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在异质的芬顿式反应中,矿化与聚合途径对比
Qiming Zhang1, Yanhua Peng2, Yu Peng1
1Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
Water research
|December 15, 2023
概括
石墨通过改善铁循环和激活过氧化物来增强芬顿式的水净化. 这种绿色催化剂可以通过定制的反应途径对像双A这样的污染物进行受控的氧化.
科学领域:
- 环境化学环境化学
- 催化剂是一种催化剂.
- 水处理 处理水的方法
背景情况:
- 芬顿反应对于净化水是有效的,但由于不高效的铁循环而受到限制.
- 石墨 (GP) 被探索为一种绿色催化剂,以克服Fenton类过程中的这些局限性.
研究的目的:
- 调查石墨在加速芬顿式反应 (H2O2/Fe3+和硫酸盐/Fe3+) 中的作用.
- 了解石墨如何促进铁离子减少和各种过氧化物激活通路.
- 通过工程石墨的表面功能来实现按需的选择性和氧化能力.
主要方法:
- 在与过氧化 (H2O2) 和酸盐 (PDS / PMS) 的芬顿式反应中利用石墨作为催化剂.
- 具有特征的铁-石墨相互作用,包括炭基定 (GP-COOFe(III)) 和还原中间体形成 (GP-COFe(II)).
- 分析了不同的氧化途径:激素生成,高价值铁 (Fe ((IV)) 形成和电子转移途径 (ETP).
主要成果:
- 石墨定了铁离子,促进了硫酸盐的吸附和电子转移.
- 石墨结合的铁通过不同的机制激活了H2O2,PDS和PMS,产生了基或Fe (IV).
- 实现了双A (BPA) 的受控氧化:通过激素矿化,通过Fe (IV) 进行部分氧化,并通过ETP实现聚合.
结论:
- 石墨在芬顿式系统中起到有效的绿色催化剂的作用,增强铁循环和过氧化物激活.
- 石墨的表面功能化和过氧化物的选择允许可调节的氧化途径和污染物降解.
- 这种方法为选择性和高效的水净化提供了一个有希望的策略.
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