☆ 4.6 Article

Facile two-step synthesis of Ag nanoparticles dispersed on N, S co-doped RGO for highly efficient plasmonic photocatalytic water purification

CATALYSIS COMMUNICATIONS (2019)

期刊

CATALYSIS COMMUNICATIONS

卷 119, 期 -, 页码 42-45

出版社

ELSEVIER SCIENCE BV

DOI: 10.1016/j.catcom.2018.10.013

关键词

Heteroatoms doping; Plasmon; Reduced graphene oxide; Photocatalysis; Water purification

类别

Chemistry, Physical

资金

Natural Science Foundation of Jiangxi, China [20171BAB213011]
Foundation of Jiangxi Provincial Department of Education [GJJ171035, GJJ161141]
Natural Science Project of Jiangxi University of Technology [ZR1701]

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摘要

AgNPs/NSRGO nanocomposite was firstly synthesized by facile two-step methods, exhibiting higher visible-light catalytic performance than GO and commercial TiO2 (P25). According to the reaction rate constant, AgNPs/NSRGO shows 8.3 and 5.3 times photoactivity compared to P25 for degrading methylene blue and 4-nitrophenol, respectively. Furthermore, the nanocomposite kills 98.6% of Escherichia coli in 3 h while P25 only 27.4%. We also infer that the improved photoactivity is attributed to the impurity levels of heteroatoms and plasmonic effect from AgNPs, resulting in narrowing bandgap of composite, efficient separation of charge carriers and generation of more reactive oxygen species.

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