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Title: Visible Light-Driven H 2 Production over Highly Dispersed Ruthenia on Rutile TiO 2 Nanorods

The immobilization of miniscule quantities of RuO 2 (~0.1%) onto one-dimensional (1D) TiO 2 nanorods (NRs) allows H 2 evolution from water under visible light irradiation. In addition, rod-like rutile TiO 2 structures, exposing preferentially (110) surfaces, are shown to be critical for the deposition of RuO 2 to enable photocatalytic activity in the visible region. The superior performance is rationalized on the basis of fundamental experimental studies and theoretical calculations, demonstrating that RuO 2(110) grown as 1D nanowires on rutile TiO 2(110), which occurs only at extremely low loads of RuO 2, leads to the formation of a heterointerface that efficiently adsorbs visible light. The surface defects, band gap narrowing, visible photoresponse, and favorable upward band bending at the heterointerface drastically facilitate the transfer and separation of photogenerated charge carriers.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6] ;  [7] ;  [8] ;  [6] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Department
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Department ; Stony Brook Univ., NY (United States). Dept. of Chemistry
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Department ; Stony Brook Univ., NY (United States). Dept. of Chemistry
  4. Universitat Politecnica de Catalunya, Barcelona (Spain). Institute of Energy Technologies and Centre for Research in NanoEngineering
  5. University of Seville (Spain). Department of Physical Chemistry
  6. Binghamton Univ., NY (United States). Materials Science and Engineering
  7. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
  8. Brookhaven National Lab. (BNL), Upton, NY (United States). Photon Sciences Division
Publication Date:
Report Number(s):
BNL-111843-2016-JA
Journal ID: ISSN 2155-5435; R&D Project: CO009; KC0302010
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 6; Journal Issue: 1; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; H2 production; heterojunction; ruthenium; titanium; water splitting
OSTI Identifier:
1335401