Journal
SYNTHETIC METALS
Volume 267, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2020.116479
Keywords
Ag@CuO nanocomposite; Heterogeneous catalysis; Oxidative degradation; Dyes treatment; Persulfate
Funding
- Natural Science Foundation of Anhui Education Department [KJ2018A0525]
- Excellent Talents Program of of Anhui Province [gxyq2019062]
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In this study, the Ag@CuO nanocomposite was prepared by a simple chemical reaction, and successfully used as a persulfate activator in the oxidative degradation of Rhodamine B (RHB). The micromorphology, crystal structure, elemental composition and content, and chemical state of Ag@CuO nanocomposite were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray energy spectrum analysis (EDS), inductively coupled plasma-atomic emission spectrometry (ICP-AES), and X-ray photoelectron spectroscopy (XPS), respectively. The activator possesses a minor particle agglomeration. The degradation efficiency and degradation kinetics of RHB were investigated by different catalysts activated per sulfate and at different temperatures. The results revealed that the Ag@CuO nanocomposite has better catalytic activity for the activation of persulfate potassium to degrade RHB than the contrastive activators. The oxidative degradation of RHB is a pseudo-first order reaction, and the higher temperature is benefit for the RHB degradation. The Ag@CuO nanocomposite presented a long-term stability through the cycle experiment in the degradation of RHB.
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