title: Quantitative evaluation on activated property-tunable bulk liquid water with reduced hydrogen bonds using deconvoluted Raman spectroscopy.
abstract: Interesting properties of water with distinguishable hydrogen-bonding structure on interfacial phase or in confined environment have drawn wide attentions. However, these unique properties of water are only found within the interfacial phase and confined environment, thus, their applications are limited. In addition, quantitative evaluation on these unique properties associating with the enhancement of water's physical and chemical activities represents a notable challenge. Here we report a practicable production of free-standing liquid water at room temperature with weak hydrogen-bonded structure naming Au nanoparticles (NPs)-treated (AuNT) water via treating by plasmon-induced hot electron transfer occurred on resonantly illuminated gold NPs (AuNPs). Compared to well-known untreated bulk water (deionized water), the prepared AuNT water exhibits many distinct activities in generally physical and chemical reactions, such as high solubilities to NaCl and O2. Also, reducing interaction energy within water molecules provides lower overpotential and higher efficiency in electrolytic hydrogen production. In addition, these enhanced catalytic activities of AuNT water are tunable by mixing with deionized water. Also, most of these tunable activities are linearly proportional to its degree of nonhydrogen-bonded structure (DNHBS), which is derived from the O-H stretching in deconvoluted Raman spectrum.
authors.affiliation: Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University , No. 250, Wuxing St., Taipei 11031, Taiwan.
authors.forename: Hsiao-Chien
authors.initials: HC
authors.lastname: Chen
authors.forename: Fu-Der
authors.initials: FD
authors.lastname: Mai
authors.forename: Kuang-Hsuan
authors.initials: KH
authors.lastname: Yang
authors.forename: Liang-Yih
authors.initials: LY
authors.lastname: Chen
authors.forename: Chih-Ping
authors.initials: CP
authors.lastname: Yang
authors.forename: Yu-Chuan
authors.initials: YC
authors.lastname: Liu
mesh_terms: D002516:Ceramics; D055664:Electrochemical Techniques; D006046:Gold / Q000737:chemistry*; D006860:Hydrogen Bonding; D053768:Metal Nanoparticles / Q000737:chemistry*; D010100:Oxygen / Q000378:metabolism; D012965:Sodium Chloride / Q000378:metabolism; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D012965:Sodium Chloride; D006046:Gold; D010100:Oxygen