A Novel Synthesis of Rod-Shape BaNiSn-Graphene Decorated TiO2 Composite as a Ternary Photocatalyst to Improve Visible-Light Driven H2 Evolution with Lactic Acid and TEA

A novel rod-shape BaNiSn-Graphene oxide decorated TiO2 composite (BaNiSn-GT) has been synthesized using a simple ultrasonic method to enhance the visible-light-driven H2 evolution with cationic scavengers. The unique structure between interfaces of and provides graphene contact excellent electron transfer for activity. BaNiSn-GT ternary photocatalyst exhibits relatively high photocatalytic activity hydrogen rate 1012 μmol/g during 4 h. On other hand, exhibited significantly higher rates 870 TEA scavenger 730 LA 1 h, respectively. Moreover, photocurrent density is correlated electron–hole recombination, providing evidence its inhibition, which leads longer lifetime carriers produced by photoelectrons. mechanism based on full physicochemical characterization was proposed. This study new insight into efficient hydrogen-evolution graphene-based photocatalysts.