Paper Title:
New Porous Visible Light Active Photocatalysts of MOx-Titanate (M = Cr, Ni) Nanohybrids
  Abstract

We have synthesized for the first time efficient visible light active photocatalysts of porous MOx-Ti1.83O4 (M = Ni, Cr) heterostructure through an exfoliation-restacking route. XRD, SEM, TEM, and XAS results reveal that the titanate nanosheets and the nanosized metal oxide particles are well ordered in layer-by-layer way. N2 adsorption-desorption isotherm and diffuse UV-vis spectroscopic analyses demonstrate that the present nanohybrids have a large surface area (~190-240 m2/g) and a narrow bandgap (~1.6-2.4 eV), which are ascribable to the formation of porous structure and a coupling of the wide bandgap titanate and the narrow bandgap metal oxide species, respectively. These nanohybrids show an enhanced photocatalytic activity to effectively decompose organic compounds under the irradiation of visible light. The present results highlight that the exfoliation-restacking route can provide a very powerful way of developing novel heterostructured materials with efficient visible light driven photocatalytic activity.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
779-786
DOI
10.4028/www.scientific.net/AST.45.779
Citation
S.J. Hwang, T.W. Kim, "New Porous Visible Light Active Photocatalysts of MOx-Titanate (M = Cr, Ni) Nanohybrids", Advances in Science and Technology, Vol. 45, pp. 779-786, 2006
Online since
October 2006
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jun Lee, Yoshihiro Sugi, Nam Jo Jeong, Gon Seo, Sung June Cho
Abstract:High surface area and uniform nano-sized TiO2 and ZrO2 were prepared readily by the infiltration of metal alkoxides into the nanoporous...
643
Authors: Jin Huan Li, Hong Bo Fang, Wei Wang, Gui Fan Liu, Shao Dong Zhang
Chapter 1: Material Science
Abstract:Nanocrystals with different Eu3+ doping levels (%) were prepared by sol-gel and hydrothermal synthetic method using titanium...
219
Authors: Yu Ming Tian, Yuan Yuan Zhao, Chang Wei Gong, Yue Sheng Chai
Chapter 2: Micro/Nano Materials and Equipments
Abstract:In order to restrain the recombination of electron-hole pairs of photocatalysis and induce the absorption spectra to shift to the visible...
203
Authors: Ghenadii Korotcenkov, B.K. Cho
Chapter 1: Advanced Materials Engineering and Processing Technologies
Abstract:In this review different aspects of material and structural engineering of metal oxides aimed for application in conductometric gas sensors...
76