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Two kinds of hierarchical ZnO flower-like porous nanostructures with numerous nanosheets were successfully synthesised through a template-free and low-cost oxalic acid assisted solvothermal method combined with a heat post-treatment. The obtained products were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM results...
Synthesis of mesoporous TiO2 particles using ionic liquid (IL)-assisted sol-gel method was investigated. The product was analyzed and characterized by X-ray diffraction (XRD), Transmission electron microscope (TEM), and N2 adsorption and desorption. The products revealed higher photo catalytic activities than that of the commercially available TiO2, Degussa P25 in the photo degradation of methylene...
The photocatalysts of TiO2 nanoparticles coated on rice husk ash were prepared by the sol-gel method,which were characterized by XRD and TEM.The photocatalysts degradation of the pollutants in waste water of chromium.The results show that if the content of the Cr(VI) in waste water is 50mg·L-1 with the titania as adsorbent, the removal rate of Cr(VI) will reach 85%, which is obviously higher than...
A series of Zn2+ and Eu3+ co-doped TiO2 catalysts were prepared by a modified sol-gel method. The prepared catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy(TEM) and ultraviolet-visible diffuse reflection spectroscopy(UV-vis DRS). Characteristic results clearly show that all of Zn2+ and Eu3+ co-doped TiO2 samples exclusively consist of primary anatase crystallites,...
TiO2 is an ideal material for catalytic technology due to its unique properties. In this paper, the effect of Sm3+ dopant on the photocatalytic activity of TiO2 was studied to improve the catalytic efficiency of TiO2. The Sm3+-TiO2 photocatalyst was made from Titanium Tetrabutoxide and Samarium Oxide with the Sol-Gel process and used to degrade reactive orange 4 (RO4) in Azo Dyes. The characteristics...
In this research, cerium oxide (CeO2) nanoparticles were synthesized by the homogeneous precipitation. Cerium nitrate hexahydrate and ammonia solution were used as precursors. A mixture of water and ethylene glycol was used as solvent. The ratio of ethylene glycol /water mixed solvent was 80% by volume of ethylene glycol. Pure CeO2 nanoparticles were yellow powder. Particle size was found to be in...
A Cu2+-doped 2, 4-dichlorophenol (2, 4-DCP) molecularly imprinted TiO2-SiO2 nanocomposite catalyst was prepared by molecular imprinting technique in combination with sol-gel methods. The prepared material was characterised by X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption measurements. The photocatalytic...
Two-step hydrothermal method was developed to prepare B-doped TiO2 nanotubes (BTNTs). BTNTs was characterized by TEM, XRD, XPS, FT-IR, UV-Vis spectroscopy, its photocatalytic activity was evaluated by the degradation of methyl orange (MO) aqueous solution both under UV light and visible light irritation. The results from TEM indicated that BTNTs with diameter of 10-20 nm and length of several mum...
Cu/TiO2 composite nanoparticles were prepared by photoreduction deposition methods. The properties of the nanoparticles were widely characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) equipped with energy dispersive X-ray spectroscopy (EDS). Moreover, the antibacterial performances were performed by zone of inhibition (ZOI) tests against the bacteria species. The results...
In this work, a template-wetting method is introduced for fabrication of TiO2 nanotubes. Nanoporous alumina was used as a template. Morphology and structure of the nanotubes were analyzed by FE-SEM, XRD, and TEM techniques. It is confirmed that the nanotubes had both rutile and anatase phases, which are suitable for charge separation and gas sensor applications.
Various photocatalysts have been produced for the oxidation of airborne styrene. Commercial Degussa P25 (supported on vanadia-doped/undoped silica gel) and synthesized titania-pillared clay was used. Selected catalysts were characterized using SEM, TEM, XRD, TGA, UV-vis spectrophotometry, and nitrogen adsorption. This work represents the first phase of a study, aimed at degrading styrene in a fluidized-bed...
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