scholarly journals Preparation and Photocatalytic Performance of Ti3C2/TiO2/CuO Ternary Nanocomposites

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Yang Lu ◽  
Meihuan Yao ◽  
Aiguo Zhou ◽  
Qianku Hu ◽  
Libo Wang
Keyword(s):  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Energy Dispersive Spectrometer ◽  
Argon Atmosphere ◽  
Nitrate Content ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cupric Nitrate ◽  
Microscopy Images ◽  
Degradation Of Methyl Orange

Ti3C2/TiO2/CuO nanocomposites were synthesized via the decomposition of a mixture of Ti3C2 (a novel two-dimensional carbide) and cupric nitrate under an argon atmosphere. The morphology and structures of the obtained samples were characterized. X-ray diffraction and energy dispersive spectrometer analysis indicate that the sample is composed of Ti3C2, anatase-TiO2, and CuO. Scanning electron microscopy images show that CuO and TiO2 nanoparticles were evenly distributed on the surface of Ti3C2. The particles size increased with an increase in the cupric nitrate content. Photocatalytic degradation of methyl orange shows that the Ti3C2/TiO2/CuO nanocomposite has good photocatalytic degradation efficiency. A possible photocatalytic mechanism of the Ti3C2/TiO2/CuO nanocomposites was proposed. The data indicated that CuO and Ti3C2 effectively promote the separation of photoelectrons from vacancies.

Preparation and Photocatalytic Properties of Rod-Shaped TiO2 Based on Salix Fiber

2014 ◽  
Vol 609-610 ◽  
pp. 250-254
Author(s):  
Ya Bin Li ◽  
Jin Tian Huang ◽  
Yan Fei Pan
Keyword(s):  
Photocatalytic Performance ◽  
Sol Gel ◽  
Average Diameter ◽  
X Ray Diffraction ◽  
Nanocomposite Structure ◽  
X Ray ◽  
Infrared Spectrometer ◽  
Ft Ir ◽  
Degradation Of Methyl Orange ◽  
Scanning Electron

In the paper, the TiO2nanomaterials adopted the microcrystalline cellulose as the template by the template method and sol-gel method was prepared. Through the infrared spectrometer (FT-IR), scanning electron microscope (SEM), X-ray diffraction (XRD), the surface morphology, composition and the type of the samples were characterized respectively. The influence of the macro morphology of TiO2photocatalytic performance to use the reaction of decolorization and degradation of methyl orange as model was analyzed. The results showed that TiO2which was produced by the template of sallix fiber was Rod-shaped and the average diameter size of nanocomposite structure was 20.592 nm, which can provide a new method of producing other morphology of TiO2.

scholarly journals Photocatalytic degradation of tartrazine dye using CuO straw-sheaf-like nanostructures

2017 ◽  
Vol 75 (6) ◽  
pp. 1421-1430 ◽  
Author(s):  
Martha Purnachander Rao ◽  
Jerry J. Wu ◽  
Abdullah M. Asiri ◽  
Sambandam Anandan
Keyword(s):  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Chemical Precipitation ◽  
Degradation Pathway ◽  
Gas Chromatography Mass Spectrometry ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis

Straw-sheaf-like CuO nanostructures were fruitfully synthesized using a chemical precipitation approach for the photocatalytic degradation assessment of tartrazine. Phase identification, composition, and morphological outlook of prepared CuO nanostructures were established by X-ray diffraction and scanning electron microscopy analysis. The photocatalytic performance of the synthesized CuO nanostructures was appraised in the presence of visible light and the possible intermediates formed during the photocatalytic degradation were analyzed by gas chromatography–mass spectrometry. A suitable degradation pathway has also been proposed.

Photocatalytic Performance of Polyoxometallate Intercalated Layered Double Hydroxide

2010 ◽  
Vol 663-665 ◽  
pp. 187-190 ◽  
Author(s):  
Yu Hui Zhang ◽  
Ji Xin Su ◽  
Xiao Peng Wang ◽  
Qi Pan ◽  
Wen Qu
Keyword(s):  
Methyl Orange ◽  
Ir Spectra ◽  
Photocatalytic Performance ◽  
Uv Light ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Ft Ir ◽  
Double Hydroxide ◽  
Degradation Of Methyl Orange

Based on X-ray diffraction results, the gallery height of modified Mg3Al-LDH was expanded to 9.6Å from the original 4.8Å, indicating that the H3PW12O40 was indeed inserted into the hydroxide layers. Moreover, the results of FT-IR spectra proved the Keggin structure of PW11O397- species. The resulting material showed a high activity of degradation of methyl orange in the presence of H2O2 and UV light irradiation.

