title: Bioinspired Au/TiO2 photocatalyst derived from butterfly wing (Papilio Paris).
abstract: The reticular hierarchical structure of butterfly wings (Papilio Paris) is introduced as template for Au/TiO(2) photocatalyst by depositing the Au nanoparticles on TiO(2) matrix, which is carried out by a water-ethanol sol-gel procedure combined with subsequent calcination. The obtained Au/TiO(2) nanocomposites present the reticular hierarchical structure of butterfly wings, and Au nanoparticles with an average size of 7 nm are homogeneously dispersed in TiO(2) substrate. Benefiting from such unique reticular hierarchical structure and composition, the biomorphic Au/TiO(2) exhibits high-harvesting capability and presents superior photocatalytic activity. Especially, the biomorphic Au/TiO(2) at the nominal content of gold to titanium of 8 wt% shows the highest photocatalytic activity and can completely decompose methyl orange within 80 min, which is obviously higher than that of commercial Degussa P25 powders.
authors.affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Chen
authors.forename: Huilan
authors.initials: H
authors.lastname: Su
authors.forename: Fang
authors.initials: F
authors.lastname: Song
authors.forename: Won-Jin
authors.initials: WJ
authors.lastname: Moon
authors.forename: Yang-Soo
authors.initials: YS
authors.lastname: Kim
authors.forename: Di
authors.initials: D
authors.lastname: Zhang
mesh_terms: D000818:Animals; D040761:Biomimetic Materials / Q000737:chemistry; D002080:Butterflies; D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D055668:Photochemical Processes; D014025:Titanium / Q000737:chemistry* / Q000302:isolation & purification*; D014921:Wings, Animal / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: C009495:titanium dioxide; D006046:Gold; D014025:Titanium