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Wu M, Sun W, Meng X, Kang J, Yang Y. Natural marmatite photocatalyst for treatment of mineral processing wastewater to help zero wastewater discharge. J Environ Sci (China) 2024; 142:83-91. [PMID: 38527898 DOI: 10.1016/j.jes.2023.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/04/2023] [Accepted: 07/04/2023] [Indexed: 03/27/2024]
Abstract
Mineral processing wastewater (MPW) with large discharge and high toxicity affects environmental safety, and the realizing zero discharge of MPW is of great significance for reducing environmental pollution, saving water resources, and promoting the sustainable development of the mining industry. In this study, we reported natural marmatite (NM) as a low-cost and efficient photocatalyst for the treatment of MPW to help zero wastewater discharge. The photocatalytic activity of NM was evaluated by the removal of total organic carbon (TOC) from MPW under visible-light illumination, and the optimal degradation conditions were discussed. Results showed that superoxide free radicals (·O2-) were the dominant active species responsible for organic pollutants degradation, and 74.25% TOC removal was obtained after 120 min reaction under the optimum treatment conditions. Meanwhile, the wastewater treated by NM photocatalysis can be reused in the flotation system without adverse impact on the product index. Based on these findings, a model of zero wastewater discharge for flotation with the help of photocatalytic treatment was established, it indicated that the water of the whole system can be balanced without affecting the ore dressing index, which showed that visible light-driven photocatalyst has a promising application prospect in the treatment and recycling of industrial wastewater.
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Affiliation(s)
- Meirong Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Xiangsong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Jianhua Kang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Yue Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China.
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2
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Duan Y, Wang Y, Zhang W, Ban C, Feng Y, Tao X, Li A, Wang K, Zhang X, Han X, Fan W, Zhang B, Zou H, Gan L, Han G, Zhou X. Large-Scale Synthesis of High-Loading Single Metallic Atom Catalysts by a Metal Coordination Route. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2404900. [PMID: 38857942 DOI: 10.1002/adma.202404900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 06/01/2024] [Indexed: 06/12/2024]
Abstract
Single atom catalyst (SAC) is one of the most efficient and versatile catalysts with well-defined active sites. However, its facile and large-scale preparation, the prerequisite of industrial applications, has been very challenging. This dilemma originates from the Gibbs-Thomson effect, which renders it rather difficult to achieve high single atom loading (< 3 mol%). Further, most synthesizing procedures are quite complex, resulting in significant mass loss and thus low yields. Herein, a novel metal coordination route is developed to address these issues simultaneously, which is realized owing to the rapid complexation between ligands (e.g., biuret) and metal ions in aqueous solutions and subsequent in situ polymerization of the formed complexes to yield SACs. The whole preparation process involves only one heating step operated in air without any special protecting atmospheres, showing general applicability for diverse transition metals. Take Cu SAC for an example, a record yield of up to 3.565 kg in one pot and an ultrahigh metal loading 16.03 mol% on carbon nitride (Cu/CN) are approached. The as-prepared SACs are demonstrated to possess high activity, outstanding selectivity, and robust cyclicity for CO2 photoreduction to HCOOH. This research explores a robust route toward cost-effective, massive production of SACs for potential industrial applications.
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Affiliation(s)
- Youyu Duan
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing, 401135, China
| | - Yang Wang
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
| | - Weixuan Zhang
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
| | - Chaogang Ban
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
| | - Yajie Feng
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
| | - Xiaoping Tao
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
| | - Ang Li
- Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100024, China
| | - Kaiwen Wang
- Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100024, China
| | - Xu Zhang
- Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100024, China
| | - Xiaodong Han
- Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100024, China
| | - Wenjun Fan
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Bin Zhang
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Hanjun Zou
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Liyong Gan
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing, 401135, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
| | - Guang Han
- College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China
| | - Xiaoyuan Zhou
- College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China
- Chongqing Institute of New Energy Storage Materials and Equipment, Chongqing, 401135, China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
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3
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Li H, Li R, Liu G, Zhai M, Yu J. Noble-Metal-Free Single- and Dual-Atom Catalysts for Artificial Photosynthesis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2301307. [PMID: 37178457 DOI: 10.1002/adma.202301307] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/08/2023] [Indexed: 05/15/2023]
Abstract
Artificial photosynthesis enables direct solar-to-chemical energy conversion aimed at mitigating environmental pollution and producing solar fuels and chemicals in a green and sustainable approach, and efficient, robust, and low-cost photocatalysts are the heart of artificial photosynthesis systems. As an emerging new class of cocatalytic materials, single-atom catalysts (SACs) and dual-atom catalysts (DACs) have received a great deal of current attention due to their maximal atom utilization and unique photocatalytic properties, whereas noble-metal-free ones impart abundance, availability, and cost-effectiveness allowing for scalable implementation. This review outlines the fundamental principles and synthetic methods of SACs and DACs and summarizes the most recent advances in SACs (Co, Fe, Cu, Ni, Bi, Al, Sn, Er, La, Ba, etc.) and DACs (CuNi, FeCo, InCu, KNa, CoCo, CuCu, etc.) based on non-noble metals, confined on an arsenal of organic or inorganic substrates (polymeric carbon nitride, metal oxides, metal sulfides, metal-organic frameworks, carbon, etc.) acting as versatile scaffolds in solar-light-driven photocatalytic reactions, including hydrogen evolution, carbon dioxide reduction, methane conversion, organic synthesis, nitrogen fixation, hydrogen peroxide production, and environmental remediation. The review concludes with the challenges, opportunities, and future prospects of noble-metal-free SACs and DACs for artificial photosynthesis.
