催化作用
纳米复合材料
降级(电信)
纤维素
材料科学
原位
化学工程
自愈水凝胶
离子液体
环境修复
亚甲蓝
矿化(土壤科学)
污染
化学
复合材料
高分子化学
有机化学
光催化
氮气
生态学
工程类
生物
电信
计算机科学
作者
Jinlong Zhu,Menglin Wang,Shao-Cong Shi,Jia-Xin Ren,Hua‐Dong Huang,Wei Lin,Zhong‐Ming Li
出处
期刊:Cellulose
[Springer Nature]
日期:2022-01-11
卷期号:29 (3): 1929-1942
被引量:8
标识
DOI:10.1007/s10570-021-04411-7
摘要
The hydrogel supported catalyst is explored as an efficient strategy for water remediation due to its combination of absorption and degradation, while it remains great challenge to prepare highly dispersed multi-component catalyst. Herein, cellulose-based hydrogel containing dual-component catalysts was fabricated via in-situ synthesis and mineralization, where the cellulose network containing –OH and –COOH provided a good platform for achieving highly dispersed TiO2 and Fe3O4. To the methylene blue (MB) solution (c0 = 20 mg/L), the TiO2/Fe3O4 nanocomposite hydrogel displayed a high removal ratio of 97.5% in 60 min by photo-Fenton reaction. Interestingly, owing to the ionic hydrogel feature, the degradation efficiency maintained over 97.2% in a broad initial pH range from 4 to 7, And the hydrogel could effectively hold the contaminants with nearly no leakage and retained the removal ratio of 98.0% after 5 degradation cycles. This study provides new insights into the in-situ synthesis of multi-component catalyst in hydrogels for efficient, stable, and safe water treatment.
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