51
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Min F, Wei Z, Yu Z, Xiao Y, Guo S, Song R, Li J. Construction of a hierarchical ZnIn 2S 4/C 3N 4 heterojunction for the enhanced photocatalytic degradation of tetracycline. Dalton Trans 2022; 51:2323-2330. [PMID: 35043131 DOI: 10.1039/d1dt03716a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Efficient charge separation and sufficiently exposed active sites are both critical limiting factors for solar-driven organic contaminant degradation. Herein, we describe a hierarchical heterojunction photocatalyst fabricated by the in situ growth of ZnIn2S4 nanosheets on micro-tubular C3N4 (denoted as ZIS/TCN). This ZIS/TCN heterojunction photocatalyst can take advantage of the hollow structure with stronger light absorption capacity and more active sites, and its heterostructure can accelerate the separation and transfer of photogenerated charge carriers. The optimized ZIS/TCN-3 exhibits superb photocatalytic efficiency for the degradation of tetracycline (86.1%, 60 min), maintains excellent stability and recyclability, and provides a facile strategy for the synthesis of efficient heterojuction photocatalysts towards wastewater treatment. In addition, the plausible photocatalytic degradation pathway of tetracycline is proposed according to the intermediates identified by LC-mass analysis.
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Affiliation(s)
- Feng Min
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
| | - Zhengqing Wei
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
| | - Zhen Yu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
| | - Yuting Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
| | - Shien Guo
- Institute of Advanced Materials (IAM), College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China
| | - Renjie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.
| | - Jinheng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China.
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52
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Xue J, Yu Y, Yang C, Zhang K, Zhan X, Song J, Gui J, Li Y, Jin X, Gao S, Xie Y. Developing Atomically Thin Li 1.81H 0.19Ti 2O 5·2H 2O Nanosheets for Selective Photocatalytic CO 2 Reduction to CO. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:523-530. [PMID: 34932356 DOI: 10.1021/acs.langmuir.1c02944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Solar-driven CO2 conversion to carbon-based fuels is an attractive approach to alleviate the worsening global climate change and increasing energy issues. However, exploring and designing efficient photocatalysts with excellent activity and stability still remain challenging. Herein, layered Li1.81H0.19Ti2O5·2H2O (LHTO) nanosheets were explored as the photocatalyst for photocatalytic CO2 reduction, and atomically thin LHTO nanosheets with one-unit-cell thickness were successfully constructed for photocatalytic CO2 reduction. The atomically thin LHTO nanosheets exhibited excellent performance for CO2 photoreduction to CO, with a yield rate of 4.0 μmol g-1 h-1, a selectivity of 93%, and over 25 h photostability, dramatically outperforming the bulk LHTO. The better performance of the atomically thin LHTO nanosheets was experimentally verified to benefit from more sites for CO2 adsorption, faster electron transfer rate, and a more negative conduction band edge compared with bulk LHTO. This work provided a methodological basis for designing more efficient photocatalytic CO2 reduction catalysts.
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Affiliation(s)
- Jingyu Xue
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Yu Yu
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Chen Yang
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, People's Republic of China
| | - Kaifu Zhang
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Xiaowen Zhan
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Jimei Song
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Jiaojiao Gui
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Yunkai Li
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Xin Jin
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Shan Gao
- School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, People's Republic of China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui 230026, People's Republic of China
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53
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Wang Z, Lai Y, Cai J, Jia S, Lin L, Feng Z, Zheng Z, Xie R, Li J. A photo-responsive p-Si/TiO2/Ag heterostructure with charge transfer for recyclable surface-enhanced Raman scattering substrates. CrystEngComm 2022. [DOI: 10.1039/d1ce01310f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Si/TiO2/Ag heterostructure is prepared as a recyclable SERS substrate with EF of 1.23 × 1012 and excellent repeatability, which can boost performance effectively by the synergistic contribution of the EM and CT enhancement effects.
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Affiliation(s)
- Zhezhe Wang
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
| | - Yueting Lai
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China
- Fujian College of Water Conservancy and Electric Power, Sanming, 366000, China
| | - Jieyi Cai
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
| | - Siyi Jia
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
| | - Lin Lin
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
| | - Zhuohong Feng
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
| | - Zhiqiang Zheng
- College of Physics and Energy, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
| | - Rongrong Xie
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China
| | - Jiabing Li
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, China
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54
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Luo T, Wang Z, Wei X, Huang X, Bai S, Chen J. Surface Enriching Promotes Decomposition of Benzene from Air. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02296b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The low generation rate and short lifetime of reactive oxidation radicals typical like ·OH strictly limit the photocatalytic degradation of benzene in the air. Here, we adopt copper dopant to...
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Wang R, Zhang Y, Chen W, Tian Y, Song K, Li J, Wang G, Shi G. Degradation of formaldehyde aqueous solution by Bi based catalyst and its activity evaluation. RSC Adv 2022; 12:13052-13064. [PMID: 35520143 PMCID: PMC9053449 DOI: 10.1039/d2ra01435a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/11/2022] [Indexed: 11/21/2022] Open
Abstract
Bi based catalysts have attracted continuous attention from the scientific community because of their excellent photochemical properties and wide application in photocatalytic treatment of environmental pollution. A series of Bi based catalysts with good crystallinity and high purity were prepared by calcination and hydrothermal synthesis. In the application of degrading formaldehyde aqueous solution in a mercury lamp and xenon lamp atmosphere, it was found that BiVO4 and Bi2WO6 showed excellent photochemical properties under ultraviolet and visible light. The tests of PL, UV-Vis and EIS confirmed their high activity. In the calculation based on density functional theory (DFT), through the analysis of the energy band structure, density of states (DOS) and partial wave density of states (PDOS), it is found that the d orbital of V and W elements has a great influence on the position and size of the energy band of the catalyst, which makes it have high activity and excellent electrochemical properties. Bi based catalysts have attracted continuous attention from the scientific community because of their excellent photochemical properties and wide application in photocatalytic treatment of environmental pollution.![]()
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Affiliation(s)
- Runquan Wang
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Yuerong Zhang
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Wanping Chen
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Yuan Tian
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Kai Song
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Jiaxian Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Guoying Wang
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
| | - Gaofeng Shi
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730100, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730100, China
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56
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Koutavarapu R, Syed K, Pagidi S, Jeon MY, Rao MC, Lee DY, Shim J. An effective CuO/Bi 2WO 6 heterostructured photocatalyst: Analyzing a charge-transfer mechanism for the enhanced visible-light-driven photocatalytic degradation of tetracycline and organic pollutants. CHEMOSPHERE 2022; 287:132015. [PMID: 34492418 DOI: 10.1016/j.chemosphere.2021.132015] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/07/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Over the past few years, industrial pollution has had a negative impact on aquatic life by releasing significant amounts of hazardous chemicals into the ecosystem. Therefore, it is imperative to develop photocatalytic materials with good photocatalytic activity and easy separation. Photocatalytic degradation has been employed for the removal of such contaminants using binary hybrid nanocomposites as photocatalysts. In the present study, binary CuO/Bi2WO6 (CuBW) nanocomposites with different loadings of Bi2WO6 (~5, 10, and 15 mg) were successfully constructed using a simple hydrothermal method and used as a potential photocatalyst for the degradation of tetracycline (TC) and methylene blue (MB) under visible-light irradiation. The structure, surface morphology, and optical properties were studied to investigate the formation of the heterostructure. Among the prepared samples, the CuBW nanocomposite containing the optimum content of Bi2WO6 (~10 mg) exhibited superior activity toward the photocatalytic degradation of TC (97.72%) in 75 min and MB (99.43%) in 45 min under visible-light illumination. Radical trapping experiments suggested that holes and •OH radicals were the dominant reactive species during the photocatalytic process. The photoelectrochemical results also confirmed the improved separation and transfer of electron-hole pairs at the interface of Bi2WO6 and CuO. Our results demonstrate that the binary CuO/Bi2WO6 nanocomposite has significant potential applications in the field of photocatalysis due to its enhanced separation of the photoexcited charge carriers and strong synergistic interactions.
