Enhanced sun light driven photocatalytic activity of Co doped SnO2 loaded corn cob activated carbon for methylene blue dye degradation. (May 2022)

• Record Type: Journal Article
• Authors: Ragupathy, S.; Manikandan, Velu; Devanesan, Sandhanasamy; Ahmed, Mukhtar; Ramamoorthy, M.; Priyadharsan, A.
• Is Part Of: Chemosphere. Volume 295(2022)
• Publication Date: 2022-05
• Subjects: Activated carbon -- Co doping -- Methylene blue -- Photocatalytic activity -- SnO2 NPs; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.133848
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: SnO2 with different Co 2+ doping concentrations and Co (0.075 M): SnO2 loaded corn cob activated carbon (Co: SnO2 /CCAC) were prepared, and are labelled as CS1, CS2, CS3 and CS2/CCAC, respectively. The CS2/CCAC showed that the particle size (18.76 nm) and band gap (3.50 eV) are reduced with Co 2+ doping and CCAC loading. Moreover, CS2/CCAC indicate that the decreased PL intensity and its lower value (2.156 kΩ) of impedance from EIS results which indicates the increased separation of the photogenerated e − /h + pairs. Thus, the result showed that CS2/CCAC maximum degradation efficiency of MB (95.38%) and the photocatalytic mechanism is also discussed. Highlights: Co doped SnO2 loaded CCAC were synthesized by a chemical precipitation method. Co–SnO2 loaded CCAC showed that the particle size, band gap are also reduced and increased surface area. The Co–SnO2 /CCAC showed a higher photocatalytic activity than pure and Co doped SnO2 in the decomposition of MB.