pH-regulated surface properties and pH-reversible micelle transition of a zwitterionic gemini surfactant in aqueous solution

2016 ◽  
Vol 18 (47) ◽  
pp. 32192-32197 ◽  
Author(s):  
Hongsheng Lu ◽  
Cunchuan Zheng ◽  
Miao Xue ◽  
Zhiyu Huang
Keyword(s):  
Aqueous Solution ◽  
Surface Properties ◽  
Ammonium Chloride ◽  
Gemini Surfactant

A zwitterionic gemini surfactant, called 2,2′-(1,4-phenylenebis(oxy))bis(N,N-dimethyl-N-carboxyethyl)-N-(alkylamide propyl) ammonium chloride(C14–B–C14), was synthesized successfully.

Notizen:Phosphorescence Decay in Thallium-Doped Ammonium Chloride

1978 ◽  
Vol 33 (10) ◽  
pp. 1241-1242 ◽  
Author(s):  
S. Chaudhari ◽  
T. R. Joshi ◽  
R. V. Joshi
Keyword(s):  
Aqueous Solution ◽  
Ammonium Chloride ◽  
Mechanical Treatment ◽  
Room Temperature ◽  
Host Lattice ◽  
Luminescence Decay ◽  
Decay Rates ◽  
Negative Ion ◽  
Ultraviolet Emission ◽  
Near Ultraviolet

Abstract The phosphorescence decay rates of thallium-doped ammonium chloride (NH4Cl:Tl) phosphors, prepared by crystallization from aqueous solution, have been studied at room temperature for near-ultraviolet emission. The effects of impurity concentration as well as thermal and/or mechanical treatment on the decay rates have been examined. Phosphorescence centres consisting of a Tl+ion and a nearby negative ion vacancy are suggested to be responsible for the observed luminescence decay. The changes in the decay characteristics after pretreatments are explained on the basis of the location of the centres in normal and distorted regions of the host lattice.

Effects of Surface Properties and Solvent PH Values on the Adsorption/Desorption Abilities of Mesoporous SBA-15 to Methylene Blue Molecules

2012 ◽  
Vol 518-523 ◽  
pp. 352-355
Author(s):  
Hui Liu ◽  
Hong Liang Li ◽  
Meng Xue Wang ◽  
Jing Jing Sang ◽  
Xiu Song Zhao
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Surface Properties ◽  
Weak Base ◽  
Adsorption Ability ◽  
Ph Values ◽  
Model Molecule ◽  
Adsorption Desorption

Methylene blue (MB) was used as model molecule to investigate the effects of surface properties and solvent pH values on the adsorption and desorption (or release) behaviors of mesoporous SBA-15 materials. It was found that the treatment of SBA-15 with a pH 7.8 aqueous solution can enhance the adsorption rate and capacity in comparison with the pristine SBA-15. The effect of pH values on MB releasing from the weak base treated SBA-15 and the pristine one have been studied and been compared in pH values range from 0.5 to 7.0. Both of them showed a maximum releasing rate at about pH 2 and all of the treated SBA-15 samples showed a higher releasing quantity than the pristine ones. The influence mechanisms of base treatment on the adsorption ability and that of pH values on the releasing properties of SBA-15 samples have been analyzed and been discussed based on the composition, the morphology, the surface area and pore size distribution and adsorption/desorption measurements.

scholarly journals Structure and Surface Properties of Gemini Surfactant

2004 ◽  
Vol 40 (10) ◽  
pp. 441-445
Author(s):  
Ｙｏｈｊｉ ＮＡＫＡＴＳＵＪＩ
Keyword(s):  
Surface Properties ◽  
Gemini Surfactant

Synthesis and Aggregation of Novel Sugar‐Based Gemini Surfactant with a N, N′‐Acetylethylenediamine Spacer in Aqueous Solution

2020 ◽  
Vol 23 (4) ◽  
pp. 697-703
Author(s):  
Ruijuan Wang ◽  
Ruihua WanYan ◽  
Shuo Yang ◽  
Dong Wang ◽  
Zhigang Yin
Keyword(s):  
Aqueous Solution ◽  
Gemini Surfactant

scholarly journals Effect of Temperature on the Surface Properties of Aqueous Solution of Arachidonic Acid.

1993 ◽  
Vol 41 (1) ◽  
pp. 6-11 ◽  
Author(s):  
Shoko YOKOYAMA ◽  
Junko OBATA ◽  
Tadao JUJIE ◽  
Masayuki NAKAGAKI
Keyword(s):  
Aqueous Solution ◽  
Arachidonic Acid ◽  
Surface Properties ◽  
Effect Of Temperature
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