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Affiliation(s)
- Huaxing Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Rongjie Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Gang Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Maolin Zhai
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, The Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
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4
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Feng R, Fu S, Liu H, Wang Y, Liu S, Wang K, Chen B, Zhang X, Hu L, Chen Q, Cai T, Han X, Wang C. Single-Atom Site SERS Chip for Rapid, Ultrasensitive, and Reproducible Direct-Monitoring of RNA Binding. Adv Healthc Mater 2024; 13:e2301146. [PMID: 38176000 DOI: 10.1002/adhm.202301146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 12/11/2023] [Indexed: 01/06/2024]
Abstract
Ribonucleic acids (RNA) play active roles within cells or viruses by catalyzing biological reactions, controlling gene expression, and communicating responses to cellular signals. Rapid monitoring RNA variation has become extremely important for appropriate clinical decisions and frontier biological research. However, the most widely used method for RNA detection, nucleic acid amplification, is restricted by a mandatory temperature cycling period of ≈1 h required to reach target detection criteria. Herein, a direct detection approach via single-atom site integrated surface-enhanced Raman scattering (SERS) monitoring nucleic acid pairing reaction, can be completed within 3 min and reaches high sensitivity and extreme reproducibility for COVID-19 and two other influenza viruses' detection. The mechanism is that a single-atom site on SERS chip, enabled by positioning a single-atom oxide coordinated with a specific complementary RNA probe on chip nanostructure hotspots, can effectively bind target RNA analytes to enrich them at designed sites so that the binding reaction can be detected through Raman signal variation. This ultrafast, sensitive, and reproducible single-atom site SERS chip approach paves the route for an alternative technique of immediate RNA detection. Moreover, single-atom site SERS is a novel surface enrichment strategy for SERS active sites for other analytes at ultralow concentrations.
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Affiliation(s)
- Ran Feng
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo No. 2 Hospital, Ningbo, 315012, China
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Shaohua Fu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, China
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | | | - Ying Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Simiao Liu
- Thorgene Co., Ltd, Beijing, 100176, China
| | - Kaiwen Wang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Binbin Chen
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Xiaoxian Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, China
| | - Liming Hu
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Qian Chen
- Thorgene Co., Ltd, Beijing, 100176, China
| | - Ting Cai
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo No. 2 Hospital, Ningbo, 315012, China
| | - Xiaodong Han
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Cong Wang
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo No. 2 Hospital, Ningbo, 315012, China
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
- Thorgene Co., Ltd, Beijing, 100176, China
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5
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Selvakumar K, Oh TH, Wang Y, Sadhasivam T, Sadhasivam S, Swaminathan M. Sonication strategy for anchoring single metal atom oxides (W, Cu, Co) on CeO 2-rGO for boosting electrocatalytic oxygen evolution reaction. CHEMOSPHERE 2023; 341:140012. [PMID: 37652243 DOI: 10.1016/j.chemosphere.2023.140012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/26/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
In the field of electrocatalysis, single-atomic-layer tungsten, copper, and cobalt oxide on CeO2, ethylene diamine (ED) and reduced graphene oxide (rGO) supported materials shows tremendous potential. Despite the enormous interest in single metal atom oxide (SMAO) catalysts, it is still very difficult to directly convert readily available bulk metal oxide into single atom oxide. It is crucial and tough to create high performance materials for the oxygen evolution reaction (OER) in an alkaline environment. Herein, a single tungsten, copper and cobalt atom oxide (SMAO) anchored on the CeO2 atomic layer and overall components deposited on the rGO (rGO-ED-CeO2-WCuCo) is prepared through a one-pot sonication technique. The presence of SMAO is identified by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging. The electrocatalytic performance of final rGO-ED-CeO2-WCuCo-30 nanocomposite for the OER in 1 M KOH electrolyte is evidenced by providing low overpotential of 283 mV at 10 mA cm-2. The Tafel slope for OER using rGO-ED-CeO2-WCuCo-30 electrocatalysts is 57.03 mV dec-1. The electrocatalytic activity of rGO-ED-CeO2-WCuCo-30 nanocomposites for OER was noticeably increased when compared to bare CeO2 nanorods (401 mV), rGO-ED-CeO2-WCo-30 (345 mV), rGO-ED-CeO2-WCu-30 (340 mV) and rGO-ED-CeO2-WCuCo-20 (321 mV) samples.
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Affiliation(s)
- Karuppaiah Selvakumar
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Yueshuai Wang
- Institute of Microstructure and Properties of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China.
| | - Thangarasu Sadhasivam
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Subramani Sadhasivam
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Meenakshisundaram Swaminathan
- Nanomaterials Laboratory, Department of Chemistry, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India
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6
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Li CF, Pan WG, Zhang ZR, Wu T, Guo RT. Recent Progress of Single-Atom Photocatalysts Applied in Energy Conversion and Environmental Protection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300460. [PMID: 36855324 DOI: 10.1002/smll.202300460] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/13/2023] [Indexed: 06/02/2023]
Abstract
Photocatalysis driven by solar energy is a feasible strategy to alleviate energy crises and environmental problems. In recent years, significant progress has been made in developing advanced photocatalysts for efficient solar-to-chemical energy conversion. Single-atom catalysts have the advantages of highly dispersed active sites, maximum atomic utilization, unique coordination environment, and electronic structure, which have become a research hotspot in heterogeneous photocatalysis. This paper introduces the potential supports, preparation, and characterization methods of single-atom photocatalysts in detail. Subsequently, the fascinating effects of single-atom photocatalysts on three critical steps of photocatalysis (the absorption of incident light to produce electron-hole pairs, carrier separation and migration, and interface reactions) are analyzed. At the same time, the applications of single-atom photocatalysts in energy conversion and environmental protection (CO2 reduction, water splitting, N2 fixation, organic macromolecule reforming, air pollutant removal, and water pollutant degradation) are systematically summarized. Finally, the opportunities and challenges of single-atom catalysts in heterogeneous photocatalysis are discussed. It is hoped that this work can provide insights into the design, synthesis, and application of single-atom photocatalysts and promote the development of high-performance photocatalytic systems.
