Carbon intercalated MoS2 cocatalyst on g-C3N4 photo-absorber for enhanced photocatalytic H2 evolution under the simulated solar light |
| |
| Affiliation: | 1. School of Materials and Energy, Lanzhou University, Lanzhou 730000, China;2. School of Physics and Electronic Information Engineering, Qinghai Normal University, Qinghai 810004, China;3. Academy of Plateau Science and Sustainability People''s Government of Qinghai Province & Beijing Normal University, People''s Government of Qinghai Province, Qinghai 810004, China;4. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemicals Physics, Chinese Academy of Sciences, Lanzhou 730000, China;1. Purification Equipment Research Institute of CSIC, Handan 056027, Hebei province, People''s Republic of China;2. Institute of Nuclear and New Energy Technology, MOST-USDA Joint Research Centre for Biofuels, Beijing Engineering Research Center for Biofuels, Tsinghua University, Beijing, People''s Republic of China;1. School of Automotive Studies, Tongji University, Shanghai 201804, China;2. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;3. School of Information Management & Engineering, Shanghai University of Finance and Economics, Shanghai, 200433, China;1. Departamento de Electricidad, Universidad Tecnológica Metropolitana, Santiago 7750000, Chile;2. Instituto de Investigacion Multidisciplinario en Ciencia y Tecnologia, Universidad de La Serena, La Serena 1720170, Chile;1. School of Energy and Materials, Shanghai Polytechnic University, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai 201209, China;2. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China;3. College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China;4. School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China;5. Department of Materials Science and Engineering, Drexel University, Philadelphia 19104, USA |
| |
| Abstract: | Despite MoS2 being a promising non-precious-metal cocatalyst, poor electronic conductivity and low activity for hydrogen evolution caused by serious agglomeration have been identified as critical roadblocks to further developing MoS2 cocatalyst for photocatalytic water splitting using solar energy. In this work, the density functional theory calculations reveal that carbon intercalated MoS2 (C-MoS2) has excellent electronic transport properties and could effectively improve catalytic activity. The experiment results show that the prepared tremella-like C-MoS2 nanoparticles have large interlayer spacing along the c-axis direction and high dispersion because of intercalation of the carbon between adjacent MoS2 layers. Furthermore, the heterostructure photocatalyst of C-MoS2@g-C3N4 formed by loading the cocatalyst of C-MoS2 onto g-C3N4 nanosheets exhibits the H2 evolution rate of 157.14 μmolg?1h?1 when containing 5 wt% C-MoS2. The high photocatalytic H2 production activity of the 5 wt% C-MoS2@g-C3N4 can be attributed to the intercalated conductive carbon layers in MoS2, which leads to efficient charge separation and transfer as well as increased activities of the edge S atoms for H2 evolution. We believe that the C-MoS2 will offer great potential as a photocatalytic H2 evolution reaction cocatalyst with high efficiency and low cost. |
| |
| Keywords: | Photocatalysis Carbon intercalated molybdenum disulfide Electronic conductivity Catalytic activity Graphite carbon nitride |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
