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Facile preparation of ternary AgCO/Ag/PANI composite nanorods with enhanced photoactivity and stability.
- Source :
- Journal of Materials Science; Apr2017, Vol. 52 Issue 8, p4521-4531, 11p
- Publication Year :
- 2017
-
Abstract
- One-dimensional ternary nanostructures, AgCO nanorod cores coated with an intermediate layer of Ag nanoparticles (NPs) and a sheath of conducting polymer polyaniline (PANI), AgCO/Ag/PANI composite nanorods (CNRs), were successfully prepared via a facile two-step method. Ag NPs were first uniformly anchored onto the AgCO nanorods to form binary AgCO/Ag CNRs with an in situ visible-light-induced reduction strategy, and then the AgCO/Ag CNRs were coated with PANI of different contents through a simple chemisorption approach. The as-obtained hybrids exhibit significantly enhanced photoelectrochemical current response and photoactivity in degrading methyl orange under visible-light illumination ( λ > 420 nm). The improved photoactivity was found to be related to the intermediate Ag between AgCO and PANI which facilitates the separation efficiency of photogenerated carriers, and an optimal weight percent of 2.0% PANI was observed. The origin of enhanced photoactivity was further investigated by a radical-trapping test, and a Z-scheme mechanism was proposed to explain the charge separation behaviors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 52
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 121015004
- Full Text :
- https://doi.org/10.1007/s10853-016-0697-7