Facile methodology to generate Cu2O/TiO2 heterojunction on FTO electrode for photoelectroreduction of nitrate

Felipe Matamala-Troncoso; Cuong Ky Nguyen; Douglas R. MacFarlane; Mauricio Isaacs; César Sáez-Navarrete

doi:10.1016/j.matlet.2021.129663

Facile methodology to generate Cu₂O/TiO₂ heterojunction on FTO electrode for photoelectroreduction of nitrate

Felipe Matamala-Troncoso, Cuong Ky Nguyen, Douglas R. MacFarlane, Mauricio Isaacs, César Sáez-Navarrete

School of Chemistry

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

10 Citations (Scopus)

Abstract

Easy and low-cost synthesis of a Cu₂O/TiO₂/FTO electrode is proposed. The Cu₂O/TiO₂ heterojunction was synthesized by sintering TiO₂ nanoparticles on an FTO electrode surface, followed by a Cu₂O electrochemical deposition step. Characterization of the electrode was performed by FE-SEM-EDX microscopy, Raman and UV–Vis DR spectroscopy, and electrochemical methods. The photoelectrochemical behavior was characterized, and the p-type character material was confirmed. The reduction of nitrate to nitrite was performed using the Cu₂O/TiO₂/FTO electrode under Xe lamp illumination with lower overpotentials than those commonly used in this electrochemical process. Nitrate/nitrite conversion was achieved with a promising result of about 22% conversion at −0.05 V RHE.

Original language	English
Article number	129663
Number of pages	4
Journal	Materials Letters
Volume	293
DOIs	https://doi.org/10.1016/j.matlet.2021.129663
Publication status	Published - 15 Jun 2021

Keywords

CuO/TiO heterojunction
Nitrate reduction
Photoelectrocatalysis
Semiconductors
Solar energy materials

Access to Document

10.1016/j.matlet.2021.129663

Cite this

@article{aa59f4ac61ac44d5b77f4d19510fdd29,

title = "Facile methodology to generate Cu2O/TiO2 heterojunction on FTO electrode for photoelectroreduction of nitrate",

abstract = "Easy and low-cost synthesis of a Cu2O/TiO2/FTO electrode is proposed. The Cu2O/TiO2 heterojunction was synthesized by sintering TiO2 nanoparticles on an FTO electrode surface, followed by a Cu2O electrochemical deposition step. Characterization of the electrode was performed by FE-SEM-EDX microscopy, Raman and UV–Vis DR spectroscopy, and electrochemical methods. The photoelectrochemical behavior was characterized, and the p-type character material was confirmed. The reduction of nitrate to nitrite was performed using the Cu2O/TiO2/FTO electrode under Xe lamp illumination with lower overpotentials than those commonly used in this electrochemical process. Nitrate/nitrite conversion was achieved with a promising result of about 22\% conversion at −0.05 V RHE.",

keywords = "CuO/TiO heterojunction, Nitrate reduction, Photoelectrocatalysis, Semiconductors, Solar energy materials",

author = "Felipe Matamala-Troncoso and \{Ky Nguyen\}, Cuong and MacFarlane, \{Douglas R.\} and Mauricio Isaacs and C{\'e}sar S{\'a}ez-Navarrete",

note = "Funding Information: This work was supported by ANID 21171065 and FONDECYT 1181226 grants. FONDEQUIP EQM150101 and EQM150020 Program. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jun,

day = "15",

doi = "10.1016/j.matlet.2021.129663",

language = "English",

volume = "293",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Facile methodology to generate Cu2O/TiO2 heterojunction on FTO electrode for photoelectroreduction of nitrate

AU - Matamala-Troncoso, Felipe

AU - Ky Nguyen, Cuong

AU - MacFarlane, Douglas R.

AU - Isaacs, Mauricio

AU - Sáez-Navarrete, César

N1 - Funding Information: This work was supported by ANID 21171065 and FONDECYT 1181226 grants. FONDEQUIP EQM150101 and EQM150020 Program. Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6/15

Y1 - 2021/6/15

N2 - Easy and low-cost synthesis of a Cu2O/TiO2/FTO electrode is proposed. The Cu2O/TiO2 heterojunction was synthesized by sintering TiO2 nanoparticles on an FTO electrode surface, followed by a Cu2O electrochemical deposition step. Characterization of the electrode was performed by FE-SEM-EDX microscopy, Raman and UV–Vis DR spectroscopy, and electrochemical methods. The photoelectrochemical behavior was characterized, and the p-type character material was confirmed. The reduction of nitrate to nitrite was performed using the Cu2O/TiO2/FTO electrode under Xe lamp illumination with lower overpotentials than those commonly used in this electrochemical process. Nitrate/nitrite conversion was achieved with a promising result of about 22% conversion at −0.05 V RHE.

AB - Easy and low-cost synthesis of a Cu2O/TiO2/FTO electrode is proposed. The Cu2O/TiO2 heterojunction was synthesized by sintering TiO2 nanoparticles on an FTO electrode surface, followed by a Cu2O electrochemical deposition step. Characterization of the electrode was performed by FE-SEM-EDX microscopy, Raman and UV–Vis DR spectroscopy, and electrochemical methods. The photoelectrochemical behavior was characterized, and the p-type character material was confirmed. The reduction of nitrate to nitrite was performed using the Cu2O/TiO2/FTO electrode under Xe lamp illumination with lower overpotentials than those commonly used in this electrochemical process. Nitrate/nitrite conversion was achieved with a promising result of about 22% conversion at −0.05 V RHE.

KW - CuO/TiO heterojunction

KW - Nitrate reduction

KW - Photoelectrocatalysis

KW - Semiconductors

KW - Solar energy materials

UR - https://www.scopus.com/pages/publications/85102894949

U2 - 10.1016/j.matlet.2021.129663

DO - 10.1016/j.matlet.2021.129663

M3 - Article

AN - SCOPUS:85102894949

SN - 0167-577X

VL - 293

JO - Materials Letters

JF - Materials Letters

M1 - 129663

ER -

Facile methodology to generate Cu₂O/TiO₂ heterojunction on FTO electrode for photoelectroreduction of nitrate

Abstract

Keywords

Access to Document

Other files and links

ARC Centre of Excellence for Electromaterials Science

Cite this

Facile methodology to generate Cu2O/TiO2 heterojunction on FTO electrode for photoelectroreduction of nitrate

Abstract

Keywords

Access to Document

Other files and links

Projects

ARC Centre of Excellence for Electromaterials Science

Cite this

Facile methodology to generate Cu₂O/TiO₂ heterojunction on FTO electrode for photoelectroreduction of nitrate