(Bruker IFS 66 V/S)
The instrument is equipped with accessories for examining aqueous solutions and interfaces in a clean environment. Our group is in the process of building specialized chambers for sample preparation and for the examination of mineral-water interfaces.
- Infrared Spectroscopy of Surfaces
Custom-built variable angle external and internal reflection system Diffuse reflectance setup Attenuated Total Reflectance setup (with a variety of crystals covering the entire pH range)
- Infrared Spectroscopy of Aqueous Solutions Attenuated Total Reflectance set up (with a variety of crystals covering the entire pH range) CIRCLE cell, with a variety of crystals
Dual Emission Fluorometer
- Ultra-high resolution, custom-built, imaging spectrograph
- High-resolution double monochromator fluorescence spectrometer
- Accessories for solutions and solids
This is a soft X-ray beamline endstation built by our group in collaboration with the X-ray instrumentation researchers (Dr. Zahid Hussain) at the Advanced Light Source, Berkeley. This endstation facilitates the examination of the 1sspectroscopy of light elements in aqueous solutions and at the interfaces. Currently X-ray absorption spectroscopy can be conducted using this chamber. In near future this chamber will be used to conduct the X-ray emission spectroscopy of organic molecules and water in aqueous solutions and at the interfaces.
This study is in collaboration with Dr. Anders Nilsson at the Uppsala University & Stanford Synchrotron Radiation Laboratory. Currently we are using SXEER to examine the H-bonding networks in liquid water and the functional group chemistry of simple organic acids in aqueous solutions. When not in use, this instrumentation is stationed at the Advanced Light Source. The fabrication of this instrument is funded by the Laboratory Directed Research & Development funds of the Lawrence Berkeley National Laboratory, and a partial support for the X-ray emission spectrometer is obtained from the Chemical and Geosciences part of the Basic Energy Sciences (DOE).
Other facilities available in our laboratory
Many of the conventional laboratory facilities for doing wet chemistry experiments are available in our lab, including a cold room, glove box, centrifuges, titrator, etc.
Facilities accessible to our group at the synchrotrons
Stanford Synchrotron Radiation Laboratory. We use the sample assemblies and detectors available at the synchrotron for our X-ray absorption spectroscopy studies.
More information can be obtained from the SSRL website:
Advanced Light Source. We use the Scanning transmission X-ray microscope, X-ray microprobe, and the soft X-ray spectroscopy beamlines (6.3.1, 6.3.2, 8.0.1, 9.3.2) for the majority of our studies. When necessary we also use the synchrotron infrared beamlines in our investigation. More information can be obtained from the ALS website: http://www-als.lbl.gov.
Other facilities in the Geosciences Department and Princeton University
X-ray diffractometer, Raman Spectrometer, atomic force microscope, transmission electron microscope, scanning electron microscope, BET surface area analyzer, Inductively coupled plasma (ICP) spectrometer, ICP with mass spectrometry capabilities, ion-, gas-, and high-pressure-liquid chromatography systems, ultracentrifuge, and incubators for microbial research.