Pd金属胶体的制备  

Preparation of Palladium Colloids

作　　者：刘漫红[1] 高飞鹏[1] 刘金强[2] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042 [2]南京理工大学材料科学与工程系,江苏南京210094

出　　处：《青岛科技大学学报（自然科学版）》2008年第4期302-304,共3页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省优秀中青年奖励基金(2005BS11009);教育部"新世纪优秀人才支持计划"(NCET-05-0098)

摘　　要：以聚乙烯吡咯烷酮(PVP)为保护剂,以甲醇为还原剂,甲醇和水为混合溶剂,制备了一系列高分子稳定的Pd金属胶体(PVP-Pd),并进行了表征。结果表明,随着甲醇用量的增大,制得的PVP-Pd胶体颗粒粒径增大,胶体粒径4.1 nm^7.0 nm,粒径分布0.81 nm^1.64 nm;V(醇)∶V(水)=1∶1时的胶体粒径小、分散度好、颗粒分布比较均匀;而V(醇∶)∶V(水)为3∶7、7∶3、9∶1时的胶体粒径大小不均、分布较差,出现了团聚现象。Poly（N-vinyl-2-pyrrolidone）-stabilized palladium colloids （PVP-Pd） were prepared by reducing H2PdCl4 · nH2O in methanol and water mixed solvents. The metal colloids were characterized by TEM. It was observed that the diameter of PVP-Pd nanoparticles increased with the increasing of the volume ratio of methanol-water. The mean diameters of the prepared Pd nanoparticles ranged from 4.1 nm to 7.0 nm, and standard deviations ranged from 0.81 nm to 1.64 nm. PVP-Pd with smaller size and narrow size distribution was obtained when V（CH3OH） ：V（H20） was 1 ： 1. The different particles with wide size distribution of PVP-Pd could be obtained when V （CH3 OH） ： V（H2O） were 3 ： 7, 7 ： 3 or 9 ： 1, and at the same time the particles apparently began to aggregate.

关 键 词：聚乙烯吡咯烷酮 Pd金属胶体 制备 

分 类 号：O614.82[理学—无机化学] O643.36[理学—化学]