Dr. rer. nat.

Lars Robben


Raum C3051

T: +49 (421) 218 - 63142
F: +49 (421) 218 - 98 63142
E: lrobben(.at.)uni-bremen.de

Universität Bremen
Chemische Kristallographie fester Stoffe /FB02
Leobener Straße /NW2
D-28359 Bremen

• Leitung des Röntgenlabors / REM-Labors
• Strahlenschutzbeauftragter nach RöV

Current research interests:

Porous materials:
Sodalites (SOD):
Template – framework interaction
Diffusion and intra-cage reactions
Structural and dynamical properties
Low temperature structural properties of sodalites
Cancrinites (CAN) / Intermediate Phase (INT)
Structural description of the intermediate phase
For temperature dependent X-ray powder diffraction and spectroscopic data:
Automatization of the treatment of large data sets
Autocorrelation of measurement data to pinpoint phase transitions etc. and to check the internal consistency of data sets


Since 2011
Research assistant – Solid State Chemical Crystallography / University of Bremen

Head of the X-ray and SEM lab / radiation protection officer
Project leader “Porous materials”

Ph.D. defence
Thesis: „Influence of the material composition on the airborne sound emission in cut-off grinding of concrete“

Research assistant – Institute for Mineralogy / University of Hanover
Head of the X-ray lab / radiation protection officer
Head of the SEM lab

Ph.D. student – Institute for Mineralogy / University of Hanover

Diploma in Earth Sciences / University of Hanover
Thesis: “Synthesis and Characterization of the Baryte-Celestine solid solution”

Study course „Earth Sciences“–University of Hanover

Study course “Physics/Astronomy” – University of Bonn


in press

30 L Robben:
On the autocorrelation method of external parameter depending data-sets
Zeitschrift für Kristallographie (2017) in press
29 H Petersen, L Robben, M Šehović, TM Gesing:
  Synthesis, temperature-dependent X-ray diffraction and Raman spectroscopic characterization of the sodalite to nosean phase-transformation of
  Microporous Mesoporous Materials 242 (2017) 144-15

28 R Kather, EA Rychagova, PS Camacho, SE Ashbrook, JD Woollins, L Robben, E Lork, SY Ketkov, J Beckmann:
Increasing the Brønsted Acidity of Ph2PO2H by the Lewis Acid B(C6F5)3. Formation of an Eight-Membered Boraphosphinate Ring [Ph2POB(C6F5)2O]2.
Chemical Communications 52 (2016) 10992-10995
27 A Ismail, I Abdelfattah, A Helal, S Al-Sayari, L Robben, DW Bahnemann:
Ease synthesis of mesoporous WO3-TiO2 nanocomposites with enhanced photocatalytic performance for photodegradation of herbicide imazapyr under visible light and UV illumination.
Journal of Hazardous Materials 307 (2016) 43-54
26 B Xiao, P Kegler, TM Gesing, L Robben, A Blanca-Romero, P Kowalski, Y Li, V Klepov, D Bosbach, EV Alekseev:
Giant Volume Change and Topological Gaps in Temperature- and Pressure-Induced Phase Transitions: Experimental and Computational Study of ThMo2O8.
Chemistry - A European Journal 22 (2016) 946-958
25 L Robben, E Merzlyakova, P Heitjans,T Gesing:
Symmetry reduction due to gallium substitution in the garnet Li6.43(2)Ga0.52(3)La2.67(4)Zr2O12.
Acta Crystallographica Section E: Crystallographic Communications, E72 (2016) 287-289

24 M Šehović, L Robben, TM Gesing:
Carbon dioxide uptake in nitrite-sodalite: reaction kinetics and template ordering of the carbonate-nosean formation.
Zeitschrift für Kristallographie, 230 (2015) 263-269
23 B Xiao, TM Gesing, LRobben, D Bosbach, EV Alekseev:
Dinuclear Face-Sharing Bioctahedral Tungsten (VI) Core and Unusual Thermal Behavior in Complex Th Tungstates.
Chemistry – A European Journal, 21 (2015) 7746-7754
22 A Ismail, I Abdelfattah, M Atitar, L Robben, H Bouzid, S Al-Sayari, DW Bahnemann:
Photocatalytic degradation of imazapyr using mesoporous Al2O3-TiO2 nanocomposites
Separation and Purification Technology, 145 (2015) 147-153
21 I Poltz, L Robben, JC Buhl, TM Gesing:
Synthesis, crystal structure and temperature-dependent behavior of gallogermanate nitrite sodalite |Na8(NO2)2|[GaGeO4]6.
Microporous and Mesoporous Materials, 203 (2015) 100-105


20 N Yu, VV Klepov, G Modolo, D Bosbach, EV Suleimanov, TM Gesing, L Robben, EV Alekseev:
Morphotrophy and Temperature-Driven Polymorphism in A2Th(AsO4)2 (A = Li, Na, K, Rb, Cs) Series.
Inorganic Chemistry, 53 (2014) 11231-11241


