Photocatalytic degradation of 1,4-Benzoquinone in aqueous ZnO dispersions.
Abdollahi, Yadollah and Abdullah, Abdul Halim and Gaya, Umar I. and Ahmadzadeh, Saeid and Zakaria, Azmi and Shameli, Kamyar and Zainal, Zulkarnain and Jahangirian, Hossein and Yusof, Nor Azah (2012) Photocatalytic degradation of 1,4-Benzoquinone in aqueous ZnO dispersions. Journal of the Brazilian Chemical Society, 23 (2). pp. 236-240. ISSN 0103-5053; ESSN: 1678-4790
Official URL: http://jbcs.sbq.org.br/default.asp?ed=149
The present paper reports the UV-assisted degradation of 1,4-benzoquinone in ZnO suspensions. The variables studied include the concentration of 1,4-benzoquinone, photocatalyst, pH and the total organic carbon. The concentration of 1,4-benzoquinone and residue organic carbon were measured using UV-Visible spectrophotometer and TOC analyzer, respectively. The results showed that 1,4-benzoquinone photodegradation was independent of pH. The photoactivity of ZnO was maximum at 1.0 g L-1 concentration and at 100 mg L-1 1,4-benzoquinone levels. Within pH 4-10 more than 80% of 1,4-benzoquinone can be removed. ZnO has demonstrated reusability in the process.
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