摘要
以硼氢化钠为还原剂通过共还原金属离子,制备了吸附于纤维素纳米晶体表面的Ag/Pd合金纳米粒子。纤维素纳米晶体起到了分散剂的作用,使制备的合金纳米粒子在溶液中具有良好的分散性和稳定性。使用紫外可见分光光度计(UV)和透射电子显微镜(TEM)对Ag/Pd合金的悬浮液进行了检测,用X射线衍射(XRD)对干燥的纤维素与合金的复合物进行了表征。研究表明制备的纳米粒子粒径均小于5.5 nm,粒径随着Pd物质的量的增加而增大。
Uniform Ag/Pd alloy nanoparticles absorbed on the surface of cellulose nanocrystal （CNC） were prepared by chemical reduction of metallic cations using NaBH4. CNC played a role of a dispersant to obtain stable dispersions of alloy nanoparticles. Aqueous suspensions of Ag/Pd alloy nanoparticles was detected by UV-vis spectroscopy and transmission electron microscopy （TEM）, and the dried nanocomposites was characterized by X-ray diffraction （XRD）. The average sizes of alloy nanoparticles were below 5.5 nm and their average diameter was increased with an increase of Pd content.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第B10期87-90,96,共5页
Chemistry and Industry of Forest Products
基金
中央级公益性科研院所基本科研业务费专项资金资助(CAFYBB2007030)
国家863计划资助(2007AA10074)
