Sol-gel synthesis of mesoporous hollow titania microspheres for photodegradation of 4-chlorophenol
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Sol-gel synthesis of mesoporous hollow titania microspheres for photodegradation of 4-chlorophenol
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| Creator |
Chowdhury, Ipsita Hazra
Naskar, Milan Kanti |
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| Subject |
Mesoporous materials
Sol-gel method Microspheres Microstructures Photocatalysis Titania |
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| Description |
910-914
Mesoporous titania (TiO<sub>2</sub>) hollow microspheres have been prepared by sol-gel method and characterized by XRD, Raman, FTIR, N<sub>2</sub> adsorption-desorption study, FESEM, TEM and UV-DRS. The FESEM images reveal hollow spherical shaped particles of size 2–4 µm. The BET surface area, total pore volume and average pore diameter of 400 °C-treated sample are found to be 74.52 m<sup>2</sup> g<sup>-1</sup>, 0.23 cm<sup>3</sup> g<sup>-1</sup> and 12.37 nm, respectively. The band gap energy of the product is calculated as 3.06 eV. The prepared TiO<sub>2</sub> hollow spheres show ~90% photodegradation of the water pollutant, 4-chlorophenol, within 1 h. The photocatalytic reaction shows pseudo-first order reaction with a rate constant of 0.027 min<sup>-1</sup>. The photocatalytic experiments repeated for another three cycles showed no significant changes in the <em>k</em> (min<sup>-1</sup>) values, indicating the potential reusability of the material. |
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| Date |
2018-07-23T05:44:37Z
2018-07-23T05:44:37Z 2018-07 |
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| Type |
Article
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/44740 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJC-A Vol.57A(07) [July 2018]
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