Green fabrication of La-doped NaTaO3 via H2O2 assisted sol-gel route for photocatalytic hydrogen production

▶ Nanosized and La doped NaTaO3 photocatalyst with high crystallinity can be successfully produced. ▶ These features of La-doped NaTaO3 facilitate charge separation and suppress the recombination. ▶ H2O2 helps form tantalum-peroxo to reduce the particle growth and the calcinations temperature. ▶ The route allows a lower calcination temperature and gives less organic byproducts. ▶ Crystallography analysis helps explain the effect of doping on the photocatalytic activity.