Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
AC-modulated voltfluorometric study of the transient adsorption of Rose Bengal dianions in the transfer across the 1,2-dichloroethane vertical bar water interface
Autore:
Nishi, N; Izawa, K; Yamamoto, M; Kakiuchi, T;
Indirizzi:
Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 & Hydrocarbon Chem, Kyoto 6068501, Japan
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 34, volume: 105, anno: 2001,
pagine: 8162 - 8169
SICI:
1520-6106(20010830)105:34<8162:AVSOTT>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMMISCIBLE ELECTROLYTE-SOLUTIONS; WATER-NITROBENZENE INTERFACE; TETRAETHYLAMMONIUM ION TRANSFER; VOLTAGE-SCAN FLUOROMETRY; LIQUID-LIQUID INTERFACE; OCTYL ETHER INTERFACE; CHARGE-TRANSFER; WATER-VERTICAL-BAR-1,2-DICHLOROETHANE INTERFACE; FARADAIC IMPEDANCE; TRANSFER KINETICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
60
Recensione:
Indirizzi per estratti:
Indirizzo: Kakiuchi, T Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 on Chem, Kyoto 6068501, Japan
Citazione:
N. Nishi et al., "AC-modulated voltfluorometric study of the transient adsorption of Rose Bengal dianions in the transfer across the 1,2-dichloroethane vertical bar water interface", J PHYS CH B, 105(34), 2001, pp. 8162-8169

Abstract

The transfer of Rose Bengal dianion (RB2-), a fluorescent ion with asymmetric charge distribution, across the 1,2-dichloroethane (DCE)\ water (W) interface, has been studied using ac-modulated voltfluorometry, a method that combines ac voltammetry with fluorometry. The phase angle of the ac component of the fluorescence shifts to a value that cannot be explained by the theory based on the simple combination of the heterogeneous ion transfer and mass transfer. This anomaly strongly suggests that RB2- ions transiently adsorb at the interface in the course of the heterogeneous ion transfer. The rate-determining step seems to be the adsorption-desorption of RB2- ions between DCE and the interface. The apparent standard rate constant for ion transfer across the interface is estimated to be 1.4 x 10(-2) cm s(-1). The adsorption of RB2- appears to decelerate the rate of ion transfer across theinterface.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/10/20 alle ore 01:26:28