Oxidation of the pesticide atrazine at DSA electrodes.

摘要: This paper presents the study of electrochemical oxidation pesticide atrazine at a Ti/Ru(0.3)Ti(0.7)O(2) dimensionally stable anodes (DSA). The effect using different supporting electrolytes (NaCl, NaOH, NaNO(3), NaClO(4), H(2)SO(4) and Na(2)SO(4)) during galvanostatic electrolysis was investigated. It observed that removal total organic carbon (TOC) only achieved appreciable rates when NaCl used as electrolyte, due to oxidising species formed in this electrolyte (e.g. ClO(-)). Variation concentration demonstrated that, although low concentrations are necessary result complete solution, TOC is almost linearly dependent on quantity solution. Examination applied current density indicates efficiency reaches maximum 60 mA cm(-2). Testing alternative electrode materials containing SnO(2) did not improve Na(2)SO(4), but small increase observed. Overall there appears be no great advantage SnO(2)-containing electrodes over electrode.