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

Significance Statement

Collaboration between scientists from Rice and Missouri universities resulted in development of a unique form of graphene where metallic nanoparticles are embedded  which turn it an excellent catalyst for fuel cells. This metal oxide-laser induced graphene has the potential to replace more expensive catalytic metal such as platinum.

In Situ Formation Metal Oxide Nanocrystals Embedded Laser-Induced Graphene- renewable energy global innovations

Journal Reference

ACS Nano. 2015 Aug 18.

Ruquan Ye†, Zhiwei Peng†, Tuo Wang†, Yunong Xu⊥, Jibo Zhang†, Yilun Li†,Lizanne G. Nilewski†, Jian Lin§, and James M. Tour*†‡§
Department of Chemistry, Department of Computational and Applied Mathematics,Smalley Institute for Nanoscale Science and Technology, and §Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, Missouri 65211, United States.
Abstract
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, 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.

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