View : 36 Download: 0

Biomineralized N-doped CNT/TiO 2 core/shell nanowires for visible light photocatalysis

Title
Biomineralized N-doped CNT/TiO 2 core/shell nanowires for visible light photocatalysis
Authors
Lee W.J.Lee J.M.Kochuveedu S.T.Han T.H.Jeong H.Y.Park M.Yun J.M.Kwon J.No K.Kim D.H.Kim S.O.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2012
Journal Title
ACS Nano
ISSN
1936-0851JCR Link
Citation
vol. 6, no. 1, pp. 935 - 943
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We report an efficient and environmentally benign biomimetic mineralization of TiO 2 at the graphitic carbon surface, which successfully created an ideal TiO 2/carbon hybrid structure without any harsh surface treatment or interfacial adhesive layer. The N-doped sites at carbon nanotubes (CNTs) successfully nucleated the high-yield biomimetic deposition of a uniformly thick TiO 2 nanoshell in neutral pH aqueous media at ambient pressure and temperature and generated N-doped CNT (NCNT)/TiO 2 core/shell nanowires. Unlike previously known organic biomineralization templates, such as proteins or peptides, the electroconductive and high-temperature-stable NCNT backbone enabled high-temperature thermal treatment and corresponding crystal structure transformation of TiO 2 nanoshells into the anatase or rutile phase for optimized material properties. The direct contact of the NCNT surface and TiO 2 nanoshell without any adhesive interlayer introduced a new carbon energy level in the TiO 2 band gap and thereby effectively lowered the band gap energy. Consequently, the created core/shell nanowires showed a greatly enhanced visible light photocatalysis. Other interesting synergistic properties such as stimuli-responsive wettabilites were also demonstrated. © 2011 American Chemical Society.
DOI
10.1021/nn204504h
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE