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Simple and Enhanced Thermal Immobilization of Gold Nanoparticles on TiO 2 coated ITO Electrodes for Photoelectrochemical Water Oxidation
Author(s) -
Khan A.,
Aziz Md. Abdul,
Qamar Mohammad
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701648
Subject(s) - materials science , indium tin oxide , visible spectrum , electrode , nanoparticle , chemical engineering , thermal oxidation , colloidal gold , electrochemistry , indium , photocatalysis , electron transfer , oxide , nanotechnology , catalysis , photochemistry , optoelectronics , chemistry , thin film , biochemistry , engineering , metallurgy
Herein, we demonstrate a novel and facile thermal method for effective immobilization of pre‐synthesized AuNPs onto the surface of TiO 2 coated on indium tin oxide (ITO). The density and size of AuNPs were controlled by process temperature and molar strength of Au precursor solution respectively. The microscopic image revealed fine and well‐dispersed AuNPs on TiO 2 surface. The photoelectrochemical (PEC) water oxidation was studied under ultraviolet‐visible and visible light, and efficiencies of the pure and Au‐modified‐TiO 2 /ITO electrodes were compared. A plausible schematic for interfacial electron transfer reaction is proposed for different solar spectrum.