New insight for enhancing photocatalytic activity of MWCNT/TiO{sub 2} by decorating palladium nanoparticles as charge-transfer channel

Journal Article · Thu Mar 15 04:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.12.031· OSTI ID:22212447

Zhang, Feng-Jun ^[1]; Oh, Won-Chun ^[2]; Zhang, Kan ^[2]

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1. School of Materials and Chemical Engineering, Anhui University of Architecture, Anhui Hefei 230022 (China)
2. Department of Advanced Materials and Science Engineering, Hanseo University, Seosan-si, Chungnam-do 356-706 (Korea, Republic of)

Highlights: Black-Right-Pointing-Pointer A new insight for further improving photoactivity of MWCNT/TiO{sub 2} was reported. Black-Right-Pointing-Pointer The Pd as charge transfer channel trap electrons from MWCNT to TiO{sub 2} surface. Black-Right-Pointing-Pointer The Pd content can also influence photoactivity of MWCNT/TiO{sub 2} photocatalyst. Black-Right-Pointing-Pointer The approach is practically usable for other nanocarbon/semiconductor materials. -- Abstract: A surface bond-grafted multi-walled carbon nanotube (MWCNT)/TiO{sub 2} as supporter, palladium nanoparticles, approximately 3 nm in diameter, are uniformly deposited on the functional MWCNT surface in first, constructing a novel Pd-MWCNT/TiO{sub 2} photocatalyst for photocatalytic solar conversion. The characterization of photocatalysts by a series of joint techniques, including BET surface area, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX), Raman spectroscopy and ultraviolet/visible (UV/vis) diffuse reflectance spectra, discloses that palladium nanoparticles has a crucial role in enhancement of photocatalytic activity of MWCNT/TiO{sub 2}, that is to act as a charge transfer channel, which helps to trap electrons from MWCNT to TiO{sub 2}.

• OSTI ID: 22212447
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 47; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
DEPOSITS
ELECTRONS
PALLADIUM
PARTICLES
PHOTOCATALYSIS
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SURFACE AREA
SURFACES
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
X-RAY DIFFRACTION