Visible-Light-Activated Bactericidal Functions of Carbon "quantum" Dots

Mohammed J. Meziani, Xiuli Dong, Lu Zhu, Les P. Jones, Gregory E. Lecroy, Fan Yang, Shengyuan Wang, Ping Wang, Yiping Zhao, Liju Yang, Ralph A. Tripp, Ya Ping Sun

Research output: Contribution to journalArticlepeer-review

198 Citations (Scopus)


Carbon dots, generally defined as small carbon nanoparticles with various surface passivation schemes, have emerged as a new class of quantum-dot-like nanomaterials, with their optical properties and photocatalytic functions resembling those typically found in conventional nanoscale semiconductors. In this work, carbon dots were evaluated for their photoinduced bactericidal functions, with the results suggesting that the dots were highly effective in bacteria-killing with visible-light illumination. In fact, the inhibition effect could be observed even simply under ambient room lighting conditions. Mechanistic implications of the results are discussed and so are opportunities in the further development of carbon dots into a new class of effective visible/natural light-responsible bactericidal agents for a variety of bacteria control applications.

Original languageEnglish
Pages (from-to)10761-10766
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number17
Publication statusPublished - 4 May 2016
Externally publishedYes


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