Article
Electrochemistry
Jianghua Wu, Waseem Raza, Peng Wang, Arshad Hussain, Yangbin Ding, Jian Yu, Yanyan Wu, Jie Zhao
Summary: A one-pot and energy-saving method was developed to manufacture defective manganese oxide materials. The insertion of zinc ions improves manganese oxide conductivity, resulting in a significant increase in the number of defects in the lattice, providing abundant active sites for energy storage.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Tongtong Xu, Ke Yin, Jianmin Gu, Qing Li, Zixun Fang, Zijia Chen, Yinglu Wang, Nianrui Qu, Siheng Li, Zhourong Xiao, Desong Wang
Summary: Defect engineering, achieved by controlling the redox reaction process, allows for the regulation of electronic configuration at the atomic level and thus improve the electrochemical performance of mesoporous manganese dioxide. The construction of defects in alpha-MnO2 results in an efficient supercapacitor material with a balanced Mn3+/Mn4+ ratio and oxygen vacancy concentration. The optimized alpha-MnO2-0.25 electrode material exhibits outstanding specific capacitance and cycle stability, making it promising for high energy density supercapacitors.
Article
Materials Science, Multidisciplinary
Jiyuan Liang, Zhen Wang, Litao Huang, Pan Zou, Xiaolang Liu, Qian Ni, Xinyu Wang, Wenjun Wang, Runming Tao
Summary: A novel nitrogen-doped graphene with different microstructures is synthesized through an in situ interlamination self-assembling method, using in situ formed Fe3(PO4)2 and organoamine as the catalyst and carbon source, respectively. Bubble-like and sheet-like nitrogen-doped graphene are obtained by tuning the alkyl chain length in organoamine, octylamine, and dodecylamine. The as-prepared graphene electrode material exhibits good rate capability and cyclic performance, delivering promising practicality for energy storage applications.
ACS MATERIALS LETTERS
(2023)
Article
Electrochemistry
Jianghua Wu, Yasir Faiz, Saghir Hussain, Faisal Faiz, Nighat Zarshad, Anis Ur Rahman, Muhammad Amir Masood, Yu Deng, Xiaoqing Pan, Mashkoor Ahmad
Summary: Defect-rich nanostructures, particularly copper doped manganese dioxide nanowires, were synthesized using a one pot and energy saving technique. The addition of copper ions enhanced conductivity and introduced defects in the lattice structure, resulting in an abundance of active sites for energy storage. The Cu0.05MnO2 structure exhibited the highest capacitance and capacitance retention compared to other structures. The fabricated asymmetric supercapacitor (CuMO-2/AC) demonstrated high capacitance, energy density, and cycle stability, highlighting the importance of defect engineering in the development of high-performance supercapacitors.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Burcu Ustun, Hamide Aydin, Serkan Naci Koc, Umran Kurtan
Summary: Amorphous zinc oxide incorporated with sulfur-doped carbon composite nanofiber (ZnO@S-CNF) was prepared through electrospinning and calcination for supercapacitor applications. Its self-supporting electrode achieved a high capacitance of 209 F/g at 1 A/g and sustained 158 F/g at 10 A/g. An asymmetric supercapacitor (ASC) assembled with ZnO@S-CNF as the positive electrode and carbon nanofiber as the negative electrode showed a specific energy of 11.2 Wh/kg at a specific power of 900 W/kg in the voltage range of 0-1.8 V. The enhanced performance was attributed to the increased surface area, micropore volume, and heteroatom content. This study provides a feasible approach for developing carbon composite electrodes with remarkable performance.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
V. S. Amar, J. D. Houck, B. Maddipudi, T. A. Penrod, K. M. Shell, A. Thakkar, A. R. Shende, S. Hernandez, S. Kumar, R. B. Gupta, R. V. Shende
Summary: In this study, heavy bio-oil (HBO) and hydrochar were generated from unhydrolyzed solid (UHS) derived from corn stover through hydrothermal liquefaction (HTL). The effects of different parameters on hydrochar yield and properties were investigated. The maximum specific capacitance was observed for the hydrochar electrode materials obtained at the HTL processing conditions of 275 degrees C temperature, 1 h reaction time, and specific UHS:water ratios.
