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SmVO_4纳米粒子的制备及其可见光催化活性研究
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作者 付孝锦 李子黎 +4 位作者 由耀辉 康富彦 李琴 刘勇 郑小刚 《化工新型材料》 CAS CSCD 北大核心 2018年第12期81-84,共4页
以硝酸钐[Sm(NO_3)_3·6H_2O]和钒酸钠(Na_3VO_4)为原料,采用直接沉淀法在三乙醇胺-丙三醇-乙醇混合有机溶剂体系中制备钒酸钐(SmVO_4)纳米粒子,考察其对罗丹明B的可见光催化降解活性,并对其进行表征。研究结果表明:浓度均为0.05mo... 以硝酸钐[Sm(NO_3)_3·6H_2O]和钒酸钠(Na_3VO_4)为原料,采用直接沉淀法在三乙醇胺-丙三醇-乙醇混合有机溶剂体系中制备钒酸钐(SmVO_4)纳米粒子,考察其对罗丹明B的可见光催化降解活性,并对其进行表征。研究结果表明:浓度均为0.05mol/L的Sm(NO_3)_3·6H_2O和Na_3VO_4溶液在三乙醇胺、丙三醇和乙醇体积配合比为1∶1∶3的溶液体系中反应3.0h获得分散性好、平均粒径约100nm、比表面积103.4m^2/g的SmVO4纳米粒子,SmVO_4纳米粒子对罗丹明B的降解率达到58.7%,具有较好的光催化活性。 展开更多
关键词 SmVO4纳米粒子 有机溶剂 罗丹明B 光催化活性
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Research progress on rolling superlubricity in solid lubricants
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作者 LI PanPan LI HongXuan +8 位作者 ZHU DongXiang ZHU YongQi kang fuyan WANG Wan ZHANG YaXin LIU XiaoHong JI Li ZHOU HuiDi CHEN JianMin 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2024年第7期1980-1990,共11页
Superlubricity is an ideal lubrication state where friction nearly vanishes between contact interfaces. It has become one of the most important research topics and approaches owing to its significance in reducing ener... Superlubricity is an ideal lubrication state where friction nearly vanishes between contact interfaces. It has become one of the most important research topics and approaches owing to its significance in reducing energy consumption and preventing device failures. As an efficient and universal lubricating principle capable of achieving superlubricity, rolling lubrication has attracted widespread attention in recent years. In this review, the theoretical concept of rolling lubrication and the experimental research progress of spherical/scroll structures are summarized. The review focuses on the possibility of achieving rolling lubrication using spherical/scroll structures(such as spherical fullerenes, carbon nanotubes, and formed and constructed spherical/scroll structures). The challenges in achieving rolling lubrication are summarized, and the possibility of molecular rolling lubrication,as well as its potential applications in superlubrication, are discussed. 展开更多
关键词 spherical/scroll structure rolling lubrication SUPERLUBRICITY FULLERENE
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