Article
Chemistry, Multidisciplinary
Anthony Griffin, Genwei Chen, Mark Robertson, Kun Wang, Yizhi Xiang, Zhe Qiang
Summary: Conventional ordered mesoporous carbon (OMC) production requires long processing times, but this work demonstrates accelerated synthesis of OMCs using dielectric barrier discharge plasma, achieving carbonization within 15 minutes. The use of plasma enables faster production rates and does not require additional substrates within the OMC precursor systems.
Article
Multidisciplinary Sciences
Bui Thi Hang, Trinh Tuan Anh
Summary: This study investigated the effects of raw materials on the structures and morphologies of iron particles in iron-based rechargeable batteries, showing that changing the concentration of raw materials modified the structure and morphology of the synthesized alpha -Fe2O3 particles. The shape and size of alpha -Fe2O3 can be controlled, and the morphology and shape of the iron oxide particles significantly affected their redox reaction rate and discharge capacity. Among the synthesized materials, cubic-shaped alpha -Fe2O3 exhibited the highest discharge capacity, making it a potential candidate for application in iron-based aqueous batteries.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Peigen Wang, Kaisheng Xia, Yiren Chen, Qifeng Tian, Rui Xiong, Bo Han, Qiang Gao, Chenggang Zhou, Duo Yu
Summary: Defect engineering is crucial in tuning the surface properties of carbon nitride materials, with the nitrogen-deficient mesoporous graphitic carbon nitride showing a high specific surface area and hydrogen storage density due to nitrogen-vacancy defects introduced by hydrochloric acid.
Review
Electrochemistry
Jieqiong Qin, Zhi Yang, Feifei Xing, Liangzhu Zhang, Hongtao Zhang, Zhong-Shuai Wu
Summary: Two-dimensional mesoporous materials (2DMMs) combine the merits of 2D materials and mesoporous materials, offering a promising solution for high-performance electrode/catalyst materials in energy storage and conversion devices. This review summarizes the recent advances in 2DMMs for ESCDs, including their structural advantages, chemical synthesis strategies, and applications in supercapacitors, rechargeable batteries, and electrocatalysis.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Materials Science, Ceramics
N. A. Gazouly, Ahmed E. Hannora, Hesham A. Yousef, M. A. Sayed, Atif Mossad Ali, M. M. El-Desoky
Summary: The nanostructured BFPT sample synthesized by mechanochemical method exhibits high dielectric permittivity at high temperature and recoverable energy density and energy storage efficiency at room temperature. These samples also show potential for magnetoelectric device applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Energy & Fuels
Prem Sagar Shukla, Anant Agrawal, Anurag Gaur, G. D. Varma
Summary: MnCo2O4@MoS2 (MCOS) nanocomposites synthesized through co-precipitation process exhibit significant enhancement in electrochemical characteristics, attributed to its larger specific surface area and mesoporous distribution. MCOS nanocomposite as a single electrode shows larger specific capacitances and good rate capability, as well as excellent cycling stability even at high current density. An asymmetric supercapacitor device fabricated with MCOS20 nanocomposite as cathode and commercial activated carbon as anode demonstrates the highest specific energy density and power density, along with excellent stability in KOH gel electrolyte.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Prem Sagar Shukla, Anant Agrawal, Anurag Gaur, G. D. Varma
Summary: This study investigates the effect of Zn doping on the electrochemical properties of MnCo2O4 (MCO). The results show that Zn doping significantly improves the electrode's BET surface area and mesoporous distribution, leading to enhanced electrochemical characteristics. The constructed ASC device demonstrates excellent performance in terms of energy density, power density, and cycle stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Chemical
Francisco A. De la Rosa-Priego, Eduardo D. Gutierrez-Lopez, Trino A. Zepeda, Manuel Acosta-Alejandro, Anna M. Venezia, Sergio Fuentes-Moyado, Barbara Pawelec, Jorge Noe Diaz-de-Leon
