Visible Light Photocatalytic Activity of Pt/N‐TiO 2 towards Enhanced H 2 Production from Water Splitting

Present work mainly focuses on experimental investigation to improvement of hydrogen production by water photoelectrolysis. An experimental facility was designed and constructed for visible light photocatalysis. A series of N‐TiO 2 photocatalysts impregnated with platinum on the surface of N‐TiO 2 were prepared. Hydrogen production upon irradiating aqueous Pt/N‐TiO 2 suspension with visible light was investigated. The shift in excitation wavelength of TiO 2 was 380 nm improved the yield of hydrogen production by N‐TiO 2 and Pt/N‐TiO 2 . We used a 400 W mercury arc lamp combined with a 400 nm cutoff filter eliminating all the wavelengths under 400 nm. Pt/N‐TiO 2 material was characterized with TPR, reflective UV/Visible spectroscopy and TEM. The best hydrogen production rate obtained for this setup for N/Ti = 10, 0.05 wt% Pt/N‐TiO 2 , through water splitting was about 772 μmolh −1 g −1 .