微波法制备还原氧化石墨烯负载Pt3Co纳米合金

doi:10.1016/S1872-2067(14)60232-1

催化学报 ›› 2014, Vol. 35 ›› Issue (12): 2029-2037.DOI: 10.1016/S1872-2067(14)60232-1

微波法制备还原氧化石墨烯负载Pt₃Co纳米合金

石娟娟, 聂仁峰, 张梦媛, 赵梦思, 侯昭胤

浙江大学化学系催化所, 浙江杭州310028

收稿日期:2014-07-30 修回日期:2014-09-30 出版日期:2014-11-29 发布日期:2014-11-29
通讯作者: 侯昭胤
基金资助:
国家自然科学基金(21473155, 21273198, 21073159); 浙江省自然科学基金(L12B03001).

Microwave-assisted fast fabrication of a nanosized Pt₃Co alloy on reduced graphene oxides

Juanjuan Shi, Renfeng Nie, Mengyuan Zhang, Mengsi Zhao, Zhaoyin Hou

Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China

Received:2014-07-30 Revised:2014-09-30 Online:2014-11-29 Published:2014-11-29
Supported by:
This work was supported by the National Natural Science Foundation of China (21473155, 21273198, 21073159) and the Natural Science Foundation of Zhejiang Province (L12B03001).

摘要/Abstract

摘要：

微波辐射法可以在数分钟内将高度分散的 Pt₃Co 合金颗粒负载于还原氧化石墨烯表面上.表征结果发现, 与传统的溶剂热法和浸渍法相比,微波法制备的催化剂中贵金属的利用率高, 合金颗粒的分布均匀, 组成可控, 同时氧化石墨烯的再石墨化现象也得到有效地抑制.采用微波法制备的Pt₃Co/RGO-MW催化剂在肉桂醛加氢反应中具有较高的活性和和产物选择性. Pt₃Co/RGO-MW中每一个 Pt 原子在70 ℃的转化频率高达23.8 min^-1.

关键词: 石墨烯, Pt₃Co, 微波法, 肉桂醛, 加氢

Abstract:

Ultrafine and homogenously dispersed Pt₃Co alloy nanoparticles were fabricated on reduced graphene oxide (RGO) in a few minutes under microwave irradiation. Characterization results confirmed that microwave irradiation was important for higher metal utilization, the easy control of alloy composition, improved dispersion of the Pt₃Co particles and minimizing the re-graphitization of the parent RGO by comparison with conventional solvent-thermal and impregnation methods. This Pt₃Co/RGO-MW catalyst was extremely active and selective during the hydrogenation of cinnamaldehyde to cinnamyl alcohol. The calculated specific activity of each Pt atom in the Pt₃Co/RGO-MW at 70 ℃ was 23.8 min^-1.

Key words: graphene, Pt₃Co, microwave irradiation, cinnamaldehyde, hydrogenation

石娟娟, 聂仁峰, 张梦媛, 赵梦思, 侯昭胤. 微波法制备还原氧化石墨烯负载Pt₃Co纳米合金[J]. 催化学报, 2014, 35(12): 2029-2037.

Juanjuan Shi, Renfeng Nie, Mengyuan Zhang, Mengsi Zhao, Zhaoyin Hou. Microwave-assisted fast fabrication of a nanosized Pt₃Co alloy on reduced graphene oxides[J]. Chinese Journal of Catalysis, 2014, 35(12): 2029-2037.

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微波法制备还原氧化石墨烯负载Pt₃Co纳米合金

Microwave-assisted fast fabrication of a nanosized Pt₃Co alloy on reduced graphene oxides

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