Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions

Emilio Navarrete; Víctor Rojas; Mario Romero; J. Román; G. Cáceres; Rodrigo Henríquez; Paula Grez; Ricardo Schrebler; Francisco Herrera; Eduardo C. Muñoz

doi:10.1007/s10008-019-04476-2

Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions

Emilio Navarrete, Víctor Rojas, Mario Romero, J. Román, G. Cáceres, Rodrigo Henríquez, Paula Grez, Ricardo Schrebler, Francisco Herrera, Eduardo C. Muñoz

INSTITUTE OF CHEMISTRY

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Cadmium telluride quantum dots (CdTe-QDs) can be deposited from colloidal solutions on glassy carbon (GC) electrodes potentiostatically. The immobilization of QDs can be performed at potentials positive and negative from the potential of zero charge (PZC = 0.45 V vs. Ag/AgCl), including the open circuit potential. The surface coverage of QDs depends on the deposition potential and time. The amount of QD layers was determined by following the redox process of cadmium by cyclic voltammetry and chronoamperometry. Additionally, the QD layers were characterized by scanning electrochemical microscopy (SECM) indicating a decrease of the surface conductivity of GC electrodes.

Original language	English
Pages (from-to)	133-140
Number of pages	8
Journal	Journal of Solid State Electrochemistry
Volume	25
Issue number	1
DOIs	https://doi.org/10.1007/s10008-019-04476-2
State	Published - Jan 2021

Keywords

Cadmium telluride
Electrostatic deposition
Glassy carbon
Quantum dots
Scanning electrochemical microscopy

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10.1007/s10008-019-04476-2

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title = "Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions",

abstract = "Cadmium telluride quantum dots (CdTe-QDs) can be deposited from colloidal solutions on glassy carbon (GC) electrodes potentiostatically. The immobilization of QDs can be performed at potentials positive and negative from the potential of zero charge (PZC = 0.45 V vs. Ag/AgCl), including the open circuit potential. The surface coverage of QDs depends on the deposition potential and time. The amount of QD layers was determined by following the redox process of cadmium by cyclic voltammetry and chronoamperometry. Additionally, the QD layers were characterized by scanning electrochemical microscopy (SECM) indicating a decrease of the surface conductivity of GC electrodes.",

keywords = "Cadmium telluride, Electrostatic deposition, Glassy carbon, Quantum dots, Scanning electrochemical microscopy",

author = "Emilio Navarrete and V{\'i}ctor Rojas and Mario Romero and J. Rom{\'a}n and G. C{\'a}ceres and Rodrigo Henr{\'i}quez and Paula Grez and Ricardo Schrebler and Francisco Herrera and Mu{\~n}oz, {Eduardo C.}",

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doi = "10.1007/s10008-019-04476-2",

language = "English",

volume = "25",

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T1 - Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions

AU - Navarrete, Emilio

AU - Rojas, Víctor

AU - Romero, Mario

AU - Román, J.

AU - Cáceres, G.

AU - Henríquez, Rodrigo

AU - Grez, Paula

AU - Schrebler, Ricardo

AU - Herrera, Francisco

AU - Muñoz, Eduardo C.

PY - 2021/1

Y1 - 2021/1

N2 - Cadmium telluride quantum dots (CdTe-QDs) can be deposited from colloidal solutions on glassy carbon (GC) electrodes potentiostatically. The immobilization of QDs can be performed at potentials positive and negative from the potential of zero charge (PZC = 0.45 V vs. Ag/AgCl), including the open circuit potential. The surface coverage of QDs depends on the deposition potential and time. The amount of QD layers was determined by following the redox process of cadmium by cyclic voltammetry and chronoamperometry. Additionally, the QD layers were characterized by scanning electrochemical microscopy (SECM) indicating a decrease of the surface conductivity of GC electrodes.

AB - Cadmium telluride quantum dots (CdTe-QDs) can be deposited from colloidal solutions on glassy carbon (GC) electrodes potentiostatically. The immobilization of QDs can be performed at potentials positive and negative from the potential of zero charge (PZC = 0.45 V vs. Ag/AgCl), including the open circuit potential. The surface coverage of QDs depends on the deposition potential and time. The amount of QD layers was determined by following the redox process of cadmium by cyclic voltammetry and chronoamperometry. Additionally, the QD layers were characterized by scanning electrochemical microscopy (SECM) indicating a decrease of the surface conductivity of GC electrodes.

KW - Cadmium telluride

KW - Electrostatic deposition

KW - Glassy carbon

KW - Quantum dots

KW - Scanning electrochemical microscopy

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JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

IS - 1

ER -

Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions

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Keywords

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