Dr. Ivo Alxneit

Short description
Senior Scientist
Paul Scherrer Institute PSI
Forschungsstrasse 111
5232 Villigen PSI

Professional experience

2016 - present: Senior Scientist, Applied Catalysis and Spectroscopy group, Paul Scherrer Institut
2004 - 2015: Senior Scientist, Laboratory for Solar Technology, Paul Scherrer Institut
1994 - 2004: Scientific Associate, Solar Chemistry and Physics group, Paul Scherrer Institut
1993 - 1994: Postdoctoral Research Associate, UCSB (Group of Prof. G. D. Stucky)
1987 - 1993: Research Assistant, University of Bern (Group of Prof. G. Calzaferri)


1992 PhD in Chemistry, University of Bern, Switzerland
1987 Diploma in Chemistry, University of Bern, Switzerland

more recent entries

Ivo Alxneit in DORA


Potamias, D., Alxneit, I., Sans, J.-L., Guillot, E., Wokaun, A., Assessment of Double Modulation Pyrometry as a diagnostic tool for use in concentrated solar facilities, Sol. Energ. 174 (2018) 660. doi:10.1016/j.solener.2018.09.028

Potamias, D., Alxneit, I., Koepf, E., Wokaun, A., Double Modulation Pyrometry Applied to Radiatively Heated Surfaces with Dynamic Optical Properties, J. Sol. Energ. Eng. 141 (2018) 011003. doi:10.1115/1.4040842

Alxneit, I., HRTEMFringeAnalyzer a free python module for an automated analysis of fringe pattern in transmission electron micrographs, J. Microsc. 271 (2018) 62. doi:10.1111/jmi.12695


Potamias, D., Alxneit, I., Wokaun, A., Double modulation pyrometry: A radiometric method to measure surface temperatures of directly irradiated samples, Rev. Sci. Instrum. (2017) 095112. doi:10.1063/1.4987129

Koepf, E., Alxneit, I., Wieckert, C., Meier, A., A review of high temperature solar driven reactor technology: 25 years of experience in research and development at the Paul Scherrer Institute, Appl. Energ. 188 (2017) 620 (2017). doi:10.1016/j.apenergy.2016.11.088

Bhosale, R. ., Kumar, A., AlMomani, F., Ghosh, U., Sutar, P., Takalkar, G., Ashok, A., Alxneit, I., Effectiveness of Ni incorporation in iron oxide crystal structure towards thermochemical CO2 splitting reaction, Ceram. Int. 43 (2017) 5150. doi:10.1016/j.ceramint.2017.01.034

Bhosale, R.R., Kumar, A., Almomani, F., Khraisheh, M., Alxneit, I., Catalytic Reduction of CO2 into Solar Fuels via Ferrite Based Thermochemical Redox Reactions, MRS Adv. 2 (2017), 3395. doi:10.1557/adv.2017.360


Bhosale, R. R., Kumar, A., AlMomani, F., Ghosh, U., Al-Muhtaseb, S., Gupta, R., Alxneit, I., Assessment of CexZryHfzO2 based oxides as potential solar thermochemical CO2 splitting materials. Ceram. Int. 42 (2016) 9354. doi:10.1016/j.ceramint.2016.02.100

Bhosale, R. R., Kumar, A., AlMomani, F., Alxneit, I., Sol-gel derived CeO2-Fe2O3 nanoparticles: Synthesis, characterization and solar thermochemical application, Ceram. Int. 42 (2016) 6728. doi:10.1016/j.ceramint.2016.01.042

Bhosale, R. R., Kumar, A., AlMomani, F., Alxneit, I., Propylene oxide assisted sol-gel synthesis of zinc ferrite nanoparticles for solar fuel production, Ceram. Int. 42 (2016) 2431. doi:10.1016/j.ceramint.2015.10.043

Brkic, M., Koepf, E., Alxneit, I., Meier, A., Vacuum powder feeding and dispersion analysis for a solar thermochemical drop-tube reactor, Chem. Eng. Sci. 152 (2016) 280. doi:10.1016/j.ces.2016.06.024

Lin, F., Rothensteiner, M., Alxneit, I., van Bokhoven, J. A., Wokaun, A., First demonstration of direct hydrocarbon fuel production from water and carbon dioxide by solar-driven thermochemical cycles using rhodium-ceria. Energy Environ. Sci. 9 (2016) 2400. doi:10.1039/C6EE00862C

Lin, F., Samson, V. A., Wismer, A. O., Grolimund, D., Alxneit, I., Wokaun, A., Zn-modified ceria as a redox material for thermochemical H2O and CO2 splitting: effect of a secondary ZnO phase on its thermochemical activity, CrystEngComm 18 (2016) 2559. doi:10.1039/C6CE00430J


Lin, F., Alxneit, I., Wokaun, A., Structural and chemical changes of Zn-doped CeO2 nanocrystals upon annealing at ultra-high temperatures, CrystEngComm 17 (2015) 1646. doi:10.1039/c4ce02202e

Lin, F., Delmelle, R., Vinodkumar, T., Reddy, B. M., Wokaun, A., Alxneit, I., Correlation between the structural characteristics, oxygen storage capacities and catalytic activities of dual-phase Zn-modified ceria nanocrystals. Catal. Sci. Technol. 5 (2015) 3556. doi:10.1039/c5cy00351b

Lin, F., Wokaun, A., Alxneit, I., Rh-doped Ceria: Solar Organics From H2O, CO2 and Sunlight? Energy Procedia 69 (2015) 1790. doi:10.1016/j.egypro.2015.03.151

