Development of flexible and mesoporous CdS/ZnS/PVDF nanocomposites with remarkable organic dye degradation performance under natural sunlight

Anju Devi, S and Jugeshwar Singh, K and Nomita Devi, K (2024) Development of flexible and mesoporous CdS/ZnS/PVDF nanocomposites with remarkable organic dye degradation performance under natural sunlight. In: Optical Materials, 157 .

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Abstract

The engineering of polymer-based nanocomposites is a highly promising strategy for improving both the efficiency and stability of catalysts used in wastewater treatment. In this work, we explore the efficacy of flexible CdS/ZnS/PVDF nanocomposite films towards degradation of Malachite Green dye under low energy visible light and ambient sunlight. Films with varying weight percentage of CdS/ZnS nanofillers (0 , 5 , 10 , 15 , 20 ) were successfully prepared by solution casting method and the physiochemical properties were characterized using various techniques such as XRD, SEM, AFM, EDX, BET, UV�Vis DRS and FTIR. Pore diameter of 5.5 nm was observed, indicating that CdS/ZnS is mesoporous in nature. Under the optimum photocatalytic condition of 15 ppm dye concentration and pH 9, 15 wt CdS/ZnS/PVDF showed the maximum photodegradation efficiency of 93.5 in 30 min. The sample exhibited excellent reusability for five consecutive runs of the experiments which show a degradation percentage of 92.1 in the fifth run and the scavenging study established that superoxide radicals play the major role in the photodegradation process. The experiments under natural sunlight on three separate days showed a remarkable photodegradation performance of 89 , 93.4 and 93.6 highlighting the potential of CdS/ZnS/PVDF nanocomposites for sustainable wastewater treatment under natural sunlight. © 2024 Elsevier B.V.

Item Type:	Journal Article
Publication:	Optical Materials
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the Publisher.
Keywords:	Nanoclay; Nanocomposite films; Selenium compounds; Wastewater treatment, CdS; Dye degradation; Mesoporous; Natural sunlight; Organic dye; P.V.D.F; Performance; Photo degradation; Sunlight; Visible light, Mesopores
Department/Centre:	Centres under the Director > Talent Development Centre, Challakere Campus
Date Deposited:	29 Nov 2024 08:44
Last Modified:	29 Nov 2024 09:05
URI:	http://eprints.iisc.ac.in/id/eprint/86948

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