title: Pt-Decorated g-C3N4/TiO2Nanotube Arrays with Enhanced Visible-Light Photocatalytic Activity for H2Evolution.
abstract: Aligned TiO2nanotube layers (TiNTs) grown by self-organizing anodization of a Ti-substrate in a fluoride-based electrolyte were decorated with graphitic-phase C3N4(g-C3N4) via a facile chemical vapor deposition approach. In comparison with classical TiO2nanotubes (anatase), the g-C3N4/TiNTs show an onset of the photocurrent at 2.4 eV (vs. 3.2 eV for anatase) with a considerably high photocurrent magnitude in the visible range. After further decoration with Pt nanoparticles, we obtained a visible-light responsive platform that showed, compared with g-C3N4-free TiNTs, a strong enhancement for photoelectrochemical and bias-free H2evolution (15.62 μLh-1cm-2), which was almost a 98-fold increase in the H2production rate of TiNTs (0.16 μLh-1cm-2). In a wider context, the g-C3N4-combined 3 D nanoporous/nanotubular structure thus provides a platform with significant visible-light response in photocatalytic applications.
authors.affiliation: College of Sciences Northeastern University Shenyang 110004 P. R. China.
authors.forename: Zhi-Da
authors.initials: ZD
authors.lastname: Gao
authors.affiliation: College of Sciences Northeastern University Shenyang 110004 P. R. China.
authors.forename: Yong-Fang
authors.initials: YF
authors.lastname: Qu
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO University of Erlangen-Nuremberg Martensstrasse 7 Erlangen 91058 Germany.
authors.forename: Xuemei
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO University of Erlangen-Nuremberg Martensstrasse 7 Erlangen 91058 Germany.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: College of Sciences Northeastern University Shenyang 110004 P. R. China.
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Song
authors.affiliation: Department of Materials Science and Engineering, WW4-LKO University of Erlangen-Nuremberg Martensstrasse 7 Erlangen 91058 Germany; Department of Chemistry Faculty of Science King Abdulaziz University Jeddah 21569 Saudi Arabia.
authors.forename: Patrik
authors.initials: P
authors.lastname: Schmuki
keywords: TiO2 nanotubes; graphitic carbon nitride; hydrogen evolution; photocatalysis; visible light