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Zhan F, Wen G, Li R, Feng C, Liu Y, Liu Y, Zhu M, Zheng Y, Zhao Y, La P. A comprehensive review of oxygen vacancy modified photocatalysts: synthesis, characterization, and applications. Phys Chem Chem Phys 2024; 26:11182-11207. [PMID: 38567530 DOI: 10.1039/d3cp06126d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Photocatalytic technology is a novel approach that harnesses solar energy for efficient energy conversion and effective pollution abatement, representing a rapidly advancing field in recent years. The development and synthesis of high-performance semiconductor photocatalysts constitute the pivotal focal point. Oxygen vacancies, being intrinsic defects commonly found in metal oxides, are extensively present within the lattice of semiconductor photocatalytic materials exhibiting non-stoichiometric ratios. Consequently, they have garnered significant attention in the field of photocatalysis as an exceptionally effective means for modulating the performance of photocatalysts. This paper provides a comprehensive review on the concept, preparation, and characterization methods of oxygen vacancies, along with their diverse applications in nitrogen fixation, solar water splitting, CO2 photoreduction, pollutant degradation, and biomedicine. Currently, remarkable progress has been made in the synthesis of high-performance oxygen vacancy photocatalysts and the regulation of their catalytic performance. In the future, it will be imperative to develop more advanced in situ characterization techniques, conduct further investigations into the regulation and stabilization of oxygen vacancies in photocatalysts, and comprehensively comprehend the mechanism underlying the influence of oxygen vacancies on photocatalysis. The engineering of oxygen vacancies will assume a pivotal role in the realm of semiconductor photocatalysis.
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Affiliation(s)
- Faqi Zhan
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Guochang Wen
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Ruixin Li
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Chenchen Feng
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Yisi Liu
- Institute of Advanced Materials, Hubei Normal University, Huangshi, 415000, China
| | - Yang Liu
- School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Min Zhu
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Yuehong Zheng
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Yanchun Zhao
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Peiqing La
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
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Chen X, Chen B, Li D, Li L, Xu D, Shi W. Flame doping of indium ions into TiO 2 nanorod arrays for enhanced photochemical water oxidation. Dalton Trans 2023; 52:14747-14751. [PMID: 37814527 DOI: 10.1039/d3dt02120c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Indium (In) ions were diffused into a TiO2 (In-TiO2) photoelectrode via a facile and efficient flame doping method resulting in improved photo-induced carrier separation. The dopant concentration was systematically investigated, and a volcano-type relationship between the dopant concentration and photoelectrochemical (PEC) performance was observed. The optimum incident photon-to-current efficiency and photocurrent density of In-TiO2 were 38.6% and 0.70 mA cm-2 at 1.23 V, respectively, 2.1 and 11.2 times the values of pristine TiO2, respectively. In doping resulted in improved charge separation and lower surface adsorption energies for reactant molecules, as evidenced by experimental and computational methods.
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Affiliation(s)
- Xue Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
| | - Biyi Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
| | - Dan Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
| | - Longhua Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
| | - Dongbo Xu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang city 212013, P. R. China.
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Li L, Zhu Q, Han M, Tu X, Shen Y. MOF-derived single-atom catalysts for oxygen electrocatalysis in metal-air batteries. NANOSCALE 2023; 15:13487-13497. [PMID: 37563956 DOI: 10.1039/d3nr02548a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Electrocatalysts play a critical role in oxygen electrocatalysis, enabling great improvements for the future development and application of metal-air batteries. Single-atom catalysts (SACs) derived from metal-organic frameworks (MOFs) are promising catalysts for oxygen electrocatalysis since they are endowed with the merits of a distinctive electronic structure, a low-coordination environment, quantum size effect, and strong metal-support interaction. In addition, MOFs afford a desirable molecular platform for ensuring the synthesis of well-dispersed SACs, endowing them with remarkably high catalytic activity and durability. In this review, we focus on the current status of MOF-derived SACs used as catalysts for oxygen electrocatalysis, with special attention to MOF-derived strategies for the fabrication of SACs and their application in various metal-air batteries. Finally, to facilitate the future deployment of high-performing SACs, some technical challenges and the corresponding research directions are also proposed.
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Affiliation(s)
- Le Li
- Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, Jiangsu Province, China.
| | - Qianyi Zhu
- Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, Jiangsu Province, China.
| | - Meijun Han
- Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, Jiangsu Province, China.
| | - Xiaobin Tu
- Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, Jiangsu Province, China.
| | - Ying Shen
- Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, Jiangsu Province, China.
