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A tale of two metal ions: contrasting behaviors of high oxidation states of Cu and Mn in a bicarbonate–H2O2 system
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2020-12-31 , DOI: 10.1039/d0ew00910e Zhiwei Yang 1, 2, 3, 4, 5 , Xiaonan Tan 1, 2, 3, 4 , Daojian Tang 1, 2, 3, 4 , Jing Li 4, 5, 6, 7 , Jiahai Ma 1, 2, 3, 4
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2020-12-31 , DOI: 10.1039/d0ew00910e Zhiwei Yang 1, 2, 3, 4, 5 , Xiaonan Tan 1, 2, 3, 4 , Daojian Tang 1, 2, 3, 4 , Jing Li 4, 5, 6, 7 , Jiahai Ma 1, 2, 3, 4
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In this study, the contrasting activities and pathways of Mn2+/Cu2+–HCO3− systems for Congo red (CR) dye degradation are presented. The Mn2+–HCO3− system (with the well-known MnIV![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
O as the reactive species) did not degrade CR, while the Cu2+–HCO3− system (with high-valent Cu proposed as the reactive species) had a good oxidizing ability for CR. Further, HO radicals in the classic Fenton-like system made no contribution to CR degradation with both Cu and Fe ions as catalysts. The results indicate that reactive species in metal–HCO3− AOPs need prudent examination and better understanding of the underlying mechanism would benefit the development of more efficient AOPs.
中文翻译：
两种金属离子的故事：在碳酸氢盐-H2O2系统中Cu和Mn的高氧化态的对比行为
在这项研究中，对比活动和Mn的途径2+ /铜2+ -HCO 3 -刚果红系统（CR）染料降解给出。中的Mn 2+ -HCO 3 -系统（与公知的Mn IV O作为反应性物质）没有降解CR，而在Cu 2+ -HCO 3 -系统（具有高价的Cu提议作为反应性物质）对CR具有良好的氧化能力。此外，在经典的Fenton类系统中，HO自由基对Cu和Fe离子作为催化剂的CR降解没有贡献。结果表明在金属- HCO该反应性物质3 - AOP需要审慎的检查，对基本机制的更好理解将有利于开发更高效的AOP。
更新日期：2021-01-21
O as the reactive species) did not degrade CR, while the Cu2+–HCO3− system (with high-valent Cu proposed as the reactive species) had a good oxidizing ability for CR. Further, HO radicals in the classic Fenton-like system made no contribution to CR degradation with both Cu and Fe ions as catalysts. The results indicate that reactive species in metal–HCO3− AOPs need prudent examination and better understanding of the underlying mechanism would benefit the development of more efficient AOPs.
中文翻译：
两种金属离子的故事：在碳酸氢盐-H2O2系统中Cu和Mn的高氧化态的对比行为
在这项研究中，对比活动和Mn的途径2+ /铜2+ -HCO 3 -刚果红系统（CR）染料降解给出。中的Mn 2+ -HCO 3 -系统（与公知的Mn IV
O作为反应性物质）没有降解CR，而在Cu 2+ -HCO 3 -系统（具有高价的Cu提议作为反应性物质）对CR具有良好的氧化能力。此外，在经典的Fenton类系统中，HO自由基对Cu和Fe离子作为催化剂的CR降解没有贡献。结果表明在金属- HCO该反应性物质3 - AOP需要审慎的检查，对基本机制的更好理解将有利于开发更高效的AOP。
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