Full Spectrum Visible LED Light Activated Antibacterial System Realized by Optimized Cu2O Crystals

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• 作者：Xiaotong Shi ; Chaowen Xue ; Fang Fang ; Xiangwei Song ; Fen Yu ; Miaoxing Liu ; Zhipeng Wei ; Xuan Fang ; Dongxu Zhao ; Hongbo Xin ; Xiaolei Wang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：8
• 期：13
• 页码：8386-8392
• 全文大小：452K
• ISSN：1944-8252

文摘

Assisted by three-dimensional printing technology, we proposed and demonstrated a full spectrum visible light activated antibacterial system by using a combination of 500 nm sized Cu₂O crystals and light-emitting diode (LED) lamps. Further improved antibacterial ratios were achieved, for the first time, with pure Cu₂O for both Gram-positive bacteria and Gram-negative bacteria among all of the six different color LED lamps. For practical antibacterial applications, we revealed that the nonwoven fabric could act as excellent carrier for Cu₂O crystals and provide impressive antibacterial performance. Furthermore, integrated with our self-developed app, the poly(ethylene terephthalate) film loaded with Cu₂O crystals also showed significant antibacterial property, thus making it possible to be applied in field of touch screen. The present research not only provided a healthier alternative to traditional ultraviolet-based sterilization but also opened an auto-response manner to decrease the rate of microbial contamination on billions of touch screen devices.