Effect of Hydrogen Bonding on the Surface Tension Properties of Binary Mixture (Acetone-Water) by Raman Spectroscopy

Abstract

The structure and properties of water and aqueous solutions have always been the focus of attention. The surface tension of acetone aqueous solutions were measured by using Raman spectra in different molecule environments, and the changes of surface tension were analyzed with hydrogen bonding in the mixtures. In this case, OH stretching bands were fitted into three Gaussian components and then assigned to different hydrogen-bonded structures. Furthermore, it can be concluded that the changes of microstructure on the binary mixture solutions exhibited regularly with the additive acetone, indicating that there showed the correlation between surface tension and relative peak intensity. The results show that the strengthening of hydrogen bonding between acetone and water will gradually weaken the surface tension of the solutions. It was confirmed that there showed the relationship between the microstructure and macroscopic properties of the aqueous solutions by the basis experiment data using a spectroscopy method.

Monitoring of the Critical Meniscus of Very Low Liquid Volumes Using an Optical Fiber Sensor

“…9, obtained when the fiber withdrawal speed was 0.1 mm/min and the temperature changed from 22 °C to 60 °C. It was clearly demonstrated through this that the ΔCMH CA concave CA convex CMH varied with temperature, which is due to the state of the hydrogen bonding in water, which consequently becomes weaker [30]. Different speeds of extracting the fiber from the liquid were investigated (up to 2 mm/min) and no appreciable CMH changes were detected, a similar result to that demonstrated by Extrand et al [8].…”

Hydrogen-Bonding Interactions in Hybrid Aqueous/Nonaqueous Electrolytes Enable Low-Cost and Long-Lifespan Sodium-Ion Storage

“…Because of the relatively high attraction among water molecules through the hydrogen-bonding network, water has high surface tension. 16 By the introduction of ethanol, new ethanol-water interactions (cross association) occur. The addition of ethanol in water breaks the water hydrogen-bonding network, resulting in a decrease of the water-water hydrogen bonds.…”

Investigation on the Influence of Microstructure Based on Hydrogen Bonding on Surface Tension by Raman Spectroscopy

“…is is mainly due to the strong hydrogen bonding between the N atoms of acetonitrile and the H atoms of H 2 O, and the number of hydrogen bonds in the solution increases with the increasing content of acetonitrile, and hydrogen-bonding interaction is strengthened in the range of low concentration as the molar ratio does not in excess of 1. us, the CN stretching bond length is elongated so that the vibration force constant decreases, leading to the movement of vibration peak to high wavenumbers. Besides, in the pure water system, the status of water molecules is divided into three categories, including the free water molecules, partially hydrogen-bonded water that forms a hydrogen bond between a water molecule and one or more molecules around it, and a tetrahedral hydrogen bond structure formed with a water molecule surrounded by four water molecules [24,25,40]. On the OH stretching band, the shoulder peak around 3200 cm − 1 is the fully hydrogen-bonded Raman peak of the tetrahedral water structure, and meantime, the peak around 3400 cm − 1 is the partially hydrogen-bonded peak between the water molecules in the solution [24].…”

“…e surface tension was measured [40] by using a ZL-10-type automatic digital display interface tensiometer purchased at Zibo Aiji Electric Co., Ltd., (Shandong, China), with the measuring range at 2 to 200 mN/m; accuracy and resolution are 0.1 mN/m and 0.2 mN/m, respectively. e Raman spectrum system [40] is constructed independently by our laboratory equipped with an Andor Shamrock SR-500i-C-R-type spectrometer and Andor iDus CCD (charge-coupled device) detector produced by the UK ANDOR company, and a 1200 grove/mm grating with a wavelength resolution of about 0.05 nm was employed. 50 times long focus objective lens (parameter: 50×/0.35) was used to focus the samples.…”