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Shin, Hyeon Suk
Lab for Carbon and 2D Materials
Research Interests
  • Two-dimensional materials: graphene, transition metal dichalcogenides, h-BN, and their heterostructures

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Photoinduced self-assembly of TiO2 and SiO2 nanoparticles on sidewalls of single-walled carbon nanotubes

Cited 24 times inthomson ciCited 24 times inthomson ci
Title
Photoinduced self-assembly of TiO2 and SiO2 nanoparticles on sidewalls of single-walled carbon nanotubes
Author
Shin, Hyeon SukJang, Yeon SuLee, YoonmiJung, YeonwookKim, Seung BinChoi, Hee Cheul
Keywords
SILICON; OXIDE; COMPOSITES; DEPOSITION; FIBERS
Issue Date
2007-10
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED MATERIALS, v.19, no.19, pp.2873 - +
Abstract
Highly selective self-assembly of TiO2 and SiO2 nanoparticles (NP) on the sidewalls carbon nanotubes (SWNT) by a simple UV irradiation in aqueous media without using organic molecules were reported. SWNT were grown on Si wafers from Fe ion coated TiO2 NP catalysts by using chemical vapor deposition (CVD) method. The results show that the surface of SWNT is positively charged due to the increased hole concentration in SWNTs, which are induced by negative charges built on the underneath p-tupe Si upon UV irradiation. The NPs are not found to posses a self-assembly when the sample is not irradiated and when pH of the reaction solution is kept at 1 to alter the surface charges of NPs. The results also show that the self-assembly of TiO 2 NOs are also achieved by using externally provided NPs.
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DOI
10.1002/adma.200602660
ISSN
0935-9648
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PHY_Journal Papers
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