@inbook{62857, abstract = {{The recovery of rare earth metals from secondary sources has attracted much attention due to their ever expanding demand in the high-tech industry. The studies reported here focus on the hydrometallurgical recovery of lanthanum and cerium from spent fluid catalytic cracking (FCC) catalysts in a two-step process: leaching with nitric acid and solvent extraction by tri-n-butyl phosphate (TBP) and di(2-ethylhexyl)phosphoric acid (D2EHPA). The experiments show a high dissolution yield of about 93% lanthanum and 42% cerium in a single leaching step with 2 M (126 g/L) HNO3 at 80 °C; only 11% aluminum has been dissolved simultaneously. In the subsequent solvent extraction step the best results for this leach liquor could be achieved using a 1:1 mixture of 25% (v/v) TBP (0.92 M) and 25% (v/v) D2EHPA (0.76 M) in n-decane without the need for any pH adjustment. In that case La(III) and Ce(III) can be extracted with 60% and 74% yield respectively in one stage from the majority of accompanying matrix elements. In particular no extraction of Al(III) could be observed under these conditions.}}, author = {{Wenzel, M. and Schnaars, Kathleen and Kelly, N. and Götzke, L. and Robles, S. M. and Kretschmer, K. and Le, Phuc Nguyen and Tung, Dang Thanh and Luong, Nguyen Huu and Duc, Nguyen Anh and Sy, Dang Van and Gloe, K. and Weigand, J. J.}}, booktitle = {{Rare Metal Technology 2016}}, isbn = {{9783319486161}}, publisher = {{Springer International Publishing}}, title = {{{Hydrometallurgical Recovery of Rare Earth Metals from Spent FCC Catalysts}}}, doi = {{10.1007/978-3-319-48135-7_4}}, year = {{2016}}, } @article{25312, author = {{Strube, Oliver I. and Rüdiger, Arne A. and Bremser, Wolfgang}}, issn = {{0143-7496}}, journal = {{International Journal of Adhesion and Adhesives}}, pages = {{9--13}}, title = {{{Buildup of biobased adhesive layers by enzymatically controlled deposition on the example of casein}}}, doi = {{10.1016/j.ijadhadh.2015.08.001}}, year = {{2015}}, } @article{25313, author = {{Strube, Oliver I. and Büngeler, Anne and Bremser, Wolfgang}}, issn = {{1525-7797}}, journal = {{Biomacromolecules}}, pages = {{1608--1613}}, title = {{{Site-Specific In Situ Synthesis of Eumelanin Nanoparticles by an Enzymatic Autodeposition-Like Process}}}, doi = {{10.1021/acs.biomac.5b00187}}, year = {{2015}}, } @article{23633, author = {{Steinrück, Hans-Georg and Will, J. and Magerl, A. and Ocko, B. M.}}, issn = {{0743-7463}}, journal = {{Langmuir}}, pages = {{11774--11780}}, title = {{{Structure of n-Alkyltrichlorosilane Monolayers on Si(100)/SiO2}}}, doi = {{10.1021/acs.langmuir.5b03091}}, volume = {{31}}, year = {{2015}}, } @article{23634, author = {{Haddad, Julia and Steinrück, Hans-Georg and Hlaing, Htay and Kewalramani, Sumit and Pontoni, Diego and Reichert, Harald and Murphy, Bridget M. and Festersen, Sven and Runge, Benjamin and Magnussen, Olaf M. and Magerl, Andreas and Deutsch, Moshe and Ocko, Benjamin M.}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, pages = {{17648--17654}}, title = {{{Order and Melting in Self-Assembled Alkanol Monolayers on Amorphous SiO2}}}, doi = {{10.1021/acs.jpcc.5b03554}}, volume = {{119}}, year = {{2015}}, } @article{23635, author = {{Khassanov, Artoem and Steinrück, Hans-Georg and Schmaltz, Thomas and Magerl, Andreas and Halik, Marcus}}, issn = {{0001-4842}}, journal = {{Accounts of Chemical Research}}, pages = {{1901--1908}}, title = {{{Structural Investigations of Self-Assembled Monolayers for Organic Electronics: Results from X-ray Reflectivity}}}, doi = {{10.1021/acs.accounts.5b00022}}, volume = {{48}}, year = {{2015}}, } @article{23636, author = {{Schiener, A. and Magerl, A. and Krach, A. and Seifert, S. and Steinrück, Hans-Georg and Zagorac, J. and Zahn, D. and Weihrich, R.