Relationship between Planes of Cu2O Microcrystal and Photo-Catalytic Degradation of Methylene Blue

2013 ◽  
Vol 807-809 ◽  
pp. 562-566
Author(s):  
Wei Dong Shi ◽  
Dan Yan ◽  
Wei Qiang Fan
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
Co Catalyst ◽  
X Ray ◽  
Main Influence ◽  
Better Than

Four kinds of Cu2O microcrystals with different morphologies are synthesized via low temperature hydrothermal synthetic method. The photocatalytic degradation of methylene blue (MB) of the above different Cu2O is preliminary explored based on this observation. 6-facet, 8-facet, 14-facet are prepared by PVP system and 26-facet is prepared by NaOH system. They are characterized by means of Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Diffuse Reflectance Spectra (DRS). Under 150 W xenon lamp irradiation, 0.5 gL1 catalyst and 0.1% (v/v) 30% H2O2 as co-catalyst are used to degrade 5% 100 mL MB solution. The reaction time is 80 min. 26-facet Cu2O polyhedral discolor about 89.48% of MB while 6-facet Cu2O microcrystal about discolor about 20.18% which is the lowest decolourization rate among all the samples. The photocatalytic performance of 8-facet Cu2O microcrystal is slight better than that of 14-facet. The decolourization rate of 8-facet and 14-facet are 56.00% and 41.08%, respectively. The main reason is that the planes of Cu2O microcrystal have a main influence on photocatalytic degradation of MB.

Photocatalytic Degradation of Methyl Orange on Ce-TiO2 under Visible Light Irradiation

2012 ◽  
Vol 529 ◽  
pp. 528-531
Author(s):  
Zhi Gang Duan ◽  
Qin Yu Li ◽  
Xv Yun Zhao ◽  
Zhi Ming Peng ◽  
Shen Hua Zhang
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Threshold Value ◽  
Absorption Efficiency ◽  
Doping Content ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Visible ◽  
Doping Ratio ◽  
Degradation Of Methyl Orange

In this article, the Ce-TiO2have been prepared by Sol-gel method to study the photocatalytic activity of Ce-TiO2photocatalyst.The effects of doping ratio on the crystal structure, Absorption spectrum and photocatalytic degradation of methylene were studied and characterized by X-ray diffraction and UV–visible spectrometer.The results indicate:with the increase of the CeO2doping content to TiO2, the absorption efficiency of the Ce-TiO2correspondingly increases. When CeO2doping content is 50%, the absorbing wavelength threshold value reaches the highest 520nm .The rate of degradation on methylene of the sample is higher than that of Degause P25 after 4h irradiated by sunshine. When the ratio is 11%, the degradation rate reaches the highest 87%. The paper systemical investigate the relationships between CeO2doping tatio, microstructure, and macro-performances of Ce-TiO2for the first time.These results provide guild for the future inductrical production of efficient photocatalyst.

Preparation of TiO2-diatomite composites by ball-milling and its photocatalytic degradation of methyl orange

2011 ◽  
Vol 11 (1) ◽  
pp. 121-127 ◽  
Author(s):  
Yanxi Deng ◽  
Xuming Wang ◽  
Jinfeng Yin ◽  
Yanfeng Li ◽  
Hao Ding ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Ball Milling ◽  
Particle Concentration ◽  
Milling Time ◽  
Weight Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ball Milling Technique ◽  
Degradation Of Methyl Orange

TiO2-diatomite composites were prepared using a two–stage ball-milling technique and they were subsequently characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and FTIR, showing that nanotitania had been successfully supported on the surface of diatomite. The as-prepared TiO2–diatomite composites were used to decompose methyl orange (MO). Good degradation efficiency was observed. The effects of milling conditions, such as milling time of diatomite suspension, the diatomite particle concentration in suspension, weight ratio of ball-to-powder, milling time of the mixed TiO2-diatomite suspension and dosage of titania, on photocatalytic degradation performance were systematically examined for the sake of achieving the best efficiency.

