In Situ Formation of Metal Oxide Nanocrystals Embedded in Laser-Induced Graphene

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• 作者：Ruquan Ye ; Zhiwei Peng ; Tuo Wang ; Yunong Xu ; Jibo Zhang ; Yilun Li ; Lizanne G. Nilewski ; Jian Lin ; James M. Tour
• 刊名：ACS Nano
• 出版年：2015
• 出版时间：September 22, 2015
• 年：2015
• 卷：9
• 期：9
• 页码：9244-9251
• 全文大小：705K
• ISSN：1936-086X

文摘

Hybrid materials incorporating the advantages of graphene and nanoparticles have been widely studied. Here we develop an improved cost-effective approach for preparation of porous graphene embedded with various types of nanoparticles. Direct laser scribing on metal-complex-containing polyimide film leads to in situ formation of nanoparticles embedded in porous graphene. These materials are highly active in electrochemical oxygen reduction reactions, converting O₂ into OH^{鈥?/sup>, with a low metal loading of less than 1 at. %. In addition, the nanoparticles can vary from metal oxide to metal dichalcogenides through lateral doping, making the composite active in other electrocatalytic reactions such as hydrogen evolution.}