Fabrication of molybdenum doped carbon nitride nanosheets for efficiently photocatalytic water splitting
Fabrication of molybdenum doped carbon nitride nanosheets for efficiently photocatalytic water splitting
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DOI：
10.1016/j.jallcom.2020.156440
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发表时间：
2020-12-30
影响因子：
6.2
通讯作者：
Teng, Weili
中科院分区：
文献类型：
--
作者：
Che, Haibing;Ngaw, Chee Keong;Teng, Weili
太阳能利用对光催化剂的合理设计提出了更高的要求，使其具有高效的分解水性能。本工作采用两步热处理法制备了掺钼图形氮化碳(g-C3N4)。所得产物呈片状，具有多孔结构，其形成机理可归因于热环境中的剥离作用。光催化性能研究表明，Mo掺杂g-C3N4纳米片在可见光下的析氢速率为1.6 mmolg(-1)h(-1)，约为未掺杂g-C3N4的9.4倍。性能的提高归功于其增强的可见光吸收，很好地抑制了载流子复合，并大大增加了比表面积。因此，我们的工作为开发高效的先进可再生能源光催化剂提供了一条很有前途的直接途径。(C)2020爱思唯尔B.V.保留所有权利。
Rational design of photocatalyst with efficient performance in water splitting is highly desired for solar energy utilization. In this work, a simple and facile strategy was developed to synthesize Mo doped graphic carbon nitride (g-C3N4) by a two-step thermal treatment process. As obtained product exhibits sheet-like morphology with porous structure, and the formation mechanism could be ascribed to the exfoliation effect in thermal environment. Photocatalytic property investigation reveals that Mo doped g-C3N4 nanosheets present greatly improved hydrogen evolution rate of 1.6 mmol g(-1) h(-1) under visible light, which is about 9.4 times higher than that of pristine g-C3N4. The improved performance could be well attributed to its enhanced visible light absorption, well suppressed carrier recombination and greatly increased specific surface area. Accordingly, our work provides a promising and straight forward way to develop advanced photocatalyst with high efficiency for renewable energy generation. (C) 2020 Elsevier B.V. All rights reserved.