Visible light-responsive TiO2 coated MWCNTs as a hybrid nanocatalysts

F. Alosfur, Mohammad Hafizuddin Jumali, Shahidan Radiman, Noor J. Ridha, Mohd. Ambar Yarmo, Ali Umar Akrajas

Research output: Contribution to journalComment/debate

13 Citations (Scopus)

Abstract

Rapid synthesis of visible light responsive TiO2/MWCNTs nanocatalyst with high surface area is demonstrated in this work. The modified microwave method was successfully used to prepare TiO2 and TiO2/MWCNTs nanocatalyst. The X-ray diffraction (XRD), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) were used to characterize the nanocatalysts. The photocatalytic activity of TiO2 nanoparticles and the hybrid nanocatalysts was evaluated by degradation of methylene blue dye under UV and visible light irradiation. The XRD confirmed the formation of TiO2 with anatase structure while TEM micrographs displayed the TiO2 was well attached on multi walled carbon nanotubes (MWCNTs) surface. The surface area of TiO2 nanocatalyst was dramatically increased after the attachment of MWCNTs as supported by BET analysis. Consequently, the TiO2/MWCNTs nanocatalyst exhibited higher photocatalytic activity than that of bare TiO2 nanoparticles. More significantly, the photocatalytics activity of the hybrid nanocatalyst under visible light irradiation was greater than under UV.

Original languageEnglish
Pages (from-to)2977-2982
Number of pages6
JournalInternational Journal of Electrochemical Science
Volume8
Issue number2
Publication statusPublished - 1 Feb 2013

Fingerprint

Carbon Nanotubes
Carbon nanotubes
Irradiation
Nanoparticles
Transmission electron microscopy
X ray diffraction
Methylene Blue
Titanium dioxide
Coloring Agents
Dyes
Microwaves
Degradation

Keywords

  • Hybrid nanocomposite
  • Microwave
  • Photocatalytic
  • TiO nanoparticles

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Visible light-responsive TiO2 coated MWCNTs as a hybrid nanocatalysts. / Alosfur, F.; Jumali, Mohammad Hafizuddin; Radiman, Shahidan; Ridha, Noor J.; Yarmo, Mohd. Ambar; Akrajas, Ali Umar.

In: International Journal of Electrochemical Science, Vol. 8, No. 2, 01.02.2013, p. 2977-2982.

Research output: Contribution to journalComment/debate

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AU - Alosfur, F.

AU - Jumali, Mohammad Hafizuddin

AU - Radiman, Shahidan

AU - Ridha, Noor J.

AU - Yarmo, Mohd. Ambar

AU - Akrajas, Ali Umar

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AB - Rapid synthesis of visible light responsive TiO2/MWCNTs nanocatalyst with high surface area is demonstrated in this work. The modified microwave method was successfully used to prepare TiO2 and TiO2/MWCNTs nanocatalyst. The X-ray diffraction (XRD), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) were used to characterize the nanocatalysts. The photocatalytic activity of TiO2 nanoparticles and the hybrid nanocatalysts was evaluated by degradation of methylene blue dye under UV and visible light irradiation. The XRD confirmed the formation of TiO2 with anatase structure while TEM micrographs displayed the TiO2 was well attached on multi walled carbon nanotubes (MWCNTs) surface. The surface area of TiO2 nanocatalyst was dramatically increased after the attachment of MWCNTs as supported by BET analysis. Consequently, the TiO2/MWCNTs nanocatalyst exhibited higher photocatalytic activity than that of bare TiO2 nanoparticles. More significantly, the photocatalytics activity of the hybrid nanocatalyst under visible light irradiation was greater than under UV.

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