Summary: This study describes the preparation of mesoporous binary oxides using a one-step soft template sol-gel process, which were then used as catalysts in CO2 hydrogenation. The catalyst modified with 20% Fe2O3 showed the best performance in producing C2+ hydrocarbons. A higher Fe2O3 content resulted in a significant decrease in the reverse water gas shift (RWGS) reaction and a linear correlation was found between the surface exposure of Fe-0 species and the yield of C2+ hydrocarbons.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Amina Berrichi, Zahra Bailiche, Redouane Bachir
Summary: In this study, the AHA coupling reaction of amines, haloalkane and alkynes was achieved under UV visible light using Au/Fe2O3 as a catalyst. Comparative experiments under ordinary and photocatalytic conditions revealed that UV visible light could activate gold nanoparticles, leading to the formation of CH2Cl· and Cl· radicals. The propargylamine product was obtained at low temperature and short reaction time using 2% Au/Fe2O3, which showed good stability and photocatalytic activity.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Review
Chemistry, Multidisciplinary
Atif Saleem, Yuezhou Zhang, Muhammad Usman, Muhammad Haris, Peng Li
Summary: Tailored mesoporous carbon nanostructures (TMCNs) with distinctive and tunable morphologies have attracted significant interest. This review provides an authoritative reference on the synthesis pathways, applications, challenges, and future research directions of TMCNs. The control of reaction parameters and selection of appropriate synthesis methods are crucial in obtaining mesoporous carbon materials with precise architectural designs. These materials have great potential applications in energy storage and conversion, catalysis, adsorption, and biomedicine.
Review
Chemistry, Multidisciplinary
Chun Xu, Chang Lei, Yue Wang, Chengzhong Yu
Summary: Dendritic mesoporous silica nanoparticles have attracted attention due to their wide applications, but the terminology used is ambiguous. This review provides a critical analysis of reported dendritic silica nanoparticles according to their structural classification, updating the understanding of their formation mechanisms and the control of structural parameters. The review also focuses on the applications of dendritic mesoporous nanoparticles in the biomedical field, offering new insights into the structure-property relationship.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Junmei Liang, Zhou Zhou, Qicheng Zhang, Xuewen Hu, WenChao Peng, Yang Li, Fengbao Zhang, Xiaobin Fan
Summary: The Fe2O3@Ti3C2Tx composite prepared by alkali treatment exhibits extremely high reversible capacity and excellent cycle stability in high-performance lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Ruinan Li, Liu Wang, Yapeng Tian, Yunfeng Chao, Xinwei Cui, Qun Xu
Summary: A novel graphene oxide (GO)-assisted strategy is proposed for the synthesis of mesoporous VO2/G nanobelts with abundant oxygen defects, enabling high-performance Zn2+ storage. Oxygen vacancies and mesopores facilitate the insertion/extraction process of Zn2+. After in-situ electrochemical activation, monoclinic VO2 transforms into layered V2O5•nH(2)O, delivering an extremely high reversible capacity of 731 mAh/g (0.1 A/g). Additionally, superior high-rate and cycling performances are achieved.
Article
Chemistry, Multidisciplinary
Yishao Liu, Chenyu Gao, Ruxuan Zhou, Feng Hong, Guoqing Tong, Li Wang, Yang Jiang
Summary: The study develops a multicomponent hybrid material with mesoporous Fe2O3 nanospheres wrapped by heteroatom pre-intercalated Cl-terminated Ti3C2Tx MXene, which shows excellent sodium storage performance and long-cycle stability by reducing the Na ion diffusion barrier and alleviating the volume change of Fe2O3.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Qingyun Dou, Nan Yao, Wei Kong Pang, Yeonju Park, Peixun Xiong, Xiaotong Han, Harpalsinh H. Rana, Xiang Chen, Zhong-Heng Fu, Lars Thomsen, Bruce Cowie, Yingbo Kang, Qin Liu, Dong Hyun Min, Young Mee Jung, Zaiping Guo, Qiang Zhang, Ho Seok Park
Summary: This study reports the high plating/stripping time and rate capability of Zn-Al alloy anodes in Al3+-containing hybrid electrolytes. The more reversible Al deposition on Zn is attributed to weak Al3+-solvent interactions and fast Al3+ transfer kinetics in nitrile-based electrolytes.
ENERGY & ENVIRONMENTAL SCIENCE
(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)