Review
Electrochemistry
Yao Liu, Wei Li, Yongyao Xia
Summary: While carbon, oxide, and silicon-based materials have limitations in current LIB applications, polyanionic compounds have gained attention for their ability to stabilize structures, adjust redox couples, and provide migration channels for guest ions, leading to electrode materials with long-term cycling, high energy density, and outstanding rate capability.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Xiujuan Chen, Wei Li, Shanshan Hu, Novruz G. Akhmedov, David Reed, Xiaolin Li, Xingbo Liu
Summary: The application of a polyvinyl alcohol coating on the zinc anode has successfully achieved dendrite-free and long-life aqueous zinc batteries, demonstrating superior cyclability and durability. The insights gained from this research shed light on the future development of stable zinc anodes.
Review
Chemistry, Multidisciplinary
Md Al-Amin, Saiful Islam, Sayed Ul Alam Shibly, Samia Iffat
Summary: This article discusses the advantages and drawbacks of zinc-ion batteries compared to lithium-ion batteries, with a focus on cathode materials, electrolytes, and approaches to improve the electrochemical performance. It also explores polymer gel electrolytes and electrodes for flexible zinc-ion batteries, as well as the importance of temperature and additives in these batteries.
Article
Materials Science, Multidisciplinary
Huaide Chen, Guojun Xu, Chenxin Jin, Jize Wu, Linwu Xiong, Xiaomin Li, Fugen Sun, Lang Zhou, Zhihao Yue
Summary: This paper presents a method of using C2H2 as a carbon source to coat SiOx material in a rotating chemical vapor deposition furnace, resulting in hard carbon coated SiOx (SiOx@C) material. The discharge specific capacity of SiOx@C remained at 1116.8 mAh g-1 after 140 cycles at a rate of 0.5C, which is 539.8 mAh g-1 higher than SiOx.
Article
Chemistry, Analytical
Jiarui Huang, Qingshan Dai, Chengjie Cui, Hiabo Ren, Xiaojing Lu, Yong Hong, Sang Woo Joo
Summary: A cake-like porous Fe3O4 coated with a carbon layer (Fe3O4@C nanocakes) has been prepared and used as an anode for lithium-ion batteries (LIBs). The Fe3O4@C nanocakes show superior electrochemical properties and rate behavior, making them a potential electrode for LIBs with high specific capacities.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Qiongqiong Lu, Congcong Liu, Yehong Du, Xinyu Wang, Ling Ding, Ahmad Omar, Dada Mikhailova
Summary: A facile surface chemistry route has been developed to create an Ag coating on zinc metal, guiding uniform zinc deposition and improving electrochemical performance of ZIBs. Direct visualization and microscopy images confirm uniform zinc deposition on Ag-coated Zn anodes, enabling sustained plating/stripping cycles and improved performance in full cells paired with a V2O5-based cathode.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xi Chen, Laura C. Loaiza, Laure Monconduit, Vincent Seznec
Summary: The 2D Si-Ge alloy materials, known as siliganes, have been developed for use as anodes in Li-ion batteries, offering reasonable cost and promising electrochemical performance. Among them, the siligane_Si0.9Ge0.1 showed the best performance, with a reversible capacity of 1325 mA h g-1, high capacity retention, and coulombic efficiency at a current density of 0.05 A g-1 after 10 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Applied
Shiyin Xie, Yang Li, Liubing Dong
Summary: In this study, a Cu-Zn alloy network-modulated zinc deposition interface was reported for stable anode-free zinc-ion batteries (ZIBs). The alloy network can stabilize the zinc deposition interface and enhance zinc plating/stripping kinetics. The results showed that ZIBs with the alloy network-modulated zinc deposition interface demonstrated high efficiency and stability, outperforming ZIBs with unmodified zinc deposition interface.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Peijie Xu, Chunyuan Wang, Bingxin Zhao, Yi Zhou, Hongfei Cheng
Summary: Aqueous zinc-ion batteries are highly promising due to their high energy density, specific capacity, low cost, and low pollution, but face limitations such as capacity fading, corrosion, side reactions, and hydrogen evolution. The use of halloysite nanotubes coating can effectively mitigate these limitations, improve battery performance, and offer a new approach to making environmentally friendly and stable aqueous zinc-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Congcong Liu, Qiongqiong Lu, Ahmad Omar, Daria Mikhailova
Summary: By utilizing a facile pretreatment method to prepare Cu coated Zn (Cu-Zn), this study successfully achieved uniform Zn deposition for improved ZIBs, leading to enhanced cycling performance and longer cycle life.
