A photocatalytic decomposing water
hydrogen production material CdS / Sr1.6Zn0.4Nb2O7 is a catalyst having a
heterojunction structure formed by loading CdS on Sr1.6Zn0.4Nb2O7. The inventive catalyst is prepared by a hydrothermal method through
sol gel. When a
molar ratio of the CdS and the Sr1.6Zn0.4Nb2O7 is 3:7, the expression is 30%CdS / Sr1.6Zn0.4Nb2O7, and the
catalytic effect of the material is best. Under the illumination of a 300
watt xenon lamp, Na2S / Na2SO3 is taken as a sacrifice
reagent, the inventive material 30%CdS / Sr1.6Zn0.4Nb2O7 photocatalyzes and decomposes the water to produce the
hydrogen without a co-catalyst of
noble metal, and the efficiency is 645.7 mu mol.h<-1>.g<-1>. The photocatalytic decomposing water
hydrogen production material of the invention has the advantages that: 1 the inventive catalyst is directly synthesized by the hydrothermal method through
sol gel, the operation is simple, the production cost is low, the synthetic yield is higher, the purity is high and the
repeatability is good, and the inventive catalyst is suitable for the demand of
magnification production; 2, the inventive catalyst is good in the stability and is easy to reuse; and 3, the inventive catalyst has higher photocatalytic
hydrogen production efficiency.