Dr. Wey Yang TEOH

PhD, The University of New South Wales.

Associate Professor (School of Energy and Environment)

Dr. Wey Yang TEOH

Contact Information

Office: AC1-B5427
Phone: +(852)-3442-4627
Fax: +(852)-3442-0688
Email: wyteoh@cityu.edu.hk
Website: Joint Laboratory for Energy and Environmental Catalysis
Time slots for consultation

Research Interests

  • Nanomaterials for Energy and Environmental Applications
  • Energy-related Heterogeneous Catalysis and Photocatalysis
  • Remediation of Air and Water
  • Excitonic Solar Cells
  • Environmental Nanotoxicology
Advanced Functional Materials

Advanced Functional Materials

Advanced Functional Materials

Advanced Functional Materials

Dr. Wey Yang Teoh received his BE (Chemical Engineering, Hons. I) in 2003 and PhD in 2007, both from The University of New South Wales. Upon completing his PhD, he was Research Associate at the ARC Centre of Excellence for Functional Nanomaterials, during which time he was awarded the prestigious ARC Australian Postdoctoral Fellow (APD). He was known for his work in bridging the industrially-scalable flame spray synthesis and catalytic applications. He joined the School of Energy and Environment, CityU, as Assistant Professor (Tenure track) in August 2010. He received early tenure and promotion to Associate Professor in 2015.

Research Interests:

Dr Teoh’s research activities are centred around advanced catalytic processes, both photo- and thermal-activated ones. The work of his group encompasses the innovative synthesis of nanoscale catalysts, establishing the charge transport and surface molecular reactions, kinetics and reaction engineering analyses, and transferring the knowhow to various urgent energy and environmental catalytic applications. Among the applications that he specialises in include solar chemical conversion, fuel cells-related reactions, carbon dioxide reduction, biomass conversion, air purification, and wastewater treatment. He works actively with the government agency and leading multinational corporations (Fortune 500 list) to provide catalytic solutions to their processes and products development.

  • Solar chemical conversion
    Photoelectrochemical water splitting and H2 evolution reaction, solar conversion of CO2
  • Fuel cells-related reactions
    Preferential oxidation (PROX) of CO, methanation of CO, oxygen reduction reaction (ORR)
  • Carbon dioxide reduction
    Power-to-Gas (P2G) conversion, solar conversion of CO2
  • Biomass conversion
    Photocatalytic fuel cells (PFCs) - direct conversion of wastewater to solar electricity, solid acids-based hexose conversion
  • Air purification
    Thermal and photocatalytic oxidation of volatile organic carbons (VOCs), NOx reduction (deNOx)
  • Wastewater treatment
    Solar remediation of micropollutants, especially those belonging to persistent organic pollutants (POPs), endocrine disrupting chemicals (EDCs), and pharmaceuticals and personal care products (PPCPs)

Honours and Awards

  • PSA best paper award in Particulate System Analysis
  • CHEMECA Graeme Jameson Award in Particle Technology Workshop
  • International Fine Particles Research Institute (IFPRI) Reg Davies Award
  • Australian Postdoctoral Fellow, awarded by the Australia Research Council (ARC)
  • ARC Discovery Projects DP986398 and DP1097149
  • Editorial Board of Conference Papers in Materials Science (2012-present)
  • Co-Chair and main organizer of CECAM: Future Challenges in CO2 Reduction, Bremen, Germany (2012)
  • International Organizing Committee of Photocatalysis and Solar Energy Conversion (PASEC-2), Kyoto, Japan (2013)
  • Co-chair of Nanotechnology for Energy and Environment Symposium, International Conference on Nanoscience and Nanotechnology (ICONN), Adelaide, Australia (2014)

Positions Available

Candidates interested in postdoctoral, postgraduate and undergraduate research positions are strongly encouraged to apply. Research exchange at all levels may also be possible. Candidates should have background in Chemistry, Physics, Materials Science, Nanotechnology or Engineering. Successful candidates will develop interdisciplinary expertise in Nanomaterials design and the wider Nanotechnology during the course of attachment. Candidates will also be involved in collaborative researches with other local and foreign laboratories.


