| Au/Al2O3催化剂的UV-Vis谱研究 |
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| 引用本文： | 陈葳,肖益鸿,詹瑛瑛,蔡国辉,魏可镁,郑起.Au/Al2O3催化剂的UV-Vis谱研究[J].光谱学与光谱分析,2004,24(9):1096-1098. |
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| 作者姓名： | 陈葳 肖益鸿 詹瑛瑛 蔡国辉 魏可镁 郑起 |
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| 作者单位： | 福州大学化肥催化剂国家工程研究中心,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金 (2 0 2 71 0 1 2 )，福建省科技计划项目 (2 0 0 2H0 2 6)资助 |
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| 摘 要： | 研究了十六烷基三甲基溴化铵 (CTAB) /正己醇 /水体系的W/O微乳体系中 ,几种主要实验参数对用NaBH4还原氯金酸溶液制得的金纳米粒子大小的影响。实验结果表明 :微乳体系中水与表面活性剂的摩尔比rw 在所研究的范围内对金粒子大小影响不大 ,而氯金酸溶液的浓度对金粒子大小影响较大。通过优化制备条件 ,用两种不同的方法制备了Au/Al2 O3 催化剂 ,并用紫外 可见光谱、透射电镜 (TEM)和X射线衍射(XRD)对其进行表征 ,初步考察了不同制备方法对催化剂中活性组分Au粒大小的影响
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| 关 键 词： | 微乳液 Au粒大小 UV-Vis谱 Au/Al2O3催化剂 |
| 文章编号： | 1000-0593(2004)09-1096-03 |
| 修稿时间： | 2002年10月28 |
Study on the Ultraviolet-Visible Spectra of Au/Al2O3 Catalysts |
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| Wei Chen,Yi-hong Xiao,Ying-ying Zhan,Guo-hui Cai,Ke-mei Wei,Qi Zheng.Study on the Ultraviolet-Visible Spectra of Au/Al2O3 Catalysts[J].Spectroscopy and Spectral Analysis,2004,24(9):1096-1098. |
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| Authors: | Wei Chen Yi-hong Xiao Ying-ying Zhan Guo-hui Cai Ke-mei Wei Qi Zheng |
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| Institution: | National Engineering Research Center of Chemical Fertilizer Catalyst at Fuzhou University, Fuzhou 350002, China. |
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| Abstract: | A variety of synthesis parameters for the preparation of gold nanoparticles by NaBH 4 solution reduction in the W/O microemulsion media consisting of Cetyl Trimethyl Ammonium Bromide(CTAB)/n-hexanol/water system was investigated. The results showed that the molar ratio of water to surfactant (r w) had nothing to do with the gold particle size, but the concentration of the aqueous gold salt solution had a significant effect on the size of gold particle. Through optimizing the preparation parameters, Au/Al 2O 3 catalysts were prepared with two different methods, then the catalysts were characterized by ultraviolet-visible spectra, XRD and TEM, and the effect of two different preparation methods on active component gold particle size in the catalysts was studied. |
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| Keywords: | Microemulsion Size of gold particle Ultraviolet-visible spectra Au/Al 2O 3 catalysts |
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