| Title | Sustainable synthesis of low-cost nitrogen-doped-carbon coated Co3W3C@g-C3N4 composite photocatalyst for efficient hydrogen evolution |
| Authors | Zhou, Xunfu Luo, Jin Jin, Bei Wu, Zhijun Yang, Siyuan Zhang, Shengsen Tian, Yuhui Fang, Yueping Hou, Yanglong Zhou, Xiaosong |
| Affiliation | Lingnan Normal Univ, Sch Chem & Chem Engn, Key Lab Clean Energy Mat Chem Guangdong Higher Ed, Zhanjiang 524048, Guangdong, Peoples R China South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy Minist Educ, 483 Wushan Rd, Guangzhou 510642, Peoples R China Peking Univ, Sch Mat Sci & Engn, Beijing 100871, Peoples R China Griffith Univ, Sch Environm & Sci, Gold Coast Campus, Griffith, Qld 4222, Australia |
| Keywords | G-C3N4 PHOTOCATALYST H-2 PRODUCTION NITRIDE WATER NANOPARTICLES COCATALYST GENERATION NANOSHEETS ELECTROCATALYST HETEROJUNCTIONS |
| Issue Date | 15-Dec-2021 |
| Publisher | CHEMICAL ENGINEERING JOURNAL |
| Abstract | The availability of low-cost noble-metal-free photocatalyst is vital for sustainable and large-scale hydrogen production. Herein, N-doped-carbon coated Co3W3C nanocrystallines (NC-Co3W3C), a novel cocatalyst, are anchored onto g-C3N4, forming a (NC-Co3W3C@g-C3N4) composite photocatalyst for application in photocatalytic hydrogen evolution reaction (HER). Under visible light irradiation, NC-Co3W3C@g-C3N4 photocatalyst shows a remarkable photocatalytic HER rate of 1332 mu mol h-1 g-1, achieving 148 times higher than pristine gC3N4 photocatalyst and 89.22% as high as Pt/g-C3N4 photocatalyst (the expensive noble-metal-based catalyst). The mechanism investigation via systematic experimental and theoretical analysis (Density Functional Theory (DFT) calculation) suggests that the high photocatalytic efficiency could be attributed to boosted light absorption and accelerated HER kinetic that is resulted from the enhanced conducitity, reinforced stability, and the suitable H adsorption free energy introduced by the cocatalyst. This work suggests the construction of highly efficient catalyst for photocatalytic hydrogen evolution is chemically and economically viable for the green hydrogen economy. |
| URI | http://hdl.handle.net/20.500.11897/631297 |
| ISSN | 1385-8947 |
| DOI | 10.1016/j.cej.2021.131208 |
| Indexed | SCI(E) |
| Appears in Collections: | 数学科学学院 |
