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Photocatalytic degradation of resorcinol, an endocrine disrupter, by TiO2 and ZnO suspensions.
Environ Technol. 2013 May-Jun; 34(9-12):1097-106.ET

Abstract

In the work presented here, photocatalytic systems using TiO2 and ZnO suspensions were utilized to evaluate the degradation of resorcinol (ReOH). The effects of catalyst concentration and solution pH were investigated and optimized using multivariate analysis based on response surface methodology. The results indicated that ZnO showed greater degradation and mineralization activities compared to TiO2 under optimized conditions. Using certain radical scavengers, a positive hole, together with the participation of hydroxyl radicals, were the oxidative species responsible for ReOH degradation on TiO2 whereas, the ZnO photocatalysis occurred principally via hydroxyl radicals. Some hitherto unreported pathway intermediates of ReOH degradation were identified using gas chromatography-mass spectrometry. A tentative reaction mechanism for the formation of these intermediates was proposed. Moreover, the figure-of-merit electrical energy per order was employed to estimate the electrical energy consumption.

Authors+Show Affiliations

School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Pulau Pinang, Malaysia.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24191441

Citation

Lam, Sze-Mun, et al. "Photocatalytic Degradation of Resorcinol, an Endocrine Disrupter, By TiO2 and ZnO Suspensions." Environmental Technology, vol. 34, no. 9-12, 2013, pp. 1097-106.
Lam SM, Sin JC, Abdullah AZ, et al. Photocatalytic degradation of resorcinol, an endocrine disrupter, by TiO2 and ZnO suspensions. Environ Technol. 2013;34(9-12):1097-106.
Lam, S. M., Sin, J. C., Abdullah, A. Z., & Mohamed, A. R. (2013). Photocatalytic degradation of resorcinol, an endocrine disrupter, by TiO2 and ZnO suspensions. Environmental Technology, 34(9-12), 1097-106.
Lam SM, et al. Photocatalytic Degradation of Resorcinol, an Endocrine Disrupter, By TiO2 and ZnO Suspensions. Environ Technol. 2013 May-Jun;34(9-12):1097-106. PubMed PMID: 24191441.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic degradation of resorcinol, an endocrine disrupter, by TiO2 and ZnO suspensions. AU - Lam,Sze-Mun, AU - Sin,Jin-Chung, AU - Abdullah,Ahmad Zuhairi, AU - Mohamed,Abdul Rahman, PY - 2013/11/7/entrez PY - 2013/11/7/pubmed PY - 2013/12/16/medline SP - 1097 EP - 106 JF - Environmental technology JO - Environ Technol VL - 34 IS - 9-12 N2 - In the work presented here, photocatalytic systems using TiO2 and ZnO suspensions were utilized to evaluate the degradation of resorcinol (ReOH). The effects of catalyst concentration and solution pH were investigated and optimized using multivariate analysis based on response surface methodology. The results indicated that ZnO showed greater degradation and mineralization activities compared to TiO2 under optimized conditions. Using certain radical scavengers, a positive hole, together with the participation of hydroxyl radicals, were the oxidative species responsible for ReOH degradation on TiO2 whereas, the ZnO photocatalysis occurred principally via hydroxyl radicals. Some hitherto unreported pathway intermediates of ReOH degradation were identified using gas chromatography-mass spectrometry. A tentative reaction mechanism for the formation of these intermediates was proposed. Moreover, the figure-of-merit electrical energy per order was employed to estimate the electrical energy consumption. SN - 0959-3330 UR - https://www.unboundmedicine.com/medline/citation/24191441/Photocatalytic_degradation_of_resorcinol_an_endocrine_disrupter_by_TiO2_and_ZnO_suspensions_ L2 - https://www.tandfonline.com/doi/full/10.1080/09593330.2012.736538 DB - PRIME DP - Unbound Medicine ER -