Preparation and Application of Mesoporous Nanotitania Photocatalysts Using Different Templates and pH Media

Joint Authors

Abdel-Mottaleb, Mohamed Sabry
Abdel-Azim, S. M.
Aboul-Gheit, A. K.
Ahmed, S. M.
El-Desouki, D. S.

Source

International Journal of Photoenergy

Issue

Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2014-02-03

Country of Publication

Egypt

No. of Pages

11

Main Subjects

Chemistry

Abstract EN

Mesoporous nanotitania photocatalysts were prepared by sol-gel method in acidic or basic media.

Three types of surfactants, namely, cetyltrimethylammonium bromide, sodium dodecylbenzenesulfonate, and nonylphenol ethoxylate, were used as templating agents.

The effects of surfactant type and pH on the morphology, particle size, surface area, pore-size distribution, UV-Vis absorbance, and TiO2 phase transformation were traced by SEM, TEM, BET, and XRD.

In absence of surfactants, XRD revealed 54.5% anatase at pH 3-4 and 97.0% at pH 7–9.

In presence of surfactant, phase transformation of anatase has been significantly inhibited such that anatase amounts to 82–100% in acidic media.

In basic media, the brookite phase appeared in low concentrations (8–15%) while rutile totally disappeared.

The photocatalytic performance of the synthesized catalysts was tested via naphthalene degradation, which exhibited high activity in visible irradiation (>400 nm).

The data obtained indicate that the surface area and pore volume of the current catalysts are the most effective factors for photocatalytic performance.

Nevertheless, at the low pH (acidic) range, the CTAB templated catalyst gave the highest surface area (86.7 cm3/g), which is mainly assigned to acquiring the highest photocatalytic degradation of naphthalene (97% after 4 h irradiation time).

American Psychological Association (APA)

Abdel-Azim, S. M.& Aboul-Gheit, A. K.& Ahmed, S. M.& El-Desouki, D. S.& Abdel-Mottaleb, Mohamed Sabry. 2014. Preparation and Application of Mesoporous Nanotitania Photocatalysts Using Different Templates and pH Media. International Journal of Photoenergy،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1037283

Modern Language Association (MLA)

Abdel-Azim, S. M.…[et al.]. Preparation and Application of Mesoporous Nanotitania Photocatalysts Using Different Templates and pH Media. International Journal of Photoenergy No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-1037283

American Medical Association (AMA)

Abdel-Azim, S. M.& Aboul-Gheit, A. K.& Ahmed, S. M.& El-Desouki, D. S.& Abdel-Mottaleb, Mohamed Sabry. Preparation and Application of Mesoporous Nanotitania Photocatalysts Using Different Templates and pH Media. International Journal of Photoenergy. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1037283

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1037283