Preparation and Photocatalytic Properties of g-C3N4/Bi12O17Cl2 Composites

doi:10.11901/1005.3093.2021.234

Chinese Journal of Materials Research

2021, Vol. 35

Issue (12): 911-917 DOI: 10.11901/1005.3093.2021.234

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Preparation and Photocatalytic Properties of g-C₃N₄/Bi₁₂O₁₇Cl₂ Composites

SONG Yuehong¹, DAI Weili¹, XU Hui², ZHAO Jingzhe³(

)

^1.Shangluo University, College of Chemical Engineering and Modern Materials, Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials, Shangluo 726000, China
^2.Nanxian Inspection and Testing Center of Yiyang City in Hunan Province, Yiyang 413000, China
^3.Hunan University, College of Chemistry and Chemical Engineering, Changsha 410082, China

Cite this article:

SONG Yuehong, DAI Weili, XU Hui, ZHAO Jingzhe. Preparation and Photocatalytic Properties of g-C₃N₄/Bi₁₂O₁₇Cl₂ Composites. Chinese Journal of Materials Research, 2021, 35(12): 911-917.

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Abstract

Composites of g-C₃N₄/Bi₁₂O₁₇Cl₂were prepared by a simple liquid phase precipitation method with bismuth nitrate, sodium chloride, sodium hydroxide and graphitic carbon nitride as raw material. The composition and morphology of the prepared composites were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of g-C₃N₄ on the photocatalytic activity of g-C₃N₄/Bi₁₂O₁₇Cl₂ composites were evaluated with Rhodamine B as the simulated pollutant under visible light. The results show that the photocatalytic performance of 2 % g-C₃N₄/Bi₁₂O₁₇Cl₂composite is the best, after 90 min of light exposure the photocatalytic degradation rate of RhB reached 98.64%.

Key words: inorganic nonmetallic materials g-C₃N₄/Bi₁₂O₁₇Cl₂composites photocatalysis RhB photocatalytic mechanism

Received: 15 April 2021

ZTFLH:

O614

Fund: National Natural Science Foundation of China(21571057);Scientific Research Projects of Shangluo University(17SKY018);Key Laboratory Project of Shaanxi Provincial Department of Education(19JS026);Natural Science Basic Research Program of Shaanxi(2019JQ-156)

About author: ZHAO Jingzhe, Tel: (0731)82548686, E-mail: zhaojz@hnu.edu.cn

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	Yuehong SONG
	Weili DAI
	Hui XU
	Jingzhe ZHAO

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https://www.cjmr.org/EN/10.11901/1005.3093.2021.234 OR https://www.cjmr.org/EN/Y2021/V35/I12/911

Fig.1 XRD patterns of the synthetic samples

Fig.2 FT-IR spectra of g-C₃N₄、Bi₁₂O₁₇Cl₂and g-C₃N₄/Bi₁₂O₁₇Cl₂ composites

Fig.3 SEM images of the samples (a) g-C₃N₄; (b) 2% g-C₃N₄/Bi₁₂O₁₇Cl₂; (c) 4% g-C₃N₄/Bi₁₂O₁₇Cl₂; (d) 6% g-C₃N₄/Bi₁₂O₁₇Cl₂; (e) 8% g-C₃N₄/Bi₁₂O₁₇Cl₂; (f) Bi₁₂O₁₇Cl₂

Fig.4 UV-vis diffuse reflectance spectras of g-C₃N₄、Bi₁₂O₁₇Cl₂and g-C₃N₄/Bi₁₂O₁₇Cl₂ composites (a) and (ahv)^1/2-hv curves (b)

Table 1 E_VB、E_CB and E_g values of g-C₃N₄ and Bi₁₂O₁₇Cl₂

Fig.5 g-C₃N₄、Bi₁₂O₁₇Cl₂and g-C₃N₄/Bi₁₂O₁₇Cl₂composites (a) the photodegradation curves of RhB as a function of the irradiation time; (b) the ln(C₀/C)-t curves for RhB degradation, (c) the corresponding reaction kinetics constant (k)

Fig 6 Effects of scavengers on the photodegradation of RhB over g-C₃N₄/Bi₁₂O₁₇Cl₂ composite (a) and the photocatalytic mechanism (b)

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