Bio-inspired ZnS quantum dots as efficient photo catalysts for the degradation of methylene blue in aqueous phase 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
CERAMICS INTERNATIONAL
年/卷/期
2019 / 45 / 4
页码
4857-4862
ISSN号
0272-8842
作者单位
Sree Buddha Coll Engn, Dept Biotechnol & Biochem Engn, Alappuzha 690529, Kerala, India;Sree Buddha Coll Engn, Dept Biotechnol & Biochem Engn, Alappuzha 690529, Kerala, India;Sree Buddha Coll Engn, Dept Biotechnol & Biochem Engn, Alappuzha 690529, Kerala, India;Ton Duc Thang Univ, Fac Environm & Labour Safety, Innovat Green Prod Synth & Renewable Environm Dev, Ho Chi Minh City, Vietnam;Sree Buddha Coll Engn, Dept Biotechnol & Biochem Engn, Alappuzha 690529, Kerala, India;
作者
Rajan, Reju;Aji, Malavika;Kurup, Gayathri G.;Pugazhendhi, Arivalagan;Jacob, Jaya Mary;
摘要
ZnS quantum dots are semiconductor nanoparticles characterized by superior optoelectronic properties. The amenability of these nanoparticles in initiating efficient photo-redox reactions enable their use as photocatalysts for environmental remediation. In the present study, ZnS quantum dots were biosynthesized from Zn tolerant Penicillium sp. under ambient reaction conditions. The biogenic ZnS quantum dots were characterized using TEM, SEM, XRD, FTIR and UV-Vis absorption studies that revealed the formation of spherical particles of average diameter 11.08 nm with a zinc blend crystal structure and the optical properties were in par with chemically synthesized ZnS. The biogenic ZnS were then used for the photodegradation of methylene blue (MB) dye. It was found that the green synthesized ZnS quantum dots exhibited good photocatalytic activity with a half-life of 4 h. Further, the dye degradation efficiency was enhanced as the ZnS nanocatalyst/dye ratio increased and reached equilibrium within 6 h. The present study reports an inexpensive and scalable method to fabricate ZnS nano hybrids with practical applicability in the remediation of pollutants in textile, paper and dyeing industry.
机翻摘要
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关键词/主题词
ZnS;Quantum dots;Photodegradation;Photocatalysis;Penicillium sp;
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