Modified microwave method for the synthesis of visible light-responsive TiO2/MWCNTs nanocatalysts

Abstract

Recently, TiO2/multi-walled carbon nanotube (MWCNT) hybrid nanocatalysts have been a subject of high interest due to their excellent structures, large surface areas and peculiar optical properties, which enhance their photocatalytic performance. In this work, a modified microwave technique was used to rapidly synthesise a TiO2/MWCNT nanocatalyst with a large surface area. X-ray powder diffraction, field-emission scanning electron microscopy, transmission electron microscopy and Brunauer-Emmett-Teller measurements were used to characterise the structure, morphology and the surface area of the sample. The photocatalytic activity of the hybrid nanocatalysts was evaluated through a comparison of the degradation of methylene blue dye under irradiation with ultraviolet and visible light. The results showed that the TiO2/MWCNT hybrid nanocatalysts degraded 34.9% of the methylene blue (MB) under irradiation with ultraviolet light, whereas 96.3% of the MB was degraded under irradiation with visible light.

Monodisperse Sr–La2O3hybrid nanofibers for oxidative coupling of methane to synthesize C2hydrocarbons

“…Hybrid nanocatalysts with different components arranged in a controlled structure are widely used in industry since they can provide an entirely novel activity and selectivity for many important chemical reactions via the coupling between components within the hybrids. [1][2][3] This class of hybrid nanomaterials combines dissimilar materials into a single multifunctional material, and facilitates the electron or charge and energy flow between constituent hybrids. [4][5][6] Different functionalities from each component of hybrids can be integrated to bring about a synergistic effect and a new functionality, so the hybrid nanocatalysts are desirable for catalytic reactions.…”

A Comparison Study of Different Photocatalyst Preparation Methods: A Review on RGO-BI2MoO6 Photocatalyts Synthesis Methods

“…In comparison to the former mechanism, this process allows for faster energy transfer and the absorption of microwave irradiation is efficient. The energy transfer is able to uniformly heat material, it also has an ability to heat even thicker materials in a short space of time because the microwaves can penetrate the material and stores energy [39][40][41][42]. The heat transfer in a material via microwave method is uniformly distributed, as a result less by-products are formed, if the equipment is well-designed in addition, this method provides a uniform and speedy reaction environment to form materials with homogenous morphology.…”

Porous (001)-faceted anatase TiO2nanorice thin film for efficient dye-sensitized solar cell

“…The TiO 2 nanorices were synthesized on an ITO substrate by using a microwave-assisted liquid phase deposition method [22][23][24]. In typical process, the TiO 2 nanorices were prepared by immersing a cleaned ITO substrate (sheet resistance ca.…”