期刊
APPLIED SURFACE SCIENCE
卷 377, 期 -, 页码 149-158出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2016.03.120
关键词
Graphene; TiO2 nanotube; Porphyrin; Visible-light driven photocatalyst; Nanocomposites
类别
资金
- Natural Science Foundation of Zhejiang Province [LY13B030009]
- Science Foundation of Zhejiang Sci-Tech University (ZSTU) [1101820-Y]
- Zhejiang Top Priority Discipline of Textile Science and Engineering
In this paper, TiO2 nanotubes (TNT) co-sensitized with copper(II) meso-tetra(4-carboxyphenyl)porphyrin (CuTCPP) and reduced graphene oxide nanosheets (rGO), which was fabricated through two-step improved hydrothermal method and heating reflux process. The effect of rGO and CuTCPP on the co-photocatalytic behavior of TNT for the degradation of Methylene Blue (MB) were measured under visible light irradiation. The photocatalysts have been characterized and analyzed by high-resolution transmission electron microscopy (TEM), selected area electronic diffraction (SAED), elemental mapping by energy-dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and electron paramagnetic resonance (EPR). The results provide a deeper insight into the co-photocatalytic mechanism of CuTCPP/rGO-TNT nanocomposites. The degradation results showed a purification of more than 95% MB in wastewater, which is about 5 times higher than that of the pure TNT. The results also confirm the prepared CuTCPP/rGO-TNT nanocomposites possess superior co-photocatalytic activities. (C) 2016 Elsevier B.V. All rights reserved.
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