期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 11, 页码 15756-15763出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b04320
关键词
Cellulose; Nanocomposite; Adsorption; Photocatalytic degradation; Sustainability
资金
- National Natural Science Foundation of China [21706193]
- Natural Science Foundation of Tianjin [17JCQNJC05200]
- Young Elite Scientists Sponsorship Program by Tianjin [TJSQNTJ-2017-19]
We present a green and low-cost approach to fabricate titanium dioxide nanoparticles (TiO2 NPs)/polydopamine (PDA)/cellulose fibers (CF) composite (TiO2/PDA/CF) by using PDA as functional layer and a protective agent. Mussel-inspired PDA layer robustly adhered to CF, and TiO2 NPs were immobilized on the surface of PDA layer through facile hydrolysis of TiOSO4. The TiO2/PDA/CF composite exhibited an improved stability of CF and a good reutilization property, which benefitted from the PDA layer between CF substrate and TiO2 NPs. Moreover, the TiO2/PDA functional layer remarkably enhanced the adsorption capacities of Pb2+ (similar to 20mg/g) and methylene blue (MB, similar to 15 mg/g). And the better photocatalytic performance of this composite further improved the efficiency of MB removing. This cellulose-based nanocomposite has great potential in photocatalysis and wastewater treatment with low energy consumption, economic, and environmental sustainability.
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