Effective photocatalytic degradation of an azo dye over nanosized Ag/AgBr-modified TiO2 loaded on zeolite

2011 ◽  
Vol 65 (3) ◽  
Author(s):  
Mohsen Padervand ◽  
Mahboubeh Tasviri ◽  
Mohammad Gholami
Keyword(s):  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Catalyst Concentration ◽  
Sol Gel ◽  
Nitrogen Adsorption ◽  
Textile Dye ◽  
X Ray Diffraction ◽  
X Ray ◽  
Adsorption Desorption ◽  
Acid Blue

AbstractZeolite-based photocatalysts were prepared by the sol-gel and deposition methods. The photocatalysts were characterised by X-ray diffraction, nitrogen adsorption-desorption isotherms, FTIR spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectrometry. The activity of the prepared photocatalysts was evaluated by the UV-induced degradation of acid blue 92, a textile dye in common use. The effect of various parameters, such as catalyst concentration, initial dye concentration, thiosulphate concentration and pH, on the rate and efficiency of the photocatalytic degradation of acid blue 92 was investigated. The results showed that each parameter influenced the degradation rate and efficiency in a particular way. It was also found that, under optimised conditions, Ag/AgBr/TiO2/zeolite exhibited the highest photocatalytic performance. A comparison of catalytic activity when exposed to visible light under the same conditions showed that the photocatalysts containing AgBr had the highest activity.

Preparation and High Photocatalytic Performance of Spherical BiOCl Photocatalyst

2018 ◽  
Vol 914 ◽  
pp. 168-174
Author(s):  
Jun Qing Chang ◽  
Yan Zhong ◽  
Chao Hao Hu ◽  
Zong Wei Ji ◽  
Yi Fan Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Energy Dispersive Spectrometer ◽  
Light Irradiation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Excellent Photocatalytic Activity ◽  
Facile Solvothermal Method

The smooth spherical BiOCl photocatalyst was synthesized successfully by a facile solvothermal method and further characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectrometer and UV-Vis diffuse reflectance spectra techniques. The photocatalytic activity of as-prepared photoctalyst was evaluated by the degradation of Rhodamine B (RhB) under visible light irradiation (λ>420 nm). The results showed that the BiOCl with smooth spherical morphology exhibits an excellent photocatalytic activity and stability. RhB was thoroughly degraded after 60 min of visible light irradiation.

Preparation of Cu/ZrW2O8 Gradient Films Using Different Targets

2011 ◽  
Vol 66-68 ◽  
pp. 1808-1811
Author(s):  
Xue Yan ◽  
M. Li ◽  
Jun Li ◽  
X. Cheng
Keyword(s):  
Electron Microscopy ◽  
Energy Dispersive Spectrometer ◽  
Rf Magnetron Sputtering ◽  
Argon Atmosphere ◽  
Silicon Substrates ◽  
X Ray Diffraction ◽  
Post Deposition Annealing ◽  
X Ray ◽  
Post Deposition ◽  
Scanning Electron

The Cu/ZrW2O8gradient films have been deposited on silicon substrates by RF magnetron sputtering with copper and compound targets followed by annealing in argon atmosphere at 750 °C for 3 min. The three different compound targets were B1 (nZrO2:nWO3=1:2.2), B2 (nZrO2:nWO3=1:2.5) and B3 (ZrW2O8), respectively. The as-deposited gradient films were amorphous, while a post-deposition annealing at elevated temperature was required for the development of the cubic ZrW2O8. The structure and surface morphology of the gradient films were then studied using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometer (EDS). The globular and slender rod crystals can be found in annealed films, which are copper and ZrW2O8, respectively. The fine gradient film should be obtained using the target B1.

Simplistic Synthesis and Enhanced Photocatalytic Performance of Spherical ZnO Nanoparticles Prepared from Arabinose Solution

2019 ◽  
Vol 74 (10) ◽  
pp. 937-944 ◽  
Author(s):  
Babiker Y. Abdulkhair ◽  
Mutaz E. Salih ◽  
Nuha Y. Elamin ◽  
A. MA. Fatima ◽  
A. Modwi
Keyword(s):  
Zno Nanoparticles ◽  
Photocatalytic Performance ◽  
Hexagonal Wurtzite Structure ◽  
Zinc Nitrate ◽  
Wurtzite Structure ◽  
Sugar Solution ◽  
X Ray Diffraction ◽  
Pollutant Degradation ◽  
X Ray ◽  
Good Crystallinity

AbstractStrenuous efforts have been employed to prepare zinc oxide (ZnO) with eco-friendly methods; however, few studies have reported the fabrication of ZnO using a sustainable procedure. In this study, spherical ZnO nanoparticles were successfully fabricated for photocatalysis applications using a simple and eco-friendly method using an arabinose sugar solution. The ZnO nanoparticles with a wurtzite structure were obtained by combining zinc nitrate and arabinose in water, followed by heating, evaporation, and calcinations at different annealing temperatures. The annealed ZnO photocatalysts were characterised via X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The findings revealed a hexagonal wurtzite structure and good crystallinity with crystallite size increasing from 18 to 31 nm by means of an increase in the annealing temperature. The photocatalytic performance was examined to determine the degradation of mix dye waste. The spherical ZnO nanoparticles showed mix pollutant degradation of 84 % in 25 min at 400 °C.

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