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Xu Y, Yan B, Lai C, Wang M, Cao Y, Tu J, Chen D, Liu Y, Wu Q. High-performance Vo-ZnO/ZnS benefiting nanoarchitectonics from the synergism between defect engineering and surface engineering for photoelectrochemical glucose sensors. RSC Adv 2023; 13:19782-19788. [PMID: 37396832 PMCID: PMC10312125 DOI: 10.1039/d3ra02869k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 06/19/2023] [Indexed: 07/04/2023] Open
Abstract
In this study, a ZnO/ZnS nanocluster heterojunction photoelectrode rich in surface oxygen defects (Vo-ZnO/ZnS) was prepared by applying a simple in situ anion substitution and nitrogen atmosphere annealing method. The synergism between defect and surface engineering significantly improved the photocatalysts. Given this synergism, Vo-ZnO/ZnS was endowed with a long carrier lifetime, narrow band gap, high carrier density, and high performance toward electron transfer under light conditions. Thus, Vo-ZnO/ZnS had three times the photocurrent density of ZnO under light illumination. To further evaluate its advantages in the field of photoelectric bioassay, Vo-ZnO/ZnS was applied as the photocathode of photoelectric sensor system for glucose detection. Vo-ZnO/ZnS showed excellent performance in glucose detection in various aspects, including a low detection limit, high detection sensitivity, and a wide detection range.
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Affiliation(s)
- Yongtao Xu
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Bingdong Yan
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Caiyan Lai
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Mingyu Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Yang Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Jinchun Tu
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Delun Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University Haikou 570228 P. R. China
| | - Youbin Liu
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University Haikou 570311 P. R. China
| | - Qiang Wu
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University Haikou 570311 P. R. China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University Haikou 571199 P. R. China
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Li J, Zhang L, Zhu F, Song Y, Yu K, Zhao Y. Rapid qualitative detection of titanium dioxide adulteration in persimmon icing using portable Raman spectrometer and Machine learning. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 290:122221. [PMID: 36549243 DOI: 10.1016/j.saa.2022.122221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Persimmon icing is the white crystalline powder that adheres to the surface of persimmon cakes when the sugar in the persimmon spills over during processing, which is considered the essence of persimmon. Titanium dioxide is a food additive that is commonly added to the surface of persimmon cakes to impersonate high-quality persimmon cakes. However, excessive titanium dioxide can be harmful to humans, so a quick method is needed to identify persimmon cakes as adulterated. Raman spectroscopy with distinctive advantages of water-insensitivity, real-time, field-deployable, label-free, and fingerprinting-identification has been rapidly developed and used in food quality assurance and safety monitoring. In this study, we investigated Raman spectroscopy integrated with machine learning to assess titanium dioxide adulteration in dried persimmon icing. The adaptive iterative reweighting partial least squares (air-PLS) algorithm as an effective algorithm was used to remove fluorescent background signals in raw Raman spectroscopy. Principal components analysis (PCA) was employed to analyze the spectral data and determine the class memberships, and results showed that 99.9% of information could be explained by PC-1 and PC-2. Compared with extreme learning machine (ELM), support vector machine (SVM), back propagation artificial neural network (BP-ANN), and random forest (RF) models, one-dimensional stack auto encoder convolutional neural network (1D-SAE-CNN) could provide the highest detection accuracy of 0.9825, precision of 0.9824, recall of 0.9825, and f1-score of 0.9824. This study shows that Raman spectroscopy coupled with 1D-SAE-CNN is a promising method to detect titanium dioxide adulteration in persimmon icing.
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Affiliation(s)
- Junmeng Li
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Liang Zhang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fengle Zhu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yuling Song
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi 712100, China; Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service, Yangling, Shaanxi 712100, China
| | - Keqiang Yu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi 712100, China; Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service, Yangling, Shaanxi 712100, China
| | - Yanru Zhao
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi 712100, China; Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service, Yangling, Shaanxi 712100, China.
