conference

2012/06/13 Speaker:Prof. Chia-Liang Sun Topic:Graphene-based Nanocomposite Materials for Energy and Biosensor Applications

date:2012-05-08

announcer:Wen-chi Lin

SpeakerProf. Chia-Liang Sun

TopicGraphene-based Nanocomposite Materials for Energy and Biosensor Applications

Date6/13 15:30~17:20

Location: 博雅101

Chairman: Prof. K.C. Ho


Graphene-based Nanocomposite Materials for Energy and Biosensor Applications

Chia-Liang Sun 1,*

1Department of Chemical and Materials Engineering, Chang Gung University, Kwei-Shan, Tao-Yuan, 333 Taiwan

Keywords: graphene, graphene nanoribbon, carbon nanotube, nanoparticle, electrochemical biosensor

 

Abstract

In the first part of this presentation, my early works related to fuel cells will be presented. In the second part of this presentation, graphene oxide nanoribbons (GONRs) were synthesized from the facile unzipping of multiwalled carbon nanotubes (MWCNTs) with the help of microwave energy. (C.L. Sun et al., ACS Nano 5 (2011) 7788.) A core-shell MWCNT/GONR-modified glassy carbon (MWCNT/GONR/GC) electrode was used to electrochemically detect ascorbic acid (AA), dopamine (DA) and uric acid (UA). In cyclic voltammograms, the MWCNT/GONR/GC electrode was found to outperform the MWCNT- and graphene-modified GC electrodes in terms of peak current. This excellent electrochemical performance can be attributed to the unique electronic structure of MWCNTs/GONRs: a high density of unoccupied electronic states above the Fermi level and enriched oxygen-based functionality at the edge of the graphene-like structures, as revealed by X-ray absorption near-edge structure spectroscopy, obtained using scanning transmission X-ray microscopy. Also, a graphene/Pt-modified GC electrode was created to simultaneously characterize AA, DA, and UA levels via cyclic voltammetry (CV) and differential pulse voltammetry (DPV). (C.L. Sun et al., Biosens. Bioelectron. 26 (2011) 3450.) During the preparation of the nanocomposite, size-selected Pt nanoparticles with a mean diameter of 1.7 nm were self-assembled onto the graphene surface. In comparison to the CV results of bare GC and graphene-modified GC electrodes, the large electrochemical potential difference that is achieved via the use of the graphene/Pt nanocomposites is essential to the distinguishing of these three analytes. In addition, more recent results related to electrochemical and biomedical applications of graphene-based nanomaterials will be discussed as the last part of this presentation.

 

Chia-Liang SUN (孫嘉良; SunCL)

Curriculum Vitae

Assistant Professor

Dept. of Chemical and Materials Eng., Chang Gung University

        E-mail (1): sunchialiang@gmail.com

        E-mail (2): clsun@mail.cgu.edu.tw

My URLs: (1)http://ce.cgu.edu.tw/files/11-1048-2755.php

                (2)http://www.researcherid.com/rid/A-4206-2011

                (3)http://www.linkedin.com/pub/chia-liang-sun/1a/539/476

                (4)http://www.suncl.idv.tw/

 

Education

Ph.D., Materials Science and Engineering                                                  1998-2002

        National Chiao-Tung University, Taiwan

        Thesis Supervisor: Professor San-Yuan Chen (陳三元 教授, MSE Dept.)

        Co-supervisor: Professor Albert Chin (荊鳳德 教授, EE Dept.; IEEE Fellow)

B.Eng., Materials Science and Engineering                                                1994-1998

        National Tsing-Hua University, Taiwan

PROFESSIONAL EXPERIENCE

Assistant Professor,

Dept. of Chemical and Materials Eng.                     2008-present

Chang Gung University, Taiwan

 

Physical Science Research Associate,

Synchrotron Radiation Laboratory, SLAC                               2008

Stanford University, USA

Research Advisor: Dr. Anders Nilsson

 

Postdoctoral Fellow,   

Institute of Atomic and Molecular Science                         2003-2008

(Military Service)          Academia Sinica, Taiwan

                                Research Advisors: Drs. Kuei-Hsien Chen (陳貴賢 教授)
                                & Li-Chyong Chen (
林麗瓊 教授 at CCMS, NTU; MRS Fellow)

 

Visiting Scholar,

Institute for Chemical Processing and Environmental Technology 2006

                                National Research Council, Canada

                                Research Advisors: Drs. Barry MacDougall & Christina Bock
(Dr. Barry MacDougall was the former president of the Electrochemical Society (ECS).)

