Tags

Type your tag names separated by a space and hit enter

Mechanism of the anodic oxidation of 4-chloro-3-methyl phenol in aqueous solution using Ti/SnO2-Sb/PbO2 electrodes.
J Hazard Mater. 2010 Mar 15; 175(1-3):614-21.JH

Abstract

Electrochemical oxidation of 4-chloro-3-methyl phenol (CMP) was examined using Ti/SnO(2)-Sb/PbO(2) anodes. The physicochemical properties of the electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements. The degradation was studied by monitoring the total organic carbon (TOC) removal of CMP, and variation of the concentration of intermediates by high-performance liquid chromatography (HPLC), ion chromatography (IC) and gas chromatography/mass spectrometry (GC/MS). The mineralization of CMP is confirmed to be controlled by mass transfer or by both chemical reaction and mass transfer. Hydroxyl radicals (OH) and active chlorine on the electrode surface had a dominant role in the electro-oxidation process. The chloride element in CMP was immediately driven away from parent substance by OH attack, and then accelerated the ring cleavage of methyl-p-benzoquinone, which was formed during the anodic oxidation of CMP. Ultimately, the chlorine of CMP was mainly transformed to hypochlorite and chloride ion in aqueous solution. Additionally, formic acid and acetic acid were relatively stable products that were not electro-oxidized efficiently in our experiments. The degradation pathway of CMP is proposed on the basis of these results.

Authors+Show Affiliations

College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, People's Republic of China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo 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

19914775

Citation

Song, Shuang, et al. "Mechanism of the Anodic Oxidation of 4-chloro-3-methyl Phenol in Aqueous Solution Using Ti/SnO2-Sb/PbO2 Electrodes." Journal of Hazardous Materials, vol. 175, no. 1-3, 2010, pp. 614-21.
Song S, Zhan L, He Z, et al. Mechanism of the anodic oxidation of 4-chloro-3-methyl phenol in aqueous solution using Ti/SnO2-Sb/PbO2 electrodes. J Hazard Mater. 2010;175(1-3):614-21.
Song, S., Zhan, L., He, Z., Lin, L., Tu, J., Zhang, Z., Chen, J., & Xu, L. (2010). Mechanism of the anodic oxidation of 4-chloro-3-methyl phenol in aqueous solution using Ti/SnO2-Sb/PbO2 electrodes. Journal of Hazardous Materials, 175(1-3), 614-21. https://doi.org/10.1016/j.jhazmat.2009.10.051
Song S, et al. Mechanism of the Anodic Oxidation of 4-chloro-3-methyl Phenol in Aqueous Solution Using Ti/SnO2-Sb/PbO2 Electrodes. J Hazard Mater. 2010 Mar 15;175(1-3):614-21. PubMed PMID: 19914775.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mechanism of the anodic oxidation of 4-chloro-3-methyl phenol in aqueous solution using Ti/SnO2-Sb/PbO2 electrodes. AU - Song,Shuang, AU - Zhan,Liyong, AU - He,Zhiqiao, AU - Lin,Lili, AU - Tu,Jinjun, AU - Zhang,Zhehao, AU - Chen,Jianmeng, AU - Xu,Lejin, Y1 - 2009/10/22/ PY - 2009/04/20/received PY - 2009/09/15/revised PY - 2009/10/14/accepted PY - 2009/11/17/entrez PY - 2009/11/17/pubmed PY - 2010/4/30/medline SP - 614 EP - 21 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 175 IS - 1-3 N2 - Electrochemical oxidation of 4-chloro-3-methyl phenol (CMP) was examined using Ti/SnO(2)-Sb/PbO(2) anodes. The physicochemical properties of the electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurements. The degradation was studied by monitoring the total organic carbon (TOC) removal of CMP, and variation of the concentration of intermediates by high-performance liquid chromatography (HPLC), ion chromatography (IC) and gas chromatography/mass spectrometry (GC/MS). The mineralization of CMP is confirmed to be controlled by mass transfer or by both chemical reaction and mass transfer. Hydroxyl radicals (OH) and active chlorine on the electrode surface had a dominant role in the electro-oxidation process. The chloride element in CMP was immediately driven away from parent substance by OH attack, and then accelerated the ring cleavage of methyl-p-benzoquinone, which was formed during the anodic oxidation of CMP. Ultimately, the chlorine of CMP was mainly transformed to hypochlorite and chloride ion in aqueous solution. Additionally, formic acid and acetic acid were relatively stable products that were not electro-oxidized efficiently in our experiments. The degradation pathway of CMP is proposed on the basis of these results. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19914775/Mechanism_of_the_anodic_oxidation_of_4_chloro_3_methyl_phenol_in_aqueous_solution_using_Ti/SnO2_Sb/PbO2_electrodes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)01702-6 DB - PRIME DP - Unbound Medicine ER -