| 银原子修饰铂纳米粒子的制备与其催化活性的研究 |
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| 引用本文： | 王莹,王华. 银原子修饰铂纳米粒子的制备与其催化活性的研究[J]. 精细与专用化学品, 2010, 0(10): 27-30 |
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| 作者姓名： | 王莹 王华 |
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| 作者单位： | 1. 江苏畜牧兽医职业技术学院药学院,江苏,泰州,225300
2. 南京理工大学泰州科技学院化工学院,江苏,泰州,225300 |
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| 摘 要： | 以聚乙烯吡咯烷酮（PVP）为保护剂在水溶液中合成了铂（Pt）纳米粒子,利用吸附在Pt纳米粒子表面上的氢还原适量AgNO_3,得到表面修饰了Ag原子的纳米Pt催化剂,并利用苯甲醛的催化加氢反应,考察了Ag原子的修饰量对纳米Pt催化剂的活性影响。实验结果表明：随着Ag原子在Pt纳米粒子表面沉积数量的增加,苯甲醛的转化率先升高后降低,当n（Ag）：n（Pt）为0.005时,纳米Pt催化剂的催化活性最高。
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| 关 键 词： | Ag原子 纳米Pt 表面修饰 催化加氢 |
Study on preparation and its catalytic activity of Pt nanoparticles modified by Ag atoms |
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| WANG Ying,WANG Hua. Study on preparation and its catalytic activity of Pt nanoparticles modified by Ag atoms[J]. Fine and Specialty Chemicals, 2010, 0(10): 27-30 |
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| Authors: | WANG Ying WANG Hua |
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| Affiliation: | 1.Department of Pharmacy,Jiangsu Animal Husbandry and Veterinary Science College,Taizhou 225300,China; 2.Department of Chemistry,Nanjing University of Science and Technology Taizhou Institute,Taizhou 225300,China) |
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| Abstract: | Pt nanoparticles were prepared in water solution by protection of PVP,under an atmospheric pressure of H_2,Pt nanoparticles surface modified by Ag atoms were prepared by reducing of AgNO_3 with hydrogen absorbed on Pt nanoparticles,the effect of the amount of Ag atoms on Pt nanoparticles catalytic activities were tested by the hydrogenation of benzaldehyde.The results showed that Ag atoms were formed on the surface of the Pt nanoparticles,and with the increase of the amount of Ag atoms,the conversion of the hydrogenation of benzaldehydes increased gradually and then decreased,Pt nanoparticles modified by Ag atoms have the highest catalytic activities when n（Ag）：n（Pt） was 0.005. |
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| Keywords: | Ag atoms Pt nanoparticles surface modification catalytic hydrogenation |
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