摘要
The transfer of Pb2+ facilitated by interfacial complexation with 5-(4-phenoxyphenyl)-6H-1,3,4-thiadiazin-2-amine(PPTA) at the polarized water/1,2-dicholoroethane(1,2-DCE) interface was investigated by cyclic voltammetry.We synthesized the thiadiazine derivative,PPTA,firstly.The transfer was performed at different metal concentrations and scan rates,and the obtained voltammetric transfer peaks toward Pb2+ ion over other divalent cations(Zn2+,Co2+,Ni2+,Cd2+,Hg2+,and Cu2+) were reversible.The dependence of the half-wave potentials of the Pb2+ ion on the concentration of PPTA in the organic phase indicates that the ion transfer is facilitated by the formation of 1:2(metal:ligand) complex in the organic phase with the association constant(lgβ2) of(17.1±0.2).
The transfer of Pb2+ facilitated by interracial complexation with 5-(4-phenoxyphenyl)-6H-1,3, 4-thiadiazin-2-amine (PPTA) at the polarized water/1,2-dicholoroethane (1,2-DCE) interface was investigated by cyclic voltammetry. We synthesized the thiadiazine derivative, PPTA, firstly. The transfer was performed at different metal concentrations and scan rates, and the obtained voltammetric transfer peaks toward Pb2+ ion over other divalent cations (Zn2+, Co2+, Ni2+, Cd2+, Hg2+, and Cu2+) were reversible. The dependence of the half-wave potentials of the Pb2+ ion on the concentration of PPTA in the organic phase indicates that the ion transfer is facilitated by the formation of 1:2 (metal:ligand) complex in the organic phase with the association constant (Ig/32) of (17.1±0.2).
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2011年第8期1859-1862,共4页
Acta Physico-Chimica Sinica
基金
supported by the Scientific Research Fund of Selcuk University, Turkey (BAP-07201027)
关键词
《物理化学学报》
期刊
摘要
编辑部
Pb2+
Thiadiazine
Cyclicvoltammetry
Ion transfer
ITIES