Exploiting copper–silica–zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A

N. S. Hassan, A. A. Jalil, S. Triwahyono, C. N.C. Hitam, A. F.A. Rahman, N. F. Khusnun, C. R. Mamat, M. Asmadi, M. Mohamed, M. W. Ali, D. Prasetyoko

Research output: Research - peer-reviewArticle

Abstract

Silica-doped tetragonal mesoporous zirconia nanoparticles, SiO2/ZrO2 (SZ), were successfully prepared by a simple microwave-assisted method, and the subsequent incorporation of copper (1–10 wt%) via an electrochemical method gave CuO/SiO2/ZrO2 (CSZ) catalysts. The SiO2 stabilized the ZrO2 completely in the tetragonal phase, but that the added copper occupied oxygen vacancies in the SZ lattice to perturb the catalysts and partially reintroduce the monoclinic phase. However, CuO enhanced the photoactivity of CSZ catalysts by lowering the band gap energy (from 4.35 eV to 2.70 eV) and acting as an electron trapper to suppress the recombination of electron–hole pairs. The activity of the catalysts in the photodegradation of bisphenol A was ranked in the following order: 5 CSZ (82%) > 1 CSZ (65%) > 10 CSZ (60%) > SZ (58%). The silica–copper–zirconia cooperative interactions affected the numbers of oxygen vacancies, defect sites, Zr–O–Si and Zr–O–Cu bonds, which consequently influenced the stabilization of ZrO2 as well as the photoactivity of each catalyst. A kinetic study demonstrated that the photodegradation followed the pseudo-first-order Langmuir–Hinshelwood model.

LanguageEnglish
Pages322-330
Number of pages9
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume82
DOIs
StatePublished - 1 Jan 2018

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Photodegradation
Silicon Dioxide
Copper
Stabilization
Catalysts
zirconium oxide
bisphenol A
Zirconia
Silica
Oxygen vacancies
Electrons
Energy gap
Microwaves
Nanoparticles
Defects
Kinetics

Keywords

  • Bisphenol A
  • Copper-silica-zirconia interactions
  • Stabilization
  • Tetragonal zirconia
  • Visible-light photodegradation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

@article{c32c32f5789a4e52a602ebe327ac1279,
title = "Exploiting copper–silica–zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A",
abstract = "Silica-doped tetragonal mesoporous zirconia nanoparticles, SiO2/ZrO2 (SZ), were successfully prepared by a simple microwave-assisted method, and the subsequent incorporation of copper (1–10 wt%) via an electrochemical method gave CuO/SiO2/ZrO2 (CSZ) catalysts. The SiO2 stabilized the ZrO2 completely in the tetragonal phase, but that the added copper occupied oxygen vacancies in the SZ lattice to perturb the catalysts and partially reintroduce the monoclinic phase. However, CuO enhanced the photoactivity of CSZ catalysts by lowering the band gap energy (from 4.35 eV to 2.70 eV) and acting as an electron trapper to suppress the recombination of electron–hole pairs. The activity of the catalysts in the photodegradation of bisphenol A was ranked in the following order: 5 CSZ (82%) > 1 CSZ (65%) > 10 CSZ (60%) > SZ (58%). The silica–copper–zirconia cooperative interactions affected the numbers of oxygen vacancies, defect sites, Zr–O–Si and Zr–O–Cu bonds, which consequently influenced the stabilization of ZrO2 as well as the photoactivity of each catalyst. A kinetic study demonstrated that the photodegradation followed the pseudo-first-order Langmuir–Hinshelwood model.",
keywords = "Bisphenol A, Copper-silica-zirconia interactions, Stabilization, Tetragonal zirconia, Visible-light photodegradation",
author = "Hassan, {N. S.} and Jalil, {A. A.} and S. Triwahyono and Hitam, {C. N.C.} and Rahman, {A. F.A.} and Khusnun, {N. F.} and Mamat, {C. R.} and M. Asmadi and M. Mohamed and Ali, {M. W.} and D. Prasetyoko",
year = "2018",
month = "1",
doi = "10.1016/j.jtice.2017.10.038",
volume = "82",
pages = "322--330",
journal = "Journal of the Taiwan Institute of Chemical Engineers",
issn = "1876-1070",
publisher = "Taiwan Institute of Chemical Engineers",

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TY - JOUR

T1 - Exploiting copper–silica–zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A

AU - Hassan,N. S.

AU - Jalil,A. A.

AU - Triwahyono,S.

AU - Hitam,C. N.C.

AU - Rahman,A. F.A.

AU - Khusnun,N. F.

AU - Mamat,C. R.

AU - Asmadi,M.

AU - Mohamed,M.

AU - Ali,M. W.

AU - Prasetyoko,D.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Silica-doped tetragonal mesoporous zirconia nanoparticles, SiO2/ZrO2 (SZ), were successfully prepared by a simple microwave-assisted method, and the subsequent incorporation of copper (1–10 wt%) via an electrochemical method gave CuO/SiO2/ZrO2 (CSZ) catalysts. The SiO2 stabilized the ZrO2 completely in the tetragonal phase, but that the added copper occupied oxygen vacancies in the SZ lattice to perturb the catalysts and partially reintroduce the monoclinic phase. However, CuO enhanced the photoactivity of CSZ catalysts by lowering the band gap energy (from 4.35 eV to 2.70 eV) and acting as an electron trapper to suppress the recombination of electron–hole pairs. The activity of the catalysts in the photodegradation of bisphenol A was ranked in the following order: 5 CSZ (82%) > 1 CSZ (65%) > 10 CSZ (60%) > SZ (58%). The silica–copper–zirconia cooperative interactions affected the numbers of oxygen vacancies, defect sites, Zr–O–Si and Zr–O–Cu bonds, which consequently influenced the stabilization of ZrO2 as well as the photoactivity of each catalyst. A kinetic study demonstrated that the photodegradation followed the pseudo-first-order Langmuir–Hinshelwood model.

AB - Silica-doped tetragonal mesoporous zirconia nanoparticles, SiO2/ZrO2 (SZ), were successfully prepared by a simple microwave-assisted method, and the subsequent incorporation of copper (1–10 wt%) via an electrochemical method gave CuO/SiO2/ZrO2 (CSZ) catalysts. The SiO2 stabilized the ZrO2 completely in the tetragonal phase, but that the added copper occupied oxygen vacancies in the SZ lattice to perturb the catalysts and partially reintroduce the monoclinic phase. However, CuO enhanced the photoactivity of CSZ catalysts by lowering the band gap energy (from 4.35 eV to 2.70 eV) and acting as an electron trapper to suppress the recombination of electron–hole pairs. The activity of the catalysts in the photodegradation of bisphenol A was ranked in the following order: 5 CSZ (82%) > 1 CSZ (65%) > 10 CSZ (60%) > SZ (58%). The silica–copper–zirconia cooperative interactions affected the numbers of oxygen vacancies, defect sites, Zr–O–Si and Zr–O–Cu bonds, which consequently influenced the stabilization of ZrO2 as well as the photoactivity of each catalyst. A kinetic study demonstrated that the photodegradation followed the pseudo-first-order Langmuir–Hinshelwood model.

KW - Bisphenol A

KW - Copper-silica-zirconia interactions

KW - Stabilization

KW - Tetragonal zirconia

KW - Visible-light photodegradation

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VL - 82

SP - 322

EP - 330

JO - Journal of the Taiwan Institute of Chemical Engineers

T2 - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

SN - 1876-1070

ER -