19 L Robben, TM Gesing:
Temperature-dependent framework-template interaction of |Na6(H2O)8|[ZnPO4]6 sodalite.
Journal of Solid State Chemistry, 207 (2013) 13-20
18 I Poltz, L Robben, JC Buhl, TM Gesing:
Synthesis, crystal structure and temperature-dependent behavior of gallogermanate tetrahydroborate sodalite |Na8(BH4)2|[GaGeO4]6.
Journal of Solid State Chemistry, 197 (2013) 370-378
17 MM Murshed, G Nénert, M Burianek, L Robben, M Mühlberg, H Schneider, RX Fischer, TM Gesing:
Temperature-dependent structural studies of mullite-type Bi2Fe4O9.
Microporous and Mesoporous Materials, 174 (2013) 54-61
16 TA Kandiel, L Robben, A Alkaim, D Bahnemann:
Brookite versus anatase TiO2 Photocatalysts: phase transformations and photocatalytic activities.
Photochem. Photobiol. Sci. 12 (2013) 602-609


15 L Robben, AA Ismail, SJ Lohmeier, A Feldhoff, DW Bahnemann, JC Buhl:
Facile Synthesis of Highly Ordered Mesoporous and Well Crystalline TiO2: Impact of Different Gas Atmosphere and Calcination Temperatures on Structural Properties
Chem. Mater. 24 (2012) 1268-1275
14 A Düvel, A Kuhn, L Robben, M Wilkening, P Heitjans:
Mechanosynthesis of Solid Electrolytes-Preparation, Characterization, and Li Ion Transport Properties of Garnet-type Al-doped Li7La3Zr2O12 Crystallizing with Cubic Symmetry
J. Phys. Chem. C116 (2012) 15192-15202
13 A Kuhn, JY Choi, L Robben, F Tietz, M Wilkening, P Heitjans:
Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
Z. Phys. Chem. 226 (2012) 525-537


12 AA Ismail, L Robben, DW Bahnemann:
Study of the Efficiency of UV and Visible-Light Photocatalytic Oxidation of Methanol on Mesoporous RuO2-TiO2 Nanocomposites
ChemPhysChem 12 (2011) 982-991
11 TA Kandiel, R Dillert, L Robben, DW Bahnemann:
Photonic efficiency and mechanism of photocatalytic molecular hydrogen production over platinized titanium dioxide from aqueous methanol solutions
Catalysis Today 161 (2011) 196-201
10 L Zhang, C Baumanis, L Robben, T Kandiel, DW Bahnemann:
Bi2WO6 Inverse Opals: Facile Fabrication and Efficient Visible-Light-Driven Photocatalytic and Photoelectrochemical Water-Splitting Activity
Small 19 (2011) 2714-2720
9 JC Buhl, K Schuster, L Robben
Nanocrystalline sodalite grown from superalkaline NaCl bearing gels at low temperature (333 K) and the influence of TEA on crystallization process
Micro. Meso. Mater. 142 (2011) 666-671
8 L Robben, AA Ismail, DW Bahnemann, JC Buhl:
Influence of the interdependency between matrix material and pore system on the Small Angle X-ray Scattering in ordered mesoporous materials
Micro. Meso. Mater. 143 (2011) 277-283


7 TA Kandiel, A Feldhoff, L Robben, R Dillert, DW Bahnemann:
Tailored titanium dioxide nanomaterials: anatase nanoparticles and brookite nanorods as highly active photocatalysts
Chem. Mater. 22 (2010) 2050-2060
6 L Robben, S Rahman, JC Buhl, B Denkena, B Konopatzki:
Airborne sound emission as a process monitoring tool in the cut-off grinding of concrete
Appl. Acoustics 71 (2010) 52-60
5 AA Ismail, DW Bahnemann, L Robben, V Yarovyi, M Wark:
Palladium doped porous titania photocatalysts: Impact of mesoporous order and crystallinity
Chem. Mater. 22 (2010) 108-116
4 L Robben, I Poltz, JC Buhl:
Crystal structure of sodium gallium germanium oxide, NaGaGeO4
Z. Kristallogr. NCS 225 (2010) 421-422


3 J Martynczuk, K Efimov, L Robben, A Feldhoff:
Performance of zinc-doped perovskite-type membranes at intermediate temperatures for long-term oxygen permeation and under a carbon dioxide atmosphere
J. Membr. Sci. 344 (2009) 62-70


2 B Denkena, D Boehnke, B Konopatzki, JC Buhl, S Rahman, L Robben:
Sonic analysis in cut-off grinding of concrete
Produc. Eng. 2 (2008) 209-218
1 CH Rüscher, N Eils, L Robben, H Schneider:
Hydrogen bonding and diffusion in mullite
J. Eur. Ceram. Soc. 28 (2008) 393-400

Book contributions

2 B Denkena, J Köhler, B Konopatzki, J-C Buhl, S Rahman, L Robben: Methodik zur Bewertung der Trennschleifeigenschaften von Beton,
in: H-W Hofmeister, B Denkena (Hrsg.): 65. Ausgabe Jahrbuch Schleifen, Honen, Läppen und Polieren - Verfahren und Maschinen; Essen, 2011, ISBN 978-3-8027-2959-1
1 B Denkena, B Konopatzki, L de Leon, J-C Buhl, S Rahman, L Robben: Akustische Prozessanalyse bei der Bearbeitung von Beton,
in: B. Denkena (Hg.): 6. IFW-Steinkolloquium - Entwicklungen in der Naturstein- und Bauwerkstoffbearbeitung, Institut für Fertigungstechnik und Werkzeugmaschinen, Hannover 12. und 13. November 2008; Berichte aus dem IFW Band 09/2008; ISBN 978-3-941416-04-8