Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes

Sekar Karthikeyan, Santosh Kumar, Lee J. Durndell, Mark A. Isaacs, Christopher M.A. Parlett, Ben Coulson, Richard E. Douthwaite, Zhi Jiang, Karen Wilson, Adam F. Lee

Research output: Contribution to journalArticle

14 Citations (Scopus)
12 Downloads (Pure)

Abstract

Well-defined Cu2O nanocubes with tunable dimensions and physicochemical properties have been prepared using a simple one-pot reaction. Reduction of Cu(II) salts by ascorbic acid in the presence of PEG as a structure-directing agent affords crystalline Cu2O nanocubes of between 50 to 500nm. Optical band gap, band energies, charge-carrier lifetimes and surface oxidation state systematically evolve with nanocube size, and correlate well with visible light photocatalytic activity for aqueous phase phenol degradation and H2 production which are both directly proportional to size (doubling between 50 and 500nm). HPLC reveals fumaric acid as the primary organic product of phenol degradation, and selectivity increases with nanocube size at the expense of toxic catechol. Apparent quantum efficiencies reach 26% for phenol photodegradation and 1.2% for H2 production using 500nm Cu2O cubes.

Original languageEnglish
Pages (from-to)3554-3563
Number of pages10
JournalChemCatChem
Volume10
Issue number16
Early online date15 Jun 2018
DOIs
Publication statusPublished - 21 Aug 2018

Fingerprint

Phenol
phenols
Phenols
degradation
Degradation
Carrier lifetime
ascorbic acid
Poisons
Ascorbic acid
Optical band gaps
Photodegradation
carrier lifetime
Charge carriers
Quantum efficiency
Band structure
Polyethylene glycols
Ascorbic Acid
energy bands
quantum efficiency
charge carriers

Keywords

  • CuO
  • Hydrogen
  • Nanocubes
  • Phenol
  • Photocatalysis

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Karthikeyan, S., Kumar, S., Durndell, L. J., Isaacs, M. A., Parlett, C. M. A., Coulson, B., ... Lee, A. F. (2018). Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes. ChemCatChem, 10(16), 3554-3563. https://doi.org/10.1002/cctc.201800439

Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes. / Karthikeyan, Sekar; Kumar, Santosh; Durndell, Lee J.; Isaacs, Mark A.; Parlett, Christopher M.A.; Coulson, Ben; Douthwaite, Richard E.; Jiang, Zhi; Wilson, Karen; Lee, Adam F.

In: ChemCatChem, Vol. 10, No. 16, 21.08.2018, p. 3554-3563.

Research output: Contribution to journalArticle

Karthikeyan, S, Kumar, S, Durndell, LJ, Isaacs, MA, Parlett, CMA, Coulson, B, Douthwaite, RE, Jiang, Z, Wilson, K & Lee, AF 2018, 'Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes', ChemCatChem, vol. 10, no. 16, pp. 3554-3563. https://doi.org/10.1002/cctc.201800439
Karthikeyan S, Kumar S, Durndell LJ, Isaacs MA, Parlett CMA, Coulson B et al. Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes. ChemCatChem. 2018 Aug 21;10(16):3554-3563. https://doi.org/10.1002/cctc.201800439
Karthikeyan, Sekar ; Kumar, Santosh ; Durndell, Lee J. ; Isaacs, Mark A. ; Parlett, Christopher M.A. ; Coulson, Ben ; Douthwaite, Richard E. ; Jiang, Zhi ; Wilson, Karen ; Lee, Adam F. / Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes. In: ChemCatChem. 2018 ; Vol. 10, No. 16. pp. 3554-3563.
@article{88ad0e6fcb724b56a204fbc5afa30ef3,
title = "Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes",
abstract = "Well-defined Cu2O nanocubes with tunable dimensions and physicochemical properties have been prepared using a simple one-pot reaction. Reduction of Cu(II) salts by ascorbic acid in the presence of PEG as a structure-directing agent affords crystalline Cu2O nanocubes of between 50 to 500nm. Optical band gap, band energies, charge-carrier lifetimes and surface oxidation state systematically evolve with nanocube size, and correlate well with visible light photocatalytic activity for aqueous phase phenol degradation and H2 production which are both directly proportional to size (doubling between 50 and 500nm). HPLC reveals fumaric acid as the primary organic product of phenol degradation, and selectivity increases with nanocube size at the expense of toxic catechol. Apparent quantum efficiencies reach 26{\%} for phenol photodegradation and 1.2{\%} for H2 production using 500nm Cu2O cubes.",
keywords = "CuO, Hydrogen, Nanocubes, Phenol, Photocatalysis",
author = "Sekar Karthikeyan and Santosh Kumar and Durndell, {Lee J.} and Isaacs, {Mark A.} and Parlett, {Christopher M.A.} and Ben Coulson and Douthwaite, {Richard E.} and Zhi Jiang and Karen Wilson and Lee, {Adam F.}",
year = "2018",
month = "8",
day = "21",
doi = "10.1002/cctc.201800439",
language = "English",
volume = "10",
pages = "3554--3563",
journal = "ChemCatChem",
issn = "1867-3880",
publisher = "Wiley-VCH Verlag",
number = "16",

