Highly Efficient Temperature-Induced Visible Light Photocatalytic Hydrogen Production from Water
Bing Han, Yun Hang Hu
The Journal of Physical Chemistry C | AMER CHEMICAL SOC | Published : 2015
Intensive effort has led to numerous breakthroughs for photoprocesses. So far, however, energy conversion efficiency for the visible-light photocatalytic splitting of water is still very low. In this paper, we demonstrate (1) surface-diffuse-reflected-light can be 2 orders of magnitude more efficient than incident light for photocatalysis, (2) the inefficiency of absorbed visible light for the photocatalytic H2 production from water with a sacrificial agent is due to its kinetic limitation, and (3) the dispersion of black Pt/TiO2 catalyst on the light-diffuse-reflection-surface of a SiO2 substrate provides a possibility for exploiting a temperature higher than H2O boiling point to overcome t..View full abstract
Awarded by U.S. National Science Foundation
This work was supported by the U.S. National Science Foundation (NSF-CBET-0931587). Y.H.H. also thanks Charles and Carroll McArthur for their great support.