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Affiliation(s)
- Chu-Fan Li
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Wei-Guo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai, 200090, P. R. China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation in Machinery Industry, Shanghai, 200090, P. R. China
| | - Zhen-Rui Zhang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Tong Wu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Rui-Tang Guo
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai, 200090, P. R. China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation in Machinery Industry, Shanghai, 200090, P. R. China
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7
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Guo J, Liu H, Li Y, Li D, He D. Recent advances on catalysts for photocatalytic selective hydrogenation of nitrobenzene to aniline. Front Chem 2023; 11:1162183. [PMID: 36970401 PMCID: PMC10036363 DOI: 10.3389/fchem.2023.1162183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/27/2023] [Indexed: 03/12/2023] Open
Abstract
Selective hydrogenation of nitrobenzene (SHN) is an important approach to synthesize aniline, an essential intermediate with extremely high research significance and value in the fields of textiles, pharmaceuticals and dyes. SHN reaction requires high temperature and high hydrogen pressure via the conventional thermal-driven catalytic process. On the contrary, photocatalysis provides an avenue to achieve high nitrobenzene conversion and high selectivity towards aniline at room temperature and low hydrogen pressure, which is in line with the sustainable development strategies. Designing efficient photocatalysts is a crucial step in SHN. Up to now, several photocatalysts have been explored for photocatalytic SHN, such as TiO2, CdS, Cu/graphene and Eosin Y. In this review, we divide the photocatalysts into three categories based on the characteristics of the light harvesting units, including semiconductors, plasmonic metal-based catalysts and dyes. The recent progress of the three categories of photocatalysts is summarized, the challenges and opportunities are pointed out and the future development prospects are described. It aims to give a clear picture to the catalysis community and stimulate more efforts in this research area.
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Affiliation(s)
- Jiawen Guo
- School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, China
| | - Huimin Liu
- School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, China
| | - Yuqiao Li
- School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, China
| | - Dezheng Li
- School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, China
| | - Dehua He
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, China
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8
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Su N, Bai Y, Shi Z, Li J, Xu Y, Li D, Li B, Ye L, He Y. ReS 2 Cocatalyst Improves the Hydrogen Production Performance of the CdS/ZnS Photocatalyst. ACS OMEGA 2023; 8:6059-6066. [PMID: 36816678 PMCID: PMC9933464 DOI: 10.1021/acsomega.2c08110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Photocatalysis provides an exciting solution to the current growing energy challenge. However, the activity and stability of photocatalysts are two important issues in photocatalytic applications. In this work, we have successfully developed an efficient and stable photocatalyst by loading ReS2 nanoparticles onto a CdS/ZnS heterojunction. After loading ReS2, there is a strong interaction between the CdS/ZnS heterojunction and ReS2, which accelerates the photogenerated charge migration and effectively inhibits the recombination of photogenerated electrons and holes. Accordingly, CdS/ZnS-ReS2 displays excellent photocatalytic activity and stability with the highest hydrogen production rate of 10 722 μmol g-1 h-1, which is approximately 178 times higher than that of the pure CdS and 5 times better than that of CdS/ZnS. This work not only facilitates solar energy conversion to improve photocatalytic activity and stability but also broadens the application of ReS2 as a cocatalyst.
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Affiliation(s)
- Na Su
- School
of New Energy and Materials, Southwest Petroleum
University, Chengdu 610500, China
| | - Yang Bai
- School
of New Energy and Materials, Southwest Petroleum
University, Chengdu 610500, China
- State
Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,
School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Zhonglian Shi
- College
of Materials and Chemical Engineering, Key Laboratory of Inorganic
Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China
| | - Jiale Li
- College
of Materials and Chemical Engineering, Key Laboratory of Inorganic
Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China
| | - Yixue Xu
- College
of Materials and Chemical Engineering, Key Laboratory of Inorganic
Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China
| | - Daoxiong Li
- State
Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,
School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Baolu Li
- School
of New Energy and Materials, Southwest Petroleum
University, Chengdu 610500, China
| | - Liqun Ye
- College
of Materials and Chemical Engineering, Key Laboratory of Inorganic
Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China
| | - Yi He
- School
of Chemistry and Chemical Engineering, Southwest
Petroleum University, Chengdu 610500, China
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9
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Wang J, Jin D, Mei H, Lin Q, Zhang R, Wang X. In Situ Construction of BiO(ClBr) (1-x)/2I x-n Solid Solution with Appropriate Surface Iodine Vacancies for Synergistically Boosting Visible-Light Photo-Oxidation Capability. Inorg Chem 2023; 62:1539-1548. [PMID: 36642893 DOI: 10.1021/acs.inorgchem.2c03744] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A proposed BiO(ClBr)(1-x)/2Ix-n solid solution containing abundant iodine vacancies has been constructed through a facile solvothermal treatment strategy. Fascinatingly, the iodine-vacancy BiO(ClBr)(1-x)/2Ix-n solid solution exhibits an outstanding visible-light photocatalytic degradation property for the environmentally hazardous pollutants of methyl orange, tetracycline, and phenol solutions, which is credited to the synergistic effect of iodine vacancies and the solid solution. By manipulating the molar ratios of Cl, Br, and I, the band structure of the solid solution attained is controlled, enabling the samples to maximize the harvest of visible light and to possess strong oxidation features. More importantly, the construction of iodine vacancies is bound to modulate the local surface atomic structure and promotes the efficiency of the separation of photogenerated carriers. Given these, the microstructure and physicochemical and photoelectrochemical properties of the photocatalysts are fully characterized in a series. In addition, the iodine-vacancy BiO(ClBr)(1-x)/2Ix-n solid solution has a stable crystal structure that permits favorable recyclability even after multiple cycles of degradation. This study sheds light on the significance of the simultaneous existence of vacancy and the solid solution for the enhanced performance of photocatalysts and opens up new insights for sustainable solar-chemical energy conversion.
