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Efficient Photocatalytic Degradation Towards Tetracycline Triggered by Z-Scheme Znsno3/Agi Composites: The Synergistic Effect of Oxygen Vacancies, Lewis Acid Sites, and Interfacial Chemical Bonds

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SSRN 2024年

作者： Sun, Jing Chang, Ting Liu, Qian Wang, Zhuoyue Huo, Xiaoqi Li, Meifeng Wang, Yafeng Zhao, Zhilei Zhao, Xin Wang, TingXin Liu, Jue National&Local Joint Engineering Research Center of Metrology Instrument and System College of Quality and Technical Supervision Hebei University Baoding071002 China Department of Chemical and Materials Engineering University of Alberta EdmontonT6G2R3 Canada Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science & Engineering Kunming University of Science &Technology Kunming650500 China

Chemically bonded Z-scheme ZnSnO3/AgI composites rich in oxygen vacancies (OVs) and Lewis acid sites were prepared successfully and showed excellent photocatalytic activities. Especially, ZnAg-2 degraded 96.1% tetracycline under visible light irradiation for 15 min. OVs contributed to Lewis acid sites production and interfacial chemical bonds formation through weakening the metal-O bonding. Lewis acid sites favored the adsorption of electron-rich tetracycline. Interfacial chemical bonds together with Z-scheme structure accelerated electron transfer and retained the high redox ability of ZnSnO3 and AgI. OVs contributed to singlet oxygen (1O2) production through facilitating the energy transfer from triplet exciton to O2. ZnSnO3/AgI composites realized efficient removal towards tetracycline after five consecutive cycles utilization as well as in different environmental conditions and water matrices, showing practical application potential. Based on ROSs generation and photoreduction experiment, the photocatalytic mechanism of the ZnAg composites was proposed. Possible degradation pathway was deduced according to the detected main degradation intermediates. The biological toxicity in solution was reduced after tetracycline degradation. This work highlights the significant roles of OVs, Lewis acid sites, and chemical bonding in improving the photocatalytic activity of Z-scheme composites and provides new insight into designing high efficient photocatalysts for visible light induced organic pollutants removal. © 2024, The Authors. All rights reserved.

关键词： Zinc compounds

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HI hydrolysis-derived intermediate as booster for CsPbI3 perovskite: from crystal structure, film fabrication to device performance

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Journal of Semiconductors 2020年第5期41卷 15-25页

作者： Zhizai Li Zhiwen Jin School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials(MoE)&Key Laboratory of Special Function Materials and Structure Design(MoE)&National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology Lanzhou UniversityLanzhou 730000China

Nowadays,inorganic CsPbI3 perovskite solar cells(PSCs)have become one of the most attractive research hotspots in photovoltaic field for its superior chemical stability and excellent photo-electronic *** the first independent report in 2015,the power conversion efficiency(PCE)of CsPbI3 based PSCs has sharply increased from 3.9%to 19.03%.Importantly,during the developing process of CsPbI3 PSCs,HI hydrolysis-derived intermediate plays an important role:from stabilizing the crystal structure,optimizing the fabricated film to boosting the device *** this review,the different crystal and electronic structures of CsPbI3 are *** then trace the history and disputes of HI hydrolysis-derived intermediate to make this review more ***,we highlight the functions of HI hydrolysis-derived intermediate,and systematically summarize the advanced works on CsPbI3 ***,the bottlenecks and prospects are revealed to further increase the CsPbI3 PSCs performance.

关键词： CsPbI3 HI intermediate crystal structure stability

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Site preference and the optical thermometry strategy by different temperature response from two sites environment of Mn2+ in K7ZnSc2B15O30

Site preference and the optical thermometry strategy by diff...

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中国稀土学会2021学术年会

作者： Ying Fu Chao Li Feng Zhang Shixiang Huang Zhangyue Wu Yuhua Wang Zhengzheng Zhang Key Lab of Photovoltaic Materials of Henan Province Henan University National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology Lanzhou University

