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acidification and bubble template derived porous g-C_(3)N_(4) for efficient photodegradation and hydrogen evolution

Chinese Chemical Letters 2020年第10期31卷 2668-2672页

作者： Yixuan Wang Fengting He Lin Chen Jie Shang Jiajia Wang Shuaijun Wang Huimin Song Jinqiang Zhang Chaocheng Zhao Shaobin Wang Hongqi Sun State Key Laboratory of Petroleum Pollution Control China University of Petroleum(East China)Qingdao 266580China School of Engineering Edith Cowan University270 Joondalup DrivePerth WA 6027Australia China General Nuclear Power Hongda Environmental Science and Technology Co. Ltd.Jinan 250000China Dongying Municipal Bureau of Marine Development and Fisheries Dongying Municipal Marine and Fishery Environmental Monitoring CenterDongying 257091China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide SA 5005Australia

Graphitic carbon nitride(g-C_(3)N_(4))as a metal-free candidate of photocatalyst has received worldwide attention because of its great potentials in solar light-induced degradation and hydrogen evolution,yet the industrial application is seriously hindered by the small specific surface area and rapid recombination rate of ***,we demonstrate that porous g-C_(3)N_(4)(HCl-CNU-X)can be prepared via the copolymerization of acidified melamine and a green bubble template(urea).Transmission electron microscopy and nitrogen sorption characterization results show that the prepared HCl-CNU-X possesses an in-plane porous structure and large specific surface area,enabling the exposure of more accessible active *** a result,HCl-CNU-X exhibits both enhanced photocatalytic tetracycline hydrochloride degradation and higher hydrogen evolution than bulk g-C_(3)N_(4).The boosted photocatalytic performance was ascribed to the formation of the porous structure,which dramatically promotes the separation of charge-carriers and facilitates the electron *** work demonstrates that the acidification of nitrogen-rich precursors combined with a bubble-template can develop a new paradigm of highly porous photocatalysts for environmental remediation and water splitting.

关键词： g-C_(3)N_(4) Porous structure Tetracycline hydrochloride Hydrogen evolution acidification and bubble template Visible light

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