| 纳米银的电解质效应 |
| Effects of Electrolytes on Microstructure and Absorption Property of Silver Nanoparticles |
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| 摘要: 向2种不同电性的纳米银溶胶中分别加入KCl、KBr、KI、KNO3、Mg(NO3)2、Al(NO3)3、K2CO3、K2SO4、KOH和HNO3电解质溶液，利用透射电子显微镜、紫外-可见分光光度计等研究电解质对纳米银的显微结构和光谱学性质的影响。结果表明，不同电解质离子在纳米银胶体表面吸附程度以及导致纳米银胶体聚集和生长程度不同，从而对纳米银胶体的分散状态和表面电势产生不同影响。这种影响的结果导致其对相同电性纳米银粒子和不同电性纳米银粒子的显微结构和光谱学性质影响不同。 |
| 关键词: 纳米银 电解质 吸收光谱 聚集 |
| 基金项目: |
| Abstract: The effects of electrolytes, including KCl, KBr, KI, KNO3, Mg(NO3)2, Al(NO3)3, K2CO3, K2SO4, KOH and HNO3 on microstructure and absorption property of the silver colloids were investigated by transmission electron microscopy and UV-Visible spectroscopy. The results indicate that the effect of the electrolyte ion on the surface silver nanoparticles adsorption capacity and the formation of large particles and aggregates in the solution is different, so the influence on the dispersion of silver nanoparticles and the surface potential is also different. The results lead to the different effects on the microstructure and optical properties of silver nanoparticles with the same or different electrical properties. |
| Keywords: silver nanoparticle electrolyte absorption spectroscopy aggregates |
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| 王悦辉,沈建红,李娜静,金 帆,何 强.纳米银的电解质效应[J].无机化学学报,2011,27(8):1574-1580. |
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