Microwave-assisted hydrothermal synthesis of CuWO 4 -palygorskite nanocomposite for enhanced visible photocatalytic response
Journal of Alloys and Compounds, ISSN: 0925-8388, Vol: 863, Page: 158731
2021
- 39Citations
- 65Captures
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Article Description
CuWO 4 -Pal nanocomposite formed by copper (II) tungstate nanoparticles with palygorskite clay mineral (Pal) was synthesized via coprecipitation method followed by microwave-assisted hydrothermal technique and applied in the photodegradation of the antibiotic ciprofloxacin (CIP) using visible-light irradiation. The formation of CuWO 4 -Pal nanocomposite was confirmed by XRD, Raman spectroscopy and DRIFT studies. X-ray photoelectron spectroscopy (XPS) and photoelectrochemical studies of the nanocomposite showed structural changes, which induced the formation of oxygen vacancies and better charge carrier mobility. Field emission scanning electron microscopy (FE–SEM) and transmission electron microscopy (TEM) images revealed the fibrous morphology of Pal as well as the control of CuWO 4 crystal growth with the formation of the nanocomposite. The CIP photodegradation was influenced by the adsorption power and the pH solution. CuWO 4 -Pal exhibited 92% of CIP photodegradation and 50% of total organic carbon (TOC) removal using an initial concentration of 8 mg L −1 at pH 10 after 90 min. Together with the photoelectrochemical study, the scavengers used indicated that the hole ( h+ ) is the main oxidative species in CIP photodegradation.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0925838821001389; http://dx.doi.org/10.1016/j.jallcom.2021.158731; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85099630300&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0925838821001389; https://dx.doi.org/10.1016/j.jallcom.2021.158731
Elsevier BV
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