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2,794 Newest Publications about the topic solution

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Influence of Solution Volume on the Dissolution Rate of Silicon Dioxide in Hydrofluoric Acid

14-11-2014 | Boris Shvartsev, Danny Gelman, Ilia Komissarov, Alon Epshtein, David Starosvetsky, Yair Ein‐Eli, ChemPhysChem, 2014

Abstract Experimental data and modeling of the dissolution of various Si/SiO2 thermal coatings in different volumes of hydrofluoric acid (HF) are reported. The rates of SiO2‐film dissolution, measured by means of various electrochemical techniques, and alteration in HF activity depend on the ...

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Molecules, Vol. 19, Pages 18705-18720: Removing Tannins from Medicinal Plant Extracts Using an Alkaline Ethanol Precipitation Process: A Case Study of Danshen Injection

14-11-2014 | Gong, Xingchu ; Li, Yao ; Qu, Haibin, Molecules, 2014

The alkaline ethanol precipitation process is investigated as an example of a technique for the removal of tannins extracted from Salviae miltiorrhizae Radix et Rhizoma for the manufacture of Danshen injection. More than 90% of the tannins can be removed. However, the recoveries of danshensu, ...

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Deciphering Ligands’ Interaction with Cu and Cu2O Nanocrystals Surface by NMR Solution Tools

13-11-2014 | Arnaud Glaria, Jérémy Cure, Kilian Piettre, Yannick Coppel, Cédric‐Olivier Turrin, Bruno Chaudret, Pierre Fau, Chemistry - A European Journal, 2014

Abstract The hydrogenolysis of [Cu2{(iPrN)2(CCH3)}2] in the presence of hexadecylamine (HDA) or tetradecylphosphonic acid (TDPA) in toluene leads to 6–9 nm copper nanocrystals. Solution NMR spectroscopy has been used to describe the nanoparticle surface chemistry during the dynamic phenomenon ...

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Highly Stable Complexes of Divalent Metal Ions (Mg2+, Ca2+, Cu2+, Zn2+, Cd2+, and Pb2+) with a Dota‐Like Ligand Containing a Picolinate Pendant

13-11-2014 | Martín Regueiro‐Figueroa, Erika Ruscsák, Laura Fra, Gyula Tircsó, Imre Tóth, Andrés de Blas, Teresa Rodríguez‐Blas, ..., European Journal of Inorganic Chemistry, 2014

Abstract The stability constants of complexes of the macrocyclic ligand do3a‐pic4– (H4do3a‐pic = 2,2′,2″‐{10‐[(6‐carboxypyridin‐2‐yl)methyl]‐1,4,7,10‐tetraazacyclododecane‐1,4,7‐triyl}triacetic acid) with several divalent metal ions (Pb2+, Cd2+, Zn2+, Cu2+, Ca2+, and Mg2+) have been determined ...

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Colloidal Stability of Citrate and Mercaptoacetic Acid Capped Gold Nanoparticles upon Lyophilization: Effect of Capping Ligand Attachment and Type of Cryoprotectants

12-11-2014 | Alaaldin M. Alkilany; Samer R. Abulateefeh; Kayla K. Mills; Alaa I. Bani Yaseen; Majd A. Hamaly; Hatim S. Alkhatib; ..., Langmuir, 2014

For various applications of gold nanotechnology, long-term nanoparticle stability in solution is a major challenge. Lyophilization (freeze–drying) is a widely used process to convert labile protein and various colloidal systems into powder for improved long-term stability. However, the ...

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Integrated Computational and Experimental Protocol for Understanding Rh(III) Speciation in Hydrochloric and Nitric Acid Solutions

12-11-2014 | Alex C. Samuels; Cherilynn A. Boele; Kevin T. Bennett; Sue B. Clark; Nathalie A. Wall; Aurora E. Clark, Inorganic Chemistry, 2014

Platinum group metals (PGMs), including rhodium, generated by the fission of 235U are present in significant quantities within spent nuclear fuel located on power generation sites in the United States, the amount of which is expected to exceed natural reserves by 2030. Yet, spent fuel raffinates ...

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Fast Kinetics of Thiolic Self-Assembled Monolayer Adsorption on Gold: Modeling and Confirmation by Protein Binding

12-11-2014 | Sasan Asiaei; Patricia Nieva; Mathilakath M. Vijayan, Journal of Physical Chemistry B, 2014

This study presents an improved kinetics for the formation of self-assembled monolayers (SAMs) of thiols on gold substrates. Based on predictions of a computational model developed to study the SAM growth kinetics, SAMs of 11-mercaptoinic acid and 1-octanethiol were successfully formed for the ...

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EXAFS Study of the Speciation of Protactinium(V) in Aqueous Hydrofluoric Acid Solutions

12-11-2014 | Stéphanie M. De Sio; Richard E. Wilson, Inorganic Chemistry, 2014

The speciation of protactinium(V) in hydrofluoric acid (HF) solutions was studied using X-ray absorption spectroscopy. Extended X-ray absorption fine structure measurements were performed on an aqueous solution of 0.05 M protactinium(V) with various HF concentrations ranging from 0.5 to 27 M in ...

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Density Functional Theory Study of the Oligomerization of Carboxylic Acids

12-11-2014 | Devis Di Tommaso; Ken L. Watson, Journal of Physical Chemistry A, 2014

We present a density functional theory [M06-2X/6-31+G(d,p)] study of the structures and free energies of formation of oligomers of four carboxylic acids (formic acid, acetic acid, tetrolic acid, and benzoic acid) in water, chloroform, and carbon tetrachloride. Solvation effects were treated using ...

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Blood‐derived compounds can efficiently prevent iron deficiency in the grapevine

11-11-2014 | S. López‐Rayo, M. Di Foggia, G. Bombai, F. Yunta, E. Rodrigues Moreira, G. Filippini, A. Pisi, A.D. Rombolà, Australian Journal of Grape and Wine Research, 2014

Abstract Background and Aims The present study investigated the effectiveness of bovine blood (BB)‐based products, compared with that of the widely used iron ethylenediaminedi‐(2‐hydroxyphenylacetic) acid (Fe‐EDDHA) synthetic chelate, in iron nutrition of grapevine graft combinations and ...

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