}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, pages = {{11328--11333}}, title = {{{In situ investigation of two-step nucleation and growth of CdS nanoparticles from solution}}}, doi = {{10.1039/c5nr01602a}}, volume = {{7}}, year = {{2015}}, } @article{22679, author = {{Teschome, Bezu and Facsko, Stefan and Gothelf, Kurt V. and Keller, Adrian}}, issn = {{0743-7463}}, journal = {{Langmuir}}, pages = {{12823--12829}}, title = {{{Alignment of Gold Nanoparticle-Decorated DNA Origami Nanotubes: Substrate Prepatterning versus Molecular Combing}}}, doi = {{10.1021/acs.langmuir.5b02569}}, volume = {{31}}, year = {{2015}}, } @article{22680, author = {{Giner, Ignacio and Keller, Adrian and Grundmeier, Guido}}, issn = {{0010-938X}}, journal = {{Corrosion Science}}, pages = {{496--503}}, title = {{{Fundamental understanding of the corrosion and biomineralization of MgO surfaces – An in situ AFM study}}}, doi = {{10.1016/j.corsci.2015.08.024}}, volume = {{100}}, year = {{2015}}, } @article{22681, author = {{Wittenbrink, Isabel and Hausmann, Anne and Schickle, Karolina and Lauria, Ines and Davtalab, Roswitha and Foss, Morten and Keller, Adrian and Fischer, Horst}}, issn = {{0142-9612}}, journal = {{Biomaterials}}, pages = {{58--65}}, title = {{{Low-aspect ratio nanopatterns on bioinert alumina influence the response and morphology of osteoblast-like cells}}}, doi = {{10.1016/j.biomaterials.2015.05.026}}, volume = {{62}}, year = {{2015}}, } @article{22682, author = {{Mayer, Michael and Keller, Adrian and Szewzyk, Ulrich and Warnecke, Hans-Joachim}}, issn = {{0168-1656}}, journal = {{Journal of Biotechnology}}, pages = {{54--59}}, title = {{{On the way to identify microorganisms in drinking water distribution networks via DNA analysis of the gut content of freshwater isopods}}}, doi = {{10.1016/j.jbiotec.2014.12.022}}, volume = {{201}}, year = {{2015}}, } @article{22579, author = {{Grundmeier, Guido and von Keudell, Achim and de los Arcos de Pedro, Maria Teresa}}, issn = {{1612-8850}}, journal = {{Plasma Processes and Polymers}}, pages = {{926--940}}, title = {{{Fundamentals and Applications of Reflection FTIR Spectroscopy for the Analysis of Plasma Processes at Materials Interfaces}}}, doi = {{10.1002/ppap.201500087}}, year = {{2015}}, } @article{22582, author = {{Mitschker, Felix and Dietrich, Jan and Ozkaya, Berkem and de los Arcos de Pedro, Maria Teresa and Giner, Ignacio and Awakowicz, Peter and Grundmeier, Guido}}, issn = {{1612-8850}}, journal = {{Plasma Processes and Polymers}}, pages = {{1002--1009}}, title = {{{Spectroscopic and Microscopic Investigations of Degradation Processes in Polymer Surface-Near Regions During the Deposition of SiOx Films}}}, doi = {{10.1002/ppap.201500085}}, year = {{2015}}, } @article{22583, author = {{Schröder, Daniel and Burhenn, Sebastian and de los Arcos de Pedro, Maria Teresa and Schulz-von der Gathen, Volker}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, title = {{{Characteristics of a propagating, self-pulsing, constricted ‘γ-mode-like’ discharge}}}, doi = {{10.1088/0022-3727/48/5/055206}}, year = {{2015}}, } @article{22581, author = {{Marcak, Adrian and Corbella, Carles and de los Arcos de Pedro, Maria Teresa and von Keudell, Achim}}, issn = {{0034-6748}}, journal = {{Review of Scientific Instruments}}, title = {{{Note: Ion-induced secondary electron emission from oxidized metal surfaces measured in a particle beam reactor}}}, doi = {{10.1063/1.4932309}}, year = {{2015}}, } @article{24112, author = {{Niendorf, Thomas and Brenne, Florian and Hoyer, Kay-Peter and Schwarze, Dieter and Schaper, Mirko and Grothe, Richard and Wiesener, Markus and Grundmeier, Guido and Maier, Hans Jürgen}}, issn = {{1073-5623}}, journal = {{Metallurgical and Materials Transactions A}}, pages = {{2829--2833}}, title = {{{Processing of New Materials by Additive Manufacturing: Iron-Based Alloys Containing Silver for Biomedical Applications}}}, doi = {{10.1007/s11661-015-2932-2}}, year = {{2015}}, } @article{62811, abstract = {{The photo-conversion efficiency and stability of back-illuminated dye sensitised solar cells with titanium foil based photoanodes are enhanced by a simple nitric acid treatment through which the foil is passivated. This treatment changes the morphology of the titanium foil and increases its electrochemical double layer capacitance.