光助MIL-101(Fe)活化过氧化氢氧化洛克沙胂及同步吸附生成的砷酸根

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Abstract An iron-based-organic framework (MIL-101(Fe)) was prepared using a simple one-pot method, aiming to simultaneously oxidize ROX through activating hydrogen peroxide and adsorption formed arsenate under simulated sunlight. The photoassisted MIL-101(Fe) (250mg/L) activating H₂O₂ (1.0mmol/L) system could remove 95.27% of ROX within 120min. Moreover, the arsenate (As(Ⅴ)) formed in this system could be adsorbed onto the surface of MIL-101(Fe) with 84.14% of the total arsenic removal ratio. The main formed reactive oxygen species ·OH and O₂^·– free radicals, attacked the As-C bond of ROX, generated As(Ⅴ) and o-nitrophenol compounds and accelerated the removal process. The actual environment water matrix significantly promoted the removal ratio of ROX in this system.

Key words： roxarsone Fe-based metal-organic framework hydrogen peroxide adsorption

Received: 20 May 2021

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X52

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	Articles by authors
	SANG Lin-feng
	SU Shan-shan
	GAO Zi-wei
	JIN Wei
	ZHAO Ya-ping

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SANG Lin-feng,SU Shan-shan,GAO Zi-wei等. Photoassisted MIL-101(Fe) activated hydrogen peroxide system for oxidative degradation of roxarsone and adsorption of in-situ formed arsenate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(1): 203-212.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I1/203

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