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Affiliation(s)
- Ravindranadh Koutavarapu
- Department of Robotics and Intelligent Machine Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea
| | - Kamaluddin Syed
- Department of Mechanical Engineering, Vignan's Institute of Information Technology, Visakhapatnam, 530049, Andhra Pradesh, India
| | - Srinivas Pagidi
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Min Yong Jeon
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea; Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - M C Rao
- Department of Physics, Andhra Loyola College, Vijayawada, 520-008, Andhra Pradesh, India.
| | - Dong-Yeon Lee
- Department of Robotics and Intelligent Machine Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea.
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea.
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57
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Basumatary B, Basumatary R, Ramchiary A, Konwar D. Evaluation of Ag@TiO 2/WO 3 heterojunction photocatalyst for enhanced photocatalytic activity towards methylene blue degradation. CHEMOSPHERE 2022; 286:131848. [PMID: 34388867 DOI: 10.1016/j.chemosphere.2021.131848] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/29/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Methylene blue is a dye that is extensively used in the textile industry but it is a hazardous, carcinogenic, and mutagenic pollutant. Therefore, the treatment of wastewater containing methylene blue by photocatalytic degradation under visible light without using any sacrificial agent (H2O2) is an important method towards attaining an eco-friendly environment. Herein, the nanocomposite of Ag-doped TiO2 on WO3 nanoparticles (Ag@TiO2/WO3) was prepared by a modified sol-gel precipitation route, and their physicochemical properties were studied. The bandgap of Ag sensitized metal oxide nanocomposite in Ag@TiO2/WO3 was slightly reduced compared to the pristine titania due to the creation of interstitial energy states during colligation of titania and tungsten oxide. The ease of charge carrier transfers through the heterojunction of TiO2/WO3 increased the photocatalytic activity of the photocatalyst. Furthermore, in Ag@TiO2/WO3 the plasmonic Ag sensitization to the host semiconductor TiO2 has further boosted the rate of photocatalytic degradation because of the surface plasmon resonance (SPR) and hindrance of charge carrier recombination. Due to the synergistic effect of SPR and the presence of heterojunction in Ag@TiO2/WO3, the photocatalytic activity was found to be 25 times higher for Ag@TiO2/WO3 than that of commercial DP25 photocatalyst under visible light towards methylene blue degradation.
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Affiliation(s)
- Bablu Basumatary
- Department of Physics, Bodoland University, Rangalikhata, Kokrajhar, Assam, 783370, India; Institute of Advanced Study in Science and Technology, Guwahati, Assam, 781035, India
| | - Rajmoni Basumatary
- Department of Physics, Bodoland University, Rangalikhata, Kokrajhar, Assam, 783370, India
| | - Anjalu Ramchiary
- Department of Physics, Bodoland University, Rangalikhata, Kokrajhar, Assam, 783370, India.
| | - Dimpul Konwar
- Department of Materials Science and Engineering, Gachon University, Bokjung-dong, Seongnam-si, Gyeonggi-do, 1342, Republic of Korea.
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58
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Fan X, Pang Q. Strong Electrostatic Adsorption Strategy to Enhance Interaction Between Ultra‐Small Ru Nanoparticles and Carbon for High‐Efficient Electrocatalyst Toward HER in Acidic and Alkaline Media. ChemElectroChem 2021. [DOI: 10.1002/celc.202101018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xizheng Fan
- College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Qingqing Pang
- School of Chemical Engineering Zhengzhou University Zhengzhou 450001 China
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59
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Wang T, Chen W, Xia S, Ren Z, Dai D, Yang X, Zhou C. Anisotropic d-d Transition in Rutile TiO 2. J Phys Chem Lett 2021; 12:10515-10520. [PMID: 34677987 DOI: 10.1021/acs.jpclett.1c02931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The band gap state of TiO2, which is dominated by Ti3+ 3d character, is of great relevance to light absorption, electron trapping, charge recombination, and conduction band structure. Despite the importance, the explanation of the excitation from this state is controversial. To this end, the electronic structures of TiO2(110) and TiO2(011)-(2 × 1) have been systematically measured with two-photon photoemission spectroscopy. The results reveal the anisotropic nature of the electronic structure in rutile TiO2 at seemingly equivalent directions of [110] and [11̅0], the long axes of the TiO6 blocking unit. Although the resonant energy of these two d-d transitions is identical, the energy levels are systematically shifted by 0.1 eV. We propose this anisotropy originates from the broken symmetry of the rutile TiO2 crystals caused by the surface. The proposed asymmetry-caused electronic structure anisotropy could be generalized to other similar materials and may affect associated catalytic properties. This work provides an important benchmark for related calculations.
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Affiliation(s)
- Tianjun Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
| | - Wei Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, 100049 Beijing, P.R. China
| | - Shucai Xia
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, 100049 Beijing, P.R. China
| | - Zefeng Ren
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
| | - Dongxu Dai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen, Guangdong 518055, P.R. China
| | - Chuanyao Zhou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, Liaoning, P.R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, 100049 Beijing, P.R. China
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60
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Ethanol-assisted molten salt synthesis of Bi4Ti3O12/Bi2Ti2O7 with enhanced visible light photocatalytic performance. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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61
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Bagirova AV, Kosyakov DV, Guskov AE. The 50 Most Highly Cited Reviews of 2013–2017. SCIENTIFIC AND TECHNICAL INFORMATION PROCESSING 2021. [PMCID: PMC8551947 DOI: 10.3103/s0147688221030035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The main characteristics of the 50 most highly cited reviews based on Scopus data, published in 2013–2017, have been studied. A detailed analysis of these reviews is given in terms of topic relevance, authors’ team authority, and sources rating. The majority of reviews were for medicine, chemistry, biochemistry, genetics, and molecular biology. Many of them were written with the participation of an authoritative expert group from the world’s leading scientific institutions as a regularly updated result review. The largest numbers of authors belonged to the G7 countries, China, and Switzerland. In comparison with these reviews, the Russian practice of preparing review publications has been considered.
