Effect of Double Elements Co-Doping on Nano-TiO2 Photocatalysis of Rhodamine B Solution

2013 ◽  
Vol 798-799 ◽  
pp. 25-29
Author(s):  
Su Huang ◽  
Li Zhen Yang ◽  
Fu Yun Li
Keyword(s):  
Rhodamine B ◽  
Degradation Rate ◽  
Photocatalytic Property ◽  
Thermal Method ◽  
Metallic Elements ◽  
X Ray Diffraction ◽  
Minimum Diameter ◽  
X Ray ◽  
Co Doping

Hydro-thermal method was applied to synthesize nanoTiO2particles doped with metal and non-metallic elements. nanoTiO2particles were doped at different calcinations temperatures with S and Fe, Ce and La, respectively. X-ray diffraction results indicated that the minimum diameter of nanoTiO2doped with Ce and S was about 7.2nm, which is smaller than other type of double-element doped nanoTiO2. In addition, with the increase of calcinations temperature, the size of nanoTiO2particle increased and the diameter of nanoTiO2doped with Fe and S was the most obvious one. Rhodamine B was used to simulate the pollutant to analyze the photocatalytic property of doped nanoTiO2. The results indicated that the degradation rate of rhodamine B by nanoTiO2doped with La and S under the calcinations temperature of 450 °C reached66.22%.

scholarly journals Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1671 ◽  
Author(s):  
Weike Zhang ◽  
Yanrong Zhang ◽  
Kai Yang ◽  
Yanqing Yang ◽  
Jia Jia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electronic Microscope

A silicon dioxide/carbon nano onions/titanium dioxide (SiO2/CNOs/TiO2) composite was synthesized by a simple sol-gel method and characterized by the methods of X-ray diffraction (XRD), scanning electronic microscope (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR), thermogravimetric analysis (TG), differential scanning calorimeter (DSC) and UV-Vis diffuse reflectance spectra (UV-Vis DRS). In this work, the photocatalytic activity of the SiO2/CNOs/TiO2 photocatalyst was assessed by testing the degradation rate of Rhodamine B (RhB) under visible light. The results indicated that the samples exhibited the best photocatalytic activity when the composite consisted of 3% CNOs and the optimum dosage of SiO2/CNOs/TiO2(3%) was 1.5 g/L as evidenced by the highest RhB degradation rate (96%). The SiO2/CNOs/TiO2 composite greatly improved the quantum efficiency of TiO2. This work provides a new option for the modification of subsequent nanocomposite oxide nanoparticles.

Synthesis, Structure Characterization and Photocatalytic Property of a New 3-D Polyoxovanadate-Based Organic-Inorganic Hybrid Compound

2014 ◽  
Vol 997 ◽  
pp. 260-263 ◽  
Author(s):  
Ya Bing Liu ◽  
Peng Yu
Keyword(s):  
Transition Metal ◽  
Elemental Analysis ◽  
Rhodamine B ◽  
Photocatalytic Property ◽  
Building Blocks ◽  
Structure Characterization ◽  
X Ray Diffraction ◽  
Hybrid Compound ◽  
Inorganic Hybrid ◽  
X Ray

A new polyoxovanadates-based organic-inorganic hybrid compound, [Cu(en)2]2[VV6VIV4O25] (1) has been hydrothermally synthesized and structurally characterized by the elemental analysis, and single crystal X-ray diffraction. Compound 1 consists of [Cu(en)2]2+transition metal coordination fragment and the [VV6VIV4O25]4-building blocks, which are linked together via covalently-bonding interactions to form a new 3-D networks. The degradation of rhodamine B (RhB) under UV-vis irradiation with 1 as the heterogeneous photocatalyst has been investigated, showing a good photocatalytic property of 1 for RhB degradation.

The Effect of Double-Element Doping on the Photocatalytic Property of Nano-TiO2

2013 ◽  
Vol 669 ◽  
pp. 371-376
Author(s):  
Su Huang ◽  
Fu Yun Li ◽  
Yang Li ◽  
Li Zhen Yang
Keyword(s):  
Methyl Orange ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Tio2 Particle ◽  
Metallic Elements ◽  
X Ray Diffraction ◽  
Nano Tio2 ◽  
Minimum Diameter ◽  
Tio2 Particles ◽  
Element Doping

