Cobalt doped ZrO2 decorated multiwalled carbon nanotube: A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes

William Wilson Anku; Samuel Osei Bonsu Oppong; Sudheesh Kumar Shukla; Eric Selorm Agorku; Poomani Penny Govender

doi:10.1016/j.pnsc.2016.06.007

Cobalt doped ZrO₂ decorated multiwalled carbon nanotube: A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes

William Wilson Anku, Samuel Osei Bonsu Oppong, Sudheesh Kumar Shukla, Eric Selorm Agorku, Poomani Penny Govender

Chemical Sciences

University of Johannesburg

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

60 Citations (Scopus)

Abstract

This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite (Co-ZrO₂-MWCNTs) under simulated visible light. The bare ZrO₂, ZrO₂-MWCNTs, Co-ZrO₂ and Co-ZrO₂-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction (XRD), Fourier Transformer Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Raman Spectroscopy, (UV–Vis)-Spectroscopy and Energy Dispersive Spectroscopy (EDS) for their structure, formation, morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO₂. The most efficient catalyst (0.5% Co-ZrO₂-MWCNTs) with the band gap and Ka values of 5.21 eV and 16.86×10⁻³ min⁻¹ respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min.

Original language	English
Pages (from-to)	354-361
Number of pages	8
Journal	Progress in Natural Science: Materials International
Volume	26
Issue number	4
DOIs	https://doi.org/10.1016/j.pnsc.2016.06.007
Publication status	Published - 1 Aug 2016

Keywords

Cobalt
Multiwalled carbon nanotube
Nanocomposite
Photodegradation
ZrO

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1016/j.pnsc.2016.06.007

Cite this

@article{aa20af160f214cccb5ebf5e58ff2b48a,

title = "Cobalt doped ZrO2 decorated multiwalled carbon nanotube: A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes",

abstract = "This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite (Co-ZrO2-MWCNTs) under simulated visible light. The bare ZrO2, ZrO2-MWCNTs, Co-ZrO2 and Co-ZrO2-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction (XRD), Fourier Transformer Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Raman Spectroscopy, (UV–Vis)-Spectroscopy and Energy Dispersive Spectroscopy (EDS) for their structure, formation, morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO2. The most efficient catalyst (0.5% Co-ZrO2-MWCNTs) with the band gap and Ka values of 5.21 eV and 16.86×10−3 min−1 respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min.",

keywords = "Cobalt, Multiwalled carbon nanotube, Nanocomposite, Photodegradation, ZrO",

author = "Anku, {William Wilson} and Oppong, {Samuel Osei Bonsu} and Shukla, {Sudheesh Kumar} and Agorku, {Eric Selorm} and Govender, {Poomani Penny}",

note = "Publisher Copyright: {\textcopyright} 2016 Chinese Materials Research Society",

year = "2016",

month = aug,

day = "1",

doi = "10.1016/j.pnsc.2016.06.007",

language = "English",

volume = "26",

pages = "354--361",

journal = "Progress in Natural Science: Materials International",

issn = "1002-0071",

publisher = "Elsevier B.V.",

number = "4",

}

Cobalt doped ZrO₂ decorated multiwalled carbon nanotube: A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes. / Anku, William Wilson; Oppong, Samuel Osei Bonsu; Shukla, Sudheesh Kumar et al.
In: Progress in Natural Science: Materials International, Vol. 26, No. 4, 01.08.2016, p. 354-361.

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

TY - JOUR

T1 - Cobalt doped ZrO2 decorated multiwalled carbon nanotube

T2 - A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes

AU - Anku, William Wilson

AU - Oppong, Samuel Osei Bonsu

AU - Shukla, Sudheesh Kumar

AU - Agorku, Eric Selorm

AU - Govender, Poomani Penny

PY - 2016/8/1

Y1 - 2016/8/1

N2 - This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite (Co-ZrO2-MWCNTs) under simulated visible light. The bare ZrO2, ZrO2-MWCNTs, Co-ZrO2 and Co-ZrO2-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction (XRD), Fourier Transformer Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Raman Spectroscopy, (UV–Vis)-Spectroscopy and Energy Dispersive Spectroscopy (EDS) for their structure, formation, morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO2. The most efficient catalyst (0.5% Co-ZrO2-MWCNTs) with the band gap and Ka values of 5.21 eV and 16.86×10−3 min−1 respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min.

AB - This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite (Co-ZrO2-MWCNTs) under simulated visible light. The bare ZrO2, ZrO2-MWCNTs, Co-ZrO2 and Co-ZrO2-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction (XRD), Fourier Transformer Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Raman Spectroscopy, (UV–Vis)-Spectroscopy and Energy Dispersive Spectroscopy (EDS) for their structure, formation, morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO2. The most efficient catalyst (0.5% Co-ZrO2-MWCNTs) with the band gap and Ka values of 5.21 eV and 16.86×10−3 min−1 respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min.

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KW - Photodegradation

KW - ZrO

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