X-ray photoelectron spectroscopy studies on adsorption of amino acids from aqueous solutions onto oxidised titanium surfaces

2001 ◽  
Vol 121 (7) ◽  
pp. 403-410 ◽  
Author(s):  
M. Schmidt
Keyword(s):  
Amino Acids ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Titanium Surfaces ◽  
Spectroscopy Studies

scholarly journals The Fermi Level as an Energy Reference in Liquid Jet X-ray Photoelectron Spectroscopy Studies of Aqueous Solutions  

2021 ◽  
Author(s):  
Lucia Pérez Ramírez ◽  
Anthony Boucly ◽  
Florent Saudrais ◽  
F. Bournel ◽  
Jean-Jacques Gallet ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Photoemission Spectroscopy ◽  
Liquid Jet ◽  
X Ray ◽  
Invaluable Tool ◽  
Structure Of Aqueous Solutions ◽  
Spectroscopy Studies ◽  
Photocatalytic Processes

To advance an understanding of key electrochemical and photocatalytic processes that depend on the electronic structure of aqueous solutions, X-ray photoemission spectroscopy has become an invaluable tool, especially when practiced...

scholarly journals The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent

2020 ◽  
Author(s):  
Geethanjali Gopakumar ◽  
Isaak Unger ◽  
Clara-Magdalena Saak ◽  
Gunnar Öhrwall ◽  
Arnaldo Naves de Brito ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Inorganic Ions ◽  
X Ray ◽  
Ph Dependent

The manuscript based on X-ray photoelectron spectroscopy on aqueous solutions containing KCl and different amino acids. Our analysis suggests that the presence of the inorganic ions at the surface of the liquid is strongly dependent on the pH of the solution and the type of amino acid.

scholarly journals The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent

2020 ◽  
Author(s):  
Geethanjali Gopakumar ◽  
Isaak Unger ◽  
Clara-Magdalena Saak ◽  
Gunnar Öhrwall ◽  
Arnaldo Naves de Brito ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Inorganic Ions ◽  
X Ray ◽  
Ph Dependent

The manuscript based on X-ray photoelectron spectroscopy on aqueous solutions containing KCl and different amino acids. Our analysis suggests that the presence of the inorganic ions at the surface of the liquid is strongly dependent on the pH of the solution and the type of amino acid.

scholarly journals Fabrication of Carboxymethylcellulose/Metal-Organic Framework Beads for Removal of Pb(II) from Aqueous Solution

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 942 ◽  
Author(s):  
Huo-Xi Jin ◽  
Hong Xu ◽  
Nan Wang ◽  
Li-Ye Yang ◽  
Yang-Guang Wang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Photoelectron Spectroscopy ◽  
Langmuir Isotherm ◽  
Adsorption Equilibrium ◽  
Isotherm Model ◽  
Maximum Adsorption Capacity ◽  
X Ray ◽  
Metal Organic ◽  
Langmuir Isotherm Model

The ability to remove toxic heavy metals, such as Pb(II), from the environment is an important objective from both human-health and ecological perspectives. Herein, we describe the fabrication of a novel carboxymethylcellulose-coated metal organic material (MOF-5–CMC) adsorbent that removed lead ions from aqueous solutions. The adsorption material was characterized by Fourier-transform infrared spectroscopy, X-ray diffractometry, scanning electron microscopy, and X-ray photoelectron spectroscopy. We studied the functions of the contact time, pH, the original concentration of the Pb(II) solution, and adsorption temperature on adsorption capacity. MOF-5–CMC beads exhibit good adsorption performance; the maximum adsorption capacity obtained from the Langmuir isotherm-model is 322.58 mg/g, and the adsorption equilibrium was reached in 120 min at a concentration of 300 mg/L. The adsorption kinetics is well described by pseudo-second-order kinetics, and the adsorption equilibrium data are well fitted to the Langmuir isotherm model (R2 = 0.988). Thermodynamics experiments indicate that the adsorption process is both spontaneous and endothermic. In addition, the adsorbent is reusable. We conclude that MOF-5–CMC is a good adsorbent that can be used to remove Pb(II) from aqueous solutions.

Sign in / Sign up

Export Citation Format

Share Document