화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.108, 254-262, April, 2022
DOI10.1016/j.jiec.2022.01.007  Export Citation
Macroscopic Zn-doped a-Fe2O3/graphene aerogel mediated persulfate activation for heterogeneous catalytic degradation of sulfamonomethoxine wastewater
Shuying Dong†, Xuanxuan Yan, Wenli Li, Yafei Liu, Xiaoxu Han1, Xiaodan Liu, Jinglan Feng, Chongfei Yu, Chunyan Zhang, and Jianhui Sun†
  • School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
  • 1Oil & Gas Production Technical Service Center of Henan Oilfield Company, Nanyang, Henan 473132, PR China
E-mail:,
In order to obtain a robust, durable and efficient heterogeneous catalyst, macroscopic monolithic Zndoped a-Fe2O3/graphene aerogel (GA) hybrid architecture with integrated morphology and hierarchically porous structure were controllably synthesized via a facile in-situ hydrothermal method and then used as persulfate (PS) activator for sulfamonomethoxine (SMM) wastewater purification. Several key reaction parameters including the initial SMM concentration, reaction temperature, coexisting inorganic anions and SMM in real natural water samples had different influence on the SMM removal efficiency. The catalytic efficiency of Zn-doped a-Fe2O3/GA with the molar ratio of Fe/Zn = 2:1.5 was about 66%, 62%, 66% and 11%~33% higher than that of GA, a-Fe2O3/GA, Zn/GA and other Fe/Zn molar ratio. The improved activity of Fe/Zn = 2:1.5 benefits from the synergistic effects of the sp2 hybridized carbon and porous framework, as well as the surface oxygenic functional groups, which accelerate the pollutant/oxidant dispersion and electron transfer. Electron paramagnetic resonance results indicate that .OH, 1O2 and SO4.-radicals account for the catalytic degradation of SMM and the activation of PS in present system is different from conventional homogeneous systems, and speculate mechanism was proposed based on the obtained data.
Keywords:Zn-doped;a-Fe2O3;Graphene aerogel;Persulfate;Wastewater
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