BiOI/g-C3N4光催化降解甲基橙研究

doi:10.11962/1006-4990.2020-0252

Abstract

Abstract:

Graphite phase carbon nitride（g-C₃N₄） was prepared by thermal polymerization using melamine as precursor.Then bismuth oxyiodide（BiOI） was in-situ generated on its surface to construct BiOI/g-C₃N₄ composite.The catalyst was characterized by X-ray diffraction XRD,fourier transform infrared spectroscopy（FT-IR） and ultraviolet visible diffuse reflectance spectroscopy（UV-Vis-DRS）.The results showed that when the mass-of-substance of BiOI to g-C₃N₄ was 0.5,the catalyst of BiOI/g-C₃N₄ had high dispersion of BiOI particles and moderate band gap and the adsorption and degradation performance of methyl orange was the best.The catalyst of BiOI/g-C₃N₄ prepared at reflux temperature of 120 ℃ had moderate particle size,specific surface area and surface hydroxyl concentration and the best adsorption and degradation performance of methyl orange.In addition,the catalyst had good recyclability.

Key words: BiOI, g-C₃N₄, photocatalysis, methyl orange

CLC Number:

O644.1

Sun Haijie,Liu Xin′gai,Chen Zhihao,Chen Lingxia,Deng Yaru,Mei Yangyang. Study on photocatalytic degradation of methyl orange by BiOI/g-C₃N₄[J]. Inorganic Chemicals Industry, 2021, 53(4): 90-94.

Figures/Tables 9

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Table 1

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References 11

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催化剂	比表面积/（cm²·g^-1）	孔容/（cm³·g^-1）
BiOI/g-C₃N₄（0.5）100	102	0.6
BiOI/g-C₃N₄（0.5）120	86	0.5
BiOI/g-C₃N₄（0.5）140	65	0.3

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Study on photocatalytic degradation of methyl orange by BiOI/g-C₃N₄

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Study on photocatalytic degradation of methyl orange by BiOI/g-C3N4