Biodegradable cobalt and tin doped chitosan nanocomposites from structure tailoring to solar-driven photocatalytic degradation of toxic organic dyes

被引：0

作者：

Malik, Sumeet ^{[1
,2
]}

Khan, Adnan ^{[1
]}

Rahim, Hajra ^{[1
]}

Rahim, Sara ^{[1
]}

Munawar, Ayesha ^{[1
]}

Ali, Nauman ^{[1
]}

Bououdina, Mohamed ^{[2
]}

Nawaz, Arif ^{[1
]}

Ali, Nisar ^{[3
,4
]}

机构：

[1] Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan

[2] Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia

[3] National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an,223003, China

[4] Department of Applied and Basic Sciences, School of Applied Health Sciences, A'Sharqiyah University, P.O. Box 42, Ibra,400, Oman

来源：

International Journal of Biological Macromolecules | 2024年 / 283卷

关键词：

The primary concern is the large amounts of emitted organic dyes through wastewater from numerous sectors. One of the most hazardous dyes commonly used in the industrial sector is methyl violet. It has been known to cause skin; gastric; and respiratory disorders. Therefore; a novel photocatalyst based on cobalt‑tin sulfide (Co3Sn2S2) was prepared using the solvothermal process. The photocatalyst was supplemented with Chitosan to prepare the cobalt tin sulfide-chitosan composite (Co3Sn2S2/Chi) for the photocatalytic degradation of methyl violet dye. Based on EDX analysis; a definite ratio of tin; cobalt; and sulfide was found. The FTIR of Co3Sn2S2/Chi revealed the characteristic bands of chitosan and metal sulfide bonds. SEM results showed that the particle had an irregular shape. The composite's crystalline structure was identified by XRD analysis as being 56 nm in crystalline size. The photocatalyst had a narrow band gap of 1.02 eV. At ideal conditions; the developed photocatalyst demonstrated greater degradation efficiency of methyl violet dye under solar light irradiation. The photocatalyst successfully decomposed 95 % of the methyl violet dye (40 ppm) within 70 min; operating at a pH of 9.0. This remarkable degradation was achieved by employing 0.25 g of the photocatalyst. The photocatalyst is more appealing and can be reused for up to three successive cycles. The photocatalyst is well-suited for pseudo-first-order kinetics to decontaminate methyl violet dye. The novel photocatalyst showed the most robust ability to decolorize methyl violet when exposed to sunlight and was a viable substitute for dye detoxification of organic dyes from wastewater. © 2024 Elsevier B.V;

D O I：

10.1016/j.ijbiomac.2024.137512

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