摘要
The influence of ionic surfactants,cetyltrimethylammonium bromide（CTAB）,self-assembled within silica-nanochannels of a hybrid mesoporous silica membrane（HMSM） on simple ion transfer（IT）behaviors at the meso-water/1,2-dichloroethane（W/DCE） interface arrays supported by such a HMSM was investigated by voltammetry for the first time.Significantly,it is found that the CTAB in HMSM can dramatically enhance the peak-current responses corresponding to ITs of some anions and even lower their Gibbs transfer energies from W to DCE,which could be ascribed to an anion-exchange process between anions and the bromide of CTAB associated with partial ion-dehydration induced by the CTAB.This work will provide a new strategy to study anion transfer processes and improve the electroanalytical performance for anion detection at the liquid/liquid interface.
The influence of ionic surfactants,cetyltrimethylammonium bromide（CTAB）,self-assembled within silica-nanochannels of a hybrid mesoporous silica membrane（HMSM） on simple ion transfer（IT）behaviors at the meso-water/1,2-dichloroethane（W/DCE） interface arrays supported by such a HMSM was investigated by voltammetry for the first time.Significantly,it is found that the CTAB in HMSM can dramatically enhance the peak-current responses corresponding to ITs of some anions and even lower their Gibbs transfer energies from W to DCE,which could be ascribed to an anion-exchange process between anions and the bromide of CTAB associated with partial ion-dehydration induced by the CTAB.This work will provide a new strategy to study anion transfer processes and improve the electroanalytical performance for anion detection at the liquid/liquid interface.
基金
supported by the National Science Foundation of China (No.21005049)
the Natural Science Foundation of Shanghai,China (No.14ZR1440900)
