Two-step alcohothermal synthesis and characterization of enhanced visible-light-active WO3-coated TiO2 heterostructure |
| |
| Affiliation: | 1. Departament d’ Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans, 26, Tarragona 43007, Spain;2. Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Av. Elvas s/n, 06006 Badajoz, Spain;3. Institut de Tècniques Energètiques, Barcelona Research Center in Multiscale Science and Engineering, and Department of Chemical Engineering, Universitat Politécnica de Catalunya, 08019 Barcelona, Spain;4. Repsol Technology Center, Agustín de Betancourt, s/n, 28935 Móstoles, Madrid, Spain;1. Fouman Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43515-1155, Fouman 43516-66456, Iran;2. Department of Chemical Engineering, University of Guilan, Rasht 41996-13776, Iran;1. Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Materials and Earth Science, Technical University of Darmstadt, Darmstadt 64287, Germany;3. School of Advanced Materials and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea;4. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;1. School of Ocean Sciences, China University of Geosciences, Beijing 100083, PR China;2. State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, PR China;3. Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, PR China;1. Universidade Federal de São Carlos, Rod. Washington Luiz, km 235, CEP: 13565-905, São Carlos, SP, Brazil;2. Universidade Federal de Alfenas, Campus Avançado de Poços de Caldas, Rodovia José Aurélio Vilela, n° 11.999, CEP: 37715-400, Poços de Caldas, MG, Brazil;3. Embrapa CNPDIA, Rua XV de Novembro, 1452, CEP: 13560-970, São Carlos, SP, Brazil;1. College of Chemistry and Chemical Engineering, Chongqing University of Technology, 69 Hongguang Rd, Lijiatuo, Banan District, Chongqing, 400054, PR China;2. State Key Laboratory of Advanced Optical Communication and Networks, Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, PR China;3. School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, PR China;4. School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei, 230601, PR China |
| |
| Abstract: | ![]()
A new kind of WO3-coated TiO2 heterostructure with higher photocatalytic activity was prepared via a novel two-step alcohothermal synthesis process. The effects of the WO3 addition on the TiO2/WO3 products were systematically studied, including analysis of the phases, observation of the morphologies and calculation of the band gaps. Under illumination, the conduction band electrons of TiO2 are excited and accompanied by the generation of positive holes. In this heterostructure, the conduction band electrons of WO3 occupy the nearest valence band of TiO2 and then combine with the internal holes, inhibiting the flow of the electrons transferred from the conduction band of TiO2. Compared with anatase TiO2, the WO3-coated TiO2 heterostructure (weight ratio of WO3:TiO2 = 1:2) with a finer grain size exhibits excellent photocatalytic performance. |
| |
| Keywords: | Heterostructure Photocatalytic activity |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
