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Your search keyword '"Yao, Qiang"' showing total 9 results
Start Over Author "Yao, Qiang" Journal journal of hazardous materials
9 results on '"Yao, Qiang"'

4. Characterization and photocatalytic property of Pd/TiO2 with the oxidation of gaseous benzene

Author

Jun Bo Zhong, Xi Yang He, Yao qiang Chen, Yan Lu, Wei Dong Jiang, Qing Ming Meng, and Jian Zhang Li

Subjects
Titanium, Environmental Engineering, Chemistry, Photochemistry, Health, Toxicology and Mutagenesis, Inorganic chemistry, chemistry.chemical_element, Environmental pollution, Benzene, Pollution, Catalysis, chemistry.chemical_compound, X-ray photoelectron spectroscopy, Titanium dioxide, Photocatalysis, Environmental Chemistry, Diffuse reflection, Gases, Waste Management and Disposal, Oxidation-Reduction, Palladium, Visible spectrum
Abstract

Increasing environmental pollution caused by the volatile organic compounds due to their toxicity is a matter of great concern. So it is crucial to develop processes which can destroy these compounds effectively. It has been found that the photocatalytic activity of TiO(2) towards the decomposition of gaseous benzene can be greatly enhanced by loading Pd on the surface of TiO(2). The results show that the optimum palladium loading is 0.25wt.%. The prepared photocatalysts were characterized by XRD, UV-vis diffuse reflectance and XPS. XRD results indicate that no peaks of Pd are detected in the 2theta region from 10 degrees to 90 degrees . Pd/TiO(2) absorbs much more light than TiO(2) in the visible light region. The XPS spectrum shows that there are Ti, O, C and Pd elements on the surface of the Pd/TiO(2), the binding energy values of Ti2p of 0.25%Pd/TiO(2) transfer to a lower value. In addition, the photocatalytic performance of 0.25%Pd/TiO(2) was investigated, the result illustrates that 0.25%Pd/TiO(2) demonstrates 2.32 times the photocatalytic activity of pure TiO(2). The reason of promotion of photocatalytic performance was discussed.

Published
2008

5. Catalytic combustion of toluene over platinum supported on Ce-Zr-O solid solution modified by Y and Mn

Author

Liu Zhi Min, Chen Yao Qiang, Gong Mao Chu, Zhong Jun Bo, Wang Jian Li, and Yan Sheng Hui

Subjects
Environmental Engineering, Coprecipitation, Health, Toxicology and Mutagenesis, Inorganic chemistry, chemistry.chemical_element, Cesium, Catalytic combustion, Incineration, Catalysis, chemistry.chemical_compound, X-Ray Diffraction, Environmental Chemistry, Yttrium, Waste Management and Disposal, Platinum, Manganese, Chemistry, Physical, Temperature, Equipment Design, Pollution, Toluene, Oxygen, chemistry, Metals, X-ray crystallography, Gases, Zirconium, Solid solution, Nuclear chemistry, Space velocity
Abstract

A series of CeO(2)-ZrO(2) mixed oxides were prepared using coprecipitation method and characterized by BET, oxygen storage capacity (OSC), X-ray diffraction (XRD) and H(2)-temperature-programmed reduction (H(2)-TPR). The catalytic activities toward toluene combustion were investigated in a micro-reactor. The results demonstrate that the catalytic activity of Pt/gamma-Al(2)O(3)/Ce(0.50)Zr(0.50)O(2) monolithic catalyst can be greatly improved by doping metal into Ce(0.50)Zr(0.50)O(2). When doping Y and Mn into Ce(0.50)Zr(0.50)O(2) simultaneously, the catalyst Pt/gamma-Al(2)O(3)/Ce(0.40)Zr(0.40)Y(0.10)Mn(0.10)O(X) shows the highest activity. The T(10) (the temperature of 10% toluene conversion) and the complete conversion temperature (the temperature of 90% toluene conversion) of toluene are 443 and 489K, respectively. Gas hourly space velocity (GHSV) results show that the prepared catalyst can be applied in a wide range of GHSV (from 12,000 to 20,000h(-1)). The catalyst prepared shows great potential for practical application.

Published
2007

9. Characterization and photocatalytic property of Pd/TiO2 with the oxidation of gaseous benzene

Author

Zhong, Jun Bo, Lu, Yan, Jiang, Wei Dong, Meng, Qing Ming, He, Xi Yang, Li, Jian Zhang, and Chen, Yao Qiang

Subjects
*POLLUTION, *VOLATILE organic compounds & the environment, *PHOTOCATALYSIS, *BENZENE, *PALLADIUM catalysts, *TITANIUM dioxide, *CHEMICAL decomposition, *X-ray diffraction, *X-ray photoelectron spectroscopy
Abstract

Abstract: Increasing environmental pollution caused by the volatile organic compounds due to their toxicity is a matter of great concern. So it is crucial to develop processes which can destroy these compounds effectively. It has been found that the photocatalytic activity of TiO2 towards the decomposition of gaseous benzene can be greatly enhanced by loading Pd on the surface of TiO2. The results show that the optimum palladium loading is 0.25wt.%. The prepared photocatalysts were characterized by XRD, UV–vis diffuse reflectance and XPS. XRD results indicate that no peaks of Pd are detected in the 2θ region from 10° to 90°. Pd/TiO2 absorbs much more light than TiO2 in the visible light region. The XPS spectrum shows that there are Ti, O, C and Pd elements on the surface of the Pd/TiO2, the binding energy values of Ti2p of 0.25%Pd/TiO2 transfer to a lower value. In addition, the photocatalytic performance of 0.25%Pd/TiO2 was investigated, the result illustrates that 0.25%Pd/TiO2 demonstrates 2.32 times the photocatalytic activity of pure TiO2. The reason of promotion of photocatalytic performance was discussed. [Copyright &y& Elsevier]

Published
2009
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