Highly-efficient photocatalytic disinfection of Escherichia coli by copper-doped molybdenum disulfide/bismuth sulfide under low-powered visible light irradiation

W. P.Cathie Lee, Terence L. Perix, Kulandai Arockia Rajesh Packiam, Meei Mei Gui, Chien Wei Ooi, Siang Piao Chai

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)


Reliable and affordable access to clean water has posted a threat in rural areas and fast expanding urban centers. Herein, a copper-doped MoS2/Bi2S3 photocatalyst is reported for photocatalytic bacterial disinfection. Under the irradiation of a single 18 W energy-saving light bulb, Cu-MoS2/Bi2S3 was able to achieve 100% inactivation of E. coli in 60 min. This high efficiency of Cu-MoS2/Bi2S3 can be attributed to its enhancement of light absorption and rapid electron-hole separation. This work provides a new insight into the potential use of energy efficient light source for water sanitation.

Original languageEnglish
Article number106003
Number of pages4
JournalCatalysis Communications
Publication statusPublished - 5 Jun 2020


  • Anti-bacterial
  • Molybdenum disulfide
  • Photocatalysis
  • Visible light
  • Water disinfection

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