Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 6, Pages 5801-5807Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05374
Keywords
template-free; g-C3N4 nanosheets; porous network; S-doping; hydrogen evolution
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Funding
- National Natural Science Foundation of China [31800495]
- Natural Science Foundation of the Higher Educations Institutions of Jiangsu Province [17KJB430014]
- Natural Science Foundation of Jiangsu Province [BK20181040]
- Key University Science Research Project of Jiangsu Province [16KJA430007]
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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 H-2 evolution rate 5.3 and 3.8 times enhanced compare with bulk g-C3N4 (BCN) and S-doped g-C3N4 (CNS).
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