A novel optical thermometry strategy based on different temperature response from two sites environment of Mnin KZnScBO:Mnhad been *** color tunable Mndoped KZnScBO luminescence materials were successfully prepared,and the photoluminescence properties were *** density functional theory,the electronic structure was *** calculated result showed that KZnScBO was a direct-band gap material with the energy gap of 4.22 *** the excitation of UV light,the photoluminescence spectra of KZnScBO:Mnphosphors demonstrated two emission bands centered at 584 nm and 675 nm attributed to the substitution of Znand Scsites with *** on the concentration of Mn,the emitting color can be tunable from yellow to red in the Mndoped single-phase *** temperature-dependent luminescence properties of KZnScBO:Mnwas anlysized range from 300 to 520 *** results indicated that the thermal quenching properties of Mnat the two kinds of lattice sites are *** Mnoccupied the position of Sc,the luminescence intensity decreased significantly with the increasing of temperature,on the contrary,when Mnoccupied the position of Zn,the luminescence intensity decreased slightly with the rise of *** situation caused a significant change in the fluorescence intensity ratio of the two emission *** study showed that the typical phosphor had a high relative and absolute sensitivity respectively with maximum value of 1.84%K and 0.0311 K at 520 K,and the temperature resolution is about 0.8 *** results indicated that the single Mndoped KZnScBO materials showed a potential application for optical thermometry.

关键词： site preference photoluminescence properties multiband emission temperature response optical thermometry

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Double-Layered Microcracks Coupled Strain Sensors with High Sensitivity and Wide Working Range

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SSRN 2024年

作者： Wang, Zihao Liang, Cuiyuan Yang, Yuanhe Sun, Jiaxue Zhang, Xuelin Wang, Yu Jiang, Ying Liu, Yan Qi, Dianpeng MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage National and Local Joint Engineering Laboratory for Synthesis Transformation and Separation of Extreme Environmental Nutrients School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Key Laboratory of Science and Engineering for the Multi-modal Prevention and Control of Major Chronic Diseases Ministry of Industry and Information Technology Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou450000 China School of Astronautics Harbin Institute of Technology Harbin150001 China Department of Electromechanical Engineering Centre for Artificial Intelligence and Robotics University of Macau 999078 China

The flexible strain sensor is a crucial component of the wearable technology, offering considerable potential for monitoring physiological signals. Notably, strain sensors based on nanomaterial thin films have gained much attention from researchers due to their excellent performance and ease of preparation. Nevertheless, challenges remain, such as the rapid expansion of cracks in rigid conductive films under strain, which greatly reduces the working range of the sensors. Conversely, soft conductive films characterized by small cracks are much less sensitive. This study introduces a novel conductive strategy centered on the double-layered microcracks of gold/PPy (Polypyrrole) composite films. The as-prepared strain sensor exhibits ultra-high sensitivity with a gauge factor (GF) of approximately 3.604 × 107, an expansive working range spanning from 0% to 60%, high strain resolution at 0.1% and commendable cycling stability exceeding 1000 cycles. The crack formation and sensing mechanisms were thoroughly investigated, elucidating the key role of the double-layered microcracks in enhancing sensing performance. Ultimately, the practicality of the developed sensor for human health monitoring and human-computer interaction was demonstrated by the accurate detection of human motion. © 2024, The Authors. All rights reserved.

关键词： Thin films

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Sodium-based dual-ion batteries via coupling high-capacity selenium/graphene anode with high-voltage graphite cathode

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Chinese Chemical Letters 2020年第9期31卷 2314-2318页

作者： Xiankun Hou Wenhao Li Yingying Wang Shaofang Li Yunfeng Meng Haiyue Yu Baokuan Chen Xinglong Wu National&Local United Engineering Lab for Power Battery Department of ChemistryNortheast Normal UniversityChangchun 130024China Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024China College of Chemistry Chemical Engineering and Environmental EngineeringLiaoning Shihua UniversityFushun 113001China

Dual ion batteries(DIBs) exhibit broad application prospects in the field of electrical energy storage(EES)devices with excellent properties,such as high voltage,high energy density,and low *** the graphitebased DIBs,high voltage is needed to store enough anions with the formation of anion intercalation compound XCn(X=AlCl4-,PF6-,TFSI-,etc.).Hence,it is difficult for graphite-based DIBs to match proper anodes and ***,an Se/graphene composite is prepared via a convenient method,and assembled into a dual-ion full battery(DIFB) as anode with graphite cathode and 1 mol/L NaPF6 in EC:EMC(1:1,v:v).This DIFB has achieved a high discharge capacity of 75.9 mAh/g and high medium output voltage of 3.5 V at 0.1 A/***,the suitable anode materials,such as the present Se/graphene composite,are extremely important for the development and application of graphite-based *** study is enlightening for the design of future low-cost EES devices including graphite-based DIBs.

