Synthesis of Strong Light Scattering Absorber of TiO2–CMK-3/Ag for Photocatalytic Water Splitting under Visible Light Irradiation

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Title:	Synthesis of Strong Light Scattering Absorber of TiO2–CMK-3/Ag for Photocatalytic Water Splitting under Visible Light Irradiation
Authors:	Wei Hsuan Hung, Sz Nian Lai, and An Ya Lo
Contributors:	圖書館
Keywords:	mesoporous carbon photocatalytic water splitting plasmonic titanium dioxide
Date:	2015
Issue Date:	2016-10-14 13:07:43 (UTC+8)
Abstract:	The enhanced water splitting photocurrent has been observed through plasmonic mesoporous composite electrode TiO2–CMK-3/Ag under visible light irradiation. Strong light absorption achieved from the integrations of ordered mesoporous carbon (CMK-3) and silver plasmonic nanoparticles (NPs) layer in the TiO2, which significantly increased the effective optical depth of TiO2–CMK-3/Ag photoelectrode. The carbon-based CMK-3 also increased the surface wetting behavior and conductivity of the photoelectrodes, which resulted in a higher ion exchange rate and faster electron transport. The synthesis of high crystalline TiO2–CMK-3/Ag composite photocatalyst was verified by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Pronounced enhancement of light absorption of TiO2–CMK-3/Ag photoelectrode was confirmed by UV/vis spectrophotometers. Two orders of magnitude of the enhanced water splitting photocurrent were obtained in the TiO2–CMK-3/Ag composite photoelectrode with respect to TiO2 only. Finally, spatially resolved mapping photocurrents were also demonstrated in this study.
Relation:	ACS Applied Materials & Interfaces
Appears in Collections:	[Department of Chemical and Materials Engineering] 【化工與材料工程系】期刊論文

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