نتایج جستجو برای: combined adsorption

تعداد نتایج: 429519  

Journal: :Iranian Journal of Environmental Health Science & Engineering 2013

2013
Yongchao Li Hongpu Ma Bozhi Ren Tielong Li

Core-shell silica-coated Fe(0) nanoparticles (Fe@SiO2) were prepared in one-step synthesis by aqueous reduction combined with modified Stöber method. The as-prepared Fe@SiO2 were then used for simultaneous removal of Cr(VI) and Cd(II) from aqueous solution. Batch tests indicated that Fe@SiO2 exhibited high removal capacity toward Cr(VI) and Cd(II). Cr(VI) was removed by Fe@SiO2 through reductio...

Journal: :Physical chemistry chemical physics : PCCP 2015
A Martin-Calvo J J Gutiérrez-Sevillano J B Parra C O Ania S Calero

We provide transferable force fields for oxygen, nitrogen, and carbon monoxide that are able to reproduce experimental adsorption in both pure silica and alumino-substituted zeolites at cryogenic and high temperatures. The force field parameters can be combined with those previously reported for carbon dioxide, methane, and argon, opening the possibility for studying mixtures of interest contai...

Journal: :Physical review letters 2014
Jianmin Tao Andrew M Rappe

van der Waals (vdW) interactions between particles and surfaces are critical for the study of physical adsorption. In this work, we develop a method to calculate the leading- and higher-order coefficients, describing the dependence of vdW interaction on height above the surface. We find that the proposed method can produce the vdW coefficients for atoms on surfaces of metals and semiconductors,...

Journal: :Physical chemistry chemical physics : PCCP 2015
A Racis L Jurczyszyn M Bazarnik W Koczorowski A Wykrota R Czajka M W Radny

A combined theoretical and experimental study on the adsorption of an isolated benzonitrile molecule on the Si(001) surface, followed by the adsorption of Al (group III), Pb (carbon group) and Ag (transition metal) is presented. It is shown that two new adsorption sites with enhanced reactivity are formed on the surface in the vicinity of the pre-adsorbed molecule. This is evidenced by the incr...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Qiong Jia Tomoko Matoba Syouhei Nishihama Kazuharu Yoshizuka

A urinary glucose assay has been investigated, employing a micro flow injection analysis (microFIA) combined with a separation technique of glucose from the analyte. The adsorption part using activated alumina for the glucose in the analyte can be successively integrated onto a microFI chip. The selective adsorption-desorption of glucose in the artificial urine can progress on the adsorption pa...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2016
Chi M Phan Cuong V Nguyen Hiromichi Nakahara Osamu Shibata Thanh V Nguyen

The ionic state of an adsorbed gemini surfactant at the air/water interface was investigated using a combination of surface potential and surface tension data. The combined model was developed and successfully described the experimental data. The results verified the existence of three ionic states of the gemini surfactant in the interfacial zone. Furthermore, the model can quantify the adsorbe...

Journal: :Journal of the American Chemical Society 2007
Willi Auwärter Florian Klappenberger Alexander Weber-Bargioni Agustin Schiffrin Thomas Strunskus Christof Wöll Yan Pennec Andreas Riemann Johannes V Barth

We present a combined low-temperature scanning tunneling microscopy and near-edge X-ray adsorption fine structure study on the interaction of tetrapyridyl-porphyrin (TPyP) molecules with a Cu(111) surface. A novel approach using data from complementary experimental techniques and charge density calculations allows us to determine the adsorption geometry of TPyP on Cu(111). The molecules are cen...

2013
VAIVA KRUNGLEVICIUTE ALDO MIGONE

Submitted for the MAR13 Meeting of The American Physical Society Experimental study of Ar-CH4 gas mixture adsorption over exfoliated graphite: kinetic reversal of adsorption selectivity1 MATIAS RAFTI, Instituto de Investigaciones Fisicoqúımicas Teoricas y Aplicadas, (INIFTACONICET), Universidad Nacional de La Plata, VAIVA KRUNGLEVICIUTE2, ALDO MIGONE, Southern Illinois University Carbondale — A...

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