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| 1 | Environmental impact and health risk assessment of volatile organic compound emissions during different seasons in Beijing显示文摘Volatile organic compounds(VOCs)are major contributors to air pollution.Based on the emission characteristics of 99 VOCs that daily measured at 10 am in winter from 15 December 2015 to 17 January 2016 and in summer from 21 July to 25 August 2016 in Beijing,the environmental impact and health risk of VOC were assessed.In the winter polluted days,the secondary organic aerosol formation potential(SOAP)of VOC(199.70±15.05 mg/m^3)was significantly higher than that on other days.And aromatics were the primary contributor(98.03%)to the SOAP during the observation period.Additionally,the result of the ozone formation potential(OFP)showed that ethylene contributed the most to OFP in winter(26.00%and 27.64%on the normal and polluted days).In summer,however,acetaldehyde was the primary contributor to OFP(22.00%and 21.61%on the normal and polluted days).Simultaneously,study showed that hazard ratios and lifetime cancer risk values of acrolein,chloroform,benzene,1,2-dichloroethane,acetaldehyde and 1,3-butadiene exceeded the thresholds established by USEPA,thereby presenting a health risk to the residents.Besides,the ratio of toluene-to-benzene indicated that vehicle exhausts were the main source of VOC pollution in Beijing.The ratio of m-/p-xylene-toethylbenzene demonstrated that there were more prominent atmospheric photochemical reactions in summer than that in winter.Finally,according to the potential source contribution function(PSCF)results,compared with local pollution sources,the spread of pollution from long-distance VOCs had a greater impact on Beijing. | Chuanqi Li Qianqian Li Dongge Tong Qingliang Wang Mingge Wu Bohua Sun Guijin Su Li Tan | 2020 | Journal of Environmental Sciences2020，32，7： | 10 |
| 2 | Growth of carbon nanotubes on the novel FeCo-Al_2O_3 catalyst prepared by ultrasonic coprecipitation显示文摘FeCo-Al2O3 catalyst was prepared by an ultrasonic coprecipitation (UC) method for the growth of carbon nanotubes (CNTs) from catalytic decomposition of methane.Its catalytic performance was compared with that of the FeCo-Al2O3 catalyst counterparts prepared by stepwise impregnation (I) and conventional coprecipitation (C) methods,respectively.The structure and properties of the catalysts and the CNTs as produced thereon were investigated by means of XRD,XPS,TEM and N2 adsorption techniques.It was found that the catalyst prepared by the ultrasonic coprecipitation method was more active,and the yield and purity of the synthesized CNTs were promoted evidently.The XPS results revealed that there were more active components on the surface of the catalyst prepared by the ultrasonic coprecipitation method.On the other hand,N2 adsorption demonstrated that the catalyst prepared by the ultrasonic coprecipitation method conferred larger specific surface area,which was beneficial to dispersion of active components.TEM images further confirmed its higher dispersion.These factors could be responsible for its higher activity for the growth of CNTs from catalytic decomposition of methane. | Jie Wen Wei Chu Chengfa Jiang Dongge Tong | 2010 | Journal of Natural Gas Chemistry2010，19，2： | 2 |
| 3 | Preparation of mesoporous Co-B catalyst via self-assembled triblock copolymer templates显示文摘 | Tong Dongge Han Xue Chu Wei | 2007 | Materials Letters2007，61，25： | 1 |
| 4 | Preparation and characterization of amorphous Co-B catalysts with mesoporous structure显示文摘 | Tong Dongge Chu Wei Luo Yongyue | 2007 | Journal of Molecular Catalysis A : Chemical2007，269，： | 1 |
| 5 | Preparation and Characterization of Amorphous Co-B Catalysts with Mesoporous Sttucture显示文摘 | Tong Dongge Chu Wei Luo Yongyue | 2007 | J Mol Catal A: Chem2007，269，12： | 1 |
| 6 | Effects of preparation methods on the performance of Cu-Mo-Fe-O_x in the hydrogen production from water显示文摘Two Cu-Mo-Fe-Ox samples, which can store and supply pure hydrogen through repeated redox reaction (Fe3O4+4H23Fe+4H2O), were prepared by co-precipitation (FCM-C) and impregnation (FCM-I) methods, respectively, and the performance of hydrogen production from water were investigated. Compared with the impregnated sample, the co-precipitation sample presented better catalytic activity. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and temperature-programmed reduction (H2-TPR) techniques. XRD, FE-SEM and XPS results suggest that the FCM-C sample has smaller particle size and higher dispersion of iron oxide than that of FCM-I sample. In addition, FT-IR and H2-TPR analyses indicate that the weak interaction among metal oxides in FCM-C sample may induce facile reduction of active metal and superior property of hydrogen production by decomposing water in succession. | Si Chen Wei Chu Xu Liu Dongge Tong | 2011 | Journal of Natural Gas Chemistry2011，20，5： | 0 |
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