g-C<sub>3</sub>N<sub>4</sub>/泡沫镍整体式光催化剂的构建及光氧化去除NO

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Abstract In this work, g-C₃N₄/M-foam monolithic photocatalyst was prepared via an impregnation method, which metal foam (M-foam, M=Ni, Cu and Fe) works as supporter. Three different monolithic photocatalysts have been studied systematically for the load stability as well as photocatalytic performance, which revealed that Ni-foam is the best candidate for monolithic photocatalyst formation. The g-C₃N₄/Ni-foam monolithic photocatalysts exhibited a 1.8 times higher NO removal ratio than powder g-C₃N₄, indicating the improvement of photocatalytic performance after introduction of Ni-foam. Moreover, by studying the structure, morphology, optical properties and reactive species of g-C₃N₄/Ni-foam, it is found that the enhancement of photocatalytic performance of g-C₃N₄/Ni-foam is mainly attributed to the following two reasons: Firstly, the porous structure of Ni-foam can enlarge the dispersibility and provide more active sites for photocatalytic reaction, enhancing the adsorption capacity and photo-degradation efficiency of NO on the surface of g-C₃N₄; Secondly, the Ni-foam exhibited excellent electron transfer property which can strictly restrict the recombination efficiency of electron-hole pairs. Notably, in this system, superoxide radicals (·O₂^-) and hydroxyl radicals (·OH) were considered to be the main active species for photo-oxidation of NO to NO₃^-under illumination over g-C₃N₄/Ni-foam. This work provide a fresh insight for highly efficient performance and practical application of powder photocatalyst.

Key words： monolithic photocatalyst visible light nitric oxide photo-oxidation

Published: 05 July 2019

CLC number:

TB332

About author:: Tao Ran received his bachelor’s degree from Panzhihua College in 2016, and studied for his master’s degree in Southwest Petroleum University from 2016 to 2019. He has been published one SCI academic paper and applied for two invention patents.Qian Zhang obtained his doctor degree from School of Materials Science and Engineering of Chongqing University in 2011, served as associate professor and master’s supervisor in Southwest Petroleum University till now. His Main research directions are indoor air purification, monolithic catalysis and electrochemistry. Now he is the scientific research backbone of the “Oxidizing Functio-nal Materials and Applications” scientific research and innovation team of Sichuan universities and the “Energy Conversion and Storage of Advanced Materials” scientific and technological innovation team of Sichuan youth. He presided scientific research project of the National Natural Science Foundation, the State Key Laboratory and the Sichuan Education Department. He has published more than ten SCI acade-mic papers and won two national invention patents.

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	RAN Tao
	ZHANG Qian
	LI Bangxin
	LIU Yang
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Cite this article:

RAN Tao,ZHANG Qian,LI Bangxin, et al. Construction of g-C₃N₄/Ni-foam Monolithic Photocatalyst and Removal of NO by Photo-oxidation[J]. Materials Reports, 2019, 33(z1): 337-342.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2019/V33/Iz1/337

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