Article
Chemistry, Multidisciplinary
Ding-Yuan Kuo, Brandi M. Cossairt
Summary: In the development of next-generation electronics and energy devices, intercalation compounds of transition metal dichalcogenides (TMDCs) are gaining attention for their unique properties. A versatile method for preparing intercalated TMDCs in a thin-film morphology has been reported in this study, successfully preparing existing intercalation compounds and intercalating phenazine and benzoquinone into MoS2 and WS2 for the first time.
MATERIALS HORIZONS
(2022)
Review
Chemistry, Physical
Le Li, Dan Zhang, Yanhong Gao, Jianping Deng, Yuchun Gou, Junfei Fang
Summary: This article systematically reviews the recent research and application progress of electric field-driven exfoliating MoS2 nanosheets, discussing the possible mechanisms of different exfoliation methods and their effects on the crystal structure, as well as potential applications. The challenges and opportunities for the electric field-driven exfoliation of 2D MoS2 and applications are also addressed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Jiapeng Liu, Huibin Liu, Wenchao Peng, Yang Li, Fengbao Zhang, Xiaobin Fan
Summary: A partial etching strategy was developed to control the thickness and lateral size of MoS2 and WS2 nanosheets, resulting in increased fraction of edges and improved yield of monolayer MoS2 and WS2 nanosheets. The optimized hybrids exhibited excellent hydrogen evolution performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Xiaoyu Song, Ratnadwip Singha, Guangming Cheng, Yao-Wen Yeh, Franziska Kamm, Jason F. Khoury, Brianna L. Hoff, Joseph W. Stiles, Florian Pielnhofer, Philip E. Batson, Nan Yao, Leslie M. Schoop
Summary: Liquid-phase chemical exfoliation enables large-scale production of two-dimensional (2D) materials for various applications. However, air-sensitive 2D materials for quantum technologies often cannot be used outside the laboratory due to depreciation of their physical performance after chemical processing. In this study, we developed a simple method to create a stable and surfactant-free superconducting ink containing phase-pure 1T'-WS2 monolayers, which are isostructural to the air-sensitive topological insulator 1T'-WTe2. These printed films exhibit metallic behavior at room temperature and superconductivity below 7.3 kelvin, with strong anisotropic unconventional superconducting properties. Additionally, the films remain stable under ambient conditions for at least 30 days. Our findings demonstrate the commercial accessibility of nontrivial 2D materials through chemical processing.
Article
Chemistry, Multidisciplinary
Wenguang Zhang, Hui Gao, Chunsan Deng, Ting Lv, Sanlue Hu, Hao Wu, Songyan Xue, Yufeng Tao, Leimin Deng, Wei Xiong
Summary: A new memristor architecture based on WS2/MoS2 2D semiconducting heterojunction is proposed to eliminate material degradation during set/reset processes and achieve a large switching on/off ratio and extended endurance. This new design shows advantages over traditional structures and has the potential for large-scale integrated memristor matrix in future artificial intelligence and brain-like computing systems.
Article
Chemistry, Physical
Zehui Sun, Shiming Zhao, Zhihao Gu, Wei Ma
Summary: The intrinsic activities of single MoS2 flakes toward the hydrogen evolution reaction (HER) were investigated by single nanoparticle collision electrochemical measurements. It was found that bilayer MoS2 flakes show the highest HER performance and the greatest magnetic enhancement among the different layers of MoS2 flakes. This is due to the abundance of exposed edge sites and sulfur vacancies in bilayer MoS2 flakes, which accelerate the reaction kinetics of HER and increase the ferromagnetism properties.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Zhaojun Li, Farnia Rashvand, Hope Bretscher, James Xiao, Claudia Backes, Akshay Rao
Summary: In this study, the photophysical properties of monolayer-enriched WS2 dispersions synthesized by high-volume liquid phase exfoliation (LPE) were evaluated and compared with untreated and chemically treated mechanically exfoliated (ME) WS2 monolayers. The LPE materials showed characteristics of high-quality semiconducting materials, such as smaller Stokes shift, narrower photoluminescence line widths, and longer exciton lifetimes. The poor photoluminescence quantum efficiencies (PLQEs) in LPE materials were found to be due to energy transfer between the direct-gap monolayers and indirect gap few-layers. It is suggested that improving strategies to purify LPE materials and reduce aggregation could enable LPE TMDs to have high potential in optoelectronic device applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Jiyeon Kim, Changik Im, Chan Lee, Jinwoo Hwang, Hyoik Jang, Jae Hak Lee, Minho Jin, Haeyeon Lee, Junyoung Kim, Junho Sung, Youn Sang Kim, Eunho Lee
Summary: Recently, the attention on two-dimensional transition metal dichalcogenides (TMDs) like molybdenum disulfide (MoS2) has increased due to their unique properties. To modulate the electronic properties and structure of TMDs, controlling chalcogenide vacancies is crucial, but existing methods have limitations such as plasma damage. In this study, a novel solvent-assisted vacancy engineering (SAVE) method was introduced to precisely control sulfur vacancies in MoS2. The non-destructive and scalable SAVE method can expand its application in memory devices and provide insights into charge transport mechanisms.
NANOSCALE HORIZONS
(2023)
Article
Energy & Fuels
Xin Ma, Zhiying Lin, Tao Feng, Gang Liu
Summary: The study presents a zero/one/two-dimensional heterostructured catalyst (Ag/MCNT/WS2) for efficient hydrogen evolution in both acidic and alkaline environments. The catalyst showed significantly enhanced electrocatalytic performance compared to WS2 and the binary composite Ag/MCNT. The strategy of constructing multidimensional interfaces with conductive CNTs and Ag nanoparticles boosts the electrocatalytic performance of WS2.
Article
Materials Science, Multidisciplinary
Mohsen Balaei, Rouhollah Karimzadeh, Tayebeh Naseri
Summary: This paper investigates the electrical conductivity and nonlinear properties of MoS2 in relation to laser beam interactions, deriving parameters for linear and quadratic electro-optical effects. The potential for calculating optical nonlinear response in TMDs lays the groundwork for designing a new generation of nonlinear devices based on TMDs.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Engineering, Electrical & Electronic
Aashi Gupta, Neha Sakhuja, Ravindra Kumar Jha, Navakanta Bhat
Summary: In this work, an ultrasensitive, low power humidity sensor based on Au nanoparticle-functionalized WS2 nano-sheets was demonstrated. The functionalized nanosheets showed a two orders of magnitude enhancement in humidity sensing response compared to the pristine ones, with improved sensitivity and response/recovery time. A probable mechanism for the humidity sensing of Au-functionalized WS2 NS was also suggested in this study.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
Raheela Naz, Waseem Abbas, Qinglei Liu, Sameera Shafi, Sehrish Gull, Suleman Khan, Tahir Rasheed, Guofen Song, Jiajun Gu
Summary: Covalently functionalized 1T-MoS2 (Fc-1T-MoS2) nanosheets are synthesized by the chemical reaction between electrochemically exfoliated 1T-MoS2 nanosheets and iodobenzene. The NH2Ph ring functionality and 1T-MoS2 phase enhance the electrochemical performance of supercapacitors, resulting in fast charge transport and high charge storage capacity. Fc-1T-MoS2 exhibits a high specific capacitance of 501 F g-1 at a current density of 1 A g-1 with a capacitance retention of 76.32% after 2000 cycles, which is 2.6 orders of magnitude higher than that of bare 1T-MoS2 nanosheets. This study reveals the effect of MoS2 nanosheet functionalization on supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Kunkun Wang, Qi Han, Beizhao Chen, Bei Liu, Zhongying Wang
Summary: Two-dimensional MoS2 nanomaterials, especially electrochemically exfoliated E-MoS2, exhibit high adsorption capacity and excellent chemical stability for the removal of lead. The results suggest that E-MoS2 is a promising material for long-term application in water treatment due to its high efficiency and resistance to oxidation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
I-Wen P. Chen, Yan-Ming Lai, Wei-Sheng Liao
Summary: Research shows that chlorophyll extracts can be used as an efficient exfoliant to produce MoS2/WS2 heterostructure for hydrogen production. This heterostructure exhibits higher photocurrent densities and stability under neutral electrolyte conditions compared to individual constituents.