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Affiliation(s)
- Jintao Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, 999# Xuefu Road, Nanchang330031, China
| | - Dai Jin
- School of Future Technology, Nanchang University, 999# Xuefu Road, Nanchang330031, China
| | - Hao Mei
- School of Future Technology, Nanchang University, 999# Xuefu Road, Nanchang330031, China
| | - Qingzhuo Lin
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, 999# Xuefu Road, Nanchang330031, China
| | - Rongbin Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, 999# Xuefu Road, Nanchang330031, China
| | - Xuewen Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, 999# Xuefu Road, Nanchang330031, China
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10
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Selvakumar K, Oh TH, Wang Y, Prasanna AM, Arunpandian M, Sadhasivam T, Sami P, Swaminathan M. Rational design of single tungsten/cobalt atom oxide anchored on the TiO2-rGO: A highly efficient electrocatalyst for water splitting and photocatalyst for decomposition of pharmaceutical pollutant. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Zhou P, Luo M, Guo S. Optimizing the semiconductor–metal-single-atom interaction for photocatalytic reactivity. Nat Rev Chem 2022; 6:823-838. [PMID: 37118099 DOI: 10.1038/s41570-022-00434-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2022] [Indexed: 11/09/2022]
Abstract
Metal single-atom (MSA) catalysts with 100% metal atom utilization and unique electronic properties are attractive cocatalysts for efficient photocatalysis when coupled with semiconductors. Owing to the absence of a metal-metal bond, MSA sites are exclusively coordinated with the semiconductor photocatalyst, featuring a chemical-bond-driven tunable interaction between the semiconductor and the metal single atom. This semiconductor-MSA interaction is a platform that can facilitate the separation/transfer of photogenerated charge carriers and promote the subsequent catalytic reactions. In this Review, we first introduce the fundamental physicochemistry related to the semiconductor-MSA interaction. We highlight the ligand effect on the electronic structures, catalytic properties and functional mechanisms of the MSA cocatalyst through the semiconductor-MSA interaction. Then, we categorize the state-of-the-art experimental and theoretical strategies for the construction of the efficient semiconductor-MSA interaction at the atomic scale for a wide range of photocatalytic reactions. The examples described include photocatalytic water splitting, CO2 reduction and organic synthesis. We end by outlining strategies on how to further advance the semiconductor-MSA interaction for complex photocatalytic reactions involving multiple elementary steps. We provide atomic and electronic-scale insights into the working mechanisms of the semiconductor-MSA interaction and guidance for the design of high-performance semiconductor-MSA interface photocatalytic systems.
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Chang B, Wu S, Wang Y, Sun T, Cheng Z. Emerging single-atom iron catalysts for advanced catalytic systems. NANOSCALE HORIZONS 2022; 7:1340-1387. [PMID: 36097878 DOI: 10.1039/d2nh00362g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Due to the elusive structure-function relationship, traditional nanocatalysts always yield limited catalytic activity and selectivity, making them practically difficult to replace natural enzymes in wide industrial and biomedical applications. Accordingly, single-atom catalysts (SACs), defined as catalysts containing atomically dispersed active sites on a support material, strikingly show the highest atomic utilization and drastically boosted catalytic performances to functionally mimic or even outperform natural enzymes. The molecular characteristics of SACs (e.g., unique metal-support interactions and precisely located metal sites), especially single-atom iron catalysts (Fe-SACs) that have a similar catalytic structure to the catalytically active center of metalloprotease, enable the accurate identification of active centers in catalytic reactions, which afford ample opportunity for unraveling the structure-function relationship of Fe-SACs. In this review, we present an overview of the recent advances of support materials for anchoring an atomic dispersion of Fe. Subsequently, we highlight the structural designability of support materials as two sides of the same coin. Moreover, the applications described herein illustrate the utility of Fe-SACs in a broad scope of industrially and biologically important reactions. Finally, we present an outlook of the major challenges and opportunities remaining for the successful combination of single Fe atoms and catalysts.
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Affiliation(s)
- Baisong Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Shaolong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Yang Wang
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology, Taicang 215411, P. R. China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Zhen Cheng
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China.
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Wang Y, Fan G, Wang S, Li Y, Guo Y, Luan D, Gu X, Lou XWD. Implanting CoO x Clusters on Ordered Macroporous ZnO Nanoreactors for Efficient CO 2 Photoreduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2204865. [PMID: 36048463 DOI: 10.1002/adma.202204865] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Despite suffering from slow charge-carrier mobility, photocatalysis is still an attractive and promising technology toward producing green fuels from solar energy. An effective approach is to design and fabricate advanced architectural materials as photocatalysts to enhance the performance of semiconductor-based photocatalytic systems. Herein, metal-organic-framework-derived hierarchically ordered porous nitrogen and carbon co-doped ZnO (N-C-ZnO) structures are developed as nanoreactors with decorated CoOx nanoclusters for CO2 -to-CO conversion driven by visible light. Introduction of hierarchical nanoarchitectures with highly ordered interconnected meso-macroporous channels shows beneficial properties for photocatalytic reduction reactions, including enhanced mobility of charge carriers throughout the highly accessible framework, maximized exposure of active sites, and inhibited recombination of photoinduced charge carriers. Density functional theory calculations further reveal the key role of CoOx nanoclusters with high affinity to CO2 molecules, and the CoO bonds formed on the surface of the composite exhibit stronger charge redistribution. As a result, the obtained CoOx /N-C-ZnO demonstrates enhanced photocatalysis performance in terms of high CO yield and long-term stability.
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Affiliation(s)
- Yan Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Guilan Fan
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Sibo Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, P. R. China
| | - Yunxiang Li
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yan Guo
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Deyan Luan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Xiaojun Gu
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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Facile synthesis of VS2/CdS/NaYF4: Yb, Er ternary heterojunctions for the visible-near-infrared-light driven photocatalysis. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Lv WJ, Gan L, Yuan XG, Zheng Y, Huang Y, Zheng L, Yao HR. Understanding the Aging Mechanism of Na-Based Layered Oxide Cathodes with Different Stacking Structures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33410-33418. [PMID: 35849722 DOI: 10.1021/acsami.2c09295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Manganese-based layered oxides are one of the most promising cathodes for Na-ion batteries, but the prospect of their practical application is challenged by high sensitivity to ambient air. The stacking structure of materials is critical to the aging mechanism between layered oxides and air, but there remains a lack of systematic study. Herein, comprehensive research on model materials P-type Na0.50MnO2 and O-type Na0.85MnO2 reveals that the O-phase displays a much higher dynamic affinity toward moisture air compared to P-type compounds. For air-exposed O-type material, Na+ ions are extracted from the crystal lattice to form alkaline species at the surface in contact with air, accompanying by the increase of the valence state of transition metals. The series of undesired reactions result in an increase of interfacial resistance and huge capacity loss. Comparatively, the insertion of H2O into the Na layer is the main reaction during air-exposure of P-type material, and the inserted H2O can be extracted by high-temperature treatment. The H2O de/insertion process not only causes no performance degradation but also can enlarge the interlayer distance. With these understandings, we further propose a washing-resintering strategy to recover the performance of aged O-type materials and an aging strategy to build high-performance P-type materials.