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Paidi VK, Lee BH, Ahn D, Kim KJ, Kim Y, Hyeon T, Lee KS. Oxygen-Vacancy-Driven Orbital Reconstruction at the Surface of TiO 2 Core-Shell Nanostructures. NANO LETTERS 2021; 21:7953-7959. [PMID: 34585926 DOI: 10.1021/acs.nanolett.1c01995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Oxygen vacancies and their correlation with the electronic structure are crucial to understanding the functionality of TiO2 nanocrystals in material design applications. Here, we report spectroscopic investigations of the electronic structure of anatase TiO2 nanocrystals by employing hard and soft X-ray absorption spectroscopy measurements along with the corresponding model calculations. We show that the oxygen vacancies significantly transform the Ti local symmetry by modulating the covalency of titanium-oxygen bonds. Our results suggest that the altered Ti local symmetry is similar to the C3v, which implies that the Ti exists in two local symmetries (D2d and C3v) at the surface. The findings also indicate that the Ti distortion is a short-range order effect and presumably confined up to the second nearest neighbors. Such distortions modulate the electronic structure and provide a promising approach to structural design of the TiO2 nanocrystals.
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Affiliation(s)
- Vinod K Paidi
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Byoung-Hoon Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Docheon Ahn
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Ki-Jeong Kim
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Younghak Kim
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Kug-Seung Lee
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
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Chen X, Wang Y, Zhang L. Recent Progress in the Chemical Upcycling of Plastic Wastes. CHEMSUSCHEM 2021; 14:4137-4151. [PMID: 34003585 DOI: 10.1002/cssc.202100868] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/18/2021] [Indexed: 06/12/2023]
Abstract
The massive generation of plastic wastes without satisfactory treatment has induced severe environmental problems and gained increasing attentions. In this Minireview, recent progresses in the chemical upcycling of plastic wastes by using various methods (mainly in the past three to five years) is summarized. The chemical upcycling of plastic wastes points out a "plastic-based refinery" concept, which is to use the plastic wastes as platform feedstocks to produce highly valuable monomeric or oligomeric compounds, putting the plastic wastes back into a circular economy. The different chemical methods to upcycle plastic wastes, including hydrogenolysis, photocatalysis, pyrolysis, solvolysis, and others, are introduced in each section to valorize diverse plastic feedstocks into value-added chemicals, materials, or fuels. In addition, other emerging technologies as well as the new generation of plastic thermosets are covered.
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Affiliation(s)
- Xi Chen
- China-UK Low Carbon College, Shanghai Jiao Tong University, 3 Yinlian Rd, Pudong District, Shanghai, 201306, P. R. China
| | - Yudi Wang
- China-UK Low Carbon College, Shanghai Jiao Tong University, 3 Yinlian Rd, Pudong District, Shanghai, 201306, P. R. China
| | - Lei Zhang
- China-UK Low Carbon College, Shanghai Jiao Tong University, 3 Yinlian Rd, Pudong District, Shanghai, 201306, P. R. China
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64
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Singh J, Soni R. Efficient charge separation in Ag nanoparticles functionalized ZnO nanoflakes/CuO nanoflowers hybrids for improved photocatalytic and SERS activity. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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65
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Lv T, Xiao B, Zhou S, Zhao J, Wu T, Zhang J, Zhang Y, Liu Q. Rich oxygen vacancies, mesoporous TiO 2 derived from MIL-125 for highly efficient photocatalytic hydrogen evolution. Chem Commun (Camb) 2021; 57:9704-9707. [PMID: 34555135 DOI: 10.1039/d1cc01669e] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report a mesoporous TiO2 with a large specific surface area and rich oxygen vacancies using a Ti-based MOF (MIL-125) as a precursor through high-temperature annealing. Such integration of a unique mesoporous structure and oxygen vacancies provides effective carrier transport channels, increases surface active sites, and enhances photocatalytic activity for the hydrogen evolution reaction.
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Affiliation(s)
- Tianping Lv
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Bin Xiao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Shiqiang Zhou
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Jianhong Zhao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Tai Wu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Jin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Yumin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
| | - Qingju Liu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China.
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66
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Huang H, Shi R, Zhang X, Zhao J, Su C, Zhang T. Photothermal‐Assisted Triphase Photocatalysis Over a Multifunctional Bilayer Paper. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110336] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Huining Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Xuerui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiaqing Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
| | - Chenliang Su
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
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67
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Liu M, Liu J, Zhou K, Chen J, Sun Q, Bao Z, Yang Q, Yang Y, Ren Q, Zhang Z. Turn-On Photocatalysis: Creating Lone-Pair Donor-Acceptor Bonds in Organic Photosensitizer to Enhance Intersystem Crossing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100631. [PMID: 34339109 PMCID: PMC8456219 DOI: 10.1002/advs.202100631] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/28/2021] [Indexed: 05/05/2023]
Abstract
There is growing interest in developing triplet photosensitizers in terms of implementing photochemical strategies in synthetic chemistry. However, synthesis of stable triplet organic photosensitizers is nontrivial and often requires the use of heavy atoms. Herein, an alternative strategy is demonstrated to enhance the triplet generation efficiency by implanting lone-pair donor-acceptor bonds in the conjugated covalent organic frameworks (COFs). This powerful method is validated using COFs that host triazine, a moiety that has been extensively investigated in photocatalysis. Spectroscopic analysis and theoretical calculations reveal substantial improvements in the photoabsorptivity and triple-state photogeneration efficiency, consistent with catalytic tests concerning industrially relevant sulfide oxidation. These systems represent a promising addition to the rapidly increasing arsenal of synthetic photocatalytic systems.
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Affiliation(s)
- Mingjie Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Junnan Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
| | - Kai Zhou
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Jingwen Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
| | - Qi Sun
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Yiwen Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityZheda Road 38Hangzhou310027China
- Institute of Zhejiang University‐Quzhou78 Jiuhua Boulevard NorthQuzhou324000China
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68
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Huang H, Shi R, Zhang X, Zhao J, Su C, Zhang T. Photothermal-assisted triphase photocatalysis over a multifunctional bilayer paper. Angew Chem Int Ed Engl 2021; 60:22963-22969. [PMID: 34374187 DOI: 10.1002/anie.202110336] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 12/07/2022]
Abstract
Photocatalysis as one of the future environment technologies has been investigated for decades. Despite great efforts in catalyst engineering, the widely used powder dispersion and photoelectrode systems are still restricted by sluggish interfacial mass transfer and chemical processes. Here we develop a scalable bilayer paper from commercialized TiO 2 and carbon nanomaterials, self-supported at gas-liquid-solid interfaces for photothermal-assisted triphase photocatalysis. The photogeneration of reactive oxygen species can be facilitated through fast oxygen diffusion over triphase interfaces, while the interfacial photothermal effect promotes the following free radical reaction for advanced oxidation of phenol. Under full spectrum irradiation, the triphase system shows 13 times higher reaction rate than diphase controlled system, achieving 88.4% mineralization of high concentration phenol within 90 min full spectrum irradiation. The bilayer paper also exhibits high stability over 40 times cycling experiments and sunlight driven feasibility, showing potentials for large scale photocatalytic applications by being further integrated into a triphase flow reactor.
