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AA-MA-HEMA阻垢剂的阻垢性能研究 被引量:5
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作者 余嵘 马志祥 +3 位作者 周欣桐 苏玲莉 张桐 李仲华 《当代化工》 CAS 2018年第5期897-902,共6页
以水为溶液,用过硫酸铵为引发剂合成AA-MA-HEMA共聚物阻垢剂。经过实验共聚物对碳酸钙、硫酸钙、硫酸钡、硫酸锶垢的阻垢性能。该研究表明,共聚物较PASP及PAA,对碳酸钙、硫酸钙、硫酸钡、硫酸锶垢的阻垢性能较好,能够适应水质较复杂的... 以水为溶液,用过硫酸铵为引发剂合成AA-MA-HEMA共聚物阻垢剂。经过实验共聚物对碳酸钙、硫酸钙、硫酸钡、硫酸锶垢的阻垢性能。该研究表明,共聚物较PASP及PAA,对碳酸钙、硫酸钙、硫酸钡、硫酸锶垢的阻垢性能较好,能够适应水质较复杂的水质环境中;通过氧化分散铁表明了共聚物具有较佳的氧化分散铁能力,能够用于铁质循环系统中;通过钙容忍度实验表明了共聚物具有较强的钙容忍度,钙离子浓度再较高的条件下,共聚物也能较好的发挥其阻垢性能;通过扫描电镜对共聚物对不同垢体的阻垢性能的变化进行了分析研究。同时对共聚物的生物降解性进行了研究,研究表明共聚物的生物降解性能较好,属于易降解的高分子共聚物。 展开更多
关键词 共聚物 阻垢性能 氧化分散铁 钙容忍度 降解性能
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Preparation of carbon-coated iron oxide nanoparticles dispersed on graphene sheets and applications as advanced anode materials for lithium-ion batteries 被引量:10
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作者 Huilong Fei Zhiwei Peng +5 位作者 Lei Li Yang Yang Wei Lu Errol L. G. Samuel Xiujun Fan James M. Tour 《Nano Research》 SCIE EI CAS CSCD 2014年第4期502-510,共9页
We report a novel chemical vapor deposition (CVD) based strategy to synthesize carbon-coated Fe203 nanoparticles dispersed on graphene sheets (Fe2Og@C@G). Graphene sheets with high surface area and aspect ratio ar... We report a novel chemical vapor deposition (CVD) based strategy to synthesize carbon-coated Fe203 nanoparticles dispersed on graphene sheets (Fe2Og@C@G). Graphene sheets with high surface area and aspect ratio are chosen as space restrictor to prevent the sintering and aggregation of nanoparticles during high temperature treatments (800 ℃). In the resulting nanocomposite, each individual Fe2O3 nanoparticle (5 to 20 nm in diameter) is uniformly coated with a continuous and thin (two to five layers) graphitic carbon shell. Further, the core-shell nanoparticles are evenly distributed on graphene sheets. When used as anode materials for lithium ion batteries, the conductive-additive-free Fe2OB@C@G electrode shows outstanding Li+ storage properties with large reversible specific capacity (864 mAh/g after 100 cycles), excellent cyclic stability (120% retention after 100 cycles at 100 mA/g), high Coulombic efficiency (-99%), and good rate capability. 展开更多
关键词 Fe2O3 nanoparticles carbon coating graphene chemical vapor deposition(CVD) anode lithium ion batteries
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