Merve Yeşilbaş

 

 

Bio

2014 PhD candidate in Department of Chemistry, Umeå University, Sweden

2013 MSc in Department of Physics, Umeå University, Sweden

2011 BSc in Department of Physics, Yıldız Technical University, Turkey

 

Mineral surfaces control the adsorption of water vapour and other atmospheric gases (e.g CO2, SO2) as well as aqueous species formation. These reactions are central  to  atmospheric, environmental, (bio)geochemistry and even astrobiological studies.

My Ph.D. project (main supervisor: Jean-François Boily) is focused on the adsorption/condensation of water vapour and ice at mineral surfaces, as well as their relationship to  cryosalt minerals and their interactions with CO2. Mineral-bound thin water and ice films are directly relevant to, (bio)geochemistry, astrobiology and atmospheric sciences. For instance,  cloud formation can often be triggered by the condensation of water vapor on tiny mineral dust particles. My work involves the study of over 19 different minerals relevant to the atmosphere, terrestrial systems, and even potentially  for planet Mars.  These minerals are of different i) surface structures and (ii) morphologies, (iii) chemical compositions and (iv) particle sizes. Examples  include synthetic iron (oxyhydr)oxides, silicates, clays Arizona Test Dust (ATD) and Icelandic volcanic ash.

I predominantly use Fourier Transform Infrared Spectroscopy (FTIR) for my research. Using various reaction IR cells, I have experience in operating systems from ultrahigh vacuum to pressurized environments, and with temperatures ranging from -130°C to 700°C. In one of my most recent work, I am also mass spectrometry  to measure the release of CO2 from mixed water/ice-mineral assemblages. Additionally, I have gained, from by  MSc work in Physics, experience with Raman spectroscopy and spectroscopic ellipsometry to characterize semiconductors coated with thin carbon-based fullerene (C60) films .

 

Publications

 

[4] Yeşilbaş, M. and Boily, J.-F. Particle Size Controls on Water Adsorption and Condensation Regimes at Mineral Surfaces. Sci. Rep. 6, 32136; doi: 10.1038/srep32136 (2016).

[3] Yeşilbaş M. and Boily J-F., Ice Films at Mineral Surfaces, J. Phys. Chem. Lett, 7(14), 2849- 2855; DOI:10.1021/acs.jpclett.6b01037 (2016).

[2] Boily, J-F. , Yeşilbaş, M., Md. Musleh Uddin, Munshi., Baiqing, Lu., Trushkina, Yulia., Salazar-Alvarez, German., Thin Water Films at Multifaceted Hematite Particle Surfaces, Langmuir, 31(48), 13127-13137. DOI:10.1021/acs.langmuir.5b03167 (2015).

[1] Yesilbas M., Makarova T. L., Zakharova I., ‘Fullerene films with suppressed polymerizing ability’., Nanosystems: Physics, Chemistry, Mathematics, 5 (1), 53-61, (2014).

 

Submitted

Yeşilbaş, M., Lee, C.C., and Boily, J.-F. (2017). Brine freezing governed by microporous clay gels. Environmental Science: Nano (submitted)

Yeşilbaş, M., Holmboe, M. and Boily, J.-F. (2017). A cohesive vibrational and structural depiction of intercalated water in montmorillonite. ACS Earth Space Chem. (submitted).