关键词： Dual ion batteries High-capacity anode Se/grapheme High-voltage cathode Graphite

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Rgo–Encapsulated Co/Ni Dual–Doped Fef3·0.33h2o Nanoparticles Enabling a High-Rate and Long-Life Iron (Iii) Fluoride–Lithium Battery

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SSRN 2022年

作者： Liu, Min Chen, Biaobing Wu, Tianjing Li, Hui Liu, Xiaolin Wang, Gang Chen, Manfang Yang, Zhenhua Bai, Yansong Wang, Xianyou National Base for International Science & Technology Cooperation National-Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion School of Chemistry Xiangtan University Xiangtan411105 China School of Materials Science and Engineering Xiangtan University Xiangtan411105 China

conversion-type iron fluoride promises a high energy density and redox potential, which is considered an extremely promising candidate for next-generation high-specific-energy and low-cost Li-ion battery. Unfortunately, its commercialization is plagued by the poor rate capability and fast capacity degradation resulting from its inferior electronic conductivity and large volumetric expansion. Herein, a three-dimensional sandwich architecture of rGO-encapsulated Ni/Co dual‐doped FeF3·0.33H2O nanoparticles (NC-FF) is fabricated by co-precipitation and subsequent calcination. The results show that the flower-like Ni/Co dual‐doped FeF3·0.33H2O nanoparticles are firmly encapsulated within highly conductive rGO sheets through M-O-C bonding interaction, which constructs a robust electronic/ionic network and a buffer layer against the severe volume variation. The Ni-doping can facilitate to the capacity improvement by expanding the cell volume, and the Co-doping can promote the rate capability and cycling stability enhancement by accelerating Li+ migration. Benefiting from the synergies of Ni/Co dual-doping and encapsulation of rGO, the NC-FF exhibits a high-rate capability of 200.1 mAh g–1 at 5.0 C and good cycle stability of 177.8 mAh g–1 after 400 cycles. Moreover, the NC-FF|Graphite symmetric-cell still shows a high reversible capacity of 396.2 mAh g–1 at 1.0 C and good cycle stability of 247.5 mAh g–1 after 100 cycles. © 2022, The Authors. All rights reserved.

关键词： Fluorine compounds

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Enhanced performance of CdS/CdSe quantum dotsensitized solar cells by long-persistence phosphors structural layer

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Science China materials 2020年第4期63卷 516-523页

作者： Yunlong Deng Shuqi Lu Zhiyuan Xu Jiachi Zhang Fei Ma Shanglong Peng National 8c Local Joint Engineering Laboratory for Optical Conversion Materials and Technology School of Physical Science and TechnologyLanzhou UniversityLanzhou 730000China

light absorption plays an important role in improving the power conversion efficiency(PCE)of quantum dot-sensitized solar cells(QDSSCs).In this study,a multifunctional long-persistence phosphor(LPP)layer was introduced into the CdS/CdSe QDSSCs via a simple doctor blade *** LPP layer can simultaneously improve the light harvesting and photo charge transfer in CdS/CdSe *** a result,their short-circuit current and corresponding PCE are effectively *** PCE can reach up to 5.07%,which is about 24%larger than that of the conventional CdS/CdSe QDSSCs without LPP *** solar cells can work in dark for a while due to the long-lasting fluorescence of the LPP *** research provides an effective way to improve the PCE of QDSSCs,and finds the possibility for all-weather QDSSCs.

关键词： quantum dot-sensitized solar cells all-weather solar cells long-persistence phosphors power conversion efficiency

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Interfacial molecular anchor for ambient all-bladed perovskite solar modules

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Joule 2025年第5期9卷

作者： Zhu, Xuejie Yu, Dongqi Zhou, Xin Wang, Nan Liu, Hong Liang, Zihui Wu, Congcong Wang, Kai Jin, Dayong Liu, Shengzhong Yang, Dong State Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Dalian116023 China School of Physics and Electronic Technology Liaoning Normal University Dalian116029 China Interdisciplinary Research Center for Biology and Chemistry Liaoning Normal University Liaoning Dalian116029 China Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan430062 China National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430073 China Huanjiang Laboratory Zhejiang University Zhuji311800 China School of Mathematical and Physical Sciences Faculty of Science University of Technology Sydney SydneyNSW Australia Eastern Institute for Advanced Study Eastern Institute of Technology Ningbo China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China

