title: Bioinspired hierarchical nanotubular titania immobilized with platinum nanoparticles for photocatalytic hydrogen production.
abstract: A bioinspired nanocomposite composed of platinum nanoparticles and nanotubular titania was fabricated in which the titania matter was templated by natural cellulose substance. The composite possesses three- dimensional hierarchical structures, and ultrafine metallic platinum particles with sizes of ca. 2 nm were immobilized uniformly on the surfaces of the titania nanotubes. Such a nanocomposite with 1.06 wt % of platinum content shows the optimal photocatalytic hydrogen production activity from water splitting of 16.44 mmol h(-1)  g(-1) , and excessive loading of platinum results in poorer photocatalytic performance. The structural integrity of the nanocomposite upon cyclic water-splitting processes results in its sufficient photocatalytic stability.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (P. R. China).
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Liu
authors.forename: Jiao
authors.initials: J
authors.lastname: Li
authors.forename: Yiming
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jianguo
authors.initials: J
authors.lastname: Huang
mesh_terms: D032701:Biomimetics; D002384:Catalysis; D006859:Hydrogen; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D010984:Platinum; D006859:Hydrogen; D014025:Titanium
keywords: biomimetic synthesis; platinum nanoparticles; thin films; titanium dioxide; water splitting