Boosting up the Low Catalytic Activity of Silver for H2 Production on Ag/TiO2 Photocatalyst: Thiocyanate as a Selective Modifier
By Choi, Yeoseon; Kim, Hyoung-il; Moon, Gun-hee; Jo, Seongwon; Choi, Wonyong
Published in ACS Catalysis
2016
Abstract
Noble metal cocatalysts like Pt have been widely employed as an essential ingredient in many kinds of photocatalytic materials for solar hydrogen production. The high material cost of Pt is the biggest limitation. Silver is far less expensive but much less active than Pt and Au as a hydrogen evolving catalyst. Here we demonstrate a new strategy to boost up the activity of silver in Ag/TiO2 for photocatalytic H2 production via forming a simple surface complexation of thiocyanate (SCN