石墨相氮化碳同质结光催化处理水中双酚A

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Abstract A graphite phase carbon nitride homojunction photocatalyst (x% MeCN-CN) was designed and prepared by methanol assisted solvothermal pre-treatment in this manuscript. The obtained photocatalyst was characterized by TEM, XRD, FTIR, XPS, UV-Vis DRS, PL and EIS. The photocatalytic degradation performance of the catalyst was investigated by using bisphenol A (BPA) as the target pollutant and the reaction mechanism was explored through the active species capture experiment. 30% MeCN-CN has the best photocatalytic performance under simulated sunlight, and the photocatalytic degradation rate of 15mg/L BPA reached 98.9% in 4h, with the holes and superoxide radicals as the main active species. The improvement of photocatalytic activity of catalysts was attributed to the regulation of energy band and the coupling of homogeneous junction structure by alcohol-thermal assisted pretreatment, which effectively inhibited the photogenic electron hole pair recombination and broadened the light absorption range. In addition, the catalyst has excellent stability and recycling ability, and has a good application prospect.

Key words： graphitic carbon nitride homojunction photocatalysis bisphenol A

Received: 19 November 2020

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X703

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	Articles by authors
	WU Tong
	GU Jia-yu
	PENG Chen
	WU Shang-di
	CHEN Huan
	JIANG Fang

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WU Tong,GU Jia-yu,PENG Chen等. Study on photocatalytic degradation of bisphenol A in water by graphite phase carbon nitride homojunction[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(7): 3255-3265.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I7/3255

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