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Kinetic study on the photocatalytic degradation of salicylic acid using ZnO catalyst.
J Hazard Mater. 2009 Jul 30; 166(2-3):1357-61.JH

Abstract

The photocatalytic degradation of salicylic acid was studied by a batch process using ZnO as the catalyst on irradiation with UV light. The effect of process parameters such as pH, catalyst loading and initial concentration of salicylic acid on the extent of degradation was investigated. The degradation of salicylic acid was found to be effective in the neutral pH range. The optimum catalyst loading was observed at 2.0 g/L. The process followed first order kinetics and the apparent rate constant decreased with increase in the initial concentration of salicylic acid. The mechanism for the degradation of salicylic acid could be explained on the basis of Langmuir-Hinshelwood mechanism. The complete mineralization of salicylic acid was observed in the presence of ZnO photocatalyst. The ZnO was found to be quite stable and undergoes photocorrosion only to a negligible extent.

Authors+Show Affiliations

Department of Chemistry, Sathyabama University, Old Mahabalipuram Road, Chennai 600119, Tamil Nadu, India. raoankem@rediffmail.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19150585

Citation

Rao, A Nageswara, et al. "Kinetic Study On the Photocatalytic Degradation of Salicylic Acid Using ZnO Catalyst." Journal of Hazardous Materials, vol. 166, no. 2-3, 2009, pp. 1357-61.
Rao AN, Sivasankar B, Sadasivam V. Kinetic study on the photocatalytic degradation of salicylic acid using ZnO catalyst. J Hazard Mater. 2009;166(2-3):1357-61.
Rao, A. N., Sivasankar, B., & Sadasivam, V. (2009). Kinetic study on the photocatalytic degradation of salicylic acid using ZnO catalyst. Journal of Hazardous Materials, 166(2-3), 1357-61. https://doi.org/10.1016/j.jhazmat.2008.12.051
Rao AN, Sivasankar B, Sadasivam V. Kinetic Study On the Photocatalytic Degradation of Salicylic Acid Using ZnO Catalyst. J Hazard Mater. 2009 Jul 30;166(2-3):1357-61. PubMed PMID: 19150585.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Kinetic study on the photocatalytic degradation of salicylic acid using ZnO catalyst. AU - Rao,A Nageswara, AU - Sivasankar,B, AU - Sadasivam,V, Y1 - 2008/12/14/ PY - 2008/07/30/received PY - 2008/11/18/revised PY - 2008/12/09/accepted PY - 2009/1/20/entrez PY - 2009/1/20/pubmed PY - 2009/8/6/medline SP - 1357 EP - 61 JF - Journal of hazardous materials JO - J Hazard Mater VL - 166 IS - 2-3 N2 - The photocatalytic degradation of salicylic acid was studied by a batch process using ZnO as the catalyst on irradiation with UV light. The effect of process parameters such as pH, catalyst loading and initial concentration of salicylic acid on the extent of degradation was investigated. The degradation of salicylic acid was found to be effective in the neutral pH range. The optimum catalyst loading was observed at 2.0 g/L. The process followed first order kinetics and the apparent rate constant decreased with increase in the initial concentration of salicylic acid. The mechanism for the degradation of salicylic acid could be explained on the basis of Langmuir-Hinshelwood mechanism. The complete mineralization of salicylic acid was observed in the presence of ZnO photocatalyst. The ZnO was found to be quite stable and undergoes photocorrosion only to a negligible extent. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19150585/Kinetic_study_on_the_photocatalytic_degradation_of_salicylic_acid_using_ZnO_catalyst_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01905-5 DB - PRIME DP - Unbound Medicine ER -