scholarly journals Contaminant-mobilizing capability of fullerene nanoparticles (nC60): Effect of solvