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 CARLO MUÑOZ CARTAGENA

Research output: Contribution to journalArticlepeer-review

1 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 languageEnglish
Pages (from-to)133-140
Number of pages8
JournalJournal of Solid State Electrochemistry
Volume25
Issue number1
DOIs
StatePublished - Jan 2021
Externally publishedYes

Keywords

  • Cadmium telluride
  • Electrostatic deposition
  • Glassy carbon
  • Quantum dots
  • Scanning electrochemical microscopy

Fingerprint Dive into the research topics of 'Irreversible electrostatic deposition of CdTe quantum dots on glassy carbon electrodes from colloidal solutions'. Together they form a unique fingerprint.

Cite this