用Fe (III) 激活周期性:周期性度依赖的机械转移
1College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China.
Journal of hazardous materials
|August 20, 2025
概括
酸 (WB) 通过改善Fe (II) 再生来增强铁激活酸 (PI) 过程. 这种共催化剂通过改变基于PI度的反应性物种生成来优化污染物去除,从而提供有效的废水处理策略.
科学领域:
- 环境化学
- 催化剂
- 材料科学
背景情况:
- 污染物降解的铁激活酸盐 (PI) 过程中,Fe (II) 再生和Fe (III) 积累速度缓慢.
- 化 (WB) 被探索为一种共催化剂,以克服氧化反应中的这些限制.
研究的目的:
- 在不同PI度下研究WB/Fe(III) /PI系统对硫醇 (SIZ) 的去除效果.
- 阐明反应物种和反应机制在共催化过程中的作用.
- 评估PI度对污染物选择性和WB的可重复使用性的影响.
主要方法:
- 关于硫醇 (SIZ) 清除效率的实验研究.
- 用于识别反应性物种的定性和半定量测试.
- 在现场进行拉曼特征和电化学试验.
- 密度函数理论 (DFT) 的计算.
主要成果:
- 在低PI度下,通过WB驱动的Fe (III) 减少生成的Fe (IV) 是SIZ快速去除的主要物种.
- 在高PI度下,WB/Fe(III) /PI形成了转移稳定的中间体,促进了污染物氧化过程中的直接电子转移.
- 该系统具有选择性,在低PI度下氧化容易转移的污染物,在高PI度下氧化富电子的污染物.
- 在循环测试中,WB表现出很好的可重复使用性.
结论:
- WB有效地减轻了铁激活周期性过程的局限性.
- PI的度决定了主要的反应物种和氧化途径.
- WB/Fe(III) /PI系统提供了可调节和高效的废水处理方法,WB具有很高的稳定性和可重复使用性.
更多相关视频
08:23Analyzing the Photo-oxidation of 2-propanol at Indoor Air Level Concentrations Using Field Asymmetric Ion Mobility Spectrometry
Published on: June 14, 2018
8.9K
14:17The Portable Chemical Sterilizer PCS, D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military
Published on: June 29, 2014
14.6K
相关概念视频
Masking and Demasking Agents
2.7K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.7K
EDTA: Auxiliary Complexing Reagents
669
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
669
Catalysis
27.5K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
27.5K
Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation
4.3K
Baeyer–Villiger oxidation converts aldehydes to carboxylic acids and ketones to esters. The reaction uses peroxy acids or peracids and is often catalyzed by acid. The reaction is named after its pioneers, Adolf von Baeyer and Victor Villiger. The reaction is achieved by a wide range of peracids such as m-chloroperoxybenzoic acid (mCPBA), perbenzoic acid (C6H5COOOH), peracetic acid (CH3COOOH), hydrogen peroxide (H2O2), and tert-butyl hydroperoxide (t-BuOOH).
The carbonyl center is...
The carbonyl center is...
4.3K
