脯氨酸掺杂g-C<sub>3</sub>N<sub>4</sub>纳米片的制备及其对RhB的降解

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Abstract Proline doped g-C₃N₄ nanosheets were successfully prepared by a feasible hydrothermal and calcination approach. Properties of the photocatalysts, including structure, morphology, composition and photoelectric characteristics, were systematically analyzed by FTIR, XRD, SEM, BET, XPS, UV-vis DRS, PL, and Electrochemical workstation. The results showed that the addition of proline could autonomously exfoliate the precursors to make nanosheets of g-C₃N₄ and increase the specific surface area of the catalysts. Furthermore, the energy band structure of the catalysts, visible light absorption ability, and the separation rate photogenerated carriers of as-prepared g-C₃N₄ were remarkably improved. The photocatalytic performance was investigated by degradation of Rhodamine B under simulated visible light irradiation. The optimal doping conditions was herein obtained. At 1% addition amount of doped proline (PCN-1%), over 99% pollutants could be degraded under 60min irradiation of visible light. The degradation rate of PCN-1% (0.0271min^-1) was 10.04 times compared with that of the traditional bulk carbon nitride (BCN, 0.0027min^-1), evidencing the notably improved photocatalysis properties of g-C₃N₄.

Key words： proline doping g-C₃N₄ nanosheets photocatalysis

Received: 29 December 2021

PACS:

X703.1

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	Articles by authors
	JIANG Jun
	NI Qian-qian
	KE Xin
	YAN Zheng

Cite this article:

JIANG Jun,NI Qian-qian,KE Xin等. Preparation of g-C₃N₄ nanosheets doped with proline and its degradation of RhB[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(7): 3112-3120.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I7/3112

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