Active and Stable Liquid Water Innovatively Prepared Using Resonantly Illuminated Gold Nanoparticles

作者：Chen Hsiao Chien; Hwang Bing Joe; Mai Fu Der; Liu Yu Chuan^*; Lin Chun Mao; Kuo Hsien Shou; Chou Duen Suey; Lee Ming Jer; Yang Kuang Hsuan; Yu Chung Chin; Chen Jiun Rong; Lo Tsui Yun; Tsai Hui Yen; Yang Chih Ping; Wang Chi; Hsieh Hsiao Ting; Rick John

来源：ACS Nano, 2014, 8(3): 2704-2713.

DOI：10.1021/nn406403c

• small water clusters
• Au nanoparticles
• resonant illumination
• solubility
• free radical

The properties of confined liquid water, or liquid water in contact with hydrophobic surfaces, are significantly different from those of bulk liquid water. However, all of water%26apos;s commonly described properties are related to inert %26quot;bulk liquid water%26quot; which comprises a tetrahedral hydrogen-bonded network. In this work, we report an innovative and facile method for preparing small water clusters (SWCs) with reduced affinity hydrogen bonds by letting bulk water flow through supported Au nanoparticles (NPs) under resonant illumination to give NP-treated (AuNT) water at constant temperature. Utilizing localized surface plasmon resonance on illuminated Au NPs, the strong hydrogen bonds of bulk water can be disordered when water is located at the illuminated Au/water interface. The prepared SWCs are free of Au NPs. The energy efficiency for creating SWCs is similar to 17%. The resulting stable AuNT water exhibits distinct properties at room temperature, which are significantly different from the properties of untreated bulk water, examples being their ability to scavenge free hydroxyl and 2,2-diphenyl-1-picrylhydrazyl radicals and to effectively reduce NO release from lipopolysaccharide-induced inflammatory cells.

• 出版日期2014-3
• 单位河北医科大学