Pt nanoparticles immobilized in mesoporous silica-coated magnetic nanocapsules: A non-leaching catalyst for hydrogen generation from hydrolysis of ammonia borane

被引：24

作者：

Xu, Dan ^{[1
]}

Cui, Zhenkai ^{[1
]}

Yang, Jin ^{[1
]}

Yuan, Man ^{[1
]}

Cui, Xueliang ^{[1
]}

Zhang, Xiaoyun ^{[1
]}

Dong, Zhengping ^{[1
]}

机构：

[1] Lanzhou Univ, Zhongwei High Technol Res Inst, Gansu Prov Engn Lab Chem Catalysis,Minist Educ, Coll Chem & Chem Engn,Lab Special Funct Mat & Str, Lanzhou 730000, Gansu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 44期

关键词：

Pt nanoparticles; Hollow mesoporous silica-coated; magnetic nanocapsules; Hydrogen generation; Ammonia borane; PALLADIUM NANOPARTICLES; PD NANOPARTICLES; ENERGY CARRIER; CARBON; RU; DEHYDROGENATION; ADSORPTION; EVOLUTION; SPHERES; GROWTH;

D O I：

10.1016/j.ijhydene.2017.09.101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, novel hollow mesoporous silica-coated magnetic nanocapsule that immobilizing Pt nanoparticles (NPs) in its core (Fe(3)o(4)@Sio(2)@Pt@mSiO(2)) was successfully synthesized. The obtained catalyst was characterized by TEM, XRD, BET, VSM, ICP and N-2 adsorption-desorption. The Fe(3)o(4)@Sio(2)@Pt@mSio(2) catalyst was used in the catalytic hydrogen generation from hydrolysis of ammonia borane and showed superior catalytic activity. Moreover, the Fe(3)o(4) SiO2 Pt@mSiO(2) catalyst can be easily recovered by magnetic separation attributed to the supermagnetic Fe3O4 NPs imbedded in the inner core. It is worth mentioning that, due to the Pt NPs were immobilized in the core of the nanocapsules and covered with mesoporous silica shell, Pt NPs leaching was efficiently prevented during the catalytic process. Therefore, this work provided a helpful platform for the preparation of noble metal based nanostructured catalysts with excellent activity, accessibility, facile recovery and almost no noble metal leaching. (c) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：27034 / 27042

页数：9

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