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氧化碳纳米管具有双重活性基因,通过三电子氧降解来增强OH形成

Jiayu Zhang¹, Shan Qiu¹, Fengxia Deng¹

¹State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.

Journal of hazardous materials

|December 27, 2023

概括

一种新的无金属电-芬顿工艺利用氧化碳纳米管 (OCNT) 来降解有机污染物. 这种环保方法通过产生没有金属催化剂的基激素来有效地去除硫.

科学领域:

环境化学环境化学
材料科学材料科学材料科学

背景情况:

电-芬顿 (EF) 工艺对于污染物降解是有效的,但通常依赖于铁催化剂,造成金属溶解的风险.
开发无金属替代品对于可持续的废水处理至关重要.

研究的目的:

建立一种无金属的电-芬顿工艺,使用氧化碳纳米管 (OCNT) 作为双功能阴极.
使用这种新的系统,研究有机污染物的降解,特别是硫酸 (STZ).

主要方法:

制造OCNT作为电-芬顿工艺的无金属阴极.
通过氧降解反应 (ORR) 电化学生成过氧化 (H2O2).
在OCNT上使用双活性位点将H2O2激活成基 (•OH),用于污染物降解.

主要成果:

OCNT阴极实现了显著的H2O2积累 (12 mg L-1 cm-1).
硫酸 (STZ) 在180分钟内以97.05%的效率降解,其动力速率为0.0189分钟-1.1.
确定了OCNT上的双活性位点,包括-COOH,缺陷和-CO组,负责H2O2的产生和激活.

结论:

使用OCNT阴极的无金属EF系统在降解STZ等有机污染物方面表现出高效率.
OCNT作为一个双功能催化剂,使H2O2产生和激活无需外部金属催化剂.
这种方法显示出可持续处理抗生素废水的巨大潜力.

关键词:

炭基组是碳基组的一个组成部分.H(2) O(2) 的生产生产.氧降解反应是氧降解反应.用氧气添加的碳纳米管.

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