Journal
ENVIRONMENT INTERNATIONAL
Volume 126, Issue -, Pages 289-297Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envint.2019.02.030
Keywords
g-C3N4; Active functional groups; Porous; Trade-off; Photocatalytic
Categories
Funding
- National Natural Science Foundation of China [61604110, 51802234]
- Natural Science Foundation of Hubei Province, China [2018CFC796, 2017CFC829, 2017CFB291]
- Department of Education Science Research Program of Hubei Province [Q20161110]
- Open Foundation of Key Laboratory of Green Chemical Process (Wuhan Institute of Technology), Ministry of Education [NRGCT201503]
- Training Programs of Innovation and Entrepreneurship for Undergraduates of Province [201510488022]
- Guidance project of scientific research plan of Hubei Provincial Department of Education [B2017014]
- Key Projects of Scientific Research Program of Hubei Provincial Department of Education [D20171505]
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Owing to insufficient active sites, strongly bound excitons and insufficient optical absorption, polymer semiconductors have only shown mild activity as potential candidates for photocatalysis. A g-C3N4 with improved optical absorption capacity, charge transfer performance and porosity was successfully prepared by a one-step NH4Cl-assisted route. Interaction of melamine with NH4Cl preparation of Porous g-C3N4(CN-xy) with active functional groups modified pore wall shown to result in highly crystalline species with a maximum pi-pi layer stacking distance of heptazine units of 0.321 nm, decreases the optical band gap from 2.80 to 2.13 eV and maximum surface area reached 56.485 m(2) g(-1). The balanced improvement of the multiple defects of g-C3N4 makes the photocatalytic degradation of RhB and the photocatalytic hydrogen production efficiency 4 and 5 times higher than the pristine g-C3N4, respectively.
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