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.
| Translated title of the contribution | Photoassisted MIL-101(Fe) activated hydrogen peroxide system for oxidative degradation of roxarsone and adsorption of in-situ formed arsenate |
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| Original language | Chinese (Traditional) |
| Pages (from-to) | 203-212 |
| Number of pages | 10 |
| Journal | Zhongguo Huanjing Kexue/China Environmental Science |
| Volume | 42 |
| Issue number | 1 |
| State | Published - 20 Jan 2022 |