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Tendencies of alloyed engineering in BiOX-based photocatalysts:a state-of-the-art review

Rare Metals 2024年第4期43卷 1488-1512页

作者： Yan-Dong Sun Chao Zeng Xue Zhang Zi-Qi Zhang Bo Yang Sheng-Qi Guo Tianjin Key Laboratory of Clean Energy and Pollutant Control School of Energy and Environmental EngineeringHebei University of TechnologyTianjin300401China State-Province Joint Engineering Laboratory of Zeolite Membrane Materials Institute of Advanced MaterialsCollege of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation School of Physics and Electronic InformationAnhui Province Industrial Generic Technology Research Center for Alumics MaterialsHuaibei Normal UniversityHuaibei235000China

Energy-saving and environmentally friendly photocatalysis has emerged as a popular research area in response to issues with energy scarcity and environmental *** to the unique layer-like structure,BiOX(Cl,Br,I)is frequently used in ***,inherent flaws in BiOX,such as an inappropriate band gap and low carrier separation efficiency,restrict its capacity for *** to the tunable grouping layer,alloying engineering is employed to optimize the intrinsic properties of BiOX and alloyed BiOX becomes a promising photocatalytic *** review describes the structure of BiOX,where tunable halogen layers provide favorable conditions for the implementation of alloying engineering to improve intrinsic *** article compares the effects and mechanisms of alloying engineering on the optimization of the energy band structure and carrier behavior of BiOX,and lists various modification methods used to improve the optimization of the intrinsic properties by alloying engineering,including defect engineering,morphology control as well as the synergy between alloying and other modification methods(bismuth-rich strategies,cation doping,construction of heterojunctions and plasma resonance effects).Subsequently,applications of alloyed BiOX in energy and environmental fields are summarized,including contaminant degradation,antibacterial,CO_(2)reduction,nitrogen fixation and organic ***,we summarize the current challenges and future directions of alloyed *** is expected that this work will provide guidance and assistance for an in-depth study and understanding of the mechanisms of alloying engineering to optimize intrinsic properties and design alloyed BiOX with higher photocatalytic activity.

关键词： bismuth oxyhalide Photocatalytic Alloyed engineering Microstructural regulation Application

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Regulating Built-in Polar States via Atomic Self-Hybridization for Fast Ion Diffusion Kinetics in Potassium Ion Batteries

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Chinese Journal of Chemistry 2024年第21期42卷 2589-2598页

作者： Hongwei Du Xiaoyun Zhou Tao Li Wen Zhao Dan Zhou Dawei Yang Tianli Wu Ying Xu Henan Key Laboratory of Quantum Materials and Quantum Energy School of Future TechnologyHenan UniversityKaifengHenan475004 China School of Materials and Energy Lanzhou UniversityLanzhouGansu730000 China Department of Materials Science and Engineering University of ConnecticutStorrsConnecticut06269 United States

Potassium ion batteries(PIBs)are of great interest owing to the low cost and abundance of potassium resources,while the sluggish diffusion kinetics of K^(+)in the electrode materials severely impede their practical ***,self-hybridized BiOCl_(0.5)Br_(0.5) with a floral structure is assembled and used as anode for *** on the systematic theoretical calculation and experimental analysis,the unbalance of charge distribution between Cl and Br atoms leads to an enhanced built-in electric field and a larger interlayer spacing,which can enhance the K^(+)***,the K^(+)insertion causes the energetic evolution of polar states in the BiOCl_(0.5)Br_(0.5) crystal framework,where the dynamic correlation between the K^(+)and the halogen atoms leads to the formation of hole-like polarons,which significantly improves the K^(+)diffusion and reaction kinetics during the charging/discharging process,giving important implications to design the electrode materials with high electrochemical performance by engineering the interaction between electronic structure and ***,the BiOCl_(0.5)Br_(0.5) anode obtains an excellent performance of 171 mAh·g^(-1) at 1 A·g^(-1) over 2000 cycles in PIBs.

关键词： bismuth oxyhalide Self-hybridized structure Potassium-ion battery Polar states Density functional theory

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Space-confined microwave synthesis of ternary-layered BiOCl crystals with high-performance ultraviolet photodetection

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InfoMat 2020年第3期2卷 593-600页

作者： Lixing Kang Xuechao Yu Xiaoxu Zhao Qingling Ouyang Jun Di Manzhang Xu Dan Tian Weiliang Gan Calvin CIAng Shoucong Ning Qundong Fu Jiadong Zhou R.G.Kutty Ya Deng Pin Song Qingsheng Zeng Stephen J.Pennycook Jun Shen Ken-T.Yong Zheng Liu School of Materials Science and Engineering Nanyang Technological UniversitySingapore CINTRA CNRS/NTU/THALES Singapore Centre for OptoElectronics and Biophotonics School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore Department of Materials Science and Engineering National University of SingaporeSingapore Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqingChina

In recent years,two-dimensional(2D)ternary materials have attracted wide attention due to their novel properties which can be achieved by regulating their chemical composition with a very great degree of freedom and adjustable ***,as for the precise synthesis of 2D ternary materials,great challenges still lie ahead that hinder their further *** this work,we demonstrated a simple and reliable approach to synthesize 2D ternary-layered BiOCl crystals through a microwave-assisted space-confined process in a short time(<3 minutes).Their ultraviolet(UV)detection performance was analyzed *** photodetectors based on the as-obtained BiOCl platelets demonstrate high sensitivity to 266-nm laser *** responsivity is calculated to be8 A/W and the response time is up to be18 *** the other hand,the device is quite stable after being exposed in the ambient air within 3 weeks and the response is almost unchanged during the *** facile and fast synthesis of single crystalline BiOCl platelets and its high sensitivity to UV light irradiation indicate the potential optoelectronic applications of 2D BiOCl photodetectors.

关键词： 2D materials bismuth oxyhalide microwave synthesis UV photodetector

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