|Table of Contents|

Synthesis and Photocatalytic Performance of Mesoporous TiO2(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2009年01期
Page:
62-67
Research Field:
化学
Publishing date:

Info

Title:
Synthesis and Photocatalytic Performance of Mesoporous TiO2
Author(s):
Liu Hongxia; Yang Chun
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
Keywords:
m esoporous TiO2;  rem ova l o f temp la te;  photocata ly sis
PACS:
O643.36
DOI:
-
Abstract:
Them esoporous T iO2 w as synthesized by using T iC l4 and titanium isopropox ide as the T i precursors and P123 as a temp la te, fo llowed by calc ination o r re flux w ith ethano l to rem ove tem plate. The sam ples w ere characterized by BET, TEM, XRD and TG-DTA techn iques. The photo ca talytic degradation o fm e thy l o rang e, a w ater-so luble azo-dye, ca talyzed by these T iO2 sam ples w as also inv estig ated. The results indicate tha t mesostructure can be form ed upon the ca lcina tion, and ana tase crysta l phase is ob tained when the sam ple is ca lcined at 380℃ fo r 6 h. H owever them esostruc-ture and the anatase cry sta l phase canno t be form ed on the reflux ed sam ple, in wh ich the tem plate cannot be rem oved thoroughly. In the pho to-degrada tion o fm ethyl orange, the crysta lline sta te ra ther than the m esostructure o fT iO2 plays a v ita l role fo r the ca talysis activ ity. M esopo rous T iO2 w ith anatase crysta l phase possesses very h igh photocata lysis activ i ty, wh ich is com pa rable w ith P25 pho to ca talyst.

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Last Update: 2013-04-23