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Affiliation(s)
- Huining Huang
- Technical Institute of Physics and Chemistry Chinese Academy of Sciences: Technical Institute of Physics and Chemistry, KLPCOM, CHINA
| | - Run Shi
- Technical Institute of Physics and Chemistry Chinese Academy of Sciences: Technical Institute of Physics and Chemistry, KLPCOM, CHINA
| | - Xuerui Zhang
- Technical Institute of Physics and Chemistry Chinese Academy of Sciences: Technical Institute of Physics and Chemistry, KLPCOM, CHINA
| | - Jiaqing Zhao
- Technical Institute of Physics and Chemistry Chinese Academy of Sciences: Technical Institute of Physics and Chemistry, KLPCOM, CHINA
| | - Chenliang Su
- Shenzhen University, Institute of microscale and optoelectronics, CHINA
| | - Tierui Zhang
- Technical Institute of Physics and Chemistry (TIPC), Chinese Academy of Sciences (CAS), Key Laboratory of Photochemical Conversion and Optoelectronic Materials, No.29 Zhongguancun East Road, Haidian District,, 100190, Beijing, CHINA
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69
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Pichler CM, Bhattacharjee S, Rahaman M, Uekert T, Reisner E. Conversion of Polyethylene Waste into Gaseous Hydrocarbons via Integrated Tandem Chemical-Photo/Electrocatalytic Processes. ACS Catal 2021; 11:9159-9167. [PMID: 34386271 PMCID: PMC8353629 DOI: 10.1021/acscatal.1c02133] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/22/2021] [Indexed: 12/16/2022]
Abstract
![]()
The chemical inertness
of polyethylene makes chemical recycling
challenging and motivates the development of new catalytic innovations
to mitigate polymer waste. Current chemical recycling methods yield
a complex mixture of liquid products, which is challenging to utilize
in subsequent processes. Here, we present an oxidative depolymerization
step utilizing diluted nitric acid to convert polyethylene into organic
acids (40% organic acid yield), which can be coupled to a photo- or
electrocatalytic decarboxylation reaction to produce hydrocarbons
(individual hydrocarbon yields of 3 and 20%, respectively) with H2 and CO2 as gaseous byproducts. The integrated
tandem process allows for the direct conversion of polyethylene into
gaseous hydrocarbon products with an overall hydrocarbon yield of
1.0% for the oxidative/photocatalytic route and 7.6% for the oxidative/electrolytic
route. The product selectivity is tunable with photocatalysis using
TiO2 or carbon nitride, yielding alkanes (ethane and propane),
whereas electrocatalysis on carbon electrodes produces alkenes (ethylene
and propylene). This two-step recycling process of plastics can use
sunlight or renewable electricity to convert polyethylene into valuable,
easily separable, gaseous platform chemicals.
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Affiliation(s)
- Christian M. Pichler
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Subhajit Bhattacharjee
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Motiar Rahaman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Taylor Uekert
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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70
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In-situ construction of amorphous/crystalline contact Bi2S3/Bi4O7 heterostructures for enhanced visible-light photocatalysis. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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71
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Xu BB, Zhou M, Ye M, Yang LY, Wang HF, Wang XL, Yao YF. Cooperative Motion in Water-Methanol Clusters Controls the Reaction Rates of Heterogeneous Photocatalytic Reactions. J Am Chem Soc 2021; 143:10940-10947. [PMID: 34281341 DOI: 10.1021/jacs.1c02128] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Detailed information about the influences of the cooperative motion of water and methanol molecules on practical solid-liquid heterogeneous photocatalysis reactions is critical for our understanding of photocatalytic reactions. The present work addresses this issue by applying operando nuclear magnetic resonance (NMR) spectroscopy, in conjunction with density functional theory (DFT) calculations and ab initio molecular dynamics (AIMD) simulations, to investigate the dynamic behaviors of heterogeneous photocatalytic systems with different molar ratios of water to methanol on rutile-TiO2 photocatalyst. The results demonstrate that methanol and water molecules are involved in the cooperative motions, and the cooperation often takes the form of methanol-water clusters that govern the number of methanol molecules reaching to the active sites of the photocatalyst per unit time, as confirmed by the diffusion coefficients of the methanol molecule calculated in the binary methanol-water solutions. Nuclear Overhauser effect spectroscopy experiments reveal that the clusters are formed by the hydrogen bonding between the -OH groups of CH3OH and H2O. The formation of such methanol-water clusters is likely from an energetic standpoint in low-concentration methanol, which eventually determines the yields of methanol reforming products.
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Affiliation(s)
- Bei-Bei Xu
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, People's Republic of China
| | - Min Zhou
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Man Ye
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, People's Republic of China
| | - Ling-Yun Yang
- iHuman Institute, ShanghaiTech University, Shanghai 201210, China
| | - Hai-Feng Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Xue Lu Wang
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, People's Republic of China
| | - Ye-Feng Yao
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, People's Republic of China
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72
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Qu Z, Chen X, Zhong S, Deng GJ, Huang H. NaI/PPh 3-Mediated Photochemical Reduction and Amination of Nitroarenes. Org Lett 2021; 23:5349-5353. [PMID: 34180677 DOI: 10.1021/acs.orglett.1c01654] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A mild transition-metal- and photosensitizer-free photoredox system based on the combination of NaI and PPh3 was found to enable highly selective reduction of nitroarenes. This protocol tolerates a broad range of reducible functional groups such as halogen (Cl, Br, and even I), aldehyde, ketone, carboxyl, and cyano. Moreover, the photoredox catalysis with NaI and stoichiometric PPh3 provides also an alternative entry to Cadogan-type reductive amination when o-nitrobiarenes were used.
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Affiliation(s)
- Zhonghua Qu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Xing Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Shuai Zhong
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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73
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Wang B, Zhong S, Tang S, Yue H, Ma K, Liu C, Liang B. Photocatalytic Production of Methyl Formate by Methanol Self-Coupling: From Oxidative Dehydrogenation to Direct Dehydrogenation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bin Wang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Shan Zhong
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Siyang Tang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Hairong Yue
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
- Institute of New Energy and Low-Carbon Technology, Chuanda Road, Shuangliu Country, Chengdu 610207, China
| | - Kui Ma
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Changjun Liu
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Bin Liang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, China
- Institute of New Energy and Low-Carbon Technology, Chuanda Road, Shuangliu Country, Chengdu 610207, China
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74
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Fukuzumi R, Buerkle M, Li Y, Kaneko S, Li P, Kobayashi S, Fujii S, Kiguchi M, Nakamura H, Tsukagoshi K, Nishino T. Water Splitting Induced by Visible Light at a Copper-Based Single-Molecule Junction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2008109. [PMID: 34089231 DOI: 10.1002/smll.202008109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Water splitting is an essential process for converting light energy into easily storable energy in the form of hydrogen. As environmentally preferable catalysts, Cu-based materials have attracted attention as water-splitting catalysts. To enhance the efficiency of water splitting, a reaction process should be developed. Single-molecule junctions (SMJs) are attractive structures for developing these reactions because the molecule electronic state is significantly modulated, and characteristic electromagnetic effects can be expected. Here, water splitting is induced at Cu-based SMJ and the produced hydrogen is characterized at a single-molecule scale by employing electron transport measurements. After visible light irradiation, the conductance states originate from Cu/hydrogen molecule/Cu junctions, while before irradiation, only Cu/water molecule/Cu junctions were observed. The vibration spectra obtained from inelastic electron tunneling spectroscopy combined with the first-principles calculations reveal that the water molecule trapped between the Cu electrodes is decomposed and that hydrogen is produced. Time-dependent and wavelength-dependent measurements show that localized-surface plasmon decomposes the water molecule in the vicinity of the junction. These findings indicate the potential ability of Cu-based materials for photocatalysis.