Ambient blade coating of perovskite solar modules shows great potential for large-scale manufacture and commercialization. However, blade coating nanometer-thick buffer layers typically results in a nonuniform surface due to particle instability and aggregation, often leading to insufficient integration and destabilization of the crystallographic lattice in the overlying perovskite layer. Herein, we introduce a layer of "molecular glue" that can effectively anchor the solute that suspends the monodisperse SnO2 nanoparticles into a uniform thin film and adhere it to the top perovskite during the mechanical blading process. Leveraging this holistic nanoparticle-anchoring strategy, we have achieved a seamlessly bonded cathode heterojunction, resulting in a record efficiency of 26.11% for small cells and the highest efficiency so far of 22.76% (certified at 21.60%) for mini-modules. Importantly, these ambiently all-blade-coated devices exhibit an extended lifetime of approximately 1,500 h, as verified by ISOS-O testing, indicating great promise for commercialization. © 2025

关键词： Perovskite

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Highly Compressive Aerogel-Elastomer Hybrid Porous Material with Redistributed Strain for High-Sensitive Soft Pressure Sensors

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SSRN 2024年

作者： Liu, Yan Zhong, Zhengxiang Liang, Cuiyuan Wang, Fanyu Xu, Hongbo Wan, Ye Ma, Xinzhi Tian, Gongwei Qi, Dianpeng MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage National and Local Joint Engineering Laboratory for Synthesis Transformation and Separation of Extreme Environmental Nutrients School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Key Laboratory of Science and Engineering for the Multi-modal Prevention and Control of Major Chronic Diseases Ministry of Industry and Information Technology Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou450000 China China Silicon Coporation Ltd. China ENFI Engineering Coporation Ltd Luoyang471003 China Key Experiment of Optoelectronic Bandgap Materials Ministry of Education Harbin Normal University Harbin150500 China

Owing to the good sensitivity and simple fabrication process, flexible piezoresistive pressure sensors based on aerogels shows great applications in soft robotics, bioelectronics and so on. However, the poor compressibility and stability of the aerogel is still challenging the development of aerogel based flexible piezoresistive pressure sensors, simultaneously, it is urgent to pave a way to enhance the sensitivity of these sensors. Here, for the first time, we propose a universal strategy to prepare aerogel skeleton-elastomer shell hybrid porous material with enhanced compressibility for high-sensitive and stable flexible pressure sensors. We found that the elastomer shell disperses the strain in the aerogel skeleton and enhances the compressibility of the aerogel, which improve the stability of the sensor (10000 cycles of compression). More importantly, there are elastomer micro-blocks formed in the hybrid material, these micro-blocks redistribute the strain in the material which contributes to the high sensitivity (10.25 kPa-1) of the sensors. Furthermore, the sensors are successful in monitoring both of the large joint bending and subtle skin vibration, as well as remote controlling toy car and artificial hand. This work provides an effective and universal strategy to enhance the sensitivity and stability of the aerogel based flexible pressure sensors and promotes their development towards practical applications. © 2024, The Authors. All rights reserved.

关键词： Aerogels

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CsPbBr_(3)quantum dots/PDVT-10 conjugated polymer hybrid film-based photonic synaptic transistors toward high-efficiency neuromorphic computing

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Science China materials 2022年第11期65卷 3077-3086页

作者： Congyong Wang Qisheng Sun Gang Peng Yujie Yan Xipeng Yu Enlong Li Rengjian Yu Changsong Gao Xiaotao Zhang Shuming Duan Huipeng Chen Jishan Wu Wenping Hu Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350100China School of Materials Science and Engineering Xiamen University of TechnologyXiamen 361024China

Photonic synaptic transistors are promising neuromorphic computing systems that are expected to circumvent the intrinsic limitations of von Neumann-based *** design and construction of photonic synaptic transistors with a facile fabrication process and highefficiency information processing ability are highly desired,while it remains a tremendous ***,a new approach based on spin coating of a blend of CsPbBr_(3) perovskite quantum dot(QD)and PDVT-10 conjugated polymer is reported for the fabrication of photonic synaptic *** combination of flat surface,outstanding optical absorption,and remarkable charge transporting performance contributes to high-efficiency photon-to-electron conversion for such perovskite-based ***-performance photonic synaptic transistors are thus fabricated with essential synaptic functionalities,including excitatory postsynaptic current(EPSC),paired-pulse facilitation(PPF),and long-term *** utilizing the photonic potentiation and electrical depression features,perovskite-based photonic synaptic transistors are also explored for neuromorphic computing simulations,showing high pattern recognition accuracy of up to 89.98%,which is one of the best values reported so far for synaptic transistors used in pattern *** work provides an effective and convenient pathway for fabricating perovskite-based neuromorphic systems with high pattern recognition accuracy.

关键词： CsPbBr_(3)quantum dots photonic synaptic transistor synaptic functionalities neuromorphic computing pattern recognition accuracy

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