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Affiliation(s)
- Wei-Jun Lv
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
| | - Lu Gan
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
| | - Xin-Guang Yuan
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China
| | - Yongping Zheng
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China
| | - Yiyin Huang
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China
| | - Lituo Zheng
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China
| | - Hu-Rong Yao
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China
- 21C Innovation Laboratory, Contemporary Amperex Technology Ltd. (CATL), Ningde 352100, China
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Ren Y, Cai J, Cheung H, Shao H, Au K, Chow T, Wen W, Ling L, Chen S. Controlling microbial activity on walls by a photocatalytic nanocomposite paint: A field study. Am J Infect Control 2022; 50:427-434. [PMID: 34536501 DOI: 10.1016/j.ajic.2021.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/02/2021] [Accepted: 09/08/2021] [Indexed: 11/01/2022]
Abstract
BACKGROUND Bacteria and fungi that grow on the walls can cause allergic reactions and infectious diseases in human. We proposed a low-cost and easy-to-operate testing protocol for large scale field studies to evaluate the long-term antimicrobial performance of a novel WOx paint in 2 primary schools. METHODS In Tun Mun and Tin Shui Wai schools, WOx paints were painted on semi-outdoor and indoor walls and daily chlorine disinfection was applied after class in TSW School. A guidance was proposed for the protocol using the ATP biofluorescence method for large-scale field studies. ATP swab samples were taken at locations with and without the WOx paint on a control basis with a sampling frequency once a week for three months. The ATP values were then processed and presented in box plots. RESULTS In both schools, the median log-scale ATP values of walls with WOx paint were at least 0.5-log lower than those without WOx paint. The WOx paint also performed better than daily chlorine disinfection in reducing microbial activities in long-term. CONCLUSIONS The proposed testing protocol is suitable to evaluate long-term performance of an antimicrobial paint by analyzing its microbial activity in large-scale field tests. The WOx paint shows long-term effectiveness in reducing microbial activities on wall surfaces in both indoor and semi-outdoor environments.
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Feng R, Miao Q, Zhang X, Cui P, Wang C, Feng Y, Gan L, Fu J, Wang S, Dai Z, Hu L, Luo Y, Sun W, Zhang X, Xiao J, Wu J, Zhou B, Zou M, He D, Zhou X, Han X. Single-atom sites on perovskite chips for record-high sensitivity and quantification in SERS. SCIENCE CHINA MATERIALS 2022; 65:1601-1614. [PMID: 35281622 PMCID: PMC8902489 DOI: 10.1007/s40843-022-1968-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
UNLABELLED Surface enhanced Raman scattering (SERS) is a rapid and nondestructive technique that is capable of detecting and identifying chemical or biological compounds. Sensitive SERS quantification is vital for practical applications, particularly for portable detection of biomolecules such as amino acids and nucleotides. However, few approaches can achieve sensitive and quantitative Raman detection of these most fundamental components in biology. Herein, a noble-metal-free single-atom site on a chip strategy was applied to modify single tungsten atom oxide on a lead halide perovskite, which provides sensitive SERS quantification for various analytes, including rhodamine, tyrosine and cytosine. The single-atom site on a chip can enable quantitative linear SERS responses of rhodamine (10-6-1 mmol L-1), tyrosine (0.06-1 mmol L-1) and cytosine (0.2-45 mmol L-1), respectively, which all achieve record-high enhancement factors among plasmonic-free semiconductors. The experimental test and theoretical simulation both reveal that the enhanced mechanism can be ascribed to the controllable single-atom site, which can not only trap photoinduced electrons from the perovskite substrate but also enhance the highly efficient and quantitative charge transfer to analytes. Furthermore, the label-free strategy of single-atom sites on a chip can be applied in a portable Raman platform to obtain a sensitivity similar to that on a benchtop instrument, which can be readily extended to various biomolecules for low-cost, widely demanded and more precise point-of-care testing or in-vitro detection. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material is available for this article at 10.1007/s40843-022-1968-5 and is accessible for authorized users.
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Affiliation(s)
- Ran Feng
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China
| | - Qing Miao
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044 China
| | - Xiang Zhang
- College of Physics and Center for Quantum Materials and Devices, Analytical and Testing Center, Chongqing University, Chongqing, 401331 China
| | - Peixin Cui
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008 China
| | - Cong Wang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China
| | - Yibo Feng
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China
| | - Liyong Gan
- College of Physics and Center for Quantum Materials and Devices, Analytical and Testing Center, Chongqing University, Chongqing, 401331 China
| | - Jiaxing Fu
- Materials Genome Institute, Shanghai University, Shanghai, 200444 China
| | - Shibo Wang
- College of Materials science and Engineering, Huaqiao University, Xiamen, 361021 China
| | - Ziyi Dai
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078 China
| | - Liming Hu
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Oncology, Beijing University of Technology, Beijing, 100124 China
| | - Yunjing Luo
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Oncology, Beijing University of Technology, Beijing, 100124 China
| | - Weihai Sun
- College of Materials science and Engineering, Huaqiao University, Xiamen, 361021 China
| | - Xiaoxian Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044 China
| | - Jiawen Xiao
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China
| | - Jinbo Wu
- Materials Genome Institute, Shanghai University, Shanghai, 200444 China
| | - Bingpu Zhou
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078 China
| | - Mingqiang Zou
- Chinese Academy of Inspection and Quarantine (CAIQ), Beijing, 100123 China
| | - Dawei He
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044 China
| | - Xiaoyuan Zhou
- College of Physics and Center for Quantum Materials and Devices, Analytical and Testing Center, Chongqing University, Chongqing, 401331 China
| | - Xiaodong Han
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China
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Qiang C, Li N, Zuo S, Guo Z, Zhan W, Li Z, Ma J. Microwave-assisted synthesis of RuTe2/black TiO2 photocatalyst for enhanced diclofenac degradation: Performance, mechanistic investigation and intermediates analysis. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120214] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Pan H, Wang X, Xiong Z, Sun M, Murugananthan M, Zhang Y. Enhanced photocatalytic CO 2 reduction with defective TiO 2 nanotubes modified by single-atom binary metal components. ENVIRONMENTAL RESEARCH 2021; 198:111176. [PMID: 33933489 DOI: 10.1016/j.envres.2021.111176] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/06/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
A binary component catalyst consists of single atoms (SAs- Pt and Au) anchored on self-doped TiO2 nanotubes (TNTs), was developed for photocatalytic CO2 reduction. The defects introduced TNTs substrate was stabilized with atomic Pt and Au via strong metal support interactions (MSI), due to which, the covalent interactions facilitated an effective transfer of photo-generated electrons from the defective sites to the SAs, and in turn an enhanced separation of electron-hole pairs and charge-carrier transmission. The Pt-Au/R-TNTs with 0.33 wt% of SA metals, exhibited a maximum of 149 times higher photocatalytic performance than unmodified R-TNT and a total apparent quantum yield (AQY) of 17.9%, in which the yield of CH4 and C2H6 reached to 360.0 and 28.8 μmol g-1 h-1, respectively. The metals loading shifted the oxidation path of H2O from •OH generation into O2 evolution, that inhibited the self-oxidization of the photocatalyst.