Article
Chemistry, Multidisciplinary
Pingping Ni, Mbaye Dieng, Jean-Charles Vanel, Ileana Florea, Fatima Zahra Bouanis, Abderrahim Yassar
Summary: This study investigates the preparation method of MoS2 thin films and their application in chemical sensing. Multilayered MoS2 nanosheet dispersions were successfully produced using a high-shear mixing method, and MoS2 thin films were manufactured by vacuum-assisted filtration. The results show that MoS2 thin films have good crystallinity and conductivity, and exhibit high sensitivity to low concentrations of NO2.
Article
Materials Science, Paper & Wood
Shuai Li, Xiaochun Yang, Yingying He, Yanan Wang, Daogui Liao, Yunhua Chen, Huihong Xie, Hongxia Liu, Li Zhou
Summary: A-CG monolith, a high-efficiency solar evaporation material, demonstrates lower evaporation enthalpy, efficient water transport channels, and a 93.6% solar radiation conversion efficiency. With a wind speed of 3 m/s, it achieves an evaporation rate of 5.67 kg/m²h.
Article
Materials Science, Multidisciplinary
Jinhui Qiu, Zhengyu Huang, Baotao Huang, Guan Wang, Li Zhou
Summary: This study reports the synthesis of a novel S-rosin copolymer through inverse vulcanization of sulfur with natural rosin. The resulting copolymer possesses good solubility and excellent UV-blocking properties.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Weilian Wu, Hongchao Niu, Shiqing Lai, Chanjuan Liu, Li Zhou, Xiaohua Huang
Summary: A series of random 6FDA-MFPAP/BAMF co-polyimides were synthesized using a novel diamine MFPAP, a commercial diamine BAMF, and a dianhydride 6FDA. The co-polyimides exhibited excellent thermal, optical, and hydrophobic properties, as well as superior gas permeability compared to commercial materials. The co-polyimides with MFPAP/BAMF molar ratios of 2:1 and 1:1 showed the best gas separation performance for the gas pairs He/CO2 and O-2/N-2, respectively, close to the Robeson upper limit.
Article
Nanoscience & Nanotechnology
Xinyu Huang, Liheng Li, Shuaifei Zhao, Lei Tong, Zheng Li, Zhuiri Peng, Runfeng Lin, Li Zhou, Chang Peng, Kan-Hao Xue, Lijuan Chen, Gary J. Cheng, Zhu Xiong, Lei Ye
Summary: This study successfully developed a novel multifunctional 3D graphene-based catalytic membrane for simultaneous water purification and clean energy generation. Green laser scribing technology was used for efficient fabrication. The fabricated membrane exhibited high flux and versatile super-adsorption capacities, with the ability to self-clean and restore adsorption capacity for long-term use.
NANO-MICRO LETTERS
(2022)
Article
Chemistry, Physical
Daogui Liao, Yanan Wang, Peiying Xie, Chunzhi Zhang, Mingxing Li, Hongxia Liu, Li Zhou, Chun Wei, Chuanbai Yu, Yunhua Chen
Summary: In this study, a robust strategy was demonstrated to fabricate compressible and multifunctional carbon aerogels utilizing freeze-drying of cellulose nanofibers and graphene oxide co-stabilized Pickering emulsion gel, followed by high-temperature annealing. The resulting carbon aerogel exhibited tunable mechanical, hydrophilic, and hydrophobic properties, and showed great potential for various applications such as sensors, thermal insulation, and photothermal conversion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Guangsheng Lv, Xuanjun Dai, Guangming Lu, Lei Ye, Guan Wang, Li Zhou
Summary: A portable nanofibrous composite film sensor based on biocompatible poly(vinyl alcohol) (PVA) and fluorescent sulfur quantum dots (SQDs) was prepared using the electrospinning method. The PVA/SQDs film exhibited strong and stable solid-state fluorescence due to the stabilization of PVA, overcoming the fluorescence quenching effect of dried SQDs powder. The PVA/SQDs film showed sensitive and selective fluorescence quenching behavior towards Fe3+ with good linear relationship and a detection limit of 0.69 mu M.
Article
Polymer Science
Shiqing Lai, Yufei Shi, Weilian Wu, Bowen Wei, Chanjuan Liu, Li Zhou, Xiaohua Huang
Summary: A novel fluorinated diamine monomer BASA was designed and synthesized, and a series of polyimides were obtained through high-temperature polycondensation. The polymers exhibited good thermal stability, excellent solubility, optical properties, hydrophobicity, and promising gas transport properties. These polymers could be applied in optics and gas separation.