Sol-gel method was applied to synthesize nano-TiO2 particles doped with metal and non-metallic elements. Nano-TiO2 particles were doped at different calcinations’ temperatures with S and Fe, Ce and La, respectively. A comparison was performed on the effect of different metallic elements on nano-TiO2 particles doped with the same non-metallic element S. X-ray diffraction results indicated that the diameter of doped nano-TiO2 particle was smaller than that of non-doped nano-TiO2 particles. The minimum diameter of nano-TiO2 doped with Ce and S was about 8nm, while that of nano-TiO2 doped with La and S was about 9nm. The minimum diameter of nano-TiO2 particles doped with Fe and S was about 10nm. In addition, with the increase of calcinations’ temperature, the size of nano-TiO2 particle increased. All nano-TiO2 particles doped with double elements were antae. Methyl orange was used to simulate the pollutant to analyze the photocatalytic property of doped nano-TiO2. The results indicated that the doped element had some effect on the photocatalytic property of nano-TiO2, and varied for different doped metallic elements. Among them, the degradation rate of methyl orange by nano-TiO2 doped with La and S under the calcinations’ temperature of 550 °C reached 28.97%.

scholarly journals Photocatalytic Degradation of 2,4-Dichlorophenol Using Nanosized Na2Ti6O13/TiO2Heterostructure Particles

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Zicong Jian ◽  
Shaobin Huang ◽  
Yongqing Zhang
Keyword(s):  
Degradation Rate ◽  
Photocatalytic Property ◽  
Tetrabutyl Titanate ◽  
Composite Particles ◽  
Nanosized Particles ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Initial Concentration ◽  
X Ray ◽  
Scanning Electron

Na2Ti6O13/TiO2composite particles were synthesized through the hydrolyzation of tetrabutyl titanate in a reverse microemulsion and characterized by thermogravimetry and differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), and scanning electron microscope (SEM). The photocatalytic property of Na2Ti6O13/TiO2was evaluated by degradation of 2,4-dichlorophenol(2,4-DCP) under 40 W ultraviolet lamp (λ=365 nm) irradiation and compared with commercial P25-TiO2in the same condition. The results showed that the synthesized nanobelts Na2Ti6O13/TiO2heterostructures had typical width from 80 to 100 nm, with thickness less than 40 nm and length up to 5 μm. Such Na2Ti6O13/TiO2nanosized particles exhibited better photocatalytic activity than that of P25-TiO2, and the degradation rate of 2,4-DCP with initial concentration of 0.02 g/L reached 99.4% at the end of 50 min.

Photooxidation Activity of Mixed Phase TiO2 Nanoparticles

2014 ◽  
Vol 998-999 ◽  
pp. 79-82
Author(s):  
Jing Wei ◽  
Liang Guo Yan ◽  
Hang Li ◽  
Yi Yi Zhao
Keyword(s):  
Aqueous Solution ◽  
Crystal Structures ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixing Ratios ◽  
Calcination Temperatures ◽  
Sol Gel Process

The different mixing ratios of TiO2 nanoparticles were synthesized using sol–gel process by changing the temperature of calcinations. The crystal structures were characterized by X-ray diffraction (XRD). The photocatalytic action of TiO2 nanoparticles was investigated through the photooxidation of Rhodamine B in aqueous solution. The XRD results indicated that the rutile ratios of different calcination temperatures (500°C, 600°C, 700°C and 800°C, respectively) TiO2 nanoparticles were 0%, 20.87%, 92.41% and 100%, respectively. The TiO2 nanoparticles which calcinated at 600 °C had the highest photocatalytic action; under UV irradiation of 4 h, initial Rhodamine B concentration of 15 mg/L, TiO2 nanoparticles (calcinated at 600 °C) dosage of 1g/L, the degradation rate of Rhodamine B could achieve to 97.87%. The addition of rutile to anatase could particularly improve the photooxidation activity of TiO2 nanoparticles.

Photocatalytic Activity of CdSe/K2La2Ti3O10 for Rhodamine B Degradation under Visible Light Illumination

2013 ◽  
Vol 726-731 ◽  
pp. 577-579
Author(s):  
Li Liu ◽  
Ya Fei Wang ◽  
Huan Wang ◽  
Wen Quan Cui ◽  
Ying Hua Liang
Keyword(s):  
Visible Light ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Precipitation Method ◽  
Light Illumination ◽  
Halogen Lamp ◽  
X Ray Diffraction ◽  
X Ray ◽  
Visible Light Illumination ◽  
Catalyst Dosage

The composite CdSe/K2La2Ti3O10 photocatalyst was synthesized via a precipitation method. The structure of the photocatalyst was determined by powder X-ray diffraction. The photocatalytic properties for organic matter degradation of the photocatalyst were examined under visible light irradiation, using rhodamine B as the goal degradation content and halogen lamp (λ > 420 nm) for the light source. The results show that when the pH of the rhodanmine B at 7, initial concentration of 10 mg/L and every 250 mL solution catalyst dosage is 0.25 g, and the degradation rate of rhodamine B for 4 hours was 50%.