Article
Engineering, Environmental
Wei Li, Zeming Wang, Huiyun Liao, Xue Liu, Lixiang Zhou, Yeqing Lan, Jiguang Zhang
Summary: In this study, sulfur-doped copper-manganese bimetallic oxides were successfully fabricated and applied as a catalyst to activate peroxymonosulfate for the degradation of 2,4,6-trichlorophenol. The results showed that S-CuMnO exhibited the highest catalytic activity among all tested catalysts, attributed to its abundant Cu(I) content and increased specific surface area.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Hengwei Zhang, Xin Gao, Fei Yao, Hongyan Yue
Summary: Novel vanadium-doped nickel-chalcogenide/reduced graphene oxide cathodes and MnV2O6.2H(2)O/rGO anode were prepared through a solvothermal method. These electrode materials exhibited outstanding capacitive performance, remarkable cycling stability, and exceptional rate performance, showing potential application prospects in high energy density supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Ceramics
V. V. Deshmukh, H. P. Nagaswarupa, N. Raghavendra
Summary: Transition metal ferrites play crucial roles in modern technology, with Co-doped MnFe2O4 nanomaterials showing promising super capacitive behavior for energy storage applications. Specifically, 2 wt% Co-doped MnFe2O4 exhibits the highest capacitance among the tested samples.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Tianyu Zhao, Dongzhi Yang, Ting Xu, Ming Zhang, Shiyi Zhang, Liyuan Qin, Zhong-Zhen Yu
Summary: Graphene fiber-based supercapacitors face limitations in cold environments due to low energy density and poor cold resistance, but synthesized nitrogen/sulfur dual-doped graphene fibers show improved capacitive performance. The use of a modified gel electrolyte enables high capacitance and expanded operating temperature range. Additionally, the solar-thermal effect of graphene prevents freezing, ensuring reliability and flexibility of the supercapacitor in cold outdoor environments.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Sheng Zhu, Fei Zhang, Hai-Gang Lu, Jian Sheng, Lina Wang, Si-Dian Li, Gaoyi Han, Yan Li
Summary: A novel structured graphene, named flash nitrogen-doped graphene (FNG), has been synthesized using a solvent-and catalyst-free flash Joule heating method. FNG features high graphitization with a turbostratic structure and exhibits high surface-area-normalized capacitance and exceptional rate capability. It also demonstrates desirable cyclic stability, making it a promising candidate for high-performance supercapacitors.
ACS MATERIALS LETTERS
(2022)
Article
Materials Science, Ceramics
Lina Chen, Xiaowen Zheng, Chongyang Hao, Qidi Sun, Pengchao Si, Lijie Ci, Jun Wei
Summary: Manganese oxides are considered as one of the most promising electrode materials for energy storage systems. By intercalating K+ ions and coating the particles with a carbon layer, manganese oxides are able to achieve fast charging/discharging ability.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
U. Javed, G. Dhakal, A. M. Rabie, S. Iqbal, Y. R. Lee, J. Lee, J. -J. Shim
Summary: This study reports the synthesis of binder-free nickel-cobalt phosphide nano horns wrapped with phosphorus-doped reduced graphene oxide by a hydrothermal reaction followed by phosphorization. The prepared electrode exhibits high specific capacity and rate capability, and the asymmetric hybrid supercapacitor shows good energy density, power-density, and cycling stability.