}}, author = {{Linnemann, Julia and Giorgio, J. and Wagner, K. and Mathieson, G. and Wallace, G. G. and Officer, D. L.}}, issn = {{2050-7488}}, journal = {{Journal of Materials Chemistry A}}, keywords = {{dye sensitized solar cells, DSSCs}}, number = {{7}}, pages = {{3266--3270}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{A simple one step process for enhancement of titanium foil dye sensitised solar cell anodes}}}, doi = {{10.1039/c4ta05407e}}, volume = {{3}}, year = {{2015}}, } @article{20944, abstract = {{Joining metals using electrochemical support (ECUF) is a new process for cold pressure welding sheets and parts. This new process is based on an electrochemical in-line surface treatment followed by incremental pilger rolling. The ECUF process intends to cold pressure weld materials under optimized conditions. Oxide layers on metal surfaces are known to inhibit the formation of cold pressure welds. The in-line electrochemical treatment will be used to remove these surface oxides for specific engineering metals and alloys. Hence, an improved pressure weld formation at lower forces and smaller reduction ratios is expected for the electrochemically treated surfaces. Using a more flexible pressure welding process, the number of applications could be greatly improved. First tests with copper were performed to analyse the efficiency of the proposed electrochemical surface treatments. Two electrochemical treatments, the cathodic oxide-reduction and cyclovoltammetric oxide-reduction, were compared with conventional treatments (degreasing and scratch brushing) regarding their influence on the cold pressure welding process of copper. The weld strength of lap welds has been investigated as well as the necessary reduction threshold to form a weld. It was found that the electrochemical oxide reduction resulted in higher weld strength. The results of scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDX) indicate that surface oxides were successfully removed by the electrochemical surface treatments. (C) 2014 Elsevier B.V. All rights reserved.}}, author = {{Ebbert, Christoph and Schmidt, H. C. and Rodman, D. and Nuernberger, F. and Homberg, W. and Maier, H. J. and Grundmeier, Guido}}, issn = {{0924-0136}}, journal = {{JOURNAL OF MATERIALS PROCESSING TECHNOLOGY}}, number = {{10}}, pages = {{2179--2187}}, title = {{{Joining with electrochemical support (ECUF): Cold pressure welding of copper}}}, doi = {{10.1016/j.jmatprotec.2014.04.015}}, volume = {{214}}, year = {{2014}}, } @article{23637, author = {{Steinrück, Hans-Georg and Schiener, Andreas and Schindler, Torben and Will, Johannes and Magerl, Andreas and Konovalov, Oleg and Li Destri, Giovanni and Seeck, Oliver H. and Mezger, Markus and Haddad, Julia and Deutsch, Moshe and Checco, Antonio and Ocko, Benjamin M.}}, issn = {{1936-0851}}, journal = {{ACS Nano}}, pages = {{12676--12681}}, title = {{{Nanoscale Structure of Si/SiO2/Organics Interfaces}}}, doi = {{10.1021/nn5056223}}, volume = {{8}}, year = {{2014}}, } @article{23638, author = {{Khassanov, Artoem and Schmaltz, Thomas and Steinrück, Hans-Georg and Magerl, Andreas and Hirsch, Andreas and Halik, Marcus}}, issn = {{2196-7350}}, journal = {{Advanced Materials Interfaces}}, pages = {{1400238}}, title = {{{Interface Engineering of Molecular Charge Storage Dielectric Layers for Organic Thin-Film Memory Transistors}}}, doi = {{10.1002/admi.201400238}}, volume = {{1}}, year = {{2014}}, }