Preparation and Hydrogen Production Performance of Ni-modified Octahedral TiO2 Nanoparticles
TiO2 has been widely used in the study of photocatalytic hydrogen production because of its excellent photocatalytic activity.Octahedral TiO2 nanoparticles were synthesized by using a one-step hydrothermal method with potassium titanate nanowires as raw materials in NH4Cl and NH3·H2O mixed solutions.The synthesized octahedral TiO2 nanoparticles has high crystallinity and uniformity.Various contents of Ni were deposited on surface of the TiO2 nanoparticles by using light deposition technology.It is experimentally found that the modification of Ni can significantly inhibit the recombination of photogenerated electron and holes,thus greatly improving the efficiency of hydrogen production.When the modification content of Ni is 3 wt.%,the hydrogen production efficiency of photolysis water is optimized,with the hydrogen production rate reaching 2.11 mmol·g-1 within 1 h.
TiO2photocatalysishydrogen production by hydrolysisNi modification
NETL
NSTL
万方数据
