Copper zinc tin sulfide and multi-walled carbon nanotubes nanocomposite for visible-light-driven photocatalytic applications
| Autor: | Ravi Mudike, Murthy Muniyappa, Guddappa Halligudra, Ananda Kumar Cs, Manikanta P. Narayanaswamy, Prasanna D. Shivaramu, Dinesh Rangappa, Jagadeesh Babu Sriramoju, Chetana Sabbanahalli, Amarnath Bheemaraju |
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| Rok vydání: | 2022 |
| Předmět: |
Nanocomposite
Materials science Mechanical Engineering chemistry.chemical_element Carbon nanotube Zinc Condensed Matter Physics law.invention chemistry.chemical_compound symbols.namesake chemistry Mechanics of Materials law symbols Photocatalysis General Materials Science CZTS Raman spectroscopy Photodegradation Nuclear chemistry Visible spectrum |
| Zdroj: | Materials Research Bulletin. 146:111606 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2021.111606 |
| Popis: | Photocatalytic activity of hydrothermally synthesized CZTS-MWCNT hetero structured NCs was investigated here. The CZTS NPs and CZTS-MWCNT NCs of varying MWCNT contents (3 wt%, 6 wt% and 9 wt%) were characterized by XRD , SEM, TEM, Raman and UV–Vis spectroscopy. The TEM image confirmed that the CZTS NPs are anchored to MWCNTs. From the UV–Vis spectroscopy, the optimum optical band gap of CZTS-6 wt% MWCNT NCs was found 1.4 eV and exhibited higher absorption than CZTS NPs. Under visible light radiation, photocatalytic dye degradation of methylene blue studies revealed a 19% higher photodegradation efficiency for CZTS-6 wt% MWCNT NCs than CZTS NPs. CZTS-6 wt% MWCNT NCs achieved a reaction rate constant of 0.012 mi n − 1 , which is twice that of CZTS NPs. Because of the optimal bandgap of CZTS and the rapid charge carrier mobility of MWCNTs, CZTS-MWCNT NCs have the advantage of enhancing photocatalytic activity over CZTS NPs. |
| Databáze: | OpenAIRE |
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