Professor WONG Po Keung


(Office): Rm 621, Mong Man Wai Building

People WPK


(Office): (852) 3943 6383

Fax (852) 2603 5767
Email This email address is being protected from spambots. You need JavaScript enabled to view it.



Ph.D. in Microbiology     University of California at Davis
B.Sc. in Biology & M.Phil. in Biology (Microbiology)    The Chinese University of Hong Kong


  • Emeritus Professor, School of Life Sciences, CUHK
  • Associate Director, Environmental Science Programme, CUHK

Research Interests

  • Photocatalytic Treatment for Environmental/ Water Purification
  • Environmental Technology
  • Environmental Microbiology / Biotechnology

Representative Publications

  • Xia Dehua, An Taicheng, Li Guiying, Wang Wanjun, Zhao Huijun, Wong Po Keung. 2016. Synergistic photocatalytic inactivation mechanisms of bacteria by graphene sheets grafted plasmonic Ag-AgX (X= Cl, Br, I) composite photocatalyst under visible light irradiation. Water Research 99:149-161
  • Ng Tsz Wai, Zhang Lisha, Liu Jianshe, Huang Guocheng, Wang Wei, Wong Po Keung. 2016. Visible-light-driven photocatalytic inactivation of Escherichia coli by magnetic Fe2O3-AgBr. Water Research 90:111-118.
  • Sun Hongwei, Li Guiying, An Taicheng, Zhao Huijun, Wong Po Keung. 2016. Unveiling the photoelectrocatalytic inactivation mechanism of E. coli: Convincing evidence from responses of parent and anti-oxidation single gene knockout mutants. Water Research 88:135-143.
  • Huang Guocheng, Xia Dehua, An Taicheng, Ng Tsz Wai, Yip Ho Yin, Li Guiying, Zhao Huijun, Wong Po Keung. 2015. Dual roles of capsular extracellular polymeric substances in the photocatalytic inactivation of Escherichia coli: Comparison of E. coli BW25113 with its isogenic mutants. Applied and Environmental Microbiology 81:5174-5183
  • Xia Dehua, Shen Zhurui, Huang Guocheng, Wang Wanjun, Yu Jimmy C., Wong Po Keung. 2015. Red phosphorus: An earth-abundant element photocatalytst for “green” bacterial inactivation under visible light. Environmental Science & Technology 49:6264-6273
  • Xia Dehua, Ng Tsz Wai, An Taicheng, Li Guiying Li, Li Yan, Yip Ho Yin, Zhao Hunjun, Lu Anhuai, Wong Po Keung. 2013. A recyclable mineral catalyst for visible-light-driven photocatalytic inactivation of bacteria: Natural magnetic sphalerite. Environmental Science & Technology 47:11166-11173.
  • Wang Jun-Jian, Liu Xin, Ng Tsz Wai, Xiao Jie-Wen, Chow Alex T., Wong Po Keung. 2013. Disinfection byproducts formation from disinfecting pure bacterial cells and pipeline biofilms. Water Research 47:2701-2709.
  • Gao Minghui, An Taicheng, Li Guiying, Nie Xin, Yip Ho-Yin, Zhao Huijun, Wong Po Keung. 2012. Genetic studies of the role of fatty acid and coenzyme A in photocatalytic inactivation of Escherichia coli. Water Research 46:3951-3957.
  • Wang Wanjun, Yu Ying, An Taicheng, Li Guiying, Yip Ho Yin, Yu Jimmy C., Wong Po Keung. 2012. Visible-light-driven photocatalytic inactivation of E. coli K-12 by bismuth vanadate nanotubes: Bactericidal performance and mechanism. Environmental Science & Technology 46:4599-4606.
  • Chen Yanmin, Lu Anhuai, Li Yan, Zhang Lisha, Yip Ho Yin, Zhao Huijun, An Taicheng, Wong Po Keung. 2011. Naturally occurring sphalerite as a novel cost-effective photocatalyst for bacterial disinfection under visible light. Environmental Science & Technology 45:35689-2695.

Research Grants


Research Grant Council-General Research Fund (GRF)

A Comparative Study of Natural Magnetic Minerals for Efficient and Cost-Effective Visible-Light-Driven Photocatalytic Disinfection of Bacteria

HK$ 942,547


National Natural Science Foundation of China (NSFC)

Environmental Geochemical Transformation Mechanism of Typical Antibiotic-Resistant Bacteria and Antibiotic-Resistance Genes onto the Mineral Interface under the Light Irradiation (CUHK Principal Investigator)

RMB 740,000

2015-2017 ITSP Tier 3 Scheme  An Integrated Technology of Simultaneous Visible-Light-Driven Photocatalytic Dye Degradation and Hydrogen Production  HK$ 1,399,032 (plus HK$ 469,452 for two internships)


ITSP Tier 3 Scheme

Application of Natural Magnetic Sphalerite for Visible-Light-Driven Photocatalytic Disinfection

HK$ 1,249,999 (plus HK$ 263,651 for an internship)


Agricultural and Food Research Initiatives (AFRI) Fund, US Department of Agriculture, USA

