Surface Studies on the Ionic Liquid 1-Ethyl-3-Methylimidazolium Ethylsulfate Using X-Ray Photoelectron Spectroscopy (XPS)

2006 ◽  
Vol 220 (10) ◽  
pp. 1439-1453 ◽  
Author(s):  
J. M. Gottfried ◽  
F. Maier ◽  
J. Rossa ◽  
D. Gerhard ◽  
P. S. Schulz ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Surface Studies ◽  
X Ray

Magnetic Nanoparticle Supported Ionic Liquid Phase Catalyst for Oxidation of Alcohols

2020 ◽  
Vol 73 (11) ◽  
pp. 1088
Author(s):  
Altafhusen Naikwade ◽  
Megha Jagadale ◽  
Dolly Kale ◽  
Gajanan Rashinkar
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Photoelectron Spectroscopy ◽  
Magnetic Nanoparticle ◽  
Analytical Techniques ◽  
X Ray ◽  
Supported Ionic Liquid ◽  
Transmission Electron ◽  
Oxidation Of Alcohols ◽  
Ft Ir

A new magnetic nanoparticle supported ionic liquid phase (SILP) catalyst containing perruthenate anions was prepared by a multistep procedure. The various analytical techniques such as FT-IR spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, thermogravimetric analysis, energy dispersive X-ray analysis, and vibrating sample magnetometer analysis ascertained the successful formation of catalyst. The performance of a magnetically retrievable SILP catalyst was evaluated in the selective oxidation of alcohols. The split test and leaching studies of the SILP catalyst confirmed its heterogeneous nature. In addition, the reusability potential of SILP catalyst was also investigated which revealed its robust activity up to six consecutive cycles.

Instrument combining x‐ray photoelectron spectroscopy and secondary ion mass spectrometry for surface studies

1979 ◽  
Vol 50 (11) ◽  
pp. 1386-1390 ◽  
Author(s):  
R. W. Hewitt ◽  
A. T. Shepard ◽  
W. E. Baitinger ◽  
N. Winograd ◽  
W. N. Delgass
Keyword(s):  
Mass Spectrometry ◽  
Photoelectron Spectroscopy ◽  
Secondary Ion Mass Spectrometry ◽  
Surface Studies ◽  
X Ray ◽  
Ion Mass Spectrometry ◽  
Secondary Ion

scholarly journals Kinetics of Highly Active TiO2 Microspheres Formation in a Presence of Ethylammonium Nitrate Ionic Liquid

2018 ◽  
Author(s):  
Anna Gołąbiewska ◽  
Micaela Checa-Suárez ◽  
Marta Paszkiewicz-Gawron ◽  
Wojciech Lisowski ◽  
Edyta Raczuk ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Surface Area ◽  
Photoelectron Spectroscopy ◽  
High Efficiency ◽  
Diffuse Reflectance Spectroscopy ◽  
Phenol Degradation ◽  
Bet Surface Area ◽  
Synthesis Time ◽  
X Ray ◽  
Highly Active

Spherical microparticles of TiO2 were synthesized by the ionic liquid-assisted solvothermal method at different reaction time (3, 6, 12 and 24h). The properties of the prepared photocatalysts were investigated by means of UV-vis diffuse-reflectance spectroscopy (DRS), BET surface area measurements, scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that the efficiency of phenol degradation was related with a time of the solvothermal synthesis as determined for TiO2_EAN(1:1)_24h sample. Microparticles of TiO2_EAN(1:1)_3h formed during the only 3h of synthesis time revealed really high photoactivity under visible irradiation – 75%. This value increased to 80% and 82% after 12h and 24h, respectively. The photoactivity increase was accompanied by the increase of the specific surface area thus pores size, as well as ability to absorb UV-vis irradiation. The high efficiency of phenol degradation of IL-TiO2 photocatalysts was ascribed to the interaction between the surface of TiO2 and ionic liquid components (carbon and nitrogen).

Synthesis of mesoporous nickel–titanium-trimesic acid inorganic–organic hybrid composite in ionic liquid microemulsions for adsorption of rhodamine B from aqueous solution

2020 ◽  
Vol 10 (2) ◽  
pp. 251-257
Author(s):  
Ranfeng Ye ◽  
Min Ni ◽  
Hao Chen ◽  
Shengqing Li
Keyword(s):  
Ionic Liquid ◽  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Nickel Titanium ◽  
Isotherm Models ◽  
X Ray ◽  
Organic Hybrid ◽  
Trimesic Acid

For the first time, mesoporous nickel–titanium-trimesic acid (NTT) inorganic–organic hybrid composite was synthesized in water-in-[Bmim]PF6 ionic liquid microemulsions using the trimesic acid (BTC) as the linker. The synthesized NTT was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) analysis, powder X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) methods, etc. Then, the isotherm and kinetic of adsorption were studied. The experimental data were well fitted with isotherm models of Langmuir and Freundlich (IMLF) at 298 K and 308 K and better fitted with the isotherm model of Langmuir (IML) at 318 K with the adsorption capacity of 662.212 μmol/g (maximum). The adsorption of rhodamine B (RhB) on NTT can be described by pseudo-second-order (PSO) kinetic model. This proposed method for synthesis of mesoporous NTT inorganic–organic hybrid composite is facile, environment-friendly and operated at room temperature, which could be applied to synthesis of other mesoporous inorganic–organic hybrid composites.

scholarly journals Cover Feature: Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy (ChemistryOpen 12/2019)

ChemistryOpen ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1362-1362 ◽  
Author(s):  
Francesco Greco ◽  
Sunghwan Shin ◽  
Federico J. Williams ◽  
Bettina S. J. Heller ◽  
Florian Maier ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Liquid Interfaces ◽  
X Ray

scholarly journals Graphene-Ionic Liquid Thin Film Nanolubricant

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 535 ◽  
Author(s):  
María-Dolores Avilés ◽  
Ramón Pamies ◽  
José Sanes ◽  
María-Dolores Bermúdez
Keyword(s):  
Ionic Liquid ◽  
Film Thickness ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Surface Damage ◽  
Thin Layers ◽  
Energy Dispersive Analysis ◽  
Lubricant Film Thickness ◽  
X Ray ◽  
Transmission Electron

Graphene (0.5 wt.%) was dispersed in the hydrophobic room-temperature ionic liquid 1-octyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide (IL) to obtain a new non-Newtonian (IL + G) nanolubricant. Thin layers of IL and (IL + G) lubricants were deposited on stainless steel disks by spin coating. The tribological performance of the new thin layers was compared with those of full fluid lubricants. Friction coefficients for neat IL were independent of lubricant film thickness. In contrast, for (IL + G) the reduction of film thickness not only afforded 40% reduction of the friction coefficient, but also prevented wear and surface damage. Results of surface profilometry, scanning and transmission electron microscopy (SEM and TEM), energy dispersive analysis (EDX), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were discussed.

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