Facile nitrogen and sulfur deficient engineering on sulfur doped g-C3N4 for efficiently photocatalytic H2 evolution

Li, Jinqiao, Liu, Xiaoteng, Liu, Chunbo, Che, Huinan and Li, Chunxiang (2020) Facile nitrogen and sulfur deficient engineering on sulfur doped g-C3N4 for efficiently photocatalytic H2 evolution. Journal of the Taiwan Institute of Chemical Engineers, 117. pp. 93-102. ISSN 1876-1070

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Abstract

Graphitic carbon nitride (g-C3N4) gets lots of attention as a promising candidate in solar energy conversion. However, the single modification method has limited effectiveness to access highly photocatalytic performance g-C3N4 catalyst. In this work, we present a facile method that can construct nitrogen and sulfur defects in the synthesis process of sulfur-doped g-C3N4. As results, nitrogen and sulfur deficient sulfur-doped g-C3N4 catalyst (SCND-x) integrate the advantages of these two modification methods. SCND-x exhibit a wide light absorption range and an efficient photocarriers separation ability. The optimal sample SCND-3 shows an excellent photocatalytic property with a hydrogen evolution rate of 70.2 μmol h−1 under visible light excitation (λ > 420 nm), which is about 23.4 times better than pristine g-C3N4 (MCN). And the apparent quantum efficiency of SCND-3 is up to 3.3% at 420 nm. In a word, we successfully practice a facile method to prepare high photocatalytic activity catalyst by introducing nitrogen and sulfur defects in sulfur-doped g-C3N4.

Item Type:	Article
Uncontrolled Keywords:	One-step method, Graphitic carbon nitride, Sulfur-doped, Nitrogen defects, Sulfur defects, Photocatalytic hydrogen evolution
Subjects:	F200 Materials Science
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	John Coen
Date Deposited:	07 Jan 2021 10:47
Last Modified:	02 Feb 2021 10:09
URI:	http://nrl.northumbria.ac.uk/id/eprint/45144

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