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DFT and experimental investigations on the photocatalytic activities of NiO nanobelts for removal of organic pollutants

Kitchamsetti, Narasimharao, Ramteke, Mrunmay S., Rondiya, Sachin R., Mulani, Sameena R., Patil, Madhuri S., Cross, Russell W., Dzade, Nelson Y. and Devan, Rupesh S. 2021. DFT and experimental investigations on the photocatalytic activities of NiO nanobelts for removal of organic pollutants. Journal of Alloys and Compounds 855 (P1) , 157337. 10.1016/j.jallcom.2020.157337

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NiO nanobelts synthesized using the hydrothermal method are explored for photocatalytic degradation of organic pollutants like RhB, MO, MB, and CV. The XPS analysis confirmed the formation of the stoichiometric NiO nanobelts. Few micrometer long cubic crystalline NiO nanobelts of the average thickness of ∼75 nm delivered a bandgap of 4.07 eV. The FTIR studies revealed that the mesoporous NiO nanobelts delivered stable photocatalytic activities after controlled irradiation under a xenon lamp. The kinetic studies showed the 79.1, 82.7, 76.7, and 89% degradation of MO, MB, CV, and RhB after 140 min at the rate constants (k) of 0.007, 0.008, 0.009, and 0.012 min−1, respectively. Complementary first-principles Density Functional Theory (DFT) and scavenging studies revealed the chemical picture and influence of the , and photogenerated from NiO nanobelts in the photocatalytic degradation of organic dyes. These studies corroborate the use of the NiO nanobelts in the stable and eco-friendly photocatalytic degradation activities of a wide range of organic pollutants.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Elsevier
ISSN: 0925-8388
Funders: EPSRC
Date of First Compliant Deposit: 14 October 2020
Date of Acceptance: 24 September 2020
Last Modified: 26 Oct 2021 01:07

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