Next Article in Journal
An Overview of Scaffold Design and Fabrication Technology for Engineered Knee Meniscus
Next Article in Special Issue
Photocatalytic Degradation of Organic Dye under UV‐A Irradiation Using TiO2‐Vetiver Multifunctional Nano Particles
Previous Article in Journal
Influence of Porous Spherical-Shaped Hydroxyapatite on Mechanical Strength and Bioactive Function of Conventional Glass Ionomer Cement
Previous Article in Special Issue
First Principles Study on the Interaction Mechanisms of Water Molecules on TiO2 Nanotubes
Open AccessArticle

Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania

Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar 31900, Perak, Malaysia
Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad 826004, Jharkhand, India
Department of Environmental Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
Author to whom correspondence should be addressed.
Academic Editor: Walid Daoud
Materials 2017, 10(1), 28;
Received: 8 November 2016 / Revised: 13 December 2016 / Accepted: 15 December 2016 / Published: 3 January 2017
(This article belongs to the Special Issue Enhancing the Photocatalytic Activity of TiO2 Photocatalysts)
The visible-light-driven photocatalytic degradation of Bisphenol A (BPA) was investigated using the binary composite of alkaline treated g-C3N4 (HT-g-C3N4) deposited over commercial TiO2 (Evonik Degussa GmbH, Essen, Germany). The existence and contribution of both TiO2 and g-C3N4/HT-g-C3N4 in the composite was confirmed through various analytical techniques including powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-vis-DRS), and photoluminescence (PL) analysis. The results showed that the titania in the binary composite exhibited both pure rutile and anatase phases. The morphological analysis indicated that the spongy “morel-like” structure of g-C3N4 turned to nanotube form after alkaline hydrothermal treatment and thereby decreased the specific surface area of HT-g-C3N4. The low surface area of HT-g-C3N4 dominates its promising optical property and effective charge transfer, resulting in a deprived degradation efficiency of BPA two times lower than pure g-C3N4. The binary composite of HT-g-C3N4/TiO2 exhibited excellent degradation efficiency of BPA with 2.16 times higher than the pure HT-g-C3N4. The enhanced photocatalytic activity was mainly due to the promising optical band gap structure with heterojunction interface, favorable specific surface area, and good charge separation. View Full-Text
Keywords: TiO2; g-C3N4; visible light; alkaline hydrothermal; Bisphenol A (BPA) TiO2; g-C3N4; visible light; alkaline hydrothermal; Bisphenol A (BPA)
Show Figures

Figure 1

MDPI and ACS Style

Sim, L.C.; Tan, W.H.; Leong, K.H.; Bashir, M.J.K.; Saravanan, P.; Surib, N.A. Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania. Materials 2017, 10, 28.

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.

Article Access Map by Country/Region

Back to TopTop