Article
Chemistry, Physical
Ting -Ting Wei, Panpan Peng, Shao-Jie Yang, Peng-Fei Wang, Ting-Feng Yi
Summary: Titanium-based oxide materials have potential as anode materials for lithium-ion batteries due to their structural stability and safety performance. However, poor conductivity hampers their practical application. In this study, porous ZnTiO3 rods and ZnTiO3/polytopamine (PDA) composites were synthesized to address this issue. The ZnTiO3/PDA (6.2 wt%) anode showed excellent cycling stability and high specific charge capacity. PDA coating enhanced the electrochemical reaction activity and mitigated volume change during the electrochemical reaction process.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Noto Susanto Gultom, Teng-Sheng Hsieh, Shih-Chieh Liao, Guan-Yu Ko, Dong-Hau Kuo
Summary: This study aims to explore a fast charging lithium-ion battery material as an alternative to the traditional graphite electrode. By using molybdenum-niobium oxide (MNO) as the anode material and lithium doping, along with the coating of a conductive nitrogen-doped carbon layer, the charging speed and capacity retention of the battery were significantly improved.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Fei Zhang, Miaomiao Wu, Xingchao Wang, Qian Xiang, Yan Wu, Juan Ding, Ying Sun
Summary: This study reports a novel organic electrode material, hexalithium salt of mellitic acid (Li6C12O12), which shows promising characteristics including low cost, high capacity, non-toxicity, and environmental friendliness for lithium-ion batteries (LIB) and dual-ion batteries (DIB). The electrochemical and spectroscopic analysis confirmed a reversible coordination reaction mechanism based on carboxylic carbonyl and Li+ ions. Li6C12O12 achieved large reversible capacities of 730 mA h g(-1) at 0.21 A/g and 372 mA h g(-1) even at 2 A/g. Moreover, Li6C12O12 electrode exhibited excellent performance in full LIB and DIB, showing high capacity and cycling stability. This work provides a new perspective on designing and tailoring organic electrode materials for high-performance lithium-ion batteries and dual-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xinlong Li, Xinlin Huang, Yuanzhi Chen, Jie Mei, Wanjie Xu, Laisen Wang, Dong-Liang Peng
Summary: The study demonstrated the preparation of monodisperse spinel Li4Ti5O12 (LTO) particles coated with a carbon layer through a solid-phase sintering reaction, which can enhance the rate performances of batteries.
ELECTROCHIMICA ACTA
(2021)
Review
Energy & Fuels
Xiangyang Zhang, Qianyun Shen, Xinyi Lin, Chucheng Luo, Youming Shen, Xiaobing Huang
Summary: This review summarizes the application of the ion-confinement effect in the construction of artificial interface coatings and functional separators, and discusses in detail the mechanism of this effect in various materials. The ion-confinement effect can regulate the zinc ion flux and prevent the formation of zinc dendrites, which has the potential to promote the development of aqueous zinc ion batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Chemical
Ru-Ling Tseng, Hai Nguyen Tran, Ruey-Shin Juang
Summary: Temperature has a significant effect on adsorption processes, particularly on adsorption equilibrium. While the effect of temperature on adsorption kinetics has been less explored, likely due to a lack of a simple and suitable kinetic model. This study analyzed kinetic data using the Elovich equation and found that most adsorption processes had an activation energy in the range of 12.1 to 25.6 kJ mol(-1).
