Efficient and stable catalysis of hollow CuS nanospheres in the Fenton-like degradation of organic dyes.

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ID: 104963
2020
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Abstract
The development of new heterogeneous catalysts with stable catalytic activity in a wide pH range to prevent polluting precipitation plays a vital role in large-scale wastewater treatment. Here, a facile anion exchange strategy was designed to fabricate hollow CuS nanospheres by using CuO nanospheres as hard-templates. The structural and compositional transformation from CuO nanospheres to hollow CuS nanospheres were investigated via X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The Fenton-like degradation of organic dyes was used to evaluate the catalytic performance of the obtained Cu-containing catalysts. Results reveal that the hollow CuS nanospheres have the best catalytic activity among five kinds of Cu-containing catalysts. Hollow CuS nanospheres can effectively accelerate the decomposition of HO into hydroxyl radicals and superoxide radical, which have been proven to be mainly oxidative species in the Fenton-like degradation of organic pollutants. Hollow CuS nanospheres have a wide pH application range of 5.0-9.0, and their extremely stable activity can be maintained in at least 15 catalytic cycles with a Cu ion leaching rate of less than 1.0 %. The outstanding catalytic performance of the CuS catalyst is expected to enhance the practical applications of copper sulfide catalysts in Fenton-like wastewater treatment.
Reference Key
luo2020efficientjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Luo, Xiaolin;Hu, Huanting;Pan, Zhe;Pei, Fei;Qian, Huaming;Miao, Kangkang;Guo, Sifan;Wang, Wei;Feng, Guodong;
Journal Journal of hazardous materials
Year 2020
DOI
S0304-3894(20)30724-X
URL
Keywords
wastewater treatment stability fenton anion exchange digenite

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