文献类型：期刊文献

中文题名：银粉的辐射清洁制备

英文题名：Environmentally friendly preparation of silver powder via irradiation

作者：梁蒙蒙[1];梁莹[1];方斌[1]

机构：[1]华东理工大学核技术应用研究所,上海200237

年份：2017

卷号：35

期号：3

起止页码：34

中文期刊名：辐射研究与辐射工艺学报

外文期刊名：Journal of Radiation Research and Radiation Processing

收录：CSTPCD;;Scopus;CSCD:【CSCD2017_2018】；

基金：上海市教育委员会科研创新项目(14ZZ057)~~

语种：中文

中文关键词：辐射;银粉;形貌

外文关键词：Radiation, Sliver powders, Morphology

摘要：采用辐射还原法制备纯净的银粉,期待通过改变反应条件制备出不同形貌的银粉,以满足实际应用中的各种要求。在常温常压氮气环境下,以草酸银为银源,水为介质,利用电子加速器辐照的方法制备银粉。通过扫描电镜和X射线衍射仪对银粉进行表征。结果表明,改变反应体系的pH值、吸收剂量和结构诱导剂的种类,可以制备出颗粒状、棒状、片状等不同形貌的银粉。在吸收剂量4 MGy、pH=6时,以CS005或CSH100为诱导剂,能得到长5~10mm,直径约2mm的棒状纯净银粉;以CS005和BTA为诱导剂,得到四边形的片状银粉;以CSH100和PEO200为诱导剂,得到三角形和多边形混杂的片状银粉。在总剂量4MGy、pH=9时,以CS005为诱导剂,得到粒径约20 nm的类球形纳米银粉;以CSH100为诱导剂,得到粒径约100 nm的片状混杂银粉。在总剂量8 MGy、pH=9时,以CS005或CSH100为诱导剂,得到粒径约100 nm的片状混杂银粉。
Silver particles were successfully synthesized by irradiating silver oxalate in deionized water under a nitrogen atmosphere by using the electron accelerator and by changing the pH value, absorbed dose, and structure inducer. Further, the silver powders with different particle morphologies （e.g., granular, rod-like, and lamellar-shaped particles） were investigated by field-emission scanning electron microscopy and X-ray diffraction analysis. Under the condition of an absorbed dose of 4 MGy and pH = 6, silver powder composed of rod-like particles with diameters of about 2 μm and lengths of 5-10 μm were obtained with the organic amine compound induction of CS005 or CSH100. Further, silver powder composed of quadrilateral flaky particles was obtained with the coexisted of CS005 and BTA, and silver powder composed of a mixture of triangular and polygonal lamellar particles was obtained with the synergistic induction of CSH100 and PEO200. Under the condition of an absorbed dose of 4 MGy and pH = 9,spherical silver nanoparticles with diameters of about 20 nm could be obtained with the CS005 and lamellar mixed silver particles with diameters of about 100 nm were synthesized with the CSH100. Under the condition of an absorbed dose of 8 MGy and pH = 9, lamellar mixed silver particles with diameters of about 100 nm were obtained with the CS005 or CSH100.