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Biochemistry & Molecular Biology
Mai Lien Tran, Ying-Shr Chen, Ruey-Shin Juang
Summary: This study investigated the primary recovery of surfactin from precipitation-pretreated fermentation broths using one-stage dead-end and cross-flow ultrafiltration. The results showed that the use of a polyethersulfone membrane and addition of ethanol were effective in recovering surfactin under suitable conditions. The Hermia model was used to understand membrane fouling mechanisms, and appropriate cleaning agents and methods were selected to restore membrane flux.
Article
Chemistry, Physical
Chien-Te Hsieh, Siyong Gu, Yasser Ashraf Gandomi, Chun-Chieh Fu, Po-Yu Sung, Ruey-Shin Juang, Cheng-Cheung Chen
Summary: This study aims to design and synthesize antiviral nanomaterials to inhibit the development of the coronavirus through interaction with the virus. The materials prepared in this study demonstrated superior performance in virus inhibition, as shown through unique preparation techniques and biocompatibility testing. Additionally, the addition of specific substances enhanced the adsorption and inhibition of the materials on the virus surface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Editorial Material
Environmental Sciences
Hai Nguyen Tran, Jean-Claude Bollinger, Eder C. Lima, Ruey-Shin Juang
Summary: Two flaws in concepts related to the Radke-Prausnitz model and the Langmuir constant unit were identified and corrected in the paper. The nonlinear form of the Radke-Prausnitz model and the misconception about the unit of the Langmuir constant were thoroughly discussed to avoid unexpected mistakes in adsorption studies.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Mai Lien Tran, Thi Tuong Van Tran, Ruey-Shin Juang, Chi Hieu Nguyen
Summary: In this study, chitosan (CS) and graphene oxide (GO) were combined to synthesize CS/GO composites with different GO contents. The combination of CS and GO not only improved the surface area by reducing agglomeration of GO sheets, but also significantly enhanced the adsorption capacity of cationic dye on CS. The Langmuir adsorption capacity of methylene blue (MB) reached 259.5 mg/g at pH 8 and 30 degrees C for the CS/GO12 material. The composite showed good adsorption-regeneration performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Green & Sustainable Science & Technology
Cheng-Wei Lin, Hai Nguyen Tran, Ruey-Shin Juang
Summary: This study investigated the techno-economic analysis for wastewater reclamation in a midstream petrochemical factory in Taiwan. Caprolactam is the main product of this factory. Different treatment methods involving membrane-based processes were proposed to reclaim and recycle wastewater for cooling water replenishment. The economic analysis showed that the combination of ultrafiltration and reverse osmosis (Scheme 3) was the best choice.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Nanoscience & Nanotechnology
Yu-Sheng Hsiao, Edgar Daniel Quinones, Shih-Chieh Yen, Jiashing Yu, Ji-Tseng Fang, Peilin Chen, Ruey-Shin Juang
Summary: Electric cell-substrate impedance sensing (ECIS) is an innovative approach for the label-free and real-time detection of cell morphology, growth, and apoptosis. In this study, poly(3,4-ethylenedioxythiophene)-poly-(styrenesulfonate) (PEDOT:PSS) conducting polymer (CP)-based bioelectrodes were developed for the simultaneous drug release and real-time biosensing of cancer cell viability. This device can reliably monitor impedance signal changes correlated with cell viability while exhibiting excellent properties for both drug encapsulation and on-demand release.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ruey-Shin Juang, Chien-Te Hsieh, Chia-Min Liu, Ting-An Lin, Yasser Ashraf Gandomi
Summary: We developed an electrochemical biosensor using reduced graphene oxide (rGO) incorporated onto a conductive polymer poly(3,4-ethoxylenedioxythiophene) (PEDOT) and decorated with molybdenum di-sulfide (MoS2) nanoparticles for the detection of parathyroid hormone (PTH). The sensitivity of the sensors was 0.0011 (mu A center dot mL)/pg with a detection limit of 1.457 pg/mL. The sensors also showed high selectivity towards PTH with the existence of interfering substances diluted to different concentrations.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Engineering, Environmental
