Evaluation of structured water on mineral interface by Raman and infrared spectroscopy

Abstract

Molecular structure of water in thin film shows different characteristics compared with that of free water. Thin film water was observed at mineral grain boundaries, and its structure might be influence by mineral surface. High temperature-pressure cell for micro-Raman and FT-IR spectroscopy have been developed to investigate molecular structure of thin film water under subcritical and supercritical conditions. In this study, it was measured the IR absorption spectrum of the thin film water and the Raman spectrum of the free water at PT conditions. The OH-stretching vibration changes with PT and solid surface conditions of water was confirmed.