• 文献标题:   Peroxymonosulfate activation by graphene oxide-supported 3D-MoS2/FeCo2O4 sponge for highly efficient organic pollutants degradation
  • 文献类型:   Article
  • 作  者:   HUANG C, LIU H, SUN CY, WANG P, TIAN ZY, CHENG H, HUANG S, YANG X, WANG MX, LIU ZM
  • 作者关键词:   feco2o4, threedimensional, molybdenum disulfide, cocatalysi, peroxymonosulfate
  • 出版物名称:   ENVIRONMENTAL POLLUTION
  • ISSN:   0269-7491 EI 1873-6424
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.envpol.2023.121391 EA MAR 2023
  • 出版年:   2023

▎ 摘  要

To address conventional powder catalysts' recovery and aggregation issues that greatly restrain their practical application, a recoverable graphene oxide (GO)-supported 3D-MoS2/FeCo2O4 sponge (SFCMG) was developed through a simple impregnation pyrolysis method. SFCMG can efficiently activate peroxymonosulfate (PMS) to produce reactive species for rapid degradation of rhodamine B (RhB), with 95.0% and 100% of RhB being removed within 2 min and 10 min, respectively. The presence of GO enhances the electron transfer performance of the sponge, and the three-dimensional melamine sponge serves as a substrate to provide a highly dispersed carrier for FeCo2O4 and MoS2/GO hybrid sheets. SFCMG exhibits a synergistic catalytic effect of Fe and Co, and facilitates the redox cycles of Fe(III)/Fe(II) and Co(III)/Co(II) by MoS2 co-catalysis, which enhances its catalytic activity. Electron paramagnetic resonance results demonstrate that SO4 center dot-, O-center dot(2)- and O-1(2) are all involved in SFCMG/PMS system, and O-1(2) played a prominent role in RhB degradation. The system has good resistance to anions (Cl-, SO42-, and H2PO4-) and humic acid and excellent performance for many typical contaminants degradation. Additionally, it works efficiently over a wide pH range (3-9) and possesses high stability and reusability with the metal leaching far below the safety standards. The present study extends the practical application of metal co-catalysis and offers a promising Fenton-like catalyst for the treatment of organic wastewater.