Title: Visible Light-Driven H2 Production over Highly Dispersed Ruthenia on Rutile TiO2 Nanorods

Journal Article · · ACS Catalysis
 [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
+ Show Author Affiliations

The immobilization of miniscule quantities of RuO2 (~0.1%) onto one-dimensional (1D) TiO2 nanorods (NRs) allows H2 evolution from water under visible light irradiation. In addition, rod-like rutile TiO2 structures, exposing preferentially (110) surfaces, are shown to be critical for the deposition of RuO2 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 RuO2(110) grown as 1D nanowires on rutile TiO2(110), which occurs only at extremely low loads of RuO2, 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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1335401
Report Number(s):
BNL-111843-2016-JA; KC0302010
Journal Information:
ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 1 Vol. 6; ISSN 2155-5435
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

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Engineering oxygen vacancy on rutile TiO2 for efficient electron-hole separation and high solar-driven photocatalytic hydrogen evolution journal February 2018
Manipulating the hydrogen evolution pathway on composition-tunable CuNi nanoalloys journal January 2017
Hybrid nanostructures of pit-rich TiO 2 nanocrystals with Ru loading and N doping for enhanced solar water splitting journal January 2019
Highly effective ruthenium-doped TiO 2 nanoparticles photocatalyst for visible-light-driven photocatalytic hydrogen production journal January 2019
Assembling of Bi atoms on TiO 2 nanorods boosts photoelectrochemical water splitting of semiconductors journal January 2020

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36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
H2 production
heterojunction
ruthenium
titanium
water splitting