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Metal-free carbon materials-catalyzed sulfate radical-based advanced oxidation processes: A review on heterogeneous catalysts and applications
Chemosphere ( IF 8.8 ) Pub Date : 2017-09-13 , DOI: 10.1016/j.chemosphere.2017.09.042
Qingxia Zhao , Qiming Mao , Yaoyu Zhou , Jianhong Wei , Xiaocheng Liu , Junying Yang , Lin Luo , Jiachao Zhang , Hong Chen , Hongbo Chen , Lin Tang

In recent years, advanced oxidation processes (AOPs), especially sulfate radical based AOPs have been widely used in various fields of wastewater treatment due to their capability and adaptability in decontamination. Recently, metal-free carbon materials catalysts in sulfate radical production has been more and more concerned because these materials have been demonstrated to be promising alternatives to conventional metal-based catalysts, but the review of metal-free catalysts is rare. The present review outlines the current state of knowledge on the generation of sulfate radical using metal-free catalysts including carbon nanotubes, graphene, mesoporous carbon, activated carbon, activated carbon fiber, nanodiamond. The mechanism such as the radical pathway and non-radical pathway, and factors influencing of the activation of sulfate radical was also be revealed. Knowledge gaps and research needs have been identified, which include the perspectives on challenges related to metal-free catalyst, heterogeneous metal-free catalyst/persulfate systems and their potential in practical environmental remediation.

中文翻译:

无金属碳材料催化的硫酸根基高级氧化工艺:多相催化剂及其应用综述

近年来,先进的氧化工艺(AOP),特别是硫酸根基AOP由于其净化能力和适应性强,已广泛用于废水处理的各个领域。近来,硫酸根自由基生产中的无金属碳材料催化剂受到越来越多的关注,因为已证明这些材料是常规金属基催化剂的有前途的替代品,但是对无金属催化剂的评论很少。本综述概述了使用无金属催化剂(包括碳纳米管,石墨烯,中孔碳,活性炭,活性炭纤维,纳米金刚石)生成硫酸根的最新知识。自由基途径和非自由基途径等机制,并揭示了影响硫酸根自由基活化的因素。已经确定了知识差距和研究需求,其中包括对与无金属催化剂,多相无金属催化剂/过硫酸盐体系有关的挑战及其在实际环境修复中的潜力的观点。
更新日期:2017-09-14
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