Impacts of Prescribed Fire on Polycyclic Aromatic Hydrocarbon Production and Contaminant Phototransformation Reactions in Coastal Plain (CUHK Principal Investigator)

US$ 499,324


National Natural Science Foundation of China (NSFC)

Environmental Behavior of Typical Phenolic BFRs and its Enhancement Degradation Mechanism by Isolated Bacteria (CUHK Principal Investigator)

RMB 1,000,000



Study on the Control of Environmental Benign Degradation Pathway for PAEs by New Bismuth Series Photocatalysts under Solar Light (CUHK Principal Investigator)

RMB 820,000


Research Grant Council-General Research Fund (GRF)

Visible-light-driven Photocatalytic Disinfection of Bacteria by Natural Sphalerite

HK$ 1,090,183



Balancing of Bacteria and Disinfection Byproducts Contamination in Municipal Water Supply

HK$ 775,477


National Natural Science Foundation of China

Formation of Byproducts from Cellular Materials during Bacterial Disinfection (CUHK Principal Investigator)

RMB 350,000


Guangdong Technology Fund

Study on the Production of Disinfection Byproducts(s) of Various Drinking Water Disinfection Processes (CUHK Principal Investigator)

RMB 50,000


Research Grant Council- Competitive Earmarked Research Grant (CERG)

Development of Immobilized Photocatalyst for Disinfection of Pathogenic Bacteria under Visible Light

HK$ 982,000



Biosynthesis of Tetrodotoxin (TTX) from TTX-producing Bacteria: A Study on the Synthetic Pathways in vivo and the Cloning of the Bacterial TTX-producing Genes (Co-investigator)

HK$ 972,049


Research Grant Council- Central Allocation Vote (RGC-CAV)

Bioactive Substances from Marine Microbes (CUHK Principal Investigator)

HK$ 3,470,000



Fuzzy Air Quality Indices for Management of Indoor Air Quality in Air Conditioned Buildings (Co-investigator)

HK$ 324,000



Conversion of Industrial Biomass Wastes into metal Sorbents

HK$ 781,071



Integrated Photochemical-Biological Treatment of Dye-containing Effluent of Textile and Dyeing Industry

HK$ 1,353,000


Industrial Technology Fund

Development of Advanced Photocatalytic Nano-coating Technologies for Environmental and Health Industries (Deputy Project Coordinator)

HK$ 6,600,000



Bioactive Substances from Marine Bacteria (CUHK Principal Investigator)

HK$ 3,500,000



A Novel Process for Removing and Recovering Metal Contaminants Using Intergrated Biosorption and Electrodeposition (Co-investigator)

HK$ 517,817



Integrated Chemical-biological Treatment of Dye-containing Effluent of Textile and Dyeing Industry

HK$ 720,500



Automatic Microbial Identification System (Co-investigator)

HK$ 2,980,000



Removal and Recovery of Metal Ions from Electroplating Effluent by a Combined Chemical-biomagnetic System

HK$ 955,000



Study of Magnetite-immobilised Bacterial-cell System for Removal and Recovery of Metals from Electroplating Effluent

HK$ 781,000



Removal and Recovery of Nickel Ion (Ni2+) from Electroplating Effluent by Bacterial Cells Immobilised in Magnetites

HK$ 542,000


Croucher Foundation Research Grant

Effects of Oil and Oil Dispersants on Marine Plankton in Hong Kong Waters

HK$ 1,302,000



Application of Microbial Technology in Degradation and Decolorization of Synthetic Dyes

HK$ 570,000


Croucher Foundation Research Grant

Effects of Heavy Metals on Marine Planktonic Organisms in Tolo Harbour

HK$ 603,000



Removal of Heavy Metals from Wastewater by Immobilized Microbial Cells

HK$ 500,000

 Professional Activities

  • Visiting Professor (Nankai University of China, Tianjin, China)
  • Visiting Professor (South China University of Technology, Guangzhou, China)
  • Visiting Professor (Central China Normal University, Wuhan, China)
  • Visiting Professor (Guangdong University of Technology, Guangzhou, China)
  • Adjunct Professor (Clemson University, South Carolina, USA)
  • Member, CAS/SAFE A International Partnership Program for Creative Research Teams of Chinese Academy of Sciences
  • Associate Editor (Journal of Environmental Sciences, Elsevier Science Ltd., USA)
  • Coordinating Editor (Environmental Geochemistry and Health, Springer, Germany)
  • Member, Editorial Board, Ecotoxicology and Environmental Safety (Elsevier Science Ltd., USA)
  • Member, Water Pollution Control Appeal Board Panel, Hong Kong SAR Government, Hong Kong
  • Member, ISO 1400 Technical Committee, Hong Kong Quality Assurance Agency (HKQAA), Hong Kong
  • Member, HKQAA-5S Scheme Technical Committee, HKQAA, Hong Kong 


  • 2015, Higher Education Outstanding Scientific Research Output Award (Science and Technology) in the category of Natural Sciences (Second Class), Ministry of Education, China