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Zhang S, Lu Y, Ding Q, Yu Y, Huo P, Shi W, Xu D. MOF derived NiO thin film formed p-n heterojunction with BiVO4 photoelectrode for enhancement of PEC performance. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hu Y, Hu Q, Zhong Q, Guan H, Hao L, Wang Y, Zhang W, Du H, Tian W. Improved Charge Separation and Injection Efficiencies of Bismuth Vanadate Photoanode by Depositing Composite CoO
x
/CuO Cocatalyst. ChemistrySelect 2022. [DOI: 10.1002/slct.202202057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yingfei Hu
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Qingyuan Hu
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Qian Zhong
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Hangmin Guan
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Lingyun Hao
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Yuanyuan Wang
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Wenyan Zhang
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Hongxiu Du
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
| | - Wenjie Tian
- School of Materials Engineering Jinling Institute of Technology 99 Hongjing Avenue Nanjing 211169 P. R. China
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Liu F, Tao K, Peiqi D, Shi J. Photoelectrochemical oxygen evolution with interdigitated array electrodes: the example of TiO 2. NANOTECHNOLOGY 2022; 33:325701. [PMID: 35504248 DOI: 10.1088/1361-6528/ac6c33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
The catalytic reactions of photoelectrochemical water splitting attracts tremendous attention as a promising strategy for clean energy production. And the research on reaction mechanism is particularly important in design and developing new catalysts. In this work, the special electrochemical tool of interdigitated array (IDA) electrodes was utilized in investigating the photoelectrochemical oxygen evolution reaction process and detecting the reaction productin situwith the generation-collection mode. TiO2was taken as a model catalyst and was decorated onto the IDA generator electrode through an electrophoresis method, so that the photoelectrochemical water splitting can take place on the IDA generator and the reaction product can be detected directly with the IDA collector in real time. It is found that TiO2can be successfully decorated onto the surface of IDA electrode with the expected photoelectrochemical activity, and the generation-collection mode reveals and distinguishes the production of O2from the overall photoelectrochemical current on TiO2generator. The mass transfer process of O2from the TiO2generator to the collector could be observed as well. Large overall current at high potential range indicates the possible increasing production of the byproducts or nonfaradaic current.
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Affiliation(s)
- Fei Liu
- School of Advanced Materials and Nanotechnology, Interdisciplinary Research Center of Smart Sensing, Xidian University, Xi'an, Shaanxi, 710126, People's Republic of China
| | - Keyu Tao
- School of Advanced Materials and Nanotechnology, Interdisciplinary Research Center of Smart Sensing, Xidian University, Xi'an, Shaanxi, 710126, People's Republic of China
| | - Du Peiqi
- School of Advanced Materials and Nanotechnology, Interdisciplinary Research Center of Smart Sensing, Xidian University, Xi'an, Shaanxi, 710126, People's Republic of China
| | - Jinwen Shi
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an, Shaanxi 710049, People's Republic of China
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Bai H, Wang F, You Z, Sun D, Cui J, Fan W. Fabrication of Zn-MOF decorated BiVO4 photoanode for water splitting. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128412] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Zhang Q, Ma Q, Guo J, Li H, Wang Y, Wang X. Surface oxygen vacancies modified ridge-like CeO2/ZnO nanobelts for enhancing photocatalytic activity. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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In-situ generated NiCo 2O 4/CoP polyhedron with rich oxygen vacancies interpenetrating by P-doped carbon nanotubes for high performance supercapacitors. J Colloid Interface Sci 2022; 608:2246-2256. [PMID: 34758919 DOI: 10.1016/j.jcis.2021.10.099] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/08/2021] [Accepted: 10/17/2021] [Indexed: 11/23/2022]
Abstract
Supercapacitor with high storage capacity and small volumes are the development trends of miniaturization and portable energy storage systems. Herein, we design a novel self-supporting P-doped carbon nanotube (P-CNT) intercalating NiCo2O4/CoP core-shell polyhedron film. P-CNT is an ideal substrate with high electrical conductivity and interconnected porous architecture, which can enable the electrons transport to an external circuit from the electroactive component. NiCo2O4/CoP core-shell fluffy polyhedrons are derived from metal-organic frameworks with rich oxygen vacancies and abundant characteristics of pseudocapacitance, as well as better wettability. The self-supporting composite film readily achieves an ultra-high gravimetric and volumetric capacitance of 1918.4 F g-1 and 1074.3 F cm-3 at 1 A g-1. Accordingly, as-assembled hybrid supercapacitors using two binder-free electrodes, i.e., a self-supporting composite film as the positive electrode and P-doped CNT integrating graphene film as the negative electrode, harvest a remarkable gravimetric/volumetric energy density of 68.6 W h kg-1 (41.8 W h L-1) at 800 W kg-1 (488 W L-1). Our work suggests that the rational-designed NiCo2O4/CoP@P-CNTs electrode is a competitive candidate for designing next-generation supercapacitors with high volumetric energy density.
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Wang F, Ding Q, Bai Y, Bai H, Wang S, Fan W. Fabrication of an amorphous metal oxide/p-BiVO4 photocathode: understanding the role of entropy for reducing nitrate to ammonia. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01472b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Entropy regulation makes an amorphous metal oxide/p-BiVO4 heterostructure a desirable catalyst for the NO3− reduction reaction in a photoelectrochemical system.
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Affiliation(s)
- Fengfeng Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Qijia Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Yajie Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Song Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, 441053, PR China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
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