Synergistically Augmented ZnO via Cobalt and Copper Simultaneous Doping for Pollutant Reduction. Issue 14 (12th April 2023)

• Record Type: Journal Article
• Authors: Kedir, Haji; Tsegaye, Dereje; Abebe, Buzuayehu; Murthy, H. C. Ananda; Ravikumar, C R; Reddy, S. Giridhar
• Is Part Of: ChemistrySelect. Volume 8:Issue 14(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-04-12
• Subjects: 4-nitrophenol -- Catalysis -- methylene blue -- nanocomposite -- porous; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202300638
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Continuous electron‐hole transfer and the ability of nanoscale materials to absorb visible light are critical for pollutant catalytic reduction. Cobalt and copper co‐doped ZnO composites were shaped by the sol‐gel solution combustion (SG‐SC) approach. The x‐ray diffraction analysis confirmed the crystalline nature and interstitial doping of copper and cobalt in the zinc oxide lattice and the development of ZnO‐CuO local contact. The PL and DRS‐UV‐vis investigations showed the NCs' superior charge transfer and considerable redshift (from 3.17 to 2.21 eV) properties over ZnO. TEM and SEM‐EDS analyses confirmed the foam‐type surface morphology, elemental composition, and dopant distribution. The NCs showed greater potency than ZnO NPs in the catalytic reduction reactions of 4‐nitrophenol and methylene blue. Thus, the SG‐SC approach has the potential for industrially scalable catalytic pollutant reduction applications. Abstract : Materials′ light absorption and charge transfer capacities are crucial for catalytic pollutant reduction. Interstitial doping or forming a local contact between metal oxides improves the charge transfer process, which then increases the materials′ catalytic pollutant reduction potential. The straightforward and energy‐ and time‐saving sol‐gel combustion synthesis has a promising future in industrial pollutant remediation.