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

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...

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Main Authors: Hassan, N. S., Abdul Jalil, Aishah, Triwahyono, Sugeng, Hitam, C. N. C., Abdul Rahman, Anis Farhana, Khusnun, N. F., Mamat, Che Rozid, Mohd. Asmadi, Mohd. Asmadi, Mohamed, Mohamad Azuwa, Ali, Mohamad Wijayanuddin, Prasetyoko, Didik
Format: Article
Published: Taiwan Institute of Chemical Engineers 2018
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/86326/
http://dx.doi.org/10.1016/j.jtice.2017.10.038
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spelling my.utm.863262020-08-31T14:02:26Z http://eprints.utm.my/id/eprint/86326/ Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A Hassan, N. S. Abdul Jalil, Aishah Triwahyono, Sugeng Hitam, C. N. C. Abdul Rahman, Anis Farhana Khusnun, N. F. Mamat, Che Rozid Mohd. Asmadi, Mohd. Asmadi Mohamed, Mohamad Azuwa Ali, Mohamad Wijayanuddin Prasetyoko, Didik TP Chemical technology 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. Taiwan Institute of Chemical Engineers 2018-01 Article PeerReviewed Hassan, N. S. and Abdul Jalil, Aishah and Triwahyono, Sugeng and Hitam, C. N. C. and Abdul Rahman, Anis Farhana and Khusnun, N. F. and Mamat, Che Rozid and Mohd. Asmadi, Mohd. Asmadi and Mohamed, Mohamad Azuwa and Ali, Mohamad Wijayanuddin and Prasetyoko, Didik (2018) Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A. Journal of The Taiwan Institute of Chemical Engineers, 82 . pp. 322-330. ISSN 1876-1070 http://dx.doi.org/10.1016/j.jtice.2017.10.038
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Hassan, N. S.
Abdul Jalil, Aishah
Triwahyono, Sugeng
Hitam, C. N. C.
Abdul Rahman, Anis Farhana
Khusnun, N. F.
Mamat, Che Rozid
Mohd. Asmadi, Mohd. Asmadi
Mohamed, Mohamad Azuwa
Ali, Mohamad Wijayanuddin
Prasetyoko, Didik
Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
description 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.
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author Hassan, N. S.
Abdul Jalil, Aishah
Triwahyono, Sugeng
Hitam, C. N. C.
Abdul Rahman, Anis Farhana
Khusnun, N. F.
Mamat, Che Rozid
Mohd. Asmadi, Mohd. Asmadi
Mohamed, Mohamad Azuwa
Ali, Mohamad Wijayanuddin
Prasetyoko, Didik
author_facet Hassan, N. S.
Abdul Jalil, Aishah
Triwahyono, Sugeng
Hitam, C. N. C.
Abdul Rahman, Anis Farhana
Khusnun, N. F.
Mamat, Che Rozid
Mohd. Asmadi, Mohd. Asmadi
Mohamed, Mohamad Azuwa
Ali, Mohamad Wijayanuddin
Prasetyoko, Didik
author_sort Hassan, N. S.
title Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
title_short Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
title_full Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
title_fullStr Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
title_full_unstemmed Exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol A
title_sort exploiting copper-silica-zirconia cooperative interactions for the stabilization of tetragonal zirconia catalysts and enhancement of the visible-light photodegradation of bisphenol a
publisher Taiwan Institute of Chemical Engineers
publishDate 2018
url http://eprints.utm.my/id/eprint/86326/
http://dx.doi.org/10.1016/j.jtice.2017.10.038
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score 13.211869

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