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Template-Free One-Step Synthesis of g-C3N4 Nanosheets with Simultaneous Porous Network and S-Doping for Remarkable Visible-Light-Driven Hydrogen Evolution
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-02-12 00:00:00 , DOI: 10.1021/acssuschemeng.8b05374 Yue Zhou 1 , Wenhua Lv 1 , Binglong Zhu 1 , Fei Tong 1 , Junli Pan 1 , Jirong Bai 2 , Quanfa Zhou 1 , Hengfei Qin 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-02-12 00:00:00 , DOI: 10.1021/acssuschemeng.8b05374 Yue Zhou 1 , Wenhua Lv 1 , Binglong Zhu 1 , Fei Tong 1 , Junli Pan 1 , Jirong Bai 2 , Quanfa Zhou 1 , Hengfei Qin 1
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Graphitic carbon nitride (g-C3N4) has been widely studied as a fascinating visible-light-response two-dimensional semiconductor photocatalyst. Nevertheless, the quantum yield of g-C3N4 is unsatisfactory due to the insufficient surface reactive sites and slow charge migration efficiency caused by grievous agglomeration and large grain size. Herein this obstacle is overcome through a facile eco-friendly strategy based on effects from a bubble template and nonmetal heteroatom doping of g-C3N4. This treatment not only restricts the agglomeration but also creates more surface active sites for reaction and more porous channels for charge carrier transfer. Well-amended g-C3N4 nanosheets with porous network and sulfur-doping were prepared with larger specific surface areas and faster electron–hole migration and separation capacity. The modified g-C3N4 nanosheets possessed a H2 evolution rate 5.3 and 3.8 times enhanced compare with bulk g-C3N4 (BCN) and S-doped g-C3N4 (CNS).
中文翻译：
同时进行多孔网络和S掺杂的无模板gC 3 N 4纳米片的无模板一步合成，用于显着可见光驱动氢的释放
图形化的氮化碳（gC 3 N 4）作为引人入胜的可见光响应二维半导体光催化剂已经得到了广泛的研究。然而，由于剧烈的团聚和大晶粒尺寸导致的表面反应位点不足和电荷迁移效率低，gC 3 N 4的量子产率仍然不能令人满意。在此，通过基于气泡模板和gC 3 N 4的非金属杂原子掺杂的效应，通过简便的环保策略克服了这一障碍。这种处理不仅限制了团聚，而且还为反应创建了更多的表面活性位点，并为电荷载流子转移提供了更多的多孔通道。精心修改的gC 3制备了具有多孔网络和硫掺杂的N 4纳米片，具有更大的比表面积和更快的电子-空穴迁移和分离能力。改性的gC 3 N 4纳米片材的H 2析出速率比块状gC 3 N 4（BCN）和S掺杂gC 3 N 4（CNS）增强了5.3和3.8倍。
更新日期：2019-02-12
中文翻译：
同时进行多孔网络和S掺杂的无模板gC 3 N 4纳米片的无模板一步合成，用于显着可见光驱动氢的释放
图形化的氮化碳（gC 3 N 4）作为引人入胜的可见光响应二维半导体光催化剂已经得到了广泛的研究。然而，由于剧烈的团聚和大晶粒尺寸导致的表面反应位点不足和电荷迁移效率低，gC 3 N 4的量子产率仍然不能令人满意。在此，通过基于气泡模板和gC 3 N 4的非金属杂原子掺杂的效应，通过简便的环保策略克服了这一障碍。这种处理不仅限制了团聚，而且还为反应创建了更多的表面活性位点，并为电荷载流子转移提供了更多的多孔通道。精心修改的gC 3制备了具有多孔网络和硫掺杂的N 4纳米片，具有更大的比表面积和更快的电子-空穴迁移和分离能力。改性的gC 3 N 4纳米片材的H 2析出速率比块状gC 3 N 4（BCN）和S掺杂gC 3 N 4（CNS）增强了5.3和3.8倍。
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