Electrochemical Oxidation of Dimethyl Phthalate on Porous Titanium Based Boron-dopped Diamond Electrode†

doi:10.7503/cjcu20150069

Abstract

Abstract:

The effect of structure of the titanium substrate on the electrocatalytic activity of boron-dopped diamond film(BDD) electrode was studied with dimethyl phthalate(DMP) as an organic pollutant mode. 3D porous Ti/BDD electrode can provide more reactive sites for the electrochemical reaction and has faster electron transfer rate compared with planar Ti/BDD electrode. The electrooxidation behavior of DMP on BDD electrodes is direct oxidation based on the results of cyclic voltammetry and liner sweep curves and presented pseudo first-order kinetic at low DMP concentration. Meanwhile, the formation of polymer film was observed at high DMP concentration. Due to the high active area, 3D porous Ti/BDD electrode revealed superior performance in the direct electrooxidation of DMP. In terms of chemical oxygen demand(COD) and removal rate when employing different concentrations of DMP, the experimental results on planar Ti/BDD and 3D-Ti/BDD electrodes coincided with the theory proposed.

Key words: Three-dimensional porous titanium substrate, Boron-doped diamond film electrode, Dimethyl phthalate, Electrochemical oxidation

CLC Number:

O646

TrendMD:

LIANG Longqi, HUANG Weimin, LIN Haibo. Electrochemical Oxidation of Dimethyl Phthalate on Porous Titanium Based Boron-dopped Diamond Electrode^†[J]. Chem. J. Chinese Universities, 2015, 36(8): 1606.

Figures/Tables 6

Fig.1 Cyclic voltammograms of planar Ti/BPP electrode(A) and porous Ti/BDD electrode(B) in 1 mol/L KCl solution with different concentrations of [Fe(CN)6]3-/4-Concentration of [Fe(CN)6]3-/4-/(mol·L-1): a. 5; b. 10; c. 20; d. 30.

Fig.2 Cyclic voltammograms of planar Ti/BDD electrodes at scan rate of 100 mV/s in 0.5 mol/L H2SO4 containing 100 mg/L DMPa. The 1st cycle; b. the 5th cycle.

Fig.3 Linear sweep voltammograms of a planar Ti/BDD electrode in 0.5 mol/L H2SO4 solution containing 100 mg/L DMP at different scan rates(A) and the relationship between response current density and square root of scan rate(B)The scan rates are 20, 100, 200, 400, 600, 800 and 1000 mV/s with the direction of the arrow.

Fig.4 Linear sweep voltammograms of planar Ti/BDD electrode in 0.5 mol/L H2SO4 solution containing different concentrations of DMP(A) and relationship between response current density and DMP concentration(B)The concentration of DMP is 15, 20, 25, 30, 35 and 40 mmol/L with the direction of the arrow.

Fig.5 Change of COD value during the degradation of DMP at planar Ti/BDD(A) and porous Ti/BDD anodes(B)Concentration of DMP/(mg·L-1): a. 20; b. 40; c.60.

Fig.6 Change of concentration of DMP during degradation using planar Ti/BDD(A) and porous Ti/BDD anodes(B)Concentration of DMP/(mg·L-1): a. 20; b. 40; c.60.The insets show the relationship between value of ln(c0/ct) and time.

References 25

[1]	Giam C. S., Chan H. S., Neff. G. S., Atlas E. L., Science, 1978, 199(4327), 419—421
[2]	Baikova S. V., Samsonova A. S., Aleshchenkova Z. M., Shcherbina A. N., Eurasian Soil Sci., 1999, 32, 701—704
[3]	Hou Y. N., Qu J. H., Zhan X., Liu H. J., J. Environ. Sci., 2009, 21, 1321—1328
[4]	Yin X. T., Xu Q., Wu S. Y., Wang M., Gu Z. Z., Chem. J. Chinese Universities, 2010, 31(4), 690—695
	(殷雪琰, 许茜, 吴淑燕, 王敏, 顾忠泽. 高等学校化学学报, 2010, 31(4), 690—695)
[5]	Wolf C., Lanbright C., Mann P., Price M., Cooper R. L., Ostby J., Gray L. E., Toxicol. Ind. Health, 1999, 15(1/2), 94—118
[6]	Zacharewski T. R., Meek M. D., Clemons J. H., Wu Z. F., Fielden M. R., Matthews J. B., Toxicolo. Sci., 1998, 46(2), 282—293
[7]	Jobling S., Reynolds T., White R., Parker M. G., Sumper J. P., Environ.Health Persp., 1995, 103(6), 582—587
[8]	Stales C. A., Peterson D. R., Parkerton T. F., Adams W. J., Chemosphere, 1997, 35(4), 667—749
[9]	Rodgers J. D., Jedral W., Bunce N. J., Enviro. Sci. Tech., 1999, 33(9), 1453—1457
[10]	Wu M. H., Liu N., Xu G., Ma J., Tang L., Wang L., Fu H. Y., Radiat. Phys. Chem., 2011, 80(3), 420—425
[11]	Torres R. A., Torres W., Periger P., Pulgarin C., Chemosphere, 2003, 50(1), 97—104
[12]	Brillas E., Boye B., Sires J., Garrido J. A., Rodriguez R. M., Arias C., Cabot P., Chemosphere, 2004, 49(25), 4487—4496
[13]	Chen X., Chen G., Gao F., Yue L. P., Environ. Sci. Technol., 2003, 37, 5021—5026
[14]	Iniesta J., Michaud P. A., Panizza M., Cerisola G., Aldaz A., Comninellis C., Electrochim. Acta, 2001, 46(23), 3573—3578
[15]	Rodrigo M. A., Michaud P. A., Duo I., Panizza M., Cerisola G., J. Electrochem. Soc., 2001, 148(5), D60—D64
[16]	Panizza M., Michaud P. A., Cerosola G., Comninellis C., J. Electroanal. Chem., 2001, 507(1/2), 206—214
[17]	Canizares P., Saez C., Lobato J., Rodrigo M. A., Ind. Eng. Chem. Res., 2004, 43(9), 1944—1951
[18]	Montilla F., Michaud P. A., Morallon E., Vazquez J. L., Comninellis C., Electrochim. Acta, 2002, 47(21), 3509—3513
[19]	Canizares P., Garcia-Gomez J., Lobato J., Rodrigo M. A., Ind. Eng. Chem. Res., 2003, 42(5), 956—962
[20]	Braga N. A., Baldan M. R., Ferreira N. G. J. Mater. Sci., 2012, 47, 23—40
[21]	Canizares P., Saez C., Lobato J., Paz R., Rodrigo M. A., J. Electroche. Soc., 2007, 154, E37—E44
[22]	Panizza M., Cerisola G., Electrochim. Acta, 2005, 51, 191—199
[23]	Li H., Zhu X., Jiang Y., Ni J., Chemosphere, 2010, 80, 845—851
[24]	Souzad F., Saez C., Canizares P., Motheo D. A., Rodrigo M., J. Chem. Tech. Biotech., 2014, 89, 282—289
[25]	Vazquez-Gomez L., Battisti D. A., Ferro S., Cerro M., Reyna S., Clean-Soil, Air Water, 2012, 40, 408—415