Surface oxygen vacancy facilitated Z-scheme MoS2/Bi2O3 heterojunction for enhanced visible-light driven photocatalysis-pollutant degradation and hydrogen production |
| |
| Affiliation: | 1. Department of Biotechnology, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;2. Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;3. Department of Instrumentation, Sri Venkateswara University, Tirupati, 517 502, India;4. School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea;5. Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, Viet Nam;6. The Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Viet Nam;1. Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, A.P. 70-186, Delegación Coyoacán, C.P. 04510, Cd. Mx. México;2. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, A. P. 70-360, Coyoacán, C.P. 04510, Cd. Mx. México;1. Post Graduate Teaching Department of Chemistry, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur-440033, India;2. Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee-441001, India;3. Research and Development Division, Apple Chemie India Private Limited, Nagpur-441108, India;4. Post Graduate Department of Microbiology, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee-441001, India;1. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, PR China;2. College of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou, Jiangsu, 225127, PR China;1. Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, China;2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
| |
| Abstract: | An oxygen-vacancy rich, bismuth oxide (Bi2O3) based MoS2/Bi2O3 Z-scheme heterojunction catalyst (2-BO-MS) was prepared in an autoclave hydrothermal method using ethanol and water. The performance of MoS2/Bi2O3 catalyst was examined for photocatalytic hydrogen evolution, photoelectrochemical activity, and crystal violet (CV) dye degradation by comparing with pristine Bi2O3 and MoS2. The hydrogen evolution performances of 2-BO-MS catalyst exhibited 3075.21 μmol g−1 h−1, which is 7.18 times higher than that of MoS2 (428.14 μmol g−1 h−1). The XPS, XRD and HRTEM analyses covered that the superior photocatalytic performance of 2-BO-MS catalyst might have stemmed out due to the existence of oxygen vacancies, enhanced strong interfacial interaction between MoS2 and Bi2O3 and specific surface area. The in-depth investigation has been performed for MoS2/Bi2O3 Z-scheme heterojunction using several characterization techniques. Moreover, the photocatalytic mechanism for hydrogen evolution and photodegradation were proposed based on trapping experiment results. This results acquired using MoS2/Bi2O3 Z-scheme heterojunction would be stepping stone for developing heterojunction catalyst towards attaining outstanding photocatalytic activity. |
| |
| Keywords: | Layered material Nanocomposite Solar energy Z-Scheme |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
