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Sunlight-driven synthesis of anisotropic silver nanoparticles

journal contribution
posted on 2014-08-21, 00:00 authored by Bin TangBin Tang, Lu Sun, Jingliang LiJingliang Li, Mingwen Zhang, Xungai Wang
Photoinduced shape conversion of silver nanoparticles was realized using sunlight. The silver seeds were transformed to silver nanoprisms under sunlight when the concentration of citrate was low (≤5.0×10-4M). Nevertheless, sunlight converted the obtained silver nanoprisms to silver nanodecahedrons when the concentration of citrate in reaction system was increased. It was found that the ultraviolet light from sunlight played a vital role in the shape conversion from nanoprism to nanodecahedron. Lighting power density did not influence the shape conversion except for reaction rate. Besides, the silver nanodecahedrons were synthesized in the mixed solution of AgNO3 and citrate in absence of silver seeds through irradiation by simulated sunlight. The mechanism on the sunlight induced synthesis of silver nanoparticles was discussed. Anisotropic silver nanoparticles including nanoprisms and nanodecahedrons were obtained through controlling the citrate concentration and irradiation time by sunlight from green light source.

History

Journal

Chemical engineering journal

Volume

260

Pagination

99 - 106

Publisher

Elsevier BV

Location

Amsterdam, Netherlands

ISSN

1385-8947

eISSN

1873-3212

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Elsevier BV