| 周兴赟,李文绮,李文,苏丽,周振宁,张海军,张少伟,鲁礼林,李发亮.化学通报,2015,78(3):237-241. |
| Pt/Cu双金属纳米颗粒的制备及其催化制氢活性 |
| Preparation and catalytic activity of Pt/Cu bimetallic nanoparticles for hydrogen generation from the hydrolysis of alkaline NaBH4 solution |
| 投稿时间：2014-05-07 修订日期：2014-06-24 |
| DOI： |
| 中文关键词: Pt/Cu 双金属纳米颗粒 NaBH4 催化活性 |
| 英文关键词:Pt/Cu Bimetallic Nanoparticles NaBH4 Catalytic Activity |
| 基金项目:国家自然科学基金项目(51272188)、湖北省自然科学基金重点项目(2013CFA086)、和湖北省科技支撑计划对外科技合作项目(2013BHE002)资助 |
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| 中文摘要: |
| 采用化学共还原法合成了聚乙烯吡咯烷酮(PVP)保护的Pt/Cu双金属纳米颗粒,并采用紫外可见吸收光谱(UV-vis)、透射电子显微镜(TEM)等手段对所合成的Pt/Cu双金属纳米颗粒进行了表征。研究了化学组成对Pt/Cu双金属纳米颗粒催化NaBH4水解制氢性能的影响。结果表明,所制备的Pt/Cu双金属纳米颗粒平均粒径为1.8-2.3 nm,其催化活性远高于单金属Pt和Cu纳米颗粒的活性,其中Pt90Cu10双金属纳米颗粒催化活性最高,其在30℃的条件下,催化NaBH4制氢的活性可达7300 mol-H2.mol-催化剂-1.h-1,约为相同粒径的Pt单金属纳米颗粒的两倍。 |
| 英文摘要: |
| PVP-protected Pt/Cu bimetallic nanoparticles (BNPs) were prepared by using a chemical reduction method. The obtained BNPs were characterized by Ultraviolet-visible spectrophotometry (UV–Vis) and transmission electron microscopy (TEM). The influence of composition of catalyst on the catalytic activity for hydrogen generation from NaBH4 is also investigated. The results indicated that the prepared Pt/Cu BNPs had an average size of 1.8-2.3 nm. The activities of BNPs were much higher than that of Pt and Cu monometallic nanoparticles (MNPs). Among all the MNPs and BNPs, Pt/Cu BNPs with atomic ratio of 90/10 displayed the highest catalytic activity, showing a high hydrogen release rate of 7300 mol-H2.h-1.mol-Pt-1 at 30℃,which value is approximately twice of Pt monometallic nanoparticles under the same conditions. |
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