TY  - JOUR
A1  - Goebel, Ronald
A1  - Xie, Zai-Lai
A1  - Neumann, Mike
A1  - Günter, Christina
A1  - Loebbicke, Ruben
A1  - Kubo, Shiori
A1  - Titirici, Maria-Magdalena
A1  - Giordano, Cristina
A1  - Taubert, Andreas
T1  - Synthesis of mesoporous carbon/iron carbide hybrids with unusually high surface areas from the ionic liquid precursor [Bmim][FeCl4]
JF  - CrystEngComm
N2  - Mesoporous carbon/iron carbide hybrid materials with surface areas reaching 800 m(2) g(-1) were synthesized via an exotemplating route using monolithic mesoporous silica as template and the ionic liquid 1-butyl-3-methylimidazolium tetrachloridoferrate(III) [Bmim][FeCl4] as carbon and iron source. After heat treatment (750 degrees C under argon) of the [Bmim][FeCl4] precursor confined within the silica matrix, the silica exotemplate was removed with HF leaving the mesoporous C/Fe3C hybrid behind. The surface areas and the pore sizes depend on the exotemplate and the surface areas a significantly larger than any other surface area reported for C/Fe3C hybrid materials so far. The approach is thus a prototype for the synthesis of high-surface area iron carbide-based hybrid materials with potential application in catalysis.
Y1  - 2012
U6  - https://doi.org/10.1039/c2ce25064k
SN  - 1466-8033
VL  - 14
IS  - 15
SP  - 4946
EP  - 4951
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Neumann, Mike
A1  - Noeske, Robert
A1  - Taubert, Andreas
A1  - Tiersch, Brigitte
A1  - Strauch, Peter
T1  - Highly structured, biomorphous beta-SiC with high specific surface area from Equisetaceae
JF  - Journal of materials chemistry
N2  - Mesoporous, highly structured silicon carbide (beta-SiC) was synthesised from renewable plant materials (two Equisetaceae species) in a one-step carbothermal process at remarkably low temperatures down to 1200 degrees C. The SiC precursor is a silicon-carbon mixture with finely dispersed carbon prepared by pyrolysis of the organic plant matrix. Yields are 3 to 100% (omega(Si/Si) related to the silicon deposited in the plant material), depending on reaction temperature and time. IR spectroscopy, X-ray diffraction, and nitrogen sorption prove the formation of high-purity beta-SiC with minor inorganic impurities after purification and a high specific surface area of up to 660 m(2) g(-1). Scanning electron microscopy shows that the plant morphology is maintained in the final SiC. Sedimentation analysis finds a mean particle size (diameters d(50)) of 20 mu m.
Y1  - 2012
U6  - https://doi.org/10.1039/c2jm30253e
SN  - 0959-9428
VL  - 22
IS  - 18
SP  - 9046
EP  - 9051
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Taubert, Andreas
A1  - Stange, Franziska
A1  - Li, Zhonghao
A1  - Junginger, Mathias
A1  - Günter, Christina
A1  - Neumann, Mike
A1  - Friedrich, Alwin
T1  - CuO nanoparticles from the Strongly Hydrated Ionic Liquid Precursor (ILP) Tetrabutylammonium Hydroxide evaluation of the Ethanol Sensing Activity
JF  - ACS applied materials & interfaces
N2  - The sensing potential of CuO nanoparticles synthesized via. precipitation from a water/ionic liquid precursor (ILP) mixture was investigated. The particles have a moderate surface area of 66 m(2)/g after synthesis, which decreases upon thermal treatment to below 5 m(2)/g. Transmission electron microscopy confirms crystal growth upon annealing, likely due to sintering effects. The as-synthesized particles can be used for ethanol sensing. The respective sensors show fast response and recovery times of below 10 s and responses greater than 2.3 at 100 ppm of ethanol at 200 degrees C, which is higher than any CuO-based ethanol sensor described so far.
KW  - ionic liquids
KW  - ionic liquid precursors
KW  - tetrabutylammonium hydroxide
KW  - nanoparticles
KW  - CuO
KW  - gas sensing
Y1  - 2012
U6  - https://doi.org/10.1021/am201427q
SN  - 1944-8244
VL  - 4
IS  - 2
SP  - 791
EP  - 795
PB  - American Chemical Society
CY  - Washington
ER  -