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MXene/ZnS/chitosan-cellulose composite with Schottky heterostructure for efficient removal of anionic dyes by synergistic effect of adsorption and photocatalytic degradation.
- Source :
-
International journal of biological macromolecules [Int J Biol Macromol] 2024 Jun; Vol. 269 (Pt 1), pp. 131994. Date of Electronic Publication: 2024 May 01. - Publication Year :
- 2024
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Abstract
- Nowadays, dye water pollution is becoming increasingly severe. Composite of MXene, ZnS, and chitosan-cellulose material (MX/ZnS/CC) was developed to remove anionic dyes through the synergistic effect of adsorption and photocatalytic degradation. MXene was introduced as the cocatalyst to form Schottky heterostructure with ZnS for improving the separation efficiency of photocarriers and photocatalytic performance. Chitosan-cellulose material mainly served as the dye adsorbent, while also could improve material stability and assist in generation of free radicals for dye degradation. The physics and chemistry properties of MX/ZnS/CC composite were systematically inspected through various characterizations. MX/ZnS/CC composite exhibited good adsorption ability to anionic dyes with adsorption capacity up to 1.29 g/g, and excellent synergistic effects of adsorption and photodegradation with synergistic removal capacity up to 5.63 g/g. MX/ZnS/CC composite performed higher synergistic removal ability and better optical and electrical properties than pure MXene, ZnS, chitosan-cellulose material, and MXene/ZnS. After compounding, the synergistic removal percentage of dyes increased by a maximum of 309 %. MX/ZnS/CC composite mainly adsorbs anionic dyes through electrostatic interactions and catalyzes the generation of •O <subscript>2</subscript> <superscript>-</superscript> , h <superscript>+</superscript> , and •OH to degrade dyes, which has been successfully used to remove anionic dyes from environmental water, achieving a 100 % removal of 50 mg/L dye.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Subjects :
- Adsorption
Catalysis
Sulfides chemistry
Water Purification methods
Photolysis
Anions chemistry
Chitosan chemistry
Cellulose chemistry
Zinc Compounds chemistry
Coloring Agents chemistry
Coloring Agents isolation & purification
Water Pollutants, Chemical chemistry
Water Pollutants, Chemical isolation & purification
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0003
- Volume :
- 269
- Issue :
- Pt 1
- Database :
- MEDLINE
- Journal :
- International journal of biological macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 38697431
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2024.131994