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Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties

Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase tur...

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Main Authors: -, Nor Hafizah, Sopyan, Iis
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2009
Subjects:
TS Manufactures
Online Access:http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf
http://irep.iium.edu.my/11417/
http://www.hindawi.com/journals/ijp/
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spelling my.iium.irep.114172012-03-22T03:45:30Z http://irep.iium.edu.my/11417/ Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties -, Nor Hafizah Sopyan, Iis TS Manufactures Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity. Hindawi Publishing Corporation 2009 Article REM application/pdf en http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf -, Nor Hafizah and Sopyan, Iis (2009) Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties. International Journal of Photoenergy, 2009. pp. 1-8. ISSN 1687-529X http://www.hindawi.com/journals/ijp/
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TS Manufactures
spellingShingle TS Manufactures
-, Nor Hafizah
Sopyan, Iis
Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
description Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity.
format Article
author -, Nor Hafizah
Sopyan, Iis
author_facet -, Nor Hafizah
Sopyan, Iis
author_sort -, Nor Hafizah
title Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
title_short Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
title_full Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
title_fullStr Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
title_full_unstemmed Nanosized TiO2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
title_sort nanosized tio2 photocatalyst powder via sol-gel method: effect of hydrolysis degree on powder properties
publisher Hindawi Publishing Corporation
publishDate 2009
url http://irep.iium.edu.my/11417/4/NanosizedTiO2_photocatalyst_.pdf
http://irep.iium.edu.my/11417/
http://www.hindawi.com/journals/ijp/
_version_ 1643606494290116608
score 13.211869

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