City University of Hong Kong is an equal opportunity employer and we are committed to the principle of diversity. We encourage applications from all qualified candidates, especially applicants who will enhance the diversity of our staff.


Peer Reviewed Journal Publications

Review article
  • Teoh, W.Y., “A perspective on the flame spray synthesis of photocatalyst nanoparticles” Materials 2013, 6, 3194 – Invited Review in Special Issue in Advances in Catalytic Materials (Available online)
  • Teoh, W.Y., Scott, J., Amal, R., “Evolutionary progress of heterogeneous photocatalysis: From classical radical chemistry to engineering nanomaterials and solar reactors” J. Phys. Chem. Lett. 2012, 3, 629– Invited perspective, Top 10 Most Read in the journal in 2012
    (Available online)
    Featured in The American Chemical Society Virtual Issue of “TiO2 Nanostructures: Recent Physical Chemistry Advances”
    (Available online)
  • Teoh, W.Y., Amal, R., Mädler, L., “Flame spray pyrolysis: An enabling technology for nanoparticles design and fabrication” Nanoscale, 2010, 2, 1324
    (Available online)
Regular articles 
  • Dreyer, J.A.H., Grossmann, H.K., Chen, J., Grieb, T., Gong, B.B., Sit, P.H.-L., Mädler, L., Teoh, W.Y.,* “Preferential oxidation of carbon monoxide over Pt-FeOx/CeO2 synthesized by two-nozzle flame spray pyrolysis” J. Catal. 2015 accepted
  • Teoh, W.Y.,* Doronkin, D.E., Beh, G.K., Dreyer, J.A.H., Grunwaldt, J.-D., “Methanation of carbon monoxide over promoted flame-synthesized cobalt clusters stabilized in zirconia matrix” J. Catal. 2015, 326, 182 (Available online)
  • Schneider, J., Vaneski, A., Pesch, G.R., Susha, A.S., Teoh, W.Y., Rogach, A.L., “Enhanced hydrogen evolution rates at high pH with a colloidal cadmium sulphide–platinum hybrid system” APL Mater. 2014, 2, 126102 (Available online)
  • Hu, C., Chu, K., Zhao, Y., Teoh, W.Y.,* “Efficient photoelectrochemical water splitting over anodized p-type NiO porous films” ACS Appl. Mater. Interfaces 2014, 6, 18558
    (Available online)
  • Gong, X., Bi, Y., Zhao, Y., Liu, G., Teoh, W.Y.,* “Graphene oxide-based electrochemical sensor: A platform for ultrasensitive detection of heavy metal ions” RSC Advances 2014, 4, 24653 (Available online)
  • Xiao, J., da Rosa, A., Zhang, R., Teoh, W.Y., Frauenheim, T., “Structural evolution of Cu/ZnO active sites: From reactive environment to ultrahigh vacuum” ChemCatChem 2014, 6, 2322 (Available online)
  • Wang, H.K., Kalytchuk, S., Yang, H.H., He, L.F., Hu, C.Y., Teoh, W.Y., Rogach, A.L., “Hierarchical growth of SnO2 nanostructured films on FTO substrates: Structural defects induced by Sn(II) self-doping and their effects on optical and photoelectrochemical properties” Nanoscale 2014, 6, 6084 (Available online)
  • Weis, C., Blank, F., West, A., Black, G., Woodward, R.C., Carroll, M.R.J., Mainka, A., Kartmann, R., Brandl, A., Bruns, H., Hallam, E., Shaw, J., Murphy, J., Teoh, W.Y., Aifantis, K.E., Amal, R., House, M., St Pierre, T., Fabry, B., “Labelling of cancer cells with magnetic nanoparticles for magnetic resonance imaging” Magn. Resonance Med. 2014, 71, 1896 (Available online)
