Generation of novel n-p-n (CeO2-PPy-ZnO) heterojunction for photocatalytic degradation of micro-organic pollutants. (1st January 2022)

• Record Type: Journal Article
• Authors: Rajendran, Saravanan; Hoang, Tuan K.A.; Trudeau, Michel L.; Jalil, A.A.; Naushad, Mu.; Awual, Md. Rabiul
• Is Part Of: Environmental pollution. Volume 292:Part B(2022)
• Publication Date: 2022-01-01
• Subjects: Chlorophenol -- n-p-n heterojunction -- Visible light -- Photocatalyst; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2021.118375
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Recently, hetero junction materials (p-n-p and n-p-n) have been developed for uplifting the visible light activity to destroy the harmful pollutants in wastewater. This manuscript presents a vivid description of novel n- p- n junction materials namely CeO2 - PPy- ZnO. This novel n- p- n junction was applied as the photocatalyst in drifting the mobility of charge carriers and hence obtaining the better photocatalytic activity when compared with p-n and pure system. Such catalyst's syntheses were successful via the copolymerization method. The structural, morphological and optical characterization techniques were applied to identify the physio-chemical properties of the prepared materials. Additionally, the superior performance of this n-p-n nanostructured material was demonstrated in the destruction of micro organic (chlorophenol) toxic wastes under visible light. The accomplished ability of the prepared catalysts (up to 92% degradation of chlorophenol after 180 min of irradiation) and their profound degradation mechanism was explained in detail. Highlights: Surface modification were done by novel n-p-n combinations. The electric field was authorized by dual p-n junctions. The n-p-n combination interrupted the electron-hole recombination. The suitable ratio of n-p-n catalyst has showed superior destruction of micro organic pollutant.