2-ZnO photocatalyst was prepared through successive ionic layer adsorption and reaction (SILAR) and sputtering methods. The annealed films showed the presence of tetragonal SnO2 and hexagonal ZnO phases. The nonhomogeneous surface of the films had spherical particles, with agglomeration occurring during ZnO deposition. The defects in ZnO and SnO2 allowed for hydrogen production and redox reactions, contributing to the stability of the films.
SOLID STATE SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Zhouzheng Jin, Jingru Li, Yiming Zhang, Dan Liu, Hui Ding, Bhekie B. Mamba, Alex T. Kuvarega, Jianzhou Gui
Summary: Simultaneously integrating heterogeneous interface, element doping, and metal decorating is an effective strategy for enhancing visible-light-driven photocatalytic activity. In this study, a facile solvothermal route was employed to synthesize Ni-doped BiOBr/Bi-0 with ZnO 3D hierarchical heterojunction (Z@B/Bi-Ni). The optimized Z@B/Bi-Ni photocatalysts exhibited remarkable catalytic performance, outperforming other photocatalysts, towards the degradation of tetracycline solution under visible light. The enhanced photocatalytic mechanism was attributed to the unique morphologies, surface plasmonic resonance effect, and Ni doping in Z@B/Bi-Ni, which were elucidated by a series of experiments, characterization, and DFT calculations. This research provides new insights for the design of hierarchical heterojunction photocatalysts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
M. C. Uribe-Lopez, M. C. Hidalgo-Lopez, R. Lopez-Gonzalez, D. M. Frias-Marquez, G. Nunez-Nogueira, D. Hernandez-Castillo, M. A. Alvarez-Lemus
Summary: In this study, the effects of different synthesis methods on the photoactivity of ZnO nanoparticles were investigated. It was found that the sol-gel method resulted in higher photocatalytic performance compared to the precipitation method, mainly due to the distinct morphologies of ZnO nanoparticles obtained from each method. These results highlight the significant impact of slight variations in physical and chemical properties on the photocatalytic performance of ZnO nanoparticles.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Physical
Milan Masar, Hassan Ali, Ali Can Guler, Michal Urbanek, Pavel Urbanek, Barbora Hanulikova, Hana Pistekova, Adriana Annusova, Michal Machovsky, Ivo Kuritka
Summary: A set of ZnO nanocrystals assembly with tunable reduced bandgaps was prepared, and it was found that the bandgap-reduced ZnO exhibits weak photocatalytic activity under visible-light irradiation. In addition, ZnO nanocrystals with oxygen vacancies showed excellent antibacterial activities, self-cleaning ability, and wettability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Lin Liu, Jiaqing Liu, Kailong Sun, Jun Wan, Feng Fu, Jun Fan
Summary: In this study, a novel phosphorus-doped Bi2WO6 (PBWO) monolayer with oxygen vacancies was successfully synthesized, showing superior visible-light photocatalytic performance attributed to the synergistic effect of phosphorus doping and oxygen vacancies.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Junfeng Yang, He Su, Yuyang Wu, Daguang Li, Dan Zhang, Hang Sun, Shengyan Yin
Summary: In this study, a well-defined 3D flowerlike mesoporous photocatalyst K-BiOI was successfully prepared by introducing oxygen vacancies (OVs) on the surface of BiOI, leading to improved hydrogen production rate under UV-Vis-light irradiation. The OVs on the K-BiOI surface played a key role in delaying photogenerated carrier recombination during the photoreaction process, resulting in enhanced catalytic performance for efficient H2 production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xiaojun He, Ji-Ting Hou, Xiaoshuai Sun, Paramesh Jangili, Jusung An, Yuna Qian, Jong Seung Kim, Jianliang Shen
Summary: Ultrasound-mediated sonodynamic therapy using sodium molybdenum bronze nanoparticles has shown effective antimicrobial activity against bacterial infections and biofilms, offering a promising approach for biomedical applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
R. Ghorbali, G. Essalah, A. Ghoudi, H. Guermazi, S. Guermazi, A. El Hdiy, H. Benhayoune, B. Duponchel, A. Oueslati, G. Leroy
Summary: Undoped, (Cu, In) doped, and co-doped ZnO nanoparticles were successfully prepared and characterized in this study. Doping and co-doping resulted in changes in the morphology, absorption edge, and photoluminescence spectra of the ZnO nanoparticles. Additionally, doping and co-doping significantly enhanced the photocatalytic activity of ZnO.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jiabao Lv, Xihui Lu, Chucheng Zhou, Xierong Zeng, Ya-yun Li
Summary: This study designed a unique honeycomb structure composite of Bi2MoO6-OVS/ZnIn2S4, which contains ultrathin 2D ZnIn2S4 nanosheets and a rich content of oxygen vacancies. The composite exhibited excellent efficiency in the photocatalytic degradation of norfloxacin.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Rong Dai, Lei Zhang, Jing Ning, Wei Wang, Qiao Wu, Jie Yang, Fuchun Zhang, Jia-ao Wang
Summary: The proposed oxygen vacancy (OVs) and Zn ion doping synergy BiOBr (Zn-VBOB) photocatalyst can more efficiently degrade antibiotics, generating more types of radicals as degradation active species. The mechanism was systematically studied through radical capture experiment and DFT calculation, revealing that the shortened band-gap resulted in easier h(+)-e(-) separation which played a more significant role in generating reactive radicals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Qiuyan Yi, Hang Luo, Hao Xiong, Qiong Liu, Di Zhai, Qiwei Sun, Dou Zhang
Summary: The presence of oxygen vacancies has significant effects on the piezo-photocatalytic performance. Molar-like BaTiO3 with more oxygen vacancies exhibits a superior performance compared to Bamboo-like BaTiO3. The oxygen vacancies enhance light adsorption and O2 activation, resulting in excellent photocatalytic performance.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Chen You, Arthur Dizon, Ming Gao, Vincent Vivier, Mark E. Orazem
Summary: Impedance spectroscopy measurements are affected by high-frequency phenomena caused by electrode geometry, which can be explained by ohmic impedance. By using regression analysis on experimental results and combining them with a physical description model, we found that the parameters of the ohmic impedance obtained are in good agreement with numerical simulations.
ELECTROCHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Chunlong Bai, Ruizhan Chen, Li Tan, Helong Bai, Li Tian, Juan Lu, Ming Gao, Hui Sun, Yu Chi
Summary: The effect of multi-frequency ultrasonic extraction on the yields, physicochemical properties, antioxidant and alpha-glucosidase inhibitory activities of ginseng polysaccharides from different parts was compared. The results showed that multi-frequency ultrasonic extraction increased the yields of polysaccharides and improved their properties and activities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Multidisciplinary
Yuchen Zhang, Tingru Yang, Jia Li, Qi Zhang, Baizhi Li, Ming Gao
Summary: This study presents the design of Ru, O co-doped molybdenum disulfide (MSORx) as an efficient electrocatalyst for hydrogen evolution reaction (HER) and a surface-enhanced Raman scattering (SERS) substrate. The MSOR1 shows excellent HER performance with low overpotentials in both acidic and alkaline solutions, comparable to commercial Pt/C. Additionally, it exhibits outstanding SERS sensitivity and has potential for accurate diagnosis of jaundice.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shengjie Xiong, Jia Li, Maobin Wei, Donglai Han, Jihui Lang, Huilian Liu, Jinghai Yang, Yang Liu, Ming Gao
Summary: Ag-doped MoS2 (AMS(x)) was prepared as a SERS substrate with excellent reproducibility, stability, and recyclability. It exhibited an enhancement factor of 4.07 x 10(6) and a detection limit of 10(-9) M, proving its potential for applications in SERS sensing.
DALTON TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
Haiwei Ren, Zhihang Xu, Ming Gao, Xueye Xing, Zhe Ling, Lichao Pan, Yaqin Tian, Yi Zheng, Wenguang Fan, Weixia Yang
Summary: Microcrystalline celluloses were isolated from four agricultural residues and characterized. The obtained microcrystalline celluloses were composited with polylactic acid to form packing films for the preservation of Lanzhou lily. The preservation effect of lily bulbs packaged by the films was significantly improved, and the films prepared from sweet sorghum straw were found to be the most effective.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Ruoyu Han, Chen Li, Qifan Li, Ting Li, Zhenxing Liu, Xi Chen, Ming Gao, Hanyuan Chen
Summary: Electrical explosion is a unique method for the one-step synthesis of nanoparticles or coatings. In this study, a gm-thick alloy coating made of AlCuTiMoWSn was successfully manufactured using pulsed-discharge-driven intertwined wire explosion. The results showed that the electrical explosion process caused variation in element abundance and phase states at different depths of the coating, with Sn, Al/Cu, and Ti/Mo/W exhibiting different dynamics. The morphology and composition of the coating were characterized using scanning electron microscopy and energy dispersive spectrometer. The findings suggested that the quenching, nucleation, and condensation processes were influenced by fluid dynamics such as turbulent mixing and near-wall vortex. The nozzle configuration was also found to have an impact on the synthesis process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Plant Sciences
Ming Gao, Yi Wu, Lishou Yang, Faju Chen, Liangqun Li, Qiji Li, Yu Wang, Lilang Li, Mei Peng, Yanfang Yan, Juan Yang, Xiaosheng Yang
Summary: The study aimed to investigate the anti-depressant-like effect of fermented Gastrodia elata Bl. and its active chemical constituents. The results showed that fermented Gastrodia elata Bl. could alleviate depression state in mice and protect nerve cells in the brain, with compounds 2-4 identified as the active components.