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Affiliation(s)
- Risa Fukuzumi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Marius Buerkle
- CD-FMat, National Institute of Advanced Industrial Science and Technology (AIST), Central 2, Umezono 1-1-1, Tsukuba, Ibaraki, 305-8568, Japan
| | - Yu Li
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Satoshi Kaneko
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Peihui Li
- Institute of Modern Optics, Nankai University, 94 Weijin Road, Tianjin, 300350, P. R. China
| | - Shuji Kobayashi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Shintaro Fujii
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Manabu Kiguchi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Hisao Nakamura
- CD-FMat, National Institute of Advanced Industrial Science and Technology (AIST), Central 2, Umezono 1-1-1, Tsukuba, Ibaraki, 305-8568, Japan
| | - Kazuhito Tsukagoshi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tomoaki Nishino
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
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75
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Wu F, Yu S, Zhong Y, Chen W, Dan M, Zou Y, Yuan C, Zhou Y. Homogeneous Photocatalytic Hydrogen Evolution System with Assembly of CdSe Quantum Dots and Graphene Oxide. Top Catal 2021. [DOI: 10.1007/s11244-021-01439-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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76
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Tong J, Wang J, Shen X, Zhang H, Wang Y, Fang Q, Chen L. One-Pot Synthesis of Schiff Bases by Defect-Induced TiO 2-x-Catalyzed Tandem Transformation from Alcohols and Nitro Compounds. Inorg Chem 2021; 60:10715-10721. [PMID: 34184890 DOI: 10.1021/acs.inorgchem.1c01406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Schiff bases that are generally formed from condensation reactions of aldehydes (or ketones) and amino groups could also be produced by a photodriven one-pot tandem reaction between alcohols and nitro compounds, in our case. Herein, TiO2-x porous cages derived from NH2-MIL-125 by a self-sacrificing template route are used to study the organic transformation and exhibit 100% conversion efficiency of nitrobenzene and 100% selectivity for Schiff bases in the system of benzyl alcohol (5 mL) and nitrobenzene (41 μL) upon light irradiation, but hydrogen by dehydrogenation of benzyl alcohol cannot be detected. Successful occurrence of the organic transformation is mainly attributed to Ti(III)-oxygen vacancy associates. Surface oxygen vacancy-related Ti(III) sites are responsible for binding with nitro groups, and low-coordinated Ti5c sites selectively adsorb hydroxyl groups of benzyl alcohol. The Ti(III) and oxygen vacancy associates capture photogenerated electrons for achievement of multielectron reduction of nitrobenzene and the subsequent Schiff base condensation reaction with the as-formed benzaldehyde.
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Affiliation(s)
- Jing Tong
- Department of Pharmaceutical Engineering, Bengbu Medical College, Bengbu, Anhui 233030, P. R. China
| | - Jinfeng Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiaoshuang Shen
- School of Physical Science & Technology, Yangzhou University, Yangzhou 225002, P. R. China
| | - Hui Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yao Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Qiang Fang
- Department of Pharmaceutical Engineering, Bengbu Medical College, Bengbu, Anhui 233030, P. R. China
| | - Liyong Chen
- Department of Pharmaceutical Engineering, Bengbu Medical College, Bengbu, Anhui 233030, P. R. China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
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77
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Chen H, Yang Z, Wang X, Polo-Garzon F, Halstenberg PW, Wang T, Suo X, Yang SZ, Meyer HM, Wu Z, Dai S. Photoinduced Strong Metal-Support Interaction for Enhanced Catalysis. J Am Chem Soc 2021; 143:8521-8526. [PMID: 34081447 DOI: 10.1021/jacs.0c12817] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Strong metal-support interaction (SMSI) construction is a pivotal strategy to afford thermally robust nanocatalysts in industrial catalysis, but thermally induced reactions (>300 °C) in specific gaseous atmospheres are generally required in traditional procedures. In this work, a photochemistry-driven methodology was demonstrated for SMSI construction under ambient conditions. Encapsulation of Pd nanoparticles with a TiOx overlayer, the presence of Ti3+ species, and suppression of CO adsorption were achieved upon UV irradiation. The key lies in the generation of separated photoinduced reductive electrons (e-) and oxidative holes (h+), which subsequently trigger the formation of Ti3+ species/oxygen vacancies (Ov) and then interfacial Pd-Ov-Ti3+ sites, affording a Pd/TiO2 SMSI with enhanced catalytic hydrogenation efficiency. The as-constructed SMSI layer was reversible, and the photodriven procedure could be extended to Pd/ZnO and Pt/TiO2.
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Affiliation(s)
- Hao Chen
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Zhenzhen Yang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Xiang Wang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Felipe Polo-Garzon
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Phillip W Halstenberg
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Tao Wang
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Xian Suo
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Shi-Ze Yang
- Eyring Materials Center, Arizona State University, Tempe, Arizona 85287, United States
| | - Harry M Meyer
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zili Wu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sheng Dai
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States.,Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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78
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Tang DF, Chen X, Guo Q, Yang WS. Effects of surface defects on adsorption of CO and methyl groups on rutile TiO2(110). CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2012221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Deng-fang Tang
- Hangzhou Institute of Advanced studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Xiao Chen
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qing Guo
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wen-shao Yang
- Hangzhou Institute of Advanced studies, Zhejiang Normal University, Hangzhou 311231, China
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79
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Wang D, He Y, Zhong N, He Z, Shen Y, Zeng T, Lu X, Ma J, Song S. In situ chloride-mediated synthesis of TiO 2 thin film photoanode with enhanced photoelectrochemical activity for carbamazepine oxidation coupled with simultaneous cathodic H 2 production and CO 2 conversion to fuels. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124563. [PMID: 33261974 DOI: 10.1016/j.jhazmat.2020.124563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/01/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
This study investigated the simultaneous photoelectrochemical (PEC) degradation of carbamazepine (CBZ), reduction of CO2 and production of H2 using a TiO2 thin film as photoanode and Ag plate as cathode. The photoanode was fabricated using sequential hydrothermal and calcination processes. The use of chloride during the hydrothermal process enhanced formation of oxygen vacancies and defects on the TiO2 surface. Calcination not only further strengthened those features but also enhanced the crystallinity and anatase/rutile ratio, endowing the TiO2 photoanode with superior PEC capacity. Characterization of physicochemical and PEC properties revealed that photogenerated electrons-holes were rapidly generated and efficiently separated on the TiO2 surface during the PEC process. Hydroxyl radicals were the main active species responsible for anodic oxidation of carbamazepine, while hydrogen radicals and carbon dioxide radical anions mediated CO2 reduction and H2 production in the cathodic process. This work confirms the suitability of the prepared TiO2 photoanode for PEC degradation of organic pollutants coupled with CO2 reduction and H2 production.
