Qinghua Lai - Nanocomposites of TiO2 and Reduced Graphene Oxide as Efficient Photocatalysts for Hydrogen Evolution

Version 1

      Publication Details (including relevant citation   information):

      Nanocomposites of titanium dioxide (P25) and reduced graphene   oxide (RGO), which were prepared by several techniques including   UV-assisted photocatalytic reduction, hydrazine reduction, and   hydrothermal method, were studied as photocatalysts for the   evolution of hydrogen from alcohol solution under UV–vis   irradiation

      J. Phys. Chem. C, 2011, 115 (21), pp 10694–10701 ( 106 citation)

      Abstract:

      Nanocomposites of titanium dioxide (P25) and reduced graphene   oxide (RGO), which were prepared by several techniques including   UV-assisted photocatalytic reduction, hydrazine reduction, and   hydrothermal method, were studied as photocatalysts for the   evolution of hydrogen from alcohol solution under UV–vis   irradiation. The incorporation of RGO into P25 significantly   enhanced the photocatalytic activity for H2 evolution, and the P25–RGO   composite prepared by the hydrothermal method exhibited the best   performance. The optimum mass ratio of P25 to RGO in the   composite was 1/0.2. The P25–RGO composite was stable and could   be used recyclably, and it could also catalyze the evolution of   H2 from pure   water. Our characterizations suggested that P25 nanoparticles   with diameters of 20–30 nm were dispersed on the RGO sheet in the   composite, and the stronger interaction between P25 and RGO   provided a better photocatalytic activity. The intimate contact   between P25 and RGO was proposed to accelerate the transfer of   photogenerated electrons on P25 to RGO, suppressing the   recombination of charge carriers and thus increasing the   photocatalytic performance.

      Address (URL): http://pubs.acs.org/doi/abs/10.1021/jp2008804