Chi, Qijin

Ulstrup, Jens

Zhang, Minwei

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Nov 08, 2017One-step Facile Functionalization of Graphene for Highly Active ElectrocatalysisZhang, Minwei; Ulstrup, Jens; Chi, QijinPublication date:2015Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Zhang, M., Ulstrup, J., & Chi, Q. (2015). One-step Facile Functionalization of Graphene for Highly ActiveElectrocatalysis. Abstract from XXIII International Symposium on Bioelectrochemistry and Bioenergetics, Malmö,Sweden.One-step Facile Functionalization of Graphene for Highly Active Electrocatalysis  Minwei Zhang, Jens. Ulstrup and Qijin Chi* Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark cq@kemi.dtu.dk  Prussian blue (PB) as a non-enzymatic catalyst, has been widely used in chemical and biological sensor function1. Graphene-based materials have captured great interest among physicists, chemists and materials scientists. Graphene is a two-dimensional (2-D) sheet of carbon atoms in a hexagonal configuration with atoms bonded by sp2 bonds. This unique nanostructure holds great promise for potential applications in technological fields such as nanoelectronics, sensors, nanocomposites and capacitors2. In the present work, we reportfabrication of high-quality PB nanocube/graphene hybrid materials using K4[Fe(CN)6] as the sole iron source for both reduction and functionalization of GO in one step. The hybrid material was characterized by Uv-vis, XRD and Raman spectroscopy, SEM, TEM and electrochemistry, PB nanocubes can be prepared by this method due to the slow crystal growth process. High-quality PB nanocubes display a low zeolite water content and a small number of [Fe(CN)6] vacancies in the crystal framework. This results in impressive electrochemical performance and high conductivity. High-quality PB nanocubes are easily combined with graphene into stable and highly uniform distribution by chemical bonding and were found to display high performance in  electrocatalytic reduction of H2O2.  Acknowledgments  This project supported by the Danish Research Council for Technology and Production Science (Project No. 12-127447).  Reference 1. N. Zhu, S. Han, S. Gan, J. Ulstrup and Q. Chi, Adv Funct Mater, 2013, 23, 5297-5306. 2. A. Ambrosi, C. K. Chua, A. Bonanni and M. Pumera, Chemical reviews, 2014, 114, 7150-7188.      

One-step Facile Functionalization of Graphene for Highly Active Electrocatalysis

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One-step Facile Functionalization of Graphene for Highly Active Electrocatalysis

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