在具有微弱氮空位的多孔磷和钼共掺杂石墨相氮化碳光催化剂上实现高效可见光驱动析氢和六价铬还原
Efficient visible-light-driven hydrogen evolution and Cr(VI) reduction over porous P and Mo co-doped g-CN with feeble N vacancies photocatalyst.
作者信息
Chen Dongdong, Liu Junguang, Jia Zhenzhen, Fang Jianzhang, Yang Fan, Tang Yiming, Wu Kun, Liu Zhang, Fang ZhanQiang
机构信息
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China.
出版信息
J Hazard Mater. 2019 Jan 5;361:294-304. doi: 10.1016/j.jhazmat.2018.09.006. Epub 2018 Sep 5.
Developing highly efficient and inexpensive photocatalysts without noble metals, yet remarkably enhancing hydrogen production and Cr(VI) reduction activity, is highly needed. Here, the effective photocatalytic H evolution under visible light from an Eosin Y (EY)-sensitized (P, Mo)-g-CN system by avoiding any noble metal co-catalyst is reported by the first time. Meanwhile, the optimized sample also displays the excellent performance in photocatalytic hexavalent chromium (Cr(VI)) reduction. In addition, this composite exhibits delectable stability for photocatalytic activities, no significant decay of activity is being observed after 16h reaction for photocatalytic H evolution (8h for Cr(VI) reduction). It is believed that this work will open up a new route for fabricating high-performance and inexpensive photocatalysts for hydrogen production and Cr(VI) reduction.
迫切需要开发出高效且廉价的不含贵金属的光催化剂，同时能显著提高产氢和还原Cr(VI)的活性。在此，首次报道了通过避免使用任何贵金属助催化剂，在可见光下由曙红Y（EY）敏化的（P，Mo）-g-CN体系实现有效的光催化析氢。同时，优化后的样品在光催化还原六价铬（Cr(VI)）方面也表现出优异的性能。此外，这种复合材料在光催化活性方面表现出令人满意的稳定性，在光催化析氢反应16小时（Cr(VI)还原反应8小时）后未观察到活性有明显衰减。相信这项工作将为制备用于产氢和Cr(VI)还原的高性能且廉价的光催化剂开辟一条新途径。
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