}

TY - JOUR

T1 - Size-Dependent Visible Light Photocatalytic Performance of Cu2O Nanocubes

AU - Karthikeyan, Sekar

AU - Kumar, Santosh

AU - Durndell, Lee J.

AU - Isaacs, Mark A.

AU - Parlett, Christopher M.A.

AU - Coulson, Ben

AU - Douthwaite, Richard E.

AU - Jiang, Zhi

AU - Wilson, Karen

AU - Lee, Adam F.

PY - 2018/8/21

Y1 - 2018/8/21

N2 - Well-defined Cu2O nanocubes with tunable dimensions and physicochemical properties have been prepared using a simple one-pot reaction. Reduction of Cu(II) salts by ascorbic acid in the presence of PEG as a structure-directing agent affords crystalline Cu2O nanocubes of between 50 to 500nm. Optical band gap, band energies, charge-carrier lifetimes and surface oxidation state systematically evolve with nanocube size, and correlate well with visible light photocatalytic activity for aqueous phase phenol degradation and H2 production which are both directly proportional to size (doubling between 50 and 500nm). HPLC reveals fumaric acid as the primary organic product of phenol degradation, and selectivity increases with nanocube size at the expense of toxic catechol. Apparent quantum efficiencies reach 26% for phenol photodegradation and 1.2% for H2 production using 500nm Cu2O cubes.

AB - Well-defined Cu2O nanocubes with tunable dimensions and physicochemical properties have been prepared using a simple one-pot reaction. Reduction of Cu(II) salts by ascorbic acid in the presence of PEG as a structure-directing agent affords crystalline Cu2O nanocubes of between 50 to 500nm. Optical band gap, band energies, charge-carrier lifetimes and surface oxidation state systematically evolve with nanocube size, and correlate well with visible light photocatalytic activity for aqueous phase phenol degradation and H2 production which are both directly proportional to size (doubling between 50 and 500nm). HPLC reveals fumaric acid as the primary organic product of phenol degradation, and selectivity increases with nanocube size at the expense of toxic catechol. Apparent quantum efficiencies reach 26% for phenol photodegradation and 1.2% for H2 production using 500nm Cu2O cubes.

KW - CuO

KW - Hydrogen

KW - Nanocubes

KW - Phenol

KW - Photocatalysis

UR - http://www.scopus.com/inward/record.url?scp=85050765312&partnerID=8YFLogxK

U2 - 10.1002/cctc.201800439

DO - 10.1002/cctc.201800439

M3 - Article

AN - SCOPUS:85050765312

VL - 10

SP - 3554

EP - 3563

JO - ChemCatChem

JF - ChemCatChem

SN - 1867-3880

IS - 16

ER -