Venkataswamy, P., Jampaiah, D., Lin, F., Alxneit, I., Reddy, B. M., Structural properties of alumina supported Ce-Mn solid solutions and their markedly enhanced catalytic activity for CO oxidation, Appl. Surf. Sci. 349 (2015) 299. doi:10.1016/j.apsusc.2015.04.220


Durgasri, D. N., Vinodkumar, T., Lin, F., Alxneit, I., Reddy, B. M., Gadolinium doped cerium oxide for soot oxidation: Influence of interfacial metal-support interactions. Appl. Surf. Sci. 314 (2014) 592. doi:10.1016/j.apsusc.2014.07.036

Guillot, E., Alxneit, I., Ballestrin, J., Sans, J. L., Willsh, C., Comparison of 3 Heat Flux Gauges and a Water Calorimeter for Concentrated Solar Irradiance Measurement, Energy Procedia 49 (2014) 2090. doi:10.1016/j.egypro.2014.03.221

Vinodkumar, T., Naga Durgasri, D., Reddy, B. M., Alxneit, I., Synthesis and Structural Characterization of Eu2O3 Doped CeO2: Influence of Oxygen Defects on CO Oxidation, Catal. Lett. 144 (2014) 2033. doi:10.1007/s10562-014-1367-5


Alxneit, I., Tschudi, H. R., Modeling the formation and chemical composition of partially oxidized Zn / ZnO particles formed by rapid cooling of a mixture of Zn(g) and O2, J. Materials (2013) 718525. doi:10.1155/2013/718525


Alxneit, I., Schmit, H., Spectral Characterization of PSI's High-Flux Solar Simulator, J. Sol. Energ. Eng. 134 (2012) 011013. doi:10.1115/1.4005249

Alxneit, I., Error analysis of the radiative power determined from flux distributions measured with a camera in a Xe arc lamp-based solar simulator, J. Sol. Energ. Eng. 134 (2012) 044501. doi:10.1115/1.4007493


Alxneit, I., Measuring temperatures in a high concentration solar simulator - Demonstration of the principle, Sol. Energy 85 (2011) 516. doi:10.1016/j.solener.2010.12.016

2010 and older

Rütten, F., Alxneit, I., Tschudi, H. R., Kinetics of homogeneous nucleation and condensation of n-butanol at high supersaturation, Atmos. Res. 1 (2009) 124. doi:10.1016/j.atmosres.2008.09.009

Alxneit, I., Assessing the Feasiblity of Separating a Stoichiometric Mixture of Zinc Vapor and Oxygen by a Fast Quench - Model Calculations, Sol. Energy 82 (2008) 959. doi:10.1016/j.solener.2008.05.009

Winkel, L., Alxneit, I., Sturzenegger, M., Thermal decomposition of copper concentrates under concentrated radiation - Mechanistic aspects of the separation of copper from iron sulphide phases, Int. J. Miner. Process. 88 (2008) 24. doi:10.1016/j.minpro.2008.04.004

Winkel, L., Wochele, J., Ludwig, C., Alxneit, I., Sturzenegger, M., Decomposition of Copper Concentrates at High Temperatures: an Efficient Method to Remove Volatile Impurities, Miner. Eng. 21 (2008) 731. doi:j.mineng.2008.02.003

Karlsson, M., Alxneit, I., Rütten, F., Wuillemin, D., Tschudi, H. R., A Compact Setup to Study Homogeneous Nucleation and Condensation, Rev. Sci. Instrum. 78 (2007) 34102. doi:10.1063/1.2712945

Winkel, L., Alxneit, I., Sturzenegger, M., New paths for a SO2-free copper production Miner. Eng. 20 (2007) 1179. doi:j.mineng.2007.04.006

Guesdon, C., Alxneit, I., Tschudi, H. R., Wuillemin, D., Petrasch, J., Brunner, Y., Winkel, L., Sturzenegger, M., PSI's 1 kW imaging furnace - A tool for high-temperature chemical reactivity studies, Sol. Energ. 80 (2006) 1344. doi:10.1016/j.solener.2005.04.028

Guesdon, C., Alxneit, I., Tschudi, H. R., Wuillemin, D., Sturzenegger, M., 1 kW imaging furnace with in situ measurement of surface temperature, Rev. Sci. Instrum. 77 (2006) 035102. doi:10.1063/1.2173844

Musella, M., Eckhoff, S., Tschudi, H. R., Alxneit, I., Development of an apparatus for the determination of spectral reflectivity at high temperatures in the visible, Int. J. Thermophys. 23 (2002) 1303. doi:10.1023/A:1019808824157

Corboz, M., Alxneit, I., Stoll, G., Tschudi, H. R., On the determination of quantum efficiencies in heterogeneous photocatalysis. J. Phys. Chem. B 104 (2000) 10569. doi:10.1021/jp000253e

Alxneit, I., Corboz, M., Influence of photoadsorbed O-2 On the photoreduction of CO2 with H2O at the surface of TiO2, J. Phys. IV, 9 (1999) 295. doi:10.1051/jp4:1999345

Srdanov, V. I., Alxneit, I., Stucky, G. D., Reaves, C. M., DenBaars, S. P., Optical properties of GaAs confined in the pores of MCM-41, J. Phys. Chem. B 102 (1998) 3341. doi:10.1021/jp9729932

Saladin, F., Alxneit, I., Temperature dependence of the photochemical reduction of CO2 in the presence of H2O at the solid/gas interface of TiO2, J. Chem. Soc. Faraday T. 93 (1997) 4159. doi:10.1039/a704801g

Swiss Society for Optics and Microscopy (SSOM)
Swiss Chemical Society (SCS)
European Photochemistry Association (EPA)
Representative ENE in PSI’s Electron Microscopy Facility (EMF)