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Affiliation(s)
- Honghui Pan
- Environmental Science Research Institute, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Xiaoguang Wang
- Environmental Science Research Institute, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Zhiwei Xiong
- Environmental Science Research Institute, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Minghui Sun
- Environmental Science Research Institute, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Muthu Murugananthan
- Department of Chemistry, PSG College of Technology, Peelamedu, Coimbatore, 641004, India
| | - Yanrong Zhang
- Environmental Science Research Institute, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
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20
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Sun D, Mao J, Wang Z, Li H, Zhang L, Zhang W, Zhang Q, Li P. Inhibition of Aspergillus flavus growth and aflatoxins production on peanuts over α-Fe 2O 3 nanorods under sunlight irradiation. Int J Food Microbiol 2021; 353:109296. [PMID: 34147839 DOI: 10.1016/j.ijfoodmicro.2021.109296] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 05/19/2021] [Accepted: 06/05/2021] [Indexed: 11/29/2022]
Abstract
Peanut is an important resource of edible oil and digestible protein in daily life, which is rich in the nutriments and antioxidants such as vitamins, minerals and polyphenols. However, peanut is susceptible to the contamination of Aspergillus flavus (A. flavus), which can produce highly carcinogenic toxins that brings serious threats to human health and food safety. Exploring green and effective methods to control A. flavus is meaningful. Herein, a green and economical way to control A. flavus on peanuts was demonstrated. It was found that the growth of A. flavus hyphae and germination of its spores could be inhibited in the presence of α-Fe2O3 nanorods under sunlight irradiation according to the agar diffusion method, flat colony counting method and fluorescence-based live/dead test. The diameter of inhibition zone was 22.3 ± 0.2 mm and the inhibition rate of spores germination was about 60 ± 5%, when the concentration of α-Fe2O3 was 10 mg/mL for 7 h sunlight irradiation. Most important, α-Fe2O3 showed the photocatalytic inhibition of A. flavus on peanuts under sunlight irradiation with the inhibition rate of about 90 ± 5%, and the production of aflatoxin B1 and aflatoxin B2 were reduced by 90 ± 2% and 70 ± 3%, respectively. By comparing the fat contents, protein contents, acid value, peroxide value and antioxidative compositions of peanuts, it was found that there was no obvious effect on the quality of peanuts after inhibition treatment. The findings provide a green, safe and economical strategy to control A. flavus on peanuts, which may be as a promising way to be used in food and agro-food preservation.
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Affiliation(s)
- Di Sun
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Jin Mao
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
| | - Zhijian Wang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Hui Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Liangxiao Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Wen Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Qi Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Peiwu Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
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Abstract
This review aims to give a general overview of the recent use of tungsten-based catalysts for wide environmental applications, with first some useful background information about tungsten oxides. Tungsten oxide materials exhibit suitable behaviors for surface reactions and catalysis such as acidic properties (mainly Brønsted sites), redox and adsorption properties (due to the presence of oxygen vacancies) and a photostimulation response under visible light (2.6–2.8 eV bandgap). Depending on the operating condition of the catalytic process, each of these behaviors is tunable by controlling structure and morphology (e.g., nanoplates, nanosheets, nanorods, nanowires, nanomesh, microflowers, hollow nanospheres) and/or interactions with other compounds such as conductors (carbon), semiconductors or other oxides (e.g., TiO2) and precious metals. WOx particles can be also dispersed on high specific surface area supports. Based on these behaviors, WO3-based catalysts were developed for numerous environmental applications. This review is divided into five main parts: structure of tungsten-based catalysts, acidity of supported tungsten oxide catalysts, WO3 catalysts for DeNOx applications, total oxidation of volatile organic compounds in gas phase and gas sensors and pollutant remediation in liquid phase (photocatalysis).
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22
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Shao L, Yang Z, Li S, Xia X, Liu Y. Molten-salt growth of Bi5FeTi3O15-based composite to dramatically boost photocatalytic performance. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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23
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Zhang C, Zhou F, Zhan S, Song Y, Wang F, Lai J. The enhanced photocatalytic inactivation of marine microorganisms over ZnO supported Ag quantum dots by the synthesis of H 2O 2. ENVIRONMENTAL RESEARCH 2021; 197:111129. [PMID: 33839116 DOI: 10.1016/j.envres.2021.111129] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/28/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
The production of hydroxyl radicals has been demonstrated to improve the antifouling of marine through a photocatalytic strategy. However, only relying on the valence band of the photocatalyst to generate hydroxyl radicals is inefficient and limits the application of photocatalytic technology in the field of marine-antifouling coatings. Herein, we reported a new strategy in which Ag quantum dots are used to synthesize hydrogen peroxide (H2O2) by photocatalysis in seawater. The decomposition of the generated H2O2 to hydroxyl radicals improves the antifouling ability. Interestingly, the prominent size effect of Ag quantum dots is closely related to the yield of H2O2. We synthesized Ag quantum dots supported on ZnO and found that Ag quantum dots approximately 4 nm in size have the highest activity for H2O2 generation and undergo a 1 h photocatalytic reaction in which the concentration of H2O2 can reach 124 μg/mL. The efficiency of ZnO in inactivating marine microorganisms increased from 72.3% to 99.4% in seawater. The synthesis of H2O2 through photocatalysis based on the medium of seawater can expand the application of photocatalytic technology in the field of marine antifouling.
