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Photocatalytic Performance of MWCNTs/TiO2 Nanocomposites: Conventional vs. Microwave-Assisted Synthesis

Ammara Riaz, Chunmei Zhou, Jijian Xu, Zhanglian Hong*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Multi-walled carbon nanotubes-titanium dioxide (MWCNTs-TiO2) nanocomposites were synthesized via microwave-assisted synthesis and conventional hydrothermal method, comprising of well-crystallized anatase TiO2 nanoparticles with different MWCNTs contents. TiO2 nanoparticles synthesized by the rapid thermal decomposition of tetra-butyl titanium (Ti(OC4H9)4) in the presence of acid treated MWCNTs, were attached on the surface of MWCNTs by means of chemical bonds under microwave irradiation. The addition of MWCNTs did not influence the structure of anatase TiO2. The photocatalytic performance evaluation of composite materials was conducted under UV and visible light using methyl orange (MO) as a typical pollutant. The enhancement in photocatalytic efficiency of nanocomposites was clearly observed by the presence of MWCNTs, which could contribute to improve the adsorption of MO dye, absorption of more light and also obstruct the photogenerated electron-hole pair's recombination.

©2020 Taylor & Francis Group, LLC
Original languageEnglish
Pages (from-to)175-183
JournalIntegrated Ferroelectrics
Volume211
Issue number1
Online published12 Oct 2020
DOIs
Publication statusPublished - 2020
Externally publishedYes

Funding

This project was financed partially by National Natural Science Foundation of China (No. 21503187 and 21301153).

Research Keywords

  • Anatase TiO2 nanoparticles
  • CNT-based composite photocatalyst
  • Conventional hydrothermal method
  • Microwave-assisted method

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