期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 4, 期 3, 页码 1679-1688出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b01614
关键词
Antimicrobial activity; Dye degradation; Nanocomposite; Photocatalytic degradation; TiO2-AuNPs
资金
- Department of Science and Technology, New Delhi, India [DST/TM/WTI/2K12/67]
Herein, functionalized amylopectin and in situ generated TiO2 and Au nanoparticles (NPs)-based nano composite with excellent toxic organic dye removal capacity, via synergistic effects of adsorption and photocatalytic degradation, along with enhanced antimicrobial activity, is reported. The TiO2 and TiO2-AuNPs incorporated nano composites (g-AP-pAA/TiO2, g-AP-pAA/TiO2-Au) have been synthesized by the addition of ethanolic solution of titanium isopropoxide (Ti-Pr-i) followed by HAuCl4 to the gelling matrix of functionalized amylopectin. Characterization results confirm the formation of uniform distribution of anatase TiO2 (5-8 nm) and Au (7-15 nm) NPs in the polymer matrix. The synthesized g-AP-pAA/TiO2-Au nanocomposite demonstrates excellent potential to remove dyes from concentrated aqueous dye solution via simultaneous adsorption followed by photocatalytic degradation under sunlight through plasmonic photocatalysis. Synthesized g-AP-pAA/TiO2-Au is capable of removing one specific dye from a mixture of dyes. In addition, the photo induced bacterial (Escherichia coli) growth inhibition characteristics of the composite indicate the development of a novel new generation sustainable and cost-effective polymeric nanocomposite.
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