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Affiliation(s)
- Chenglin Zhang
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China
| | - Feng Zhou
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China.
| | - Su Zhan
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China
| | - Yupeng Song
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China
| | - Fengguang Wang
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China
| | - Jianfu Lai
- Key Laboratory of Ship-Machinery Maintenance and Manufacture for Ministry of Transport, Dalian Maritime University, Dalian, 116026, PR China
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Feng Y, Wang H, Lin G, Cui P, Li H, Sun Z, Wang K, Zhang X, Gao Y, Huang X, Zhu K, Pan D, Mao S, Li W, Zhou B, Wang C. Single Tungsten Atom-Modified Cotton Fabrics for Visible-Light-Driven Photocatalytic Degradation and Antibacterial Activity. ACS APPLIED BIO MATERIALS 2021; 4:4345-4353. [PMID: 35006846 DOI: 10.1021/acsabm.1c00124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Various single-atom materials exhibit distinguished performances in catalysis and biology. To boost their applications, single-atom-based strategies are highly demanded to exhibit repeatable functions on advanced wearable substrates. However, single-atom approaches are rarely reported to anchor on wearable materials, i.e., widely applied cotton fabrics. Here, we developed a simple method of loading uniformly dispersed single tungsten atoms on cotton via ordinary direct-dye processing to exhibit superior sustainable functions. The single sites of tungsten atom centers are constructed by binding oxygen-coordinated single tungsten atom on the cotton fabric surface via -COOH groups. Consequently, the band gap of single sites decreases significantly to 2.75 from 3.03 eV. Therefore, the single-site-modified cotton exhibits excellent visible-light-driven (>420 nm) photocatalytic degradation efficiency of organic dyes, which exceeds other reported cotton-based materials by nearly two orders of magnitude. Furthermore, the single-site-modified cotton also exhibits great antibacterial performance due to reactive oxygen species. Moreover, the cotton with anchored single sites possesses great washing-resistance ability during 20 laundry cycles under soap-washing conditions. After recycling, the single sites on cotton have no obvious changes in the microstructure, which demonstrates the success of our sustainable strategy of single sites anchored on cotton. The single-site technique can be extended to many other elemental atoms on various wearable devices, providing a playground for functional material communities.
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Affiliation(s)
- Yibo Feng
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Hua Wang
- Department of Laboratory Medicine of Renji Hospital of School of Medicine, Shanghai Jiaotong University, Shanghai 200240, China
| | - Guanhua Lin
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Peixin Cui
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, P. R. China
| | - Hui Li
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Zhiming Sun
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Kaiwen Wang
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Xu Zhang
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yuhang Gao
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Xiaoyong Huang
- College of Veterinary Medicine, China Agricultural University, Beijing 100094, China
| | - Kui Zhu
- College of Veterinary Medicine, China Agricultural University, Beijing 100094, China
| | - Dean Pan
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Shengcheng Mao
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Wei Li
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
| | - Bingpu Zhou
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Cong Wang
- Faculty of Materials and Manufacturing, Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, P. R. China
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25
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Wang C, Wang K, Feng Y, Li C, Zhou X, Gan L, Feng Y, Zhou H, Zhang B, Qu X, Li H, Li J, Li A, Sun Y, Zhang S, Yang G, Guo Y, Yang S, Zhou T, Dong F, Zheng K, Wang L, Huang J, Zhang Z, Han X. Co and Pt Dual-Single-Atoms with Oxygen-Coordinated Co-O-Pt Dimer Sites for Ultrahigh Photocatalytic Hydrogen Evolution Efficiency. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003327. [PMID: 33615589 DOI: 10.1002/adma.202003327] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The platinum single-atom-catalyst is verified as a very successful route to approach the size limit of Pt catalysts, while how to further improve the catalytic efficiency of Pt is a fundamental scientific question and is challenging because the size issue of Pt is approached at the ultimate ceiling as single atoms. Here, a new route for further improving Pt catalytic efficiency by cobalt (Co) and Pt dual-single-atoms on titanium dioxide (TiO2 ) surfaces, which contains a fraction of nonbonding oxygen-coordinated Co-O-Pt dimers, is reported. These Co-Pt dimer sites originate from loading high-density Pt single-atoms and Co single-atoms, with them anchoring randomly on the TiO2 substrate. This dual-single-atom catalyst yields 13.4% dimer sites and exhibits an ultrahigh and stable photocatalytic activity with a rate of 43.467 mmol g-1 h-1 and external quantum efficiency of ≈83.4% at 365 nm. This activity far exceeds those of equal amounts of Pt single-atom and typical Pt clustered catalysts by 1.92 and 1.64 times, respectively. The enhancement mechanism relies on the oxygen-coordinated Co-O-Pt dimer coupling, which can mutually optimize the electronic states of both Pt and Co sites to weaken H* binding. Namely, the "mute" Co single-atom is activated by Pt single-atom and the activity of the Pt atom is further enhanced through the dimer interaction. This strategy of nonbonding interactive dimer sites and the oxygen-mediated catalytic mechanisms provide emerging rich opportunities for greatly improving the catalytic efficiency and developing novel catalysts with creating new electronic states.
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Affiliation(s)
- Cong Wang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Kaiwen Wang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yibo Feng
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Chong Li
- International Laboratory for Quantum Functional Materials of Henan, and School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xiaoyuan Zhou
- College of Physics and Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 400044, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Liyong Gan
- College of Physics and Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 400044, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Yajie Feng
- College of Physics and Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 400044, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Hanjun Zhou
- College of Physics and Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 400044, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Bin Zhang
- College of Physics and Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, 400044, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Xianlin Qu
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Hui Li
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jieyuan Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Ang Li
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yiyang Sun
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, China
| | - Shengbai Zhang
- Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Guo Yang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yizhong Guo
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Shize Yang
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Tianhua Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
| | - Fan Dong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Kun Zheng
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Lihua Wang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jun Huang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Ze Zhang
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
- Department of Material Science, Zhejiang University, Hangzhou, 310008, China
| | - Xiaodong Han
- Beijing Key Lab of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, P. R. China
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26
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Zhang H, Wang Y, Zuo S, Zhou W, Zhang J, Lou XWD. Isolated Cobalt Centers on W 18O 49 Nanowires Perform as a Reaction Switch for Efficient CO 2 Photoreduction. J Am Chem Soc 2021; 143:2173-2177. [PMID: 33508937 DOI: 10.1021/jacs.0c08409] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Isolated cobalt atoms have been successfully decorated onto the surface of W18O49 ultrathin nanowires. The Co-atom-decorated W18O49 nanowires (W18O49@Co) greatly accelerate the charge carrier separation and electron transport in the catalytic system. Moreover, the surface decoration with Co atoms modifies the energy configuration of the W18O49@Co hybrid and thus boosts the redox capability of photoexcited electrons for CO2 reduction. The decorated Co atoms work as the real active sites and, perhaps more importantly, perform as a reaction switch to enable the reaction to proceed. The optimized catalyst delivers considerable activity for photocatalytic CO2 reduction, yielding an impressive CO generation rate of 21.18 mmol g-1 h-1.
