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- In relation to this article, we declare that there is no conflict of interest.
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Received October 15, 2014
Accepted November 13, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Photodegradation of formaldehyde by activated carbon loading TiO2 synthesized via microwave irradiation
School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
wuzhans@126.com
Korean Journal of Chemical Engineering, July 2015, 32(7), 1333-1339(7), 10.1007/s11814-014-0338-2
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Abstract
A microwave-assisted synthetic method to form a series of AC/TiO2 for application as photocatalytic degradation of formaldehyde (HCHO) is presented. The influence of prepared conditions such as microwave power, microwave time, and the ratio of activated carbon and titanium dioxide sol (AC/TiO2-sel) on the degradation of HCHO was investigated. HCHO conversion of 58.68% was achieved by AC/TiO2 at microwave power of 700W for 15 min with AC/TiO2-sel ratio of 1 : 2, which maintained multiple properties including high content of anatase and TiO2 largely distributed on AC without reunion, and possessed abundant functional groups for degradation. The influence of operation parameters on the degradation was also investigated: increasing dosage of catalyst and decreasing the initial concentration of HCHO could increase the conversion of HCHO. Acidic conditions can promote degradation effect. Stronger intensity of UV irradiating could improve efficiency of photocatalytic conversion of HCHO.
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