Effects of pH Value and Water Content of Sol on TiO2 Photocatalytic Activity Prepared by SAS

Zai Feng Shi; Su Min Zhang; Su Guo

doi:10.4028/www.scientific.net/AMR.774-776.864

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 774-776Effects of pH Value and Water Content of Sol on...

Effects of pH Value and Water Content of Sol on TiO₂ Photocatalytic Activity Prepared by SAS

Abstract:

To investigate the effects of sol pH value and water content on photocatalytic activity of TiO₂ prepared with sol-gel auto-igniting synthesis (SAS) method, TiO(NO₃)₂ was prepared with TiCl₄ as raw material and used as precursor of TiO₂. By changing sol pH value and water content, different TiO₂ powders were prepared and characterized with XRD, SEM and photodegradation of methylene blue (MB). Results indicated that TiO₂ presented the highest photocatalytic activity while sol pH value and mass fraction of water were adjusted to 7 and 50% respectively while the mole ratio of n (TiCl₄): n (citric acid): n (ammonium nitrate) was fixed as 1: 1: 3. The TiO₂ powders were confirmed as loose and porous anatase type with particle size of 15 nm by SEM and XRD.

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Periodical:

Advanced Materials Research (Volumes 774-776)

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864-867

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.774-776.864

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Online since:

September 2013

Authors:

Zai Feng Shi, Su Min Zhang, Su Guo

Keywords:

Ceramic, Film, Glass, Stainless Steel (SS), TiO₂

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