Associate Professor CHIN Wee Shong

(Director – Chemical, Molecular, and Materials Analysis Centre)



B.Sc. (Hons), National University of Singapore, 1987; Ph.D. National University of Singapore, 1993.

Contact Information

Office: S8-02-05B
Tel: (65)-6516-8031 | Fax: (65)-6779-1691
Email: chmcws@nus.edu.sg


 

ORCID: 0000-0002-5406-4689
ResearcherID: H-9042-2013  

 

Recognition and Achievements

  • Faculty Teaching Excellence Award, Faculty of Science, NUS, 2007 & 2008
  • University Quality Service Award , NUS, 2005

 

Research Interests

Our research focuses on the fabrication and applications of nanostructures and their hybrids. We explore methodologies to synthesize size-, morphology- and phase-controllable nanomaterials, and to fabricate them into heterostructured or hybrid materials for specific applications. Current projects include synthesis of doped and layered oxide/hydroxide nanocomposites for energy, sensor and photocatalytic applications.

 

Research Highlight

Ref: Loh, P. Y.; Lee, K K.; Ng, Y.; Sow, C. H.; Chin, W. S., Co/Al Layered Double Hydroxides Nanostructures: A Binderless Electrode for Electrochemical Capacitor. Electrochem. Commun. 2014, 43, 9–12. 

We prepare Co/Al layered double hydroxides (LDH) nanoflakes supported on Co nanowires as a binderless electrode for electrochemical capacitor. This is the first report AAO template is used as a source of Al3+ to form the LDH directly. Capacitance was found to increase with the amount of Co/Al-LDH. This content is controllable by varying the duration of alkaline treatment. High capacitance of 0.510 F/cm2 was achieved for sample containing 12% Al measured at current density 2.5 mA/cm2 in 1 M KOH. The electrodes also exhibited good stability, maintaining more than 90% of their original capacitance after 3000 continuous charge–discharge cycles.

 

Teaching Contributions

  • CM1502 General and Physical Chemistry for Engineers
  • SP2251 Science at the Nanoscale

 

Representative Publications 

  • Subha, R.; Nalla, V.; Lim, E. J. Q.; Vijayan, C.; Huang, B. B. S.; Chin, W. S.; Ji, W. Slow Down of Charge Transfer Owing to Auger Recombination and Two-Photon Action Cross-Section of CdS-CdSe-CdS Segmented Nanorods. ACS Photonics 2015, 2, 43-52.
  • Lee, K. K.; Chin, W. S.; Sow, C. H. Cobalt-Based Compounds and Composites as Electrode Materials for High-Performance Electrochemical Capacitors. J. Mater. Chem. A. 2014, 2, 17212-17248.
  • Lee, K. K.; Loh, P. Y.; Sow, C. H.; Chin, W. S. CoOOH Nanosheet Electrodes: Simple Fabrication for Sensitive Electrochemical Sensing of Hydrogen Peroxide and Hydrazine. Biosens. Bioelectron. 2013, 39, 255-260.
  • Zhang, Z. H.; Lu, M. H.; Xu, H. R.; Chin, W. S. Shape-Controlled Synthesis of Zinc Oxide: a Simple Method for the Preparation of Metal Oxide Nanocrystals in Non-Aqueous Medium. Chem. Eur. J. 2007, 13, 632-638.
  • Chin, W.S.; Sow, C.H.; Wee, A.T.S. Science at the Nanoscale - An Introductory Textbook; Pan Stanford Publishing, Singapore, 2010.