Next Article in Journal
Carbon Nitride Materials as Efficient Catalyst Supports for Proton Exchange Membrane Water Electrolyzers
Previous Article in Journal
Easy Synthesis and Characterization of Holmium-Doped SPIONs
Article Menu

Export Article

Open AccessArticle
Nanomaterials 2018, 8(6), 431; https://doi.org/10.3390/nano8060431 (registering DOI)

Preparation of TiO2/Carbon Nanotubes/Reduced Graphene Oxide Composites with Enhanced Photocatalytic Activity for the Degradation of Rhodamine B

1
College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
2
Fujian Key Laboratory of Photoelectric Functional Materials, Huaqiao University, Xiamen 361021, China
*
Author to whom correspondence should be addressed.
Received: 17 May 2018 / Revised: 10 June 2018 / Accepted: 11 June 2018 / Published: 13 June 2018
View Full-Text   |   Download PDF [3491 KB, uploaded 14 June 2018]   |  

Abstract

In this report, ternary titanium dioxide (TiO2)/carbon nanotubes (CNTs)/reduced graphene oxide (rGO) composites were fabricated by a facile and environmentally friendly one-pot solvethermal method for the removal of Rhodamine B (RhB). Its structures were represented by X-ray powder diffraction (XRD), Raman spectrometry, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The photocatalytic performance was tested by the degradation efficiency of RhB under UV-vis light irradiation. The experimental results indicated that photocatalytic activity improved as the ratio of CNTs:TiO2 ranged from 0.5% to 3% but reduced when the content increased to 5% and 10%, and the TiO2/CNTs/rGO-3% composites showed superior photocatalytic activity compared with the binary ones (i.e., TiO2/CNTs, TiO2/rGO) and pristine TiO2. The rate constant k of the pseudo first-order reaction was about 1.5 times that of TiO2. The improved photocatalytic activity can be attributed to the addition of rGO and CNTs, which reduced the recombination of photo-induced electron-hole pairs, and the fact that CNTs and rGO, with a high specific surface area and high adsorption ability to efficiently adsorb O2, H2O and organics, can increase the hydroxyl content of the photocatalyst surface. View Full-Text
Keywords: titanium dioxide; carbon nanotubes; graphene; photocatalyst titanium dioxide; carbon nanotubes; graphene; photocatalyst
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Share & Cite This Article

MDPI and ACS Style

Huang, Y.; Chen, D.; Hu, X.; Qian, Y.; Li, D. Preparation of TiO2/Carbon Nanotubes/Reduced Graphene Oxide Composites with Enhanced Photocatalytic Activity for the Degradation of Rhodamine B. Nanomaterials 2018, 8, 431.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top