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Affiliation(s)
- Da Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yinning He
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Na Zhong
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhiqiao He
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yi Shen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Tao Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xiaohui Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
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80
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Rational synthesis and lithium storage properties of hierarchical nanoporous TiO 2(B) assemblies with tailored crystallites and architectures. J Colloid Interface Sci 2021; 600:530-536. [PMID: 34030009 DOI: 10.1016/j.jcis.2021.05.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/03/2021] [Accepted: 05/09/2021] [Indexed: 11/24/2022]
Abstract
In comparison to the common anatase, rutile and brookite phases, the bronze phase TiO2 (TiO2(B)) is rarely prepared, and obtaining unique TiO2(B) structures, especially those with complex configurations remains a great challenge. This work presents a completely new synthetic approach for fabricating hierarchical nanoporous TiO2(B) assemblies with tailored crystallites and architectures via the reaction between tetrabutyl titanate and normal fatty acids. Three different kinds of normal fatty acids, i.e., pentanoic acid, hexanoic acid, and nonanoic acid were utilized as the sole solvent. After a simple solvothermal treatment, nanoporous TiO2(B) microspheres constructed by [001]-elongated ultrathin nanorods, randomly aggregated ultrafine nanocrystals, and crystallographically oriented nanocrystals were successfully produced separately. Further investigation revealed that the morphology of the hierarchical assemblies could be modified by using foreign substrates to adjust the growth dynamics of TiO2(B) crystals. As a good illustration, by introducing graphene nanosheets into the tetrabutyl titanate-pentanoic acid system, nanosized [001]-elongated-ultrathin-nanorod-constructed nanoporous TiO2(B) assemblies were obtained, which exhibited superior performance as an anode in Li-ion batteries. This work can not only shed new light on TiO2(B) crystallization, but also provide an effective solution for the rational design of complex TiO2(B) micro-/nanoarchitectures for desired applications.
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81
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Fu B, Wu Z, Guo K, Piao L. Rutile TiO 2 single crystals delivering enhanced photocatalytic oxygen evolution performance. NANOSCALE 2021; 13:8591-8599. [PMID: 33913459 DOI: 10.1039/d1nr01544c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Owing to their scientific and technological importance, the development of highly efficient photocatalytic water oxidation systems with rapid photogenerated charge separation and high surface catalytic activity is highly desirable for the storage and conversion of solar energy. A promising candidate is rutile phase titanium dioxide (TiO2), which has been widely studied over half a century. Specifically, oriented single-crystalline TiO2 surfaces with high oxidative reactivity would be most desirable, but achieving these structures has been limited by the availability of synthetic techniques. In this study, a facile and green synthetic approach was developed for the first time to synthesize rutile TiO2 single crystals with regulable reductive and oxidative facets. Glycolic acid (GA) and sodium fluoride (NaF) are used as the crucial and effective phase and facet controlling agents, respectively. The selective adsorption of F- ions on the facets of rutile TiO2 crystals not only plays a key role in driving the nucleation and preferential growth of the crystals with desired facets but also significantly affects their photocatalytic gas evolution reactivity. With heat treatment, the highly stable F--free rutile TiO2 single crystals with a high percentage of oxidative facets exhibit a superior photocatalytic gas evolution rate (≈116 μmol h-1 per 0.005 g catalyst), 8.5 times higher than that of previous F--containing samples.
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Affiliation(s)
- Bing Fu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhijiao Wu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.
| | - Kai Guo
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Lingyu Piao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China. and Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, P. R. China
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82
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Liu B, Wang J, Parkin IP, Zhao X. The effect of Cu dopants on electron transfer to O 2 and the connection with acetone photocatalytic oxidations over nano-TiO 2. Phys Chem Chem Phys 2021; 23:8300-8308. [PMID: 33875994 DOI: 10.1039/d1cp00118c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Modifying TiO2 with the Cu element has been shown to be useful for photocatalysis. Although it had been known that Cu species could trap electrons from TiO2, whether they can affect the kinetics of electron transfer and how this can contribute to photocatalysis still remain unknown. In the current research, Cu-TiO2 samples were firstly prepared with a hydrothermal reaction and characterized in detail. It was shown that Cu elements were doped in the TiO2 lattice in +1/0 valence states and have a minor effect on the TiO2 structure. By means of photoconductances, it is shown that the Cu dopants could catalyze the electron transfer from TiO2 to O2 by reducing the apparent activation energy (Eapp) by about 2 times. The photocatalytic experiments conducted at different temperatures showed that the Eapp of the acetone photocatalytic oxidations could be decreased by ∼2 times; this implies that the Cu dopants change the photocatalytic pathway. First-principles computation showed that the surface Cu dopants, along with the compensated oxygen vacancies, can mediate both of the electron and hole transfer. By combining other studies, we proposed that the Cu sites could act as Lewis acid and base pairs that could combine with acetone and O2 molecules under UV light illumination; this allows electron transfer to O2via the Cu sites that then react with acetone. As compared to pure TiO2 surfaces, the different chemical environment of the Cu sites leads to the decrease in the Eapp of photocatalysis.
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Affiliation(s)
- Baoshun Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei province 430070, P. R. China.
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83
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Kong W, Zhang X, Guo Y, He G, Liu H, Zhang S, Yang B. TiO2@PCN core-shell nanoarrays decorated with Au nanoparticles for enhanced photoelectrochemical performance. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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84
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Surface engineering of mesoporous anatase titanium dioxide nanotubes for rapid spatial charge separation on horizontal-vertical dimensions and efficient solar-driven photocatalytic hydrogen evolution. J Colloid Interface Sci 2021; 586:75-83. [DOI: 10.1016/j.jcis.2020.10.071] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/11/2020] [Accepted: 10/20/2020] [Indexed: 01/17/2023]
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85
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Deng X, Qian R, Zhou H, Yu L. Organotellurium-catalyzed oxidative deoximation reactions using visible-light as the precise driving energy. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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86
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Dong S, Hu J, Xia S, Wang B, Wang Z, Wang T, Chen W, Ren Z, Fan H, Dai D, Cheng J, Yang X, Zhou C. Origin of the Adsorption-State-Dependent Photoactivity of Methanol on TiO 2(110). ACS Catal 2021. [DOI: 10.1021/acscatal.0c03930] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shanshan Dong
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Jinyuan Hu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Shucai Xia
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Binli Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Zhiqiang Wang
- School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, P. R. China
| | - Tianjun Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Wei Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Zefeng Ren
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
| | - Hongjun Fan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
| | - Dongxu Dai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
| | - Jun Cheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen, Guangdong 518055, P. R. China
| | - Chuanyao Zhou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian, Liaoning 116023, P. R. China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
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87
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Jayawardena HSN, Liyanage SH, Rathnayake K, Patel U, Yan M. Analytical Methods for Characterization of Nanomaterial Surfaces. Anal Chem 2021; 93:1889-1911. [PMID: 33434434 PMCID: PMC7941215 DOI: 10.1021/acs.analchem.0c05208] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- H Surangi N Jayawardena
- Department of Chemistry, The University of Alabama in Huntsville, Huntsville, Alabama 35899, United States
| | - Sajani H Liyanage
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Kavini Rathnayake
- Department of Chemistry, The University of Alabama in Huntsville, Huntsville, Alabama 35899, United States
| | - Unnati Patel
- Department of Chemistry, The University of Alabama in Huntsville, Huntsville, Alabama 35899, United States
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
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88
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Jiang J, Ren H, Huang F, Wang L, Zhang J. Refine the crystallinity of upconversion nanoparticles for NIR-enhanced photocatalysis. CrystEngComm 2021. [DOI: 10.1039/d1ce00550b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new photocatalyst was synthesized by a combination of the upconversion nanoparticle NaYF4:Yb, Tm, Gd (NYTG) and NH2-MIL-101(Cr) (NMC) to form NYTG/NMC.
