磷酸银/类石墨氮化碳-硅藻土复合材料的制备及可见光催化性能

doi:10.11896/cldb.18090125

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Abstract Aseries of silver phosphate/graphite carbon nitride-diatomite composites were prepared through a impregnation-roasting-deposition method. Their structure, morphology and light absorption properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis-DRS). The photocatalytic activities and stability of samples were evaluated by degradation of Rhodamine B (RhB) under visible light irradiation. The results show that the as-prepared silver phosphate/graphite carbon nitride-diatomite composites exhibits excellent photocatalytic activity compared to silver phosphate/graphite carbon nitride, silver phosphate, and graphite carbon nitride, respectively. Besides, the effect of silver phosphate content on photocatalytic activity was systematically studied. The ca-talyst A/CD_8/2 was found to exhibit the highest photocatalytic activity. The degradation rate of the A/CD_8/2 to Rhodamine B was as high as 98.61% under the irradiation of visible light for 21 min. The degradation rate of the A/CD_8/2 is 95% after recycling for three times, showing good stability and reusability. The improvement of photocatalytic activity was mainly attributed to the efficient separation of photogenerated electron-hole pairs in the silver phosphate/graphite carbon nitride-diatomite composites and the synergistic effect of adsorption/photocatalysis.

Key words： silver orthophosphate graphite carbon nitride diatomite visible-light photocatalysis

Published: 29 August 2019

CLC number:

TB34

About author:: Haibo Fanis now a postgraduate student of Anhui Jianzhu university. He obtained his bachelor of engineering degree from Anhui Jianzhu University from September 2010 to July 2014. So far, he has published one paper in domestic and foreign academic journals and obtained one invention patent.Yi Dingis a professor and master’s tutor of Anhui Jianzhu University. He has been teaching at Anhui Jianzhu University since 2007, when he earned a Ph.D. and graduated from China University of Science and Technology. He has presided over 7 provincial and mi-nisterial projects including the National Natural Science Foundation and the 12th Five-Year Science and Technology Support Project. He won 2 second prizes of Anhui Science and Technology Progress Award, 1 first prize of Hefei Science and Technology Progress Award, and national petro-leum and chemistry, 1 third prize of the Industrial Federation, 1 first prize of China Railway Corporation. He has published more than 20 journal papers, applied 12 national invention patents and 4 of them were authorized. The research direction is building energy-saving materials, resource utilization of solid waste, synthesis and preparation of inorganic materials.

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	FAN Haibo
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	CAO Jingyu
	JIN Zhen
	DING Yi

Cite this article:

FAN Haibo,REN Qifang,YU Miao, et al. Preparation and Visible-light Photocatalytic Properties of Silver Orthophosphate/Graphite Carbon Nitride-Diatomite Composites[J]. Materials Reports, 2019, 33(20): 3383-3389.

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http://www.mater-rep.com/EN/10.11896/cldb.18090125 OR http://www.mater-rep.com/EN/Y2019/V33/I20/3383

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