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Low consumption Fenton-like water purification through pollutants as electron donors substituting H2O2 consumption via twofold cation-π over MoS2 cross-linking g-C3N4 hybrid
Applied Catalysis B: Environment and Energy ( IF 22.1 ) Pub Date : 2022-08-17 , DOI: 10.1016/j.apcatb.2022.121871
Lai Lyu , Chao Lu , Yingtao Sun , Wenrui Cao , Tingting Gao , Chun Hu

A twofold cation-π-assembled catalyst consisting of honeycomb microsphere-like MoS2 cross-linking g-C3N4 hybrid (HM-MS/CN) is first developed to address the bottleneck of excessive resource and energy consumption in Fenton chemistry. A series of modern characterization techniques combined with theoretical calculation are used to reveal and verify the twofold cation-π interaction (Mo-O-C and Mo-S-C bonding bridges). It is found that the electrons of pollutants can be captured by H2O2 and O2 through the twofold cation-π interaction during Fenton-like reaction, which inhibits the oxidative decomposition of H2O2 and promotes its hydroxylation. As a result, HM-MS/CN shows excellent performance for water purification by initiating pollutants as electron donors substituting H2O2 consumption under mild natural conditions, and the actual consumption of H2O2 in this system is only 6–8% of that in the common Fenton systems. This discovery is of great significance for the development of novel water purification technology with high efficiency and low consumption.



中文翻译:

通过污染物作为电子供体的低消耗类 Fenton 水净化通过 MoS2 交联 g-C3N4 杂化物上的双阳离子-π 替代 H2O2 消耗

为了解决芬顿化学中资源和能源消耗过多的瓶颈,首先开发了一种由蜂窝状微球状MoS 2交联gC 3 N 4杂化物(HM-MS/CN)组成的双阳离子-π-组装催化剂。一系列现代表征技术结合理论计算用于揭示和验证双重阳离子-π相互作用(Mo-OC和Mo-SC键桥)。发现污染物的电子可以在类芬顿反应中通过双阳离子-π相互作用被H 2 O 2和O 2捕获,从而抑制H 2 O 2的氧化分解。并促进其羟基化。因此,HM-MS/CN在温和的自然条件下以污染物为电子供体替代H 2 O 2消耗,表现出优异的水净化性能,该系统的H 2 O 2实际消耗仅为6-8%在常见的 Fenton 系统中。这一发现对于开发高效、低耗的新型净水技术具有重要意义。

更新日期:2022-08-17
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