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Affiliation(s)
- Huabin Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Yan Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Shouwei Zuo
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Zhou
- Department of Applied Physics, Faculty of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Jing Zhang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
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27
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Liu H, Wang C, Wang G. Photocatalytic Advanced Oxidation Processes for Water Treatment: Recent Advances and Perspective. Chem Asian J 2020; 15:3239-3253. [PMID: 32860468 DOI: 10.1002/asia.202000895] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/28/2020] [Indexed: 11/10/2022]
Abstract
Nowadays, an ever-increasing variety of organic contaminants in water has caused hazards to the ecological environment and human health. Many of them are persistent and non-biodegradable. Various techniques have been studied for sewage treatment, including biological, physical and chemical methods. Photocatalytic advanced oxidation processes (AOPs) have received increasing attention due to their fast reaction rates and strong oxidation capability, low cost compared with the non-photolytic AOPs. This review is dedicated to summarizing up-to-date research progress in photocatalytic AOPs, such as Fenton or Fenton-like reaction, ozonation and sulfate radical-based advanced oxidation processes. Mechanisms and activation processes are discussed. Then, the paper summarizes photocatalytic materials and modification strategies, including defect chemistry, morphology control, heterostructure design, noble metal deposition. The future perspectives and challenges are also discussed.
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Affiliation(s)
- Hang Liu
- The College of Chemistry and Chemical Engineering, Yangzhou University, 180 Si-Wang-Ting Road, Yangzhou, 225002, P. R. China
| | - Chengyin Wang
- The College of Chemistry and Chemical Engineering, Yangzhou University, 180 Si-Wang-Ting Road, Yangzhou, 225002, P. R. China
| | - Guoxiu Wang
- School of Mathematical and Physical Sciences, University of Technology Sydney City Campus, Broadway, Sydney, NSW 2007, Australia
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28
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Affiliation(s)
- Xiaodong Han
- Beijing University of Technology, Institute of Microstructure and Property of Advanced Materials, Beijing 100124, China.
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29
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Zhao H, Liu X, Dong Y, Xia Y, Wang H, Zhu X. Fabrication of a Z-Scheme {001}/{110} Facet Heterojunction in BiOCl to Promote Spatial Charge Separation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31532-31541. [PMID: 32551475 DOI: 10.1021/acsami.0c08687] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The realization of high-efficiency carrier separation is of great meaning and challenge, which is crucial to boost the photocatalytic activity. Herein, we tackle this bottleneck by fabricating a {110}/{001} facet junction to effectively facilitate the separation of charge carriers. In this study, two different BiOCl nanoplates (BiOCl-H1 and BiOCl-H2) with coexposed {110} and {001} facets were synthesized under different pH conditions. The ratio of these facets could be adjusted by the pH value of the precursor. It was discovered that the photocatalytic performance of the obtained sample for pollutant removal is dependent on the facet ratio of these facets. Theoretical calculation results show the difference in the electronic structure and staggered alignment of these facets, thus endowing BiOCl with the possibility to fabricate a facet junction. Based on our logical analyses, the Z-scheme charge-transfer mechanism was accordingly put forward. Our work opens a new avenue for the construction of a Z-scheme facet heterojunction to enhance charge separation.
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Affiliation(s)
- Han Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xiang Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yuming Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yongmei Xia
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Haijun Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xiangmiao Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
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30
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Zhou X, Yan F, Wu S, Shen B, Zeng H, Zhai J. Remarkable Piezophoto Coupling Catalysis Behavior of BiOX/BaTiO 3 (X = Cl, Br, Cl 0.166 Br 0.834 ) Piezoelectric Composites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001573. [PMID: 32431007 DOI: 10.1002/smll.202001573] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
Polarization field engineering of piezoelectric materials is considered as an advisable strategy in fine-tuning photocatalytic performance which has drawn much attention recently. However, the efficient charge separation that determines the photocatalytic reactivities of these materials is quite restricted. Herein, a judicious combination of piezoelectric and photocatalytic performances of BiOX/BaTiO3 (X = Cl, Br, Cl0.166 Br0.834 ) to enable a high piezophotocatalytic activity is demonstrated. Under the synergic advantages of chemical potential difference and piezoelectric potential difference in BiOX/BaTiO3 composites, the photoinduced carriers recombination is largely halted, which directly contributes to the significantly promoted piezophotocatalytic activity of piezoelectric composites. Inspiringly, the BiOBr/BaTiO3 composites under light irradiation with auxiliary ultrasonic activation result in an ultrahigh and stable photocatalytic performance, which is much higher than the total of those by isolated photocatalysis and piezocatalysis, and can rival current excellent photocatalytic system. In fact, the theoretical piezoelectric potential difference of BiOBr/BaTiO3 composites reaches 100 mV, which far exceeds the pure BaTiO3 of 31.21 mV and BiOBr of 30 mV, respectively. First, fabrication of BiOX/BaTiO3 piezoelectric composites and its remarkable piezophoto coupling catalysis behavior lays new ground for developing high-efficiency piezoelectric photocatalysts in purifying wastewater, killing bacteria, and other piezophototronic processes.
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Affiliation(s)
- Xiaofeng Zhou
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Fei Yan
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Shuanghao Wu
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Bo Shen
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Huarong Zeng
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Jiwei Zhai
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
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31
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He W, Wang K, Zhu Z, Zou H, Zhou K, Hu Z, Duan Y, Feng Y, Gan L, Lv K, Wang C, Han X, Zhou X. Ultra-small subnano TiO x clusters as excellent cocatalysts for the photocatalytic degradation of tetracycline on plasmonic Ag/AgCl. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01876j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Subnano TiOx clusters as cocatalysts on Ag/AgCl exhibit an unparalleled TC photodegradation reaction rate under simulated sunlight irradiation.
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