  • Kalytchuk, S., Gupta, S., Zhovtiuk, O., Vaneski, A., Kershaw, S.V., Fu, H., Fan, Z., Kwok, E.C.H., Wang, C.-F., Teoh, W.Y., Rogach, A.L., “Semiconductor nanocrystals as luminescent down-shifting layers to enhance the efficiency of thin-film CdTe/CdS and crystalline Si solar cells” J. Phys. Chem. C 2014, 118, 16393 – Invited contribution, Michael Grätzel Festschrift (Available online)
  • Yang, H., Kershaw, S.V., Wang, Y., Gong, X., Kalytchuk, S., Rogach, A.L., Teoh, W.Y.,* “Shuttling photoelectrochemical electrons transport in tricomponent CdS/rGO/TiO2 nanocomposites” J. Phys. Chem. C  2013, 117, 20406 (Available online)
  • Lord, M.S., Tsoi, B., Gunawan, C., Teoh, W.Y., Amal, R., Whitelock, J.M., “Anti-angiogenic activity of heparin functionalised cerium oxide nanoparticles” Biomaterials 2013, 34, 8808 (Available online)
  • Gunawan, C., Sirimanoonphan, A., Teoh, W.Y., Marquis, C.P., Amal, R., “Submicron and nano formulations of titanium dioxide and zinc oxide stimulate unique cellular toxicological responses in the green microalga Chlamydomonas reinhardtiiJ. Hazardous Mater. 2013, 260, 984 (Available online)
  • Gunawan, C., Teoh, W.Y.,* Marquis, C.P., Amal, R.,* “Induced adaptation of Bacillus sp. to antimicrobial nanosilver” Small 2013, 21, 3554 – Frontispiece cover
    (Available online)
    - Highlighted by various media including Australian Research Council, Sciencedaily, The Age
    (Available online)
  • Wang, H., Dou, K., Teoh, W.Y., Zhan, Y., Hung, T.F., Zhang, F., Xu, J., Zhang, R., Rogach, A.L., “Engineering of facets, band structure and gas-sensing properties of hierarchical Sn2+-doped SnO2 nanostructures” Adv. Funct. Mater. 2013, 23, 4847 (Available online)
  • Gunawan, C., Teoh, W.Y., Ricardo, Marquis, C.P., Amal, R., “Zinc oxide nanoparticles induce cell filamentation in Escherichia coli” Part. Part. Syst. Charac. 2013, 30, 375 - Frontispiece cover
    (Available online)
  • Ting, S.R.S., J.M. Whitelock, Tomic, R., Gunawan, C., Teoh, W.Y., Amal, R., Lord, M.S., “Cellular uptake and activity of heparin functionalised cerium oxide nanoparticles in monocytes” Biomaterials 2013, 34, 4377
    (Available online)
  • Wang, Y., Vaneski, A., Yang, H., Gupta, S., Hetsch, F., Kershaw, S.V., Teoh, W.Y., Li, H., Rogach, A.L., “Polyhedral oligomeric silsesquioxane as a ligand for CdSe quantum dots” J. Phys. Chem. C 2013, 117, 1857
    (Available online)
  • Lord, M.S., Jung, M.S., Teoh, W.Y., Gunawan, C., Vassie, J.A., Amal, R., Whitelock, J.M., “Cellular uptake and reactive oxygen species modulation of cerium oxide nanoparticles in human monocyte cell line U937” Biomaterials 2012, 33, 7915
    (Available online)
  • Yang, H., Fan, W., Vaneski, A., Susha, A.S., Teoh, W.Y.,* Rogach, A.L., “Heterojunction engineering of CdTe and CdSe quantum dots on TiO2 nanotube arrays: Intricate effects of size-dependency and interfacial contact on photoconversion efficiencies” Adv. Funct. Mater. 2012, 22, 2821 – Cover page
    (Available online)
  • Gunawan, C., Teoh, W.Y., Marquis, C.P., Amal, R., “Cytotoxic origin of copper (II) oxide nanoparticles: Comparative studies with micron-sized particles, leachate and metal salts”ACS Nano 2011, 5, 7214
    (Available online)
  • Kho, Y.K., Teoh, W.Y., Iwase, A., Mädler, L., Kudo, A., Amal, R., “Flame preparation of visible-light-responsive BiVO4 oxygen evolution photocatalysts with subsequent activation via aqueous route” ACS Appl. Mater. Interfaces 2011, 3, 1997
    (Available online)
  • Kho, Y.K., Teoh, W.Y., Mädler, L., Amal, R., “Dopant-free, polymorphic design of TiO2 nanocrystals by flame aerosol synthesis” Chem. Eng. Sci. 2011, 66, 1409
    (Available online)
  • Iwase, A., Teoh, W.Y., Amal, R., “Photocatalytic overall water splitting over ALi2Ti6O14 (A: 2Na and Sr) with tunnelling structure” Chem. Lett. 2011, 40, 108
    (Available online)
  • Kydd, R., Ferri, D.,* Hug, P., Scott, J., Teoh, W.Y.,* Amal, R., “Temperature-induced evolution of reaction sites and mechanisms during preferential oxidation of CO” J. Catal. 2011, 277, 64
    (Available online)
  • Zhang, R.,# Teoh, W.Y.,# Amal, R., Chen, B., Kaliaguine, S. "Catalytic reduction of NO by CO over Cu/CexZr1-xO2 prepared by flame synthesis: Structural and mechanistic studies" J. Catal. 2010, 272, 210
    (Available online)
  • Tsekuoras, G., Miyashita, M., Kho, Y.K., Teoh, W.Y., Mozer, A.J., Amal, R., Mori, S., Wallace, G.G. "Charge transport in dye-sensitised solar cells based on flame-made TiO2 nanoparticles" IEEE J. Sel. Top. Quantum Electron. 2010, 16, 1641
    (Available online)
  • Li, D., Teoh, W.Y., Gooding, J.J., Selomulya, C., Amal, R. "Functionalisation strategies for protease immobilisation on magnetic nanoparticles" Adv. Funct. Mater. 2010, 20, 1767
    (Available online)
  • Li, D., Teoh, W.Y., Djunaedi, D., Gooding, J.J., Selomulya, C., Amal, R., "A facile functionalisation and phase reduction route of iron oxide nanomagnet for conjugation of matrix metalloproteinase" Adv. Eng. Mater (Adv. Biomater.) 2010, 12, B210
    (Available online)
  • Kho, Y.K., Iwase, A., Teoh, W.Y., Mädler, L., Kudo, A., Amal, R., "Photocatalytic H2 evolution over TiO2 nanoparticles. The synergistic effect of anatase and rutile" J. Phys. Chem. C 2010, 114, 2821
    (Available online)
  • Carroll, M., Woodward, R.C., House, M.J., Teoh, W.Y., Amal, R., Hanley, T., St. Pierre, T.G. "Experimental validation of proton transverse relaxivity models for superparamagnetic MRI contrast agents" Nanotechnology, 2010, 21, 035103
    (Available online)
  • Boyer, C., Priyanto, P., Davis, T.P., Pissuwan, D., Bulmus, V., Kavallaris, M., Teoh, W.Y., Amal, R., Carroll, M., Woodward, R., St. Pierre, T. "Anti-fouling magnetic nanoparticles for siRNA delivery" J. Mater. Chem. 2010, 20, 255
    (Available online)
  • Kydd, R., Scott, J., Teoh, W.Y., Chiang, K., Amal, R. "Understanding photocatalytic metallization of preadsorbed ionic gold on titania, ceria, and zirconia" Langmuir 2010, 26, 2099
    (Available online)
  • Kydd, R., Teoh, W.Y., Scott, J., Ferri, D., Amal, R. "Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde" ChemCatChem 2009, 1, 286
    (Available online)
  • Li, D., Teoh, W.Y., Woodward, R.C., Cashion, J.D., Selomulya, C., Amal, R. "Evolution of morphology and magnetic properties in silica/maghemite nanocomposites" J. Phys. Chem. C 2009, 113, 12040
    (Available online)
