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Liquid Metal/Metal Oxide Frameworks with Incorporated Ga2O3 for Photocatalysis

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journal contribution
posted on 2015-01-28, 00:00 authored by Wei Zhang, Boddu S. Naidu, Jian Zhen Ou, Anthony P. O’Mullane, Adam F. Chrimes, Benjamin J. Carey, Yichao Wang, Shi-Yang Tang, Vijay Sivan, Arnan Mitchell, Suresh K. Bhargava, Kourosh Kalantar-zadeh
Solvothermally synthesized Ga2O3 nanoparticles are incorporated into liquid metal/metal oxide (LM/MO) frameworks in order to form enhanced photocatalytic systems. The LM/MO frameworks, both with and without incorporated Ga2O3 nanoparticles, show photocatalytic activity due to a plasmonic effect where performance is related to the loading of Ga2O3 nanoparticles. Optimum photocatalytic efficiency is obtained with 1 wt % incorporation of Ga2O3 nanoparticles. This can be attributed to the sub-bandgap states of LM/MO frameworks, contributing to pseudo-ohmic contacts which reduce the free carrier injection barrier to Ga2O3.