采用均匀沉淀和高温热分解相结合的方法制备了纳米银粉体,分析了纳米银粉体形成机理,研究了初始浓度、烧结温度和时间对纳米银粉体粒径和形貌的影响;采用X射线衍射仪、扫描电子显微镜表征了纳米银粉体结构、组成、大小和形貌。结果表明,硝酸银初始浓度0.05 mol/L、烧结温度300℃、烧结2 h,以尿素为pH控制剂,不添加任何其他分散剂条件下可得到分散性好、颗粒均匀,粒径50 nm的球形粉体。
Uniform dispersion silver nano-powders were prepared by a evenly precipitation combining with thermal decomposition process. The formation mechanism of silver nano-powder was investigated. Effects of the initial concentration of silver nitrate ( AgNO3 ) , the temperature and time of calcination on the size and morphology of the nanometer silver power were studied. The structure, composition, size and morphology of silver nanopower were characterized by X-ray diffraction and scanning electron microscopy. Results show that the silver powders with an average size of 50 nm and uniformly spherical shape particles are obtained by calcining at 300 ℃ for 2 h when the initial concentration of AgNO3 is 0.05 mol/L.
参考文献
| [1] | Lee H;Jeong S .Bacteriostasis and skin Inoxiousness of nanosize silver coiloidson textile fabrics[J].Textile Research Journal,2005,75(07):551-556. |
| [2] | Panigrahi S;Prahara J S;Basu S et al.Self-assembly of silver nanoparlicles:Synthesis,stabilization,optical properties,and application in surface-enhanced raman scattering[J].Journal of Physical Chemistry B,2006,110(27):13436-13444. |
| [3] | 陈水挟,罗颖,许瑞梅,曾汉民.银型抗菌活性碳纤维的结构及其抗菌性能的研究[J].材料科学与工程,2001(04):66-70,79. |
| [4] | 张吴然;李清彪;孙道华 等.纳米银颗粒的制备方法[J].贵金属,2005,26(02):51-56. |
| [5] | J.L.H. Chau;M.-K. Hsu;C.-C. Hsieh .Microwave plasma synthesis of silver nanopowders[J].Materials Letters,2005(8/9):905-908. |
| [6] | 张吴然;李清彪;孙道华 等.纳米银颗粒的制备方法[J].贵金属,2005,26(02):51-56. |
| [7] | 李贵安,邓仲勋,焦飞,张亚娟,朱庭良.Ag/SiO_2复合颗粒的溶胶-凝胶法制备与表征[J].硅酸盐通报,2010(01):17-20,25. |
| [8] | Guo Gui-quan;Gan Wei-ping;Luo Jia et al.Preparation and dispersive mechanism of highly dispersive uhrafine silver powder[J].Applied Surface Science,2010,256:6683-6687. |
| [9] | 廖立,熊继,谢克难.液相还原法制备纳米银粉的研究[J].稀有金属材料与工程,2004(05):558-560. |
| [10] | 杨胜科,费晓华,杜双田,赵有林,蒋丽娟.光化学制备纳米银溶胶及其灭菌性能表征[J].功能材料,2004(z1):2383-2385. |
| [11] | 廖学红,朱俊杰,邱晓峰,赵小宁,陈洪渊.类球形和树枝状纳米银的超声电化学制备[J].南京大学学报(自然科学版),2002(01):119-123. |
| [12] | 洪露薇,王惠璇,林文爽,杨欣,李清彪.毕赤酵母提取液还原制备银纳米颗粒[J].化学反应工程与工艺,2009(04):334-338. |
| [13] | 潘国光;赵正大;刘传说.化学反应式手册上[M].沈阳:辽宁人民出版社,1984:5-130. |
| [14] | 成萍;赖欣;李艳红 等.pH值和烧结条件对溶胶-凝胶合成LiMn204粉体晶相结构和形貌的影响[J].四川师范大学学报:自然科学学报,2010,33(06):811-815. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%