JOURNAL OF ETHNOPHARMACOLOGY
(2023)
Article
Chemistry, Physical
Rui Su, Shuo Yang, Donglai Han, Mingyue Hu, Yang Liu, Jinghai Yang, Ming Gao
Summary: Surface-enhanced Raman scattering (SERS) is widely studied as an ultrasensitive detection method, but the poor biocompatibility and high synthesis cost of noble metal SERS substrates limit its development. Metal chalcogenide semiconductors have emerged as an alternative, but with lower enhancement effect. In this study, we improved MoS2 by co-modifying it with Ni and O, which enhanced the carrier concentration and mobility of MoS2. The SERS effect of the modified MoS2 was comparable to that of noble metals, and it enabled the low-concentration detection of various substances.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Jia Li, Tingru Yang, Jihui Lang, Huilian Liu, Ming Gao
Summary: A one-pot hydrothermal synthesis method was developed to prepare Fe-doped MoS2 nanoflowers (Fe-MoS2 NFs) as a surface-enhanced Raman spectroscopy (SERS) substrate. The Fe-MoS2 NFs demonstrate high reproducibility, stability, and recyclability, which are advantageous for the development of a sustainable ecological environment. The SERS substrate offers a high enhancement factor of 10(5), attributed to the inducing defects through Fe doping that enhance charge transfer between probe molecules and MoS2. Fe-MoS2 NFs have been utilized for bilirubin detection in serum, showing a linear detection range from 10(-3) to 10(-9) M with a low limit of detection (LOD) of 10(-8) M. The substrate exhibits excellent selectivity for bilirubin in the presence of other potential interfering molecules (dextrose and phosphate), indicating potential applications of MoS2 in clinical diagnosis.
Article
Agronomy
Shujie Ma, Han Zhao, Sijia Liu, Ci Tian, Ming Gao, Yizhen Wang, Jingao Dong, Lihui Zhang
Summary: This study investigates the effectiveness of the active ingredients in Serratia marcescens Ha1, a new microbial herbicide, against agricultural weeds. The results show that the petroleum ether and ethyl acetate extracts of S. marcescens Ha1 have high herbicidal activity. The compounds DB and HPD were identified as the major active ingredients, which exhibit significant inhibitory effects on root and shoot growth in Amaranthus retroflexus.
PEST MANAGEMENT SCIENCE
(2023)
Article
Multidisciplinary Sciences
Fangli Ding, Qing Wang, Chen Xie, Meng Wang, Lu Zhang, Ming Gao, Zongling Yang, Jianrui Ma, Xiaodong Shi, Wei Chen, Shenglin Duan, Peng Yuan, Yali Li, Xishan Ma, Yimin Wu, Jia Liu, Xiaowen Feng, Qingli Cheng, Zichun Wang, Xuyan Li, Jingmei Huang
Summary: This study evaluated the effects of mulberry leaf extract (MLE) addition on the physicochemical properties and blood glucose response of white bread. The results showed that the addition of MLE had no significant effects on the properties of white bread, but slightly changed the color and bitterness. MLE addition reduced the blood glucose rise and GI value of white bread, with a dose-dependent relationship.
Article
Materials Science, Multidisciplinary
Pengfei Zhao, Heyu Zhu, Kunlei Hou, Min Wang, Xianchao Hao, Weiwei Xing, Ming Gao, Xing-Qiu Chen, Ying-Che Ma
Summary: The influence of temperature on the deformation mechanisms of a new Ni-based superalloy named K4800 was investigated. The study found that temperature has a significant impact on the alloy's deformation mechanisms, and the activation of thermally assisted processes can reduce the strengthening effect of certain phases and impair the high-temperature strength of the alloy. Additionally, alloying elements were used to alleviate the strength degradation at elevated temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Chemistry, Multidisciplinary
Wenjing Zheng, Yifan Zhang, Ming Gao, Meng Qiu
Summary: The elements of the pnictogen group, such as phosphorus, arsenic, antimony and bismuth, have been widely used in medicine since ancient times and now, as 2D nanomaterials, they have significant potential in precision treatment of diseases.
CHEMICAL COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Jiahao Chen, Minghao Ma, Ruixia Wang, Ming Gao, Ligang Hu, Sijin Liu, Ming Xu
Summary: Understanding how mercury species cause cellular impairments at the molecular level is crucial for explaining the detrimental effects of mercury exposure. This study reveals that Hg2+ and CH3Hg+ can induce ferroptosis in renal cells and that GPx4 plays a key role in this process. Moreover, CH3Hg+ can inhibit the activity of GPx4 through direct binding with the selenol group in the enzyme, while selenite supplementation can enhance the expression and activity of GPx4, mitigating the cytotoxicity of CH3Hg+.
Article
Environmental Sciences
Si Wu, Huicong Liang, Bingyan Xu, Qi Zhang, Hougang Fan, Jingshu Wang, Qiang Han, Ming Gao, Jinghai Yang, Jihui Lang
Summary: The construction of efficient catalysts for the treatment of organic pollutants in water is crucial. In this study, lamellar-like Cu-Al layered double hydroxides (CuAl-LDHs) were synthesized and tested for the degradation of tetracycline (TC) using PMS activation. The results showed that the degradation efficiency of TC increased up to 93% within 10 minutes for a Cu/Al mole ratio of 3:1. Calcination of the optimal catalyst at 300 degrees Celsius further increased the degradation efficiency to 96%. Sulfuric radicals and singlet oxygen were identified as the main factors influencing the degradation characteristics.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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)