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 Xiaolin Luo, Huanting Hu, Zhe Pan, Fei Pei, Huaming Qian, Kangkang Miao, Sifan Guo, Wei Wang, Guodong Feng
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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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