  • Emeline, A.V.,* Sheremetyeva, N.V., Khomchenko, N.V., Kuzmin, G.N., Ryabchuk, V.K., Teoh, W.Y.,* Amal, R. "Spectroscopic studies of pristine and fluorinated nano-ZrO2 in photostimulated heterogeneous processes" J. Phys. Chem. C 2009, 113, 4566
    (Available online)
  • Boyer, C., Bulmus, V., Priyanto, P., Teoh, W.Y., Amal, R., Davis, T.P. "Stabilisation and bio-functionalisation of iron oxide nanoparticles using heterotelechelic polymers" J. Mater. Chem. 2009, 19, 111
    (Available online)
  • Gunawan, C.,# Teoh, W.Y.,# Marquis, C.P., Juniahani, Lifia, Amal, R. "Reversible antimicrobial photoswitching in nanosilver" Small 2009, 5, 341
    (Available online)
    Featured  in Nature Nanotechnology as Research Highlights
    (Available online)
  • Kydd, R., Teoh, W.Y., Wang, Y., Wong, K., Zheng, Q.H., Scott, J., Yu, A.B., Zou, J., Amal, R. "Flame-synthesized ceria-supported copper dimers for preferential oxidation of CO" Adv. Funct. Mater. 2009, 19, 369 - Frontispiece cover
    (Available online)
  • Teoh, W.Y., Setiawan, R., Mädler, L., Grunwaldt, J.-D., Amal, R., Pratsinis, S.E. "Ru-doped cobalt-zirconia nanocomposites by flame spray pyrolysis: Physicochemical and catalytic properties" Chem. Mater. 2008, 20, 4069
    (Available online)
  • Denny, F., Scott, J., Chiang, K., Teoh, W.Y., Amal, R. "Insight towards the role of platinum in the photocatalytic mineralisation of organic compounds" J. Mol. Catal. A: Chem. 2007, 263, 93
    (Available online)
  • Li, D., Teoh, W.Y., Munroe, P., Selomulya, C., Woodward, R.C., Amal, R. "Insight into microstructural and magnetic properties of flame-made γ-Fe2O3 nanoparticles" J. Mater. Chem. 2007, 17, 4876
    (Available online)
  • Teoh, W.Y., Denny, F., Amal, R., Beydoun, D., Mädler, L., Pratsinis, S.E. "Photocatalytic mineralisation of organic compounds: A comparison of flame-made TiO2 catalysts" Top.  Catal. 2007, 44(4), 489
    (Available online)
  • Teoh, W.Y., Mädler, L., Amal, R. "Inter-relationship between Pt oxidation states on TiO2 and the photocatalytic mineralisation of organic matters" J. Catal. 2007, 251, 271 – Top 25 most downloaded articles (October - December 2007)
    (Available online)
  • Teoh, W.Y., Amal, R., Mädler, L., Pratsinis, S.E. "Flame sprayed visible light-active Fe-TiO2 for photomineralisation of oxalic acid" Catal. Today 2007, 120, 203 – Top 25 most downloaded articles (January - March 2007)
    (Available online)
  • Li, D., Teoh, W.Y., Selomulya, C., Woodward, R.C., Amal, R., Rosche, B. "Flame-sprayed superparamagnetic bare and silica-coated maghemite nanoparticles: synthesis, characterisation and protein adsorption-desorption" Chem. Mater. 2006, 18, 6403
    (Available online)
  • Teoh, W.Y., Mädler, L., Beydoun, D., Pratsinis, S.E., Amal, R. "Direct (one-step) synthesis of TiO2 and Pt/TiO2 nanoparticles for photocatalytic mineralisation of sucrose" Chem. Eng. Sci. 2005, 60, 5852 – Top 25 most downloaded articles for 4 consecutive seasons (July 2005 – June 2006)
    (Available online)
  • Hermawan, M., Bushell, G.C., Craig, V.S.J., Teoh, W.Y., Amal, R. "Floc strength characterisation technique. An insight into silica aggregation" Langmuir 2004, 20, 6450
    (Available online)

*Corresponding author
#Joint first authors