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5篇 您的检索式:作者名="Xingmao Ma"
    题名 作者 年代 出处 被引量
1Effects of particle composition and environmental parameters on catalytic hydrodechlorination of trichloroethylene by nanoscale bimetallic Ni-Fe显示文摘Catalytic nickel was successfully incorporated into nanoscale iron to enhance its dechlorination efficiency for trichloroethylene(TCE), one of the most commonly detected chlorinated organic compounds in groundwater. Ethane was the predominant product. The greatest dechlorination efficiency was achieved at 22 molar percent of nickel. This nanoscale Ni-Fe is poorly ordered and inhomogeneous; iron dissolution occurred whereas nickel was relatively stable during the 24-hr reaction. The morphological characterization provided significant new insights on the mechanism of catalytic hydrodechlorination by bimetallic nanoparticles. TCE degradation and ethane production rates were greatly affected by environmental parameters such as solution pH, temperature and common groundwater ions. Both rate constants decreased and then increased over the pH range of 6.5 to 8.0, with the minimum value occurring at pH 7.5. TCE degradation rate constant showed an increasing trend over the temperature range of 10 to 25?C. However, ethane production rate constant increased and then decreased over the range, with the maximum value occurring at 20?C. Most salts in the solution appeared to enhance the reaction in the first half hour but overall they displayed an inhibitory effect. Combined ions showed a similar effect as individual salts.Jianjun Wei Yajing Qian Wenjuan Liu Lutao Wang Yijie Ge Jianghao Zhang Jiang Yu Xingmao Ma 2014Journal of Environmental Sciences2014,26,5:9
2DGGE analysis of 16S rDNA of ammonia-oxidizing bacteria in chemical–biological flocculation and chemical coagulation systems显示文摘Siqing Xia Yan Shi Yigang Fu Xingmao Ma 2005Applied Microbiology and Biotechnology2005,,1:1
3Phytotoxicity, accumulation and transport of silver nanoparticles by Arabidopsis thaliana显示文摘Jane Geisler-Lee Qiang Wang Ying Yao Wen Zhang Matt Geisler Kungang Li Ying Huang Yongsheng Chen Andrei Kolmakov Xingmao Ma 2012Nanotoxicology2012,,3:1
4Interactions between engineered nanoparticles (ENPs) and plants: Phytotoxicity, uptake and accumulation显示文摘Xingmao Ma Jane Geiser-Lee Yang Deng Andrei Kolmakov 2010Science of the Total Environment2010,,16:1
5Carbon Nanotube-Textured Sand for Controlling Bioavailability of Contaminated Sediments显示文摘Sand particles textured with multi-walled carbon nanotubes (MWCNTs) can efficiently control the mobility and bioavailability of contaminants found in aquatic sediments. Adsorption measurements for a wide variety of aquatic contaminants (chlorinated hydrocarbons) on MWCNT-textured sand showed orders of magnitude increase in their sorption coefficients compared to traditional materials (sand) when used for physically separating contaminated sediments from overlying water. Molecular dynamics simulations performed on model experimental systems emphasize that the hydrophobic interactions of the MWCNT surfaces play a crucial role in driving the water molecules away, promoting such enhanced contaminant uptake. The MWCNT-textured sand significantly reduced the migration of contaminants from sediments to overlying water and possesses suitable parameters needed for contaminant sequestration and sediment remediation technologies. The single step and scalable procedure described here for synthesizing robust MWCNT-textured sand surfaces will provide important improvements in the field of remediation/aquatic environment restoration technologies.Xingmao Ma Deepti Anand Xianfeng Zhang Mesfin Tsige Saikat Talapatra 2010Nano Research2010,3,6:0
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