Chen Hsiao-Chien, Mai Fu-Der, Hwang Bing-Joe, Lee Ming-Jer, Chen Ching-Hsiang, Wang Shwu-Huey, Tsai Hui-Yen, Yang Chih-Ping, Liu Yu-Chuan
Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University No. 250, Wuxing St., Taipei 11031, Taiwan.
Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Rd., Taipei 10607, Taiwan.
Sci Rep. 2016 Feb 26;6:22166. doi: 10.1038/srep22166.
The strength of hydrogen bond (HB) decides water's property and activity. Here we propose the mechanisms on creation and persistence of innovatively prepared liquid water, which is treated by Au nanoparticles (AuNPs) under resonant illumination of green-light emitting diode (LED) to create Au NP-treated (sAuNT) water, with weak HB at room temperature. Hot electron transfer on resonantly illuminated AuNPs, which is confirmed from Au LIII-edge X-ray absorption near edge structure (XANES) spectra, is responsible for the creation of negatively charged sAuNT water with the incorporated energy-reduced hot electron. This unique electronic feature makes it stable at least for one week. Compared to deionized (DI) water, the resulting sAuNT water exhibits many distinct properties at room temperature. Examples are its higher activity revealed from its higher vapor pressure and lower specific heat. Furthermore, Mpemba effect can be successfully explained by our purposed hypothesis based on sAuNT water-derived idea of water energy and HB.
氢键（HB）的强度决定了水的性质和活性。在此，我们提出了关于创新制备的液态水的产生和持久性的机制，该液态水是在绿色发光二极管（LED）的共振光照下由金纳米颗粒（AuNPs）处理得到的，即Au NP处理的（sAuNT）水，在室温下具有较弱的氢键。通过Au LIII边缘X射线吸收近边结构（XANES）光谱证实，共振光照下的AuNPs上的热电子转移导致了带有能量降低的热电子的带负电的sAuNT水的产生。这种独特的电子特性使其至少能稳定一周。与去离子（DI）水相比，所得的sAuNT水在室温下表现出许多不同的性质。例如，其较高的蒸气压和较低的比热容表明其具有更高的活性。此外，基于sAuNT水的水能和氢键概念，我们提出的假设能够成功解释姆潘巴效应。
