Visible-Light-Activated Bactericidal Functions of Carbon “Quantum” Dots

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• 作者：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
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：May 4, 2016
• 年：2016
• 卷：8
• 期：17
• 页码：10761-10766
• 全文大小：371K
• 年卷期：0
• ISSN：1944-8252

文摘

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.