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Designing 3D‐MoS 2 Sponge as Excellent Cocatalysts in Advanced Oxidation Processes for Pollutant Control
Author(s) -
Zhu Lingli,
Ji Jiahui,
Liu Jun,
Mine Shinya,
Matsuoka Masaya,
Zhang Jinlong,
Xing Mingyang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202006059
Subject(s) - degradation (telecommunications) , environmental remediation , chemistry , adsorption , pollutant , oxide , wastewater , chemical engineering , graphene , environmental chemistry , contamination , environmental science , organic chemistry , environmental engineering , computer science , telecommunications , ecology , engineering , biology
3D‐MoS 2 can adsorb organic molecules and provide multidimensional electron transport pathways, implying a potential application for environment remediation. Here, we study the degradation of aromatic organics in advanced oxidation processes (AOPs) by a 3D‐MoS 2 sponge loaded with MoS 2 nanospheres and graphene oxide (GO). Exposed Mo 4+ active sites on 3D‐MoS 2 can significantly improve the concentration and stability of Fe 2+ in AOPs and keep the Fe 3+ /Fe 2+ in a stable dynamic cycle, thus effectively promoting the activation of H 2 O 2 /peroxymonosulfate (PMS). The degradation rate of organic pollutants in the 3D‐MoS 2 system is about 50 times higher than without cocatalyst. After a 140 L pilot‐scale experiment, it still maintains high efficiency and stable AOPs activity. After 16 days of continuous reaction, the 3D‐MoS 2 achieves a degradation rate of 120 mg L −1 antibiotic wastewater up to 97.87 %. The operating cost of treating a ton of wastewater is only US$ 0.33, suggesting huge industrial applications.