B.S., Bowling Green State University, 1984
Group research web site
I have broad research interests in the general areas of geochemistry and mineralogy, with an emphasis on the molecular-level structure of minerals and their surfaces.
Environmental Molecular Science: A primary goal of my current research efforts is to understand the processes and reaction mechanisms operating at mineral-water interfaces, and the control that surface chemistry exerts on the rates of surface-controlled reactions such as dissolution, precipitation, and coprecipitation of impurities. The composition of fluids in near-surface environments are modified through reactions with minerals. The rates of these reactions determines how quickly contaminants can be transferred between fluid and solid phases, whether they can be effectively locked up in mineral phases, and how quickly they can be re-released upon change in fluid chemistry. Our research makes extensive use of Nuclear Magnetic Resonance (NMR) spectroscopic techniques to determine the the molecular-level structure of minerals and their surfaces, and for measuring kinetics of reactions for dissolved complexes. We are particularly interested in determining the structure of impurities in minerals, such as organic molecules, as models for how these ions and molecules bind to mineral surfaces. Our research group is affiliated with theCenter for Environmental Molecular Science (CEMS), which is a collaboration among researchers at Stony Brook, Brookhaven National Laboratory, Penn State University, and Temple University.
Kinetics of Oxygen Exchange Reactions
Nuclear Magnetic Resonance (NMR) Spectroscopy
Our group maintains a 400 MHz Varian Inova NMR spectrometer equipped with sample probe assemblies for experiments on a wide range of solid materials. A new wide-bore 500 MHz spectrometer for solid-state materials research was installed in 2004, and which is shared with the group of Prof. Clare Grey (Dept. of Chemistry, SUNY Stony Brook). We also use high-field spectrometers (600 and 700 MHz) in the Stony Brook Keck NMR Center for Structural Biology. Currently we are using solid-state NMR methods to study a variety of minerals, glasses, and mineral surfaces.
Phillips, B.L., Houston, J.R., Feng, J., and Casey, W.H. (2006) Observation of 103Rh NMR by cross-polarization. J. Am. Chem. Soc., in press
Casey, W.H., Olmstead, M.M., and Phillips, B.L. (2005) A new aluminum-hydroxide octamer. Inorg. Chem., 44:4888-4890.
Phillips, B.L., Lee, Y.J., Reeder, R.J. (2005) Organic coprecipitates with calcite: an NMR spectroscopic study. Env. Sci. Technol., 39:4533-4539.
Swaddle, T.W., Rosenqvist, R., Yu, P., Bylaska, E., Phillips, B.L., Casey, W.H. (2005), Kinetic evidence for five-coordination in AlOH2+(aq) ion. Science, 208:1450-1453.
Tangeman, J.A., Phillips, B.L., Nordine, P.C., and Weber, J.K.R. (2004) Thermodynamics and structure of single- and two-phase yttria-alumina glasses. J. Phys. Chem. B, 108:10663-10671.
Loring, J.; Yu, P.; Phillips, B.L.; Casey, W.H. (2004) Activation volumes for oxygen exchange between the GaO4Al12(OH)24(H2O)127+(aq) (GaAl12) polyoxocation and aqueous solution from variable pressure 17O NMR spectroscopy. Geochim. Cosmochim. Acta, 68:2791-2798.
Phillips, B.L., Lee, A.P., and Casey, W.H. (2003) Rates of oxygen exchange between the Al2O8Al28(OH) 56(H2O)2418+ (aq) (Al30) molecule and aqueous solution. Geochim. Cosmochim. Acta,67:2725-2733.
Yu, P., Lee, A., Phillips, B.L., and Casey, W.H. (2003) Potentiometric and 19F nuclear magnetic resonance spectroscopic study of fluoride substitution in the GaAl12 polyoxocation: Implications for aluminum (hydr)oxide mineral surfaces. Geochim. Cosmochim. Acta, 67:1065-1080.
Furrer, G., Phillips, B.L., Ulrich, K.-W., Pothig, R., and Casey, W.H. (2002) The origin of aluminum flocs in polluted streams. Science, 297:2245-2247.
Lee A.P., Phillips B.L., Olmstead M.M., Casey W.H. (2001) Synthesis and characterization of the GeO4Al12(OH)24(OH2)128+ polyoxcation. Inorg. Chem., 40:4485-4487.
Tangeman, J.A., Phillips, B.L., Navrotsky, A., and Weber, J.K.R. (2001) Vitreous forsterite (Mg2SiO4): Synthesis, structure, and thermochemistry. Geophys. Res. Lett., 28:2517-2520.
Casey W.H., and Phillips, B.L. (2001) The kinetics of oxygen exchange between sites in the GaO4Al12(OH)24(OH2)127+ (aq) molecule and aqueous solution. Geochim. Cosmochim. Acta,65:705.
Phillips, B.L., Casey, W.H., and Karlsson, M. (2000) Bonding and reactivity at oxide mineral surfaces from model aqueous complexes. Nature, 404:379-382.
Nordin, J.P., Sullivan, D.J., Phillips, B.L., and Casey, W.H. (1999) Mechanisms for F-promoted dissolution of Bayerite [b-Al(OH)3(s)] and Boehmite [g-AlOOH]: 19F NMR spectroscopy and experimental surface chemistry. Geochim. Cosmochim. Acta 63:3513-3524.
|Phillips, B.L., Xu, H., Heaney, P., and Navrotsky, A. (2000) 29Si and 27Al MAS-NMR spectroscopy of b-eucryptite (LiAlSiO4): the enthalpy of Si,Al ordering. Am. Mineral., 85:181-188.|
News & Announcements
Geosciences Department Newsletter
Professors John Parise and Artem Oganov pursue Materials Genome Initiative
Professor Deanne Rogers finds evidence for past groundwater on Mars
Professor Robert Liebermann accepts Edward A. Flinn Award
Professor Scott McLennan selected for NASA's Mars Science Laboratory Team