Combined Au-plasmonic nanoparticles with mesoporous carbon material (CMK-3) for photocatalytic water splitting

Wei Hsuan Hung, Sz Nian Lai, Cheng Yi Su, Min Yin, Dongdong Li, Xinzhong Xue, Chuan Ming Tseng

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The conventional TiO2 photoelectrode for water splitting was integrated with ordered mesoporous carbon material (CMK-3) and Au metal nanoparticles (NPs) to improve the photocatalytic efficiency under visible light irradiation. Compared to TiO2, Au/TiO2-CMK-3 photoelectrode demonstrated over two orders of magnitude enhancement of photocurrent under 532 nm laser irradiation due to the generation of hot electron and near field from Au NPs. Furthermore, the improvement of free carrier transport and additional long-wavelength absorption can be achieved by exploiting the superior conductivity and blackbody-like property of CMK-3. This proposed enhancement mechanism was proved by the measurements of photoluminescence emission spectrum and electrochemical impedance spectroscopy.

Original languageEnglish
Article number073904
JournalApplied Physics Letters
Volume107
Issue number7
DOIs
StatePublished - 17 Aug 2015

Fingerprint

Dive into the research topics of 'Combined Au-plasmonic nanoparticles with mesoporous carbon material (CMK-3) for photocatalytic water splitting'. Together they form a unique fingerprint.

Cite this