Green CuO nanoparticle-chitosan Schiff base hydrogel composite for efficient catalytic reduction of anthropogenic water toxins

IF 3.5 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Science Pub Date : 2025-01-07 DOI:10.1007/s10853-024-10574-y
Ganeswar Dalei, Subhraseema Das, Achyuta Nanda Acharya
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Abstract

With water pollution surging at an alarming rate; an economical and sustainable material is warranted for mitigation of anthropogenic toxins. Herein, a nanocomposite hydrogel composed of CuO nanoparticles (NPs) embedded in chitosan-formaldehyde (CsF) Schiff base hydrogel was explored as a catalyst towards the reduction of environmental pollutants. Green synthesis of CuO NPs was accomplished from watermelon rind extract. Spherical CuO NPs having an average particle size of 29.8 nm with a zeta potential of − 23.1 mV was obtained. The CuO NPs-integrated CsF hydrogel demonstrated good catalytic reduction of pollutants like 4-nitrophenol (4-NP), K3[Fe(CN)6], rhodamine B (RhB) and methyl orange (MO) in the presence of NaBH4. The influence of different parameters on the catalytic activity and the kinetics was assessed. The apparent rate constant for reduction reaction of 4-NP, K3[Fe(CN)6], RhB and MO by the hydrogel was estimated to be 0.025 s–1, 0.016 s–1, 0.135 s–1 and 0.099 s–1 respectively. The hydrogel depicted a recyclability of four stable cycles. Our study paves the path for the development of a sustainable hydrogel catalyst for reduction of hazardous anthropogenic pollutants in wastewater treatment.

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绿色氧化铜纳米粒子-壳聚糖希夫碱水凝胶复合材料高效催化还原人为水毒素
水污染以惊人的速度激增;经济和可持续的材料是必要的,以减轻人为毒素。本文研究了一种由CuO纳米颗粒(NPs)嵌入壳聚糖-甲醛(CsF)希夫碱水凝胶的纳米复合水凝胶,作为减少环境污染物的催化剂。以西瓜皮提取物为原料,实现了CuO NPs的绿色合成。得到了平均粒径为29.8 nm、zeta电位为- 23.1 mV的球形CuO NPs。在NaBH4存在下,CuO nps - CsF水凝胶对4-硝基苯酚(4-NP)、K3[Fe(CN)6]、罗丹明B (RhB)和甲基橙(MO)等污染物具有良好的催化还原作用。考察了不同参数对催化活性和动力学的影响。水凝胶还原4-NP、K3[Fe(CN)6]、RhB和MO的表观速率常数分别为0.025 s-1、0.016 s-1、0.135 s-1和0.099 s-1。水凝胶具有四个稳定循环的可循环性。我们的研究为开发一种可持续的水凝胶催化剂来减少废水处理中的有害人为污染物铺平了道路。图形抽象
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来源期刊
Journal of Materials Science
Journal of Materials Science 工程技术-材料科学:综合
CiteScore
7.90
自引率
4.40%
发文量
1297
审稿时长
2.4 months
期刊介绍: The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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