Hai Nguyen Tran, Jean-Claude Bollinger, Stefano Salvestrini, Khim Hoong Chu, Ruey-Shin Juang
Summary: The Radke-Prausnitz model, a three-parameter model belonging to the Langmuir-Freundlich-type equation, is analyzed in this study to promote its proper application in adsorption research. The correct expression, citation, and units of its parameters are provided. The model has important implications for understanding adsorption processes.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Chemical
Chi Hieu Nguyen, Thi Tuong Van Tran, Mai Lien Tran, Ruey-Shin Juang
Summary: Ag-doped TiO2 nanomaterials were prepared using a one-step sol-gel technique. The combination of Ag with TiO2 enhanced the lifetime of photogenerated electron-hole pairs and widened the photocatalytic activity in the visible light region, leading to improved photocatalytic activity.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Biochemistry & Molecular Biology
Mai Lien Tran, Chi Hieu Nguyen, Kuan-Yan Chu, Ruey-Shin Juang
Summary: This study experimentally confirmed the absorption of carbon dioxide (CO2) from CO2-N2 gas mixtures using water and monoethanolamine (MEA) solution in polypropylene (PP) hollow-fiber membrane contactors. Gas flow occurred inside the module while the absorbent liquid flowed counter-currently outside the shell. Various gas- and liquid-phase velocities as well as MEA concentrations were tested, and the effect of pressure difference between the gas and liquid phases on CO2 absorption was investigated. A simplified mass balance model incorporating the non-wetting mode and overall mass-transfer coefficient was proposed to predict the effective length of the fiber for CO2 absorption. The model also emphasized the significance of membrane wetting when using high concentrations of MEA in the chemical absorption process.
Article
Nanoscience & Nanotechnology
Ndumiso Vukile Mdlovu, Ruey-Shin Juang, Meng-Tzu Weng, You-Sheng Lin, Kuen-Song Lin
Summary: In this study, magnetic nanospheres loaded with doxorubicin were synthesized and evaluated for their therapeutic effects in mice. The results showed that these nanospheres exhibited significant growth inhibition of tumors, indicating their potential for cancer drug delivery.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Ruey-Shin Juang, Chien -Te Hsieh, Ting -An Lin, Yu -Chia Shao, Yasser Ashraf Gandomi
Summary: In this study, an efficient electrochemical sensor using SPCE modified by rGO-PDDA composites was developed for the detection of acetaminophen with high sensitivity and excellent selectivity. The sensor exhibited a wide concentration range, an ultralow detection limit, and successfully detected acetaminophen in human urine samples.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Jaysiva Ganesamurthi, Xiang-Ren Chen, Ruey-Shin Juang, Siang -Yu Wei, Da -Yuan Lin
Summary: In this study, a cobalt germanium oxide-graphitic carbon nitride nanocomposite was developed for the electrochemical detection of ornidazole. The nanocomposite exhibited superior selectivity and high sensitivity towards ornidazole, and demonstrated good repeatability and stability in the analysis of real samples.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Environmental
Kuen-Song Lin, Ndumiso Vukile Mdlovu, Ruey-Shin Juang, Mau-Tsu Tang
Summary: In Taiwan, the excessive emissions of pollutant gases from over 14 million motorcycles contribute significantly to air pollution in urban areas. In this study, the fine structures and oxidation states of Pt/Pd/Rh/Ce species in washcoat catalysts of motorcycle catalytic converters were investigated. The results showed that using Pt/Rh/Pd/Ce species on ceria/alumina washcoat effectively controlled the emissions of HCs pollutants through CO exclusion. The presence of an oxygen-rich environment facilitated the oxidation of Rh and Pd species, while the oxidation of Pt species was relatively more difficult. The transition metal in the washcoat catalysts was found to be consistent with the La-O distances at approximately 2.49 angstrom.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)