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Affiliation(s)
- Jiamin Jiang
- Institute of Upconversion Nanoscale Materials, Henan University, Kaifeng, Henan 475004, PR China
- Henan Center for Outstanding Overseas Scientists, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan University, Kaifeng, Henan 475004, PR China
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Hehe Ren
- Institute of Upconversion Nanoscale Materials, Henan University, Kaifeng, Henan 475004, PR China
- Henan Center for Outstanding Overseas Scientists, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan University, Kaifeng, Henan 475004, PR China
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Fuhua Huang
- Institute of Upconversion Nanoscale Materials, Henan University, Kaifeng, Henan 475004, PR China
- Henan Center for Outstanding Overseas Scientists, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan University, Kaifeng, Henan 475004, PR China
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Li Wang
- Institute of Upconversion Nanoscale Materials, Henan University, Kaifeng, Henan 475004, PR China
- Henan Center for Outstanding Overseas Scientists, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan University, Kaifeng, Henan 475004, PR China
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Jinglai Zhang
- Institute of Upconversion Nanoscale Materials, Henan University, Kaifeng, Henan 475004, PR China
- Henan Center for Outstanding Overseas Scientists, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan University, Kaifeng, Henan 475004, PR China
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
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89
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Tian Q, Yi S, Li C, Liu Y, Niu Z, Yue X, Liu Z. Design of charge transfer channels: defective TiO 2/MoP supported on carbon cloth for solar-light-driven hydrogen generation. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01527j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We successfully integrated MoP and TiO2 on flexible carbon cloth (CC) to construct a panel photoreactor with efficient charge transfer channels, where CC acts as an electron collector and guides directional migration of electrons (TiO2 → MoP → CC).
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Affiliation(s)
- Qianqian Tian
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Shasha Yi
- School of Materials Science and Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Chuanqi Li
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Zhulin Niu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xinzheng Yue
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Zhongyi Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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90
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Kranz C, Wächtler M. Characterizing photocatalysts for water splitting: from atoms to bulk and from slow to ultrafast processes. Chem Soc Rev 2021; 50:1407-1437. [DOI: 10.1039/d0cs00526f] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This review provides a comprehensive overview on characterisation techniques for light-driven redox-catalysts highlighting spectroscopic, microscopic, electrochemical and spectroelectrochemical approaches.
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Affiliation(s)
- Christine Kranz
- Ulm University
- Institute of Analytical and Bioanalytical Chemistry
- 89081 Ulm
- Germany
| | - Maria Wächtler
- Leibniz Institute of Photonic Technology
- Department Functional Interfaces
- 07745 Jena
- Germany
- Friedrich Schiller University Jena
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91
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Abstract
Photocatalytic deoximation reaction was found to be an autocatalytic process that occurs via free-radical mechanism. Understanding the mechanism may help chemical engineers to develop related techniques to avoid the decomposition of oximes.
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Affiliation(s)
- Hongjia Li
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Xiaobi Jing
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Yaocheng Shi
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
| | - Lei Yu
- School of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- P. R. China
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92
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Lin K, Xiao F, Xie Y, Pan K, Wang L, Zhou W, Fu H. Surface domain heterojunction on rutile TiO 2 for highly efficient photocatalytic hydrogen evolution. NANOSCALE HORIZONS 2020; 5:1596-1602. [PMID: 33063803 DOI: 10.1039/d0nh00491j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Compared with the highly active anatase TiO2, rutile TiO2 usually presents poor photocatalytic performance due to high electron-hole recombination. Herein, we propose a surface domain heterojunction (SDH) structure between adjacent micro-domains with and without chemisorbed chlorine on rutile TiO2, which utilizes the potential difference between these domains to form a built-in field that promotes charge separation. Single-crystal rutile TiO2 nanorods assembled into radial microspheres with SDHs were fabricated, and these exhibited excellent solar-driven photocatalytic hydrogen evolution, ∼8-fold higher than that of the pristine one. Experimental results and density functional theory calculations reveal that the exceptional photocatalytic performance can be attributed to the in situ formation of chemisorbed chlorine, which forms SDHs that separate electrons and holes efficiently and results in surface reconfiguration, exposing the tri-active sites, increasing the O-site active centers and enhancing the catalytic activity of the 4-coordinated (Ti4c) and 5-coordinated Ti sites (Ti5c). This SDH strategy can extend to other halogen elements and thus provides an universal approach for the rational design of high-efficiency TiO2 photocatalysts toward sustainable solar-fuel evolution.
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Affiliation(s)
- Kuo Lin
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Fang Xiao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Ying Xie
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Kai Pan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Lei Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Wei Zhou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
| | - Honggang Fu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
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93
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Deskins NA, Kimmel GA, Petrik NG. Observation of Molecular Hydrogen Produced from Bridging Hydroxyls on Anatase TiO 2(101). J Phys Chem Lett 2020; 11:9289-9297. [PMID: 33090788 DOI: 10.1021/acs.jpclett.0c02735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Anatase TiO2 is used extensively in a wide range of catalytic and photocatalytic processes and is a promising catalyst for hydrogen production. Here, we show that molecular hydrogen was produced from bridging hydroxyls (HOb) on the (101) surface of single-crystal anatase (TiO2(101)). This stands in contrast to rutile TiO2(110), where HOb pairs react to form H2O. Electron bombardment at 30 K produced bridging oxygen vacancies in the surface. Deuterated bridging hydroxyls (DOb) were subsequently formed via dissociation of adsorbed D2O and confirmed by infrared reflection-absorption spectroscopy. During temperature-programmed desorption (TPD) spectroscopy, D2 desorption was observed at 520 K. Density functional theory calculations show that both H2 and H2O production from HOb are endothermic at 0 K on TiO2(101), but H2 (H2O) desorption is entropically driven above 230 K (800 K). The calculated activation barrier for H2 desorption is 1.40 eV, which is similar to the desorption energy obtained from analysis of the D2 TPD spectra. The H2 desorption likely proceeds in two steps: H atom diffusion on the surface and then recombination.