Preparation and Photocatalytic Property of Platinum-Modified TiO2 Ceramic Film Using Different Compound Techniques

2007 ◽  
Vol 336-338 ◽  
pp. 1939-1942
Author(s):  
Yan Li Jiang ◽  
Hui Ling Liu ◽  
Zhao Hua Jiang ◽  
Zhong Ping Yao ◽  
Rui Hai Cui ◽  
...  
Keyword(s):  
Humic Acid ◽  
Tio2 Film ◽  
Degradation Rate ◽  
Film Surface ◽  
Photocatalytic Property ◽  
Ion Sputtering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ceramic Film ◽  
Tio2 Ceramic

The anodized TiO2 ceramic film was post-treated by photoreduction and ion sputtering, respectively, to deposit platinum on the surface of the films. Surface morphology, the main elements of the films and platinum distribution on the film surface were investigated by scanning electron microscopy and energy dispersive spectroscopy. The phase composition of the films was examined by X-ray diffraction. The photocatalytic activity was compared through the effect of the films on photocatalytic (PC) degradation rate of the humic acid. The results showed that both films were composed of Pt5Ti3, rutile (R) TiO2 and anatase (A) TiO2, and the content of TiO2 (R) of the film prepared by photoreduction was a little more than that of the film by ion sputtering. Compared with Pt on the Pt-TiO2 ceramic film by photoreduction, Pt on the Pt-TiO2 film by ion sputtering dispersed more evenly and the grains were much smaller. Pt particulates in the film post-treated by ion sputtering were more strongly combined with the film than those by photoreduction. Besides, the PC degradation rate of humic acid by both Pt-TiO2 films were higher than that by TiO2 film, and Pt-TiO2 film by ion sputtering had higher catalytic activity and longer using life than that by photoreduction.

scholarly journals Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 558
Author(s):  
Wenhui Zhu ◽  
Caiyun Zhang ◽  
Yali Chen ◽  
Qiliang Deng
Keyword(s):  
Methylene Blue ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Degradation Rate ◽  
Model Compound ◽  
Vibrating Sample Magnetometer ◽  
Simulated Sunlight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir

Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.

Tribological Behavior of Mesophase Carbon Added with Titanium and Copper

2011 ◽  
Vol 80-81 ◽  
pp. 60-63
Author(s):  
Xue Qing Yue ◽  
Hua Wang ◽  
Shu Ying Wang
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Friction Coefficient ◽  
Ball Mill ◽  
Friction And Wear ◽  
Applied Load ◽  
Tribological Behavior ◽  
Metallic Elements ◽  
X Ray Diffraction ◽  
X Ray

Incorporation of metallic elements, titanium and copper, into carbonaceous mesophase (CM) was performed through mechanical alloying in a ball mill apparatus. The structures of the raw CM as well as the Ti/Cu-added CM were characterized by X-ray diffraction. The tribological behavior of the Ti/Cu-added CM used as lubricating additives was investigated by using a high temperature friction and wear tester. The results show that, compared with the raw CM, the Ti/Cu-added CM exhibits a drop in the crystallinity and a transition to the amorphous. The Ti/Cu-added CM used as lubricating additive displays an obvious high temperature anti-friction and wear resistance effect, and the lager the applied load, the lower the friction coefficient and the wear severity.

W-Doped TiO2 Preparation and Photocatalytic Degradation of Guaiacol

2014 ◽  
Vol 513-517 ◽  
pp. 33-36 ◽  
Author(s):  
Zi Chang Xie ◽  
Ying Wang ◽  
Peng Wang ◽  
Lei Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Degradation Rate ◽  
Amorphous State ◽  
X Ray Diffraction ◽  
Model Compounds ◽  
Plant Fibers ◽  
X Ray ◽  
Crystallite Structure

In this paper, W-doped TiO2 (W-TiO2) powder was prepared in hydrothermal method by mixing TiO2 and ammonium metatungstate. The catalysts were characterized by X-ray diffraction and ultraviolet spectrophotometer. The results displayed that W-TiO2 showed an anatase crystallite structure with 2 % W content. W-element in W-TiO2 was amorphous state. The guaiacol was degraded with the W-TiO2 in the visible light. It was a model compounds of lignin existed in the plant fibers. The degradation rate of guaiacol was increased with the photocatalytic time, as high as 88.21 % after 360 min irradiation. It was concluded that the W-TiO2 had an obvious photocatalytic activity under visible light. It can be used in the photocatalytic degradation of lignin.

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