 

Expertise Areas AND Major contribution

 

- Synthesis and integration of sp2-nanocarbon materials (carbon nanotube, graphene, graphene nanoribbons … etc.) for electrochemical biosensor applications (2011 B&B, ACS Nano)

 

- Synthesis and integration of sp2-nanocarbon supports with the decoration of size-selected
nanoparticles for energy conversion and storage applications (fuel cell, Li-ion battery
… etc.) (
2009 JES, 2007 Electrochem. Commun.; 2006 ESSL x 2, JVSTB; 2005 Chem. Mater.
 (Highly Cited Papers, No. 380 for Taiwan)
)

 

- Visualization for in-depth understanding of atomic-scale and electronic structures of
novel materials with the help of both calculations and experimental characterizations
 (
2011 J. Mater. Chem.; 2010 JPCC; 2006 JACS)

 

PUBLICATIONS

 

(A) Selected Journal Papers

1. C. L. Sun, S. Y. Chen*, S. B. Chen, and A. Chin, “Effect of annealing temperature on physical and electrical properties of Bi3.25La0.75Ti3O12 thin films on Al2O3 buffered Si,” Appl. Phys. Lett. 80, 1984 (2002). (NSC88-2218-009-011 and NSC90-2215-E-009-061) (IF = 3.820, N/M = 14/116 - Physics, Applied, Total Cites: 38) DOI: 10.1063/1.1459115  

 

2. C. L. Sun, L. C. Chen*, M. C. Su, L. S. Hong, O. Chyan, C. Y. Hsu, K. H. Chen, T. F. Chang, and L. Chang, “Ultrafine platinum nanoparticles uniformly dispersed on arrayed CNx nanotubes with high electrochemical activity,” Chem. Mater. 17, 3749 (2005). Citation > 100, (IF = 6.397, N/M = 14/222 = 5.4% - Materials Science, Multidisciplinary, Total Cites: 102) DOI: 10.1021/cm050107r

 

3. C. L. Sun, H. W. Wang, M. Hayashi*, L. C. Chen, and K. H. Chen*, “Atomic-scale deformation in N-doped carbon nanotubes,” J. Am. Chem. Soc. 128 (26), 8368 (2006). (IF = 9.019, N/M = 11/144 = 7.6% - Chemistry, Multidisciplinary, Total Cites: 31) DOI: 10.1021/ja0587852

 

4. C. L. Sun*, H. H. Lee, J. M. Yang and C. C. Wu, “The Simultaneous Electrochemical Detection of Ascorbic Acid, Dopamine, and Uric Acid Using Graphene/Size-selected Pt Nanocomposites,” Biosens. Bioelectron. 26, 3450 (2011). (IF = 5.361, N/M = 1/26 = 3.8% – Electrochemistry, Total Cites: 0) DOI: 10.1016/j.bios.2011.01.023

 

5. C. L. Sun*, C. T. Chang, H. H. Lee, J. Zhou, J. Wang, T. K. Sham, W. F. Pong, “Microwave-Assisted Synthesis of a Core–Shell MWCNT/GONR Heterostructure for the Electrochemical Detection of Ascorbic Acid, Dopamine, and Uric Acid” ACS Nano 5, 7788 (2011). (IF = 9.855, N/M = 9/222 = 4.1% –Materials Science, Multidisciplinary, Total Cites: 0) DOI: 10.1021/nn2015908