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Affiliation(s)
- N Aaron Deskins
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Greg A Kimmel
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Nikolay G Petrik
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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94
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Cao Y, Xu P, Lv P, Lemstra PJ, Cai X, Yang W, Dong W, Chen M, Liu T, Du M, Ma P. Excellent UV Resistance of Polylactide by Interfacial Stereocomplexation with Double-Shell-Structured TiO 2 Nanohybrids. ACS APPLIED MATERIALS & INTERFACES 2020; 12:49090-49100. [PMID: 33074663 DOI: 10.1021/acsami.0c14423] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The durable application of polylactide (PLA) under atmospheric conditions is restricted by its poor ultraviolet (UV) stability. To improve the UV stability of polymers, titanium dioxide (TiO2) is often used as a UV light capture agent. However, TiO2 is also a photocatalytic agent, with detrimental effects on the polymer properties. To overcome these two conflicting issues, we used the following approach. TiO2 nanoparticles were first coated with silicon dioxide (SiO2) (with a SiO2 shell content of 5.3 wt %). Subsequently, poly(d-lactide) (PDLA) was grafted onto TiO2@SiO2 nanoparticles, approximately 20 wt %, via a ring-opening polymerization of d-lactide to obtain well-designed double-shell TiO2@SiO2-g-PDLA nanohybrids. These double-shell nanoparticles could be well dispersed in a poly(l-lactide) (PLLA) matrix making use of the stereocomplexation between the two enantiomers. In our concept, the inner SiO2 shell on the TiO2 nanoparticles prevents the direct contact between TiO2 and the PLLA matrix and hence considerably restricts the detrimental photocatalytic effect of TiO2 on PLLA degradation. Additionally, the outer PDLA shell facilitates an improved dispersion of these nanohybrid particles by interfacial stereocomplexation with its enantiomer PLLA. As a consequence, the PLLA/TiO2@SiO2-g-PDLA nanocomposites simultaneously possess excellent UV-shielding property, high(er) tensile strength (>60 MPa), and superior UV resistance, for example, the mechanical properties remain at a level of >90% after 72 h of UV irradiation. In our view, this work provides a novel strategy to make advanced PLA nanocomposites with improved mechanical properties and excellent UV resistance, which enables potential application of PLA in more critical areas such as in durable packaging and fiber/textile applications.
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Affiliation(s)
- Ying Cao
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Pengwu Xu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Pei Lv
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Pieter Jan Lemstra
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- PlemPolco B. V., De Zicht 11, HV Veldhoven 5502, The Netherlands
| | - Xiaoxia Cai
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weijun Yang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Mingqing Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Tianxi Liu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Mingliang Du
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Piming Ma
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
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95
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Castillo-Lora J, Delley MF, Laga SM, Mayer JM. Two-Electron-Two-Proton Transfer from Colloidal ZnO and TiO 2 Nanoparticles to Molecular Substrates. J Phys Chem Lett 2020; 11:7687-7691. [PMID: 32838515 DOI: 10.1021/acs.jpclett.0c02359] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Transfers of multiple electrons and protons are challenging yet central to many energy-conversion processes and other chemical and biochemical reactions. Semiconducting oxides can hold multiple redox equivalents. This study describes the 2e-/2H+ transfer reactivity of photoreduced ZnO and TiO2 nanoparticle (NP) colloids with molecular 2e-/2H+ acceptors, to form new O-H, N-H, and C-H bonds. The reaction stoichiometries were monitored by NMR and optical spectroscopies. Faster 2e-/2H+ transfer rates were observed for substrates forming O-H or N-H bonds, presumably due to initial hydrogen bonding at the oxide surface. Chemically reduced ZnO NPs stabilized by Na+ or Ca2+ also engage in 2e-/2H+ transfer reactivity, showing that protons transferred in these processes are inherent to the oxide nanoparticles and do not exclusively stem from photoreduction. These results highlight the potential of ZnO and TiO2 for multiple proton-coupled electron transfer (PCET) reactions.
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Affiliation(s)
- Janelle Castillo-Lora
- Department of Chemistry, Yale University, 255 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Murielle F Delley
- Department of Chemistry, Yale University, 255 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Stephanie M Laga
- Department of Chemistry, Yale University, 255 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - James M Mayer
- Department of Chemistry, Yale University, 255 Prospect Street, New Haven, Connecticut 06520-8107, United States
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96
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Sugiarto, Kazakami S, Kawamoto K, Hayashi Y. Stabilization of titanium(IV) and indium(III) complexes by coordination of [MoO3(1,4,7-triazacyclononane)] metalloligand in aqueous solution. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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97
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Courtois C, Eder M, Kollmannsberger SL, Tschurl M, Walenta CA, Heiz U. Origin of Poisoning in Methanol Photoreforming on TiO2(110): The Importance of Thermal Back-Reaction Steps in Photocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01615] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carla Courtois
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Moritz Eder
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Sebastian L. Kollmannsberger
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Martin Tschurl
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Constantin A. Walenta
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Ueli Heiz
- Chair of Physical Chemistry, Department of Chemistry & Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
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98
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Liu Y, Kang S, Cui L, Ma Z. Boosting near-infrared-driven photocatalytic H2 evolution using protoporphyrin-sensitized g-C3N4. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112517] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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99
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Wu L, Fu C, Huang W. Surface chemistry of TiO 2 connecting thermal catalysis and photocatalysis. Phys Chem Chem Phys 2020; 22:9875-9909. [PMID: 32363360 DOI: 10.1039/c9cp07001j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemical reactions catalyzed under heterogeneous conditions have recently expanded rapidly from traditional thermal catalysis to photocatalysis due to the rising concerns about sustainable development of energy and the environment. Adsorption of reactants on catalyst surfaces, subsequent surface reactions, and desorption of products from catalyst surfaces occur in both thermal catalysis and photocatalysis. TiO2 catalysts are widely used in thermal catalytic and photocatalytic reactions. Herein we review recent progress in surface chemistry, thermal catalysis and photocatalysis of TiO2 model catalysts from single crystals to nanocrystals with the aim of examining if the surface chemistry of TiO2 can bridge the fundamental understanding between thermal catalysis and photocatalysis. Following a brief introduction, the structures of major facets exposed on TiO2 catalysts, including surface reconstructions and defects, as well as the electronic structure and charge properties, are firstly summarized; then the recent progress in adsorption, thermal chemistry and photochemistry of small molecules on TiO2 single crystals and nanocrystals is comprehensively reviewed, focusing on manifesting the structure-(photo)activity relations and the commonalities/differences between thermal catalysis and photocatalysis; and finally concluding remarks and perspectives are given.
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Affiliation(s)
- Longxia Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China.
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100
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Photocatalytic Cleavage of β- O-4 Ether Bonds in Lignin over Ni/TiO 2. Molecules 2020; 25:molecules25092109. [PMID: 32365962 PMCID: PMC7249180 DOI: 10.3390/molecules25092109] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/02/2022] Open
Abstract
It is of great importance to explore the selective hydrogenolysis of β-O-4 linkages, which account for 45–60% of all linkages in native lignin, to produce valued-added chemicals and fuels from biomass employing UV light as catalyst. TiO2 exhibited satisfactory catalytic performances in various photochemical reactions, due to its versatile advantages involving high catalytic activity, low cost and non-toxicity. In this work, 20 wt.% Ni/TiO2 and oxidant PCC (Pyridinium chlorochromate) were employed to promote the cleavage of β-O-4 alcohol to obtain high value chemicals under UV irradiation at room temperature. The Ni/TiO2 photocatalyst can be magnetically recovered and efficiently reused in the following four consecutive recycling tests in the cleavage of β-O-4 ether bond in lignin. Mechanism studies suggested that the oxidation of β-O-4 alcohol to β-O-4 ketone by oxidant PCC first occurred during the reaction, and was followed by the photocatalysis of the obtained β-O-4 ketone to corresponding acetophenone and phenol derivates. Furthermore, the system was tested on a variety of lignin model substrates containing β-O-4 linkage for the generation of fragmentation products in good to excellent results.
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