Journal
ACS NANO
Volume 5, Issue 8, Pages 6325-6333Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn201396v
Keywords
HOPG; TiO2; step decoration photodeposition; Ag; Pt
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Funding
- University of California, Irvine Center for Solar Energy
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-96ER45576]
- U.S. Department of Energy (DOE) [DE-FG02-96ER45576] Funding Source: U.S. Department of Energy (DOE)
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Ordered linear arrays of titanium dioxide nanoparticles were fabricated on highly oriented pyrolytic graphite utilizing a step edge decoration method. Ag- or Pt-based nanoparticles were then photodeposited onto the titanium dioxide nanoparticles (similar to 18 nm) to simultaneously, verify photocatalytic activity and to demonstrate a viable route to load the titanium dioxide nanoparticles with metals. Scanning electron microscopy and atomic force microscopy determined the morphology, size, and distribution of the particles. X-ray photoelectron spectroscopy confirmed the identity of the titanium dioxide nanoparticles, and transmission electron microscopy showed that some of the particles were rutile single crystals. Energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy determined the chemical composition of the metal-based nanoparticles selectively loaded on the linear arrays of titanium dioxide nanoparticles.
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