MATERIALS TODAY NANO
(2022)
Article
Energy & Fuels
Lukai Fan, Jinghao Zhao, Fengyang Jing, Xiujuan Qin, Guangjie Shao
Summary: The construction of MnO2@NiMnxOy-delta core-shell heterostructure can enhance the rate capacity and stability of pseudocapacitor materials. The introduction of oxygen vacancies in the nanosheets can accelerate electron/ions transport, and the synergistic effect between one-dimensional nanowires and two-dimensional nanosheets can adjust the interfacial behavior of the electrode reaction, leading to superior cyclic stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Sumayya C. Pathan, Navajsharif S. Shaikh, Sawanta S. Mali, Jyoti V. Patil, Pranav K. Katkar, Navnath S. Padalkar, Supareak Praserthdam, Chang Kook Hong, Pongsakorn Kanjanaboos, Jasmin S. Shaikh
Summary: In this study, lanthanum-doped iron oxide-integrated graphene oxide (10%La-Fe2O3@GO) as an anode and beta-MnO2 as a cathode material were synthesized successfully through a simple hydrothermal method. The 10%La-Fe2O3@GO exhibited excellent electrochemical performance, attributed to the doping of rare earth La3+ metal ions, providing abundant active sites. The designed aqueous and quasi-solid state ionic liquid-based devices showed high energy density and good cyclability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Yinan Chen, Huilian Hao, Xuekun Lu, Wenyao Li, Guanjie He, Wenzhong Shen, Paul R. Shearing, Dan J. L. Brett
Summary: Heteroatom-doped carbon materials such as NS-3DPGHs, with high specific area and well-defined porous structure, have been considered as promising electrode materials for high-performance supercapacitors. NS-3DPGH-150, for example, exhibits high specific capacitance and excellent cycle stabilization, making it a potential candidate for supercapacitor applications.
Article
Biophysics
Liyang Wang, Wei Cheng, Jingjing Zhu, Wenyao Li, Danyang Li, Xi Yang, Weixin Zhao, Mingjun Ren, Jieji Ren, Xiumei Mo, Qiang Fu, Kaile Zhang
Summary: Regeneration of urethral defects has been a challenge in clinical practice. A nanoyarn scaffold delivering adipose-derived stem cells' exosomes was fabricated to address this issue. The scaffold showed good biocompatibility and promoted wound healing in experiments.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Yue Zhao, Huilian Hao, Tianliang Song, Xu Wang, Changwang Li, Wenyao Li
Summary: By synthesizing N/P co-doped graphene (NPG) through a one-step hydrothermal method, this study highlights the efficient synthesis and excellent performance of NPG cathode materials, promoting the rapid development and great application of high-performance Zn-ion hybrid capacitors.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Angkang Chen, Chonggui Li, Chaomin Zhang, Wenyao Li, Qi Yang
Summary: In this study, V2O5 microspheres were synthesized using a hydrothermal method, and V2O5/graphene composites were formed by wet ball milling. The results showed that the composites exhibited high specific capacity, excellent cycling stability, and addressed the poor cycling issues of electrode materials.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Liping Huang, Wenyao Li, Xudun Shen, Chunyan Sun, Jin Yang, Xue-rong Shi, Min Zeng
Summary: The combination of non-noble metal core and carbon shell can enhance the activity and stability of materials through interface engineering. Heteroatomic doping can regulate the band structure of graphene and improve electrocatalytic performance. Converting the phosphorus-doped metal core-shell structure to phosphorus-doped ternary alloy core can enhance the hydrogen evolution reaction (HER) performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Analytical
Yuxuan Qin, Chen Hang, Liping Huang, Haiyun Cheng, Junqing Hu, Wenyao Li, Jianghong Wu
Summary: In this study, a Sn@C composite was fabricated and used as a modifier on a glassy carbon electrode to construct an electrochemical biosensor for the detection of acetaminophen (AC). The Sn@C sensor exhibited significantly enhanced electrochemical response to AC, with a wide linear range and low detection limit. The excellent electrochemical behavior can be attributed to the conductivity of Sn and carbon, as well as the strong adsorption of the carbon layer to AC.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Chen Hang, Yuxuan Qin, Gaoqi Tian, Junqing Hu, Wenyao Li, Jianghong Wu
Summary: In this study, a novel electrochemical biosensor was developed using graphene encapsulated CoFe alloy nanocomposite as the electrode modifier for highly sensitive and simultaneous detection of ascorbic acid, dopamine, and uric acid. The results showed that the CoFe@G modifier significantly improved the differentiation of oxidative potential gap between ascorbic acid and dopamine, achieving selective detection of these biomolecules.
ADVANCED MATERIALS INTERFACES
(2022)
Review
Chemistry, Medicinal
Danyang Li, Meng Liu, Wenyao Li, Qiang Fu, Liyang Wang, Enping Lai, Weixin Zhao, Kaile Zhang
Summary: Prussian blue nanoparticles (PBNPs) have shown excellent performance in various applications, including multi-enzyme simulation activity, anti-inflammatory properties, reactive oxygen scavenging, and serving as nano-drug carriers and biological detection sensors. As therapeutic and diagnostic agents, PBNPs have made significant advances in the field of biological nanomedicine.
Article
Chemistry, Physical
Tianliang Song, Huilian Hao, Yue Zhao, Xu Wang, Changwang Li, Wenyao Li
Summary: In this study, nitrogen and sulfur co-doped graphene/polyaniline nanoarrays (NSG/PANI) were synthesized and demonstrated exceptional energy storage properties in zinc ion hybrid supercapacitors. The NSG/PANI nanocomposite exhibited high specific capacitance, high energy density, and excellent capacitance retention rate. The results highlight the potential of NSG/PANI as a high-performance electrode material for zinc-ion hybrid energy systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Urology & Nephrology
Kaile Zhang, Jiafu Liu, Liyang Wang, Wenyao Li, Er Qi, Qiang Fu
Summary: This study explores a new technique for understanding the three-dimensional anatomy of the urethra using 3D printing technology. Three patients were evaluated using various diagnostic methods including urethroscopy, urethrography, and urethral CT. The 3D printed urethral stenosis models demonstrated clear advantages in understanding the anatomical structure and relationship between the urethra, pubic symphysis, and rectum.
Article
Chemistry, Multidisciplinary
Haiyun Cheng, Caiyu Ma, Wenyao Li
Summary: LiMn2O4 (LMO) nano-cubes with a porous structure were synthesized using pre-synthesized Mn2O3 porous nano-cubes as a sacrificial template. As a cathode material for lithium-ion batteries, the porous LiMn2O4 nano-cubes effectively shorten the Li+ transport paths, leading to excellent Li+ extraction and insertion performance. The discharge specific capacity was 95.39 mA h g(-1) with a capacity retention rate of 90.91% after 500 cycles at a current density of 100 mA g(-1). This work provides a reliable synthetic route for LiMn2O4 materials and offers a potential solution for lithium manganate synthesis.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Kaile Zhang, Muhammad Aqeel Bhutto, Liyang Wang, Kai Wang, Jie Liu, Wenyao Li, Wenguo Cui, Qiang Fu
Summary: To overcome the issue of insufficient bionic performance, researchers mimicked the urethral matrix and used two electrospinning techniques to create a double-layer sponge tube comprising nanofibers and nanoyarns. Scarless urethral repair was achieved by delivering bioactive growth factors from adipose-derived stem cell exosomes through physical absorption. This design proves to be instructive for the regeneration of not only the urethra but also other tubular organs.
ADVANCED FIBER MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Caiyu Ma, Qi Zeng, Wenyao Li
Summary: Utilizing two-dimensional materials with high specific surface area and suitable pore size as electrode materials in supercapacitors is a promising strategy for energy storage and conversion. In this study, Ni(OH)2 precursors were etched with ammonia under high temperature and pressure using a hydrothermal approach, resulting in materials with suitable pore size and a large number of active sites on the edge part. The materials prepared by this synthetic method showed superior electrochemical performance as pseudocapacitor electrode materials, and also provided a new synthetic idea for commercial production.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Runze Guo, Yufeng Liu, Yongzheng Fang, Zhifu Liu, Langping Dong, Lei Wang, Wenyao Li, Jingshan Hou
Summary: In this study, CsPbI3-mesoporous SiO2 nanocomposites were synthesized using microfluidic technology to improve the chemical and thermal stability of CsPbI3 PNCs, as well as greatly enhance water resistance. The results show a significant improvement in stability and water resistance properties, making it suitable for large-scale production of stable perovskite NCs.
Review
Engineering, Electrical & Electronic
Chen Hang, Isil Akpinar, Yuxuan Qin, Liping Huang, Liyang Wang, Wenyao Li, Jianghong Wu
Summary: With its low cost and simple operation, adsorption is an effective strategy to remove organic pollutants from water. UiO-67, a stable zirconium-based MOF material, is considered a promising adsorbent with appropriate pore size and superior structure. Research shows that UiO-67 has great potential in effectively removing organic pollutants from water.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
(2021)
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)