Article
Food Science & Technology
Yongjin Sun, Ke Yang, Xin Zhang, Lifen Li, Huixiang Zhang, Li Zhou, Jun Liang, Xia Li
Summary: This study investigated the structural characteristics, physical properties, and binding effects of polysaccharide and its fractions from Passiflora edulis peel on lipid, cholesterol, and bile acids. The findings showed that the polysaccharide fractions had different physicochemical properties and binding activities, with WPEP-F2 displaying the best lipid, cholesterol, and bile acid-binding activities. These results provide a theoretical foundation for the development of Passiflora edulis peel polysaccharide-related foods and the promotion of its application in functional food industries.
Correction
Materials Science, Composites
Sihua Zeng, Jisuan Tan, Tao Wen, Xiaohua Huang, Li Zhou
COMPOSITES COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Shi Deng, Jiwen Long, Xuanjun Dai, Guan Wang, Li Zhou
Summary: Water pollution caused by hexavalent chromium ions has become a matter of concern due to their high toxicity and carcinogenic properties. This study presents a facile strategy to prepare a chitosan-sulfur quantum dots composite hydrogel that can effectively sense and adsorb Cr(VI) ions. The hydrogel demonstrates excellent fluorescence stability and sensitivity towards Cr(VI) ions, with a detection limit of 176.2 nM. Additionally, the hydrogel shows high uptake capability and favorable reusability for Cr(VI) ion removal. Overall, this work provides an effective approach to prepare multifunctional hydrogels for water contaminant monitoring and removal.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Tao Wen, Jiwen Long, Guangming Lu, Jisuan Tan, Li Zhou
Summary: A simple one-pot approach for the preparation of chitosan-capped sulfur nanoparticles (CS-SNPs) is presented. The CS-SNPs exhibit small and uniform size, good aqueous dispersibility and stability, and favorable antioxidant and antibacterial activities.
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2023)
Review
Chemistry, Physical
Yanhua Huang, Qingli Chen, Hai Zeng, Chen Yang, Guan Wang, Li Zhou
Summary: Selenium is a crucial trace element with significant effects on human health. Elemental selenium nanoparticles (SeNPs) have gained interest due to their low toxicity, high antioxidant activity, and wide applicability. This review provides a comprehensive summary of SeNPs synthesis, characterization, properties, and applications, while also addressing challenges and future trends in the field.
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2023)
Article
Materials Science, Biomaterials
Weiling Peng, Lixia Li, Yu Zhang, Haibing Su, Xiaohe Jiang, Haimeng Liu, Xiaohua Huang, Li Zhou, Xing-Can Shen, Chanjuan Liu
Summary: A multifunctional hydrogel with near-infrared light-activated mild photothermal and gaseous antimicrobial activity has been developed for biofilm infection treatment. The hydrogel is injectable, flexible, and has rapid self-healing ability. It exhibits excellent bactericidal activity and promotes wound healing.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Jisuan Tan, Yiheng Song, Xuanjun Dai, Guan Wang, Li Zhou
Summary: This study presents a simple method to improve the performance of sulfur quantum dots (SQDs) by using hyperbranched polyglycerol (HPG) as a ligand to direct the synthesis of dendritic HPG-SQD nanocomposites from cheap elemental sulfur. The HPG-SQDs exhibit excellent biocompatibility, photostability, aqueous solubility, and fluorescence properties, making them suitable for monitoring hydroxyl radicals (OH) and ascorbic acid (AA) in cells.
NANOSCALE ADVANCES
(2022)
Article
Materials Science, Biomaterials
Xiaohua Huang, Lei Tang, Lin Xu, Yu Zhang, Guangyao Li, Weiling Peng, Xiaolu Guo, Li Zhou, Chanjuan Liu, Xing-Can Shen
Summary: This study developed an injectable multifunctional hydrogel with tumor therapy, antibacterial treatment, and wound healing properties. The hydrogel, GG@PANI(Fe)-borax, exhibited injectability, self-healing ability, and reversible gel-sol transformations. The hydrogel also had near-infrared responsive photothermal conversion capability and showed excellent photothermal effects and controllable drug release for melanoma treatment. Additionally, the hydrogel demonstrated antibacterial activity and promoted wound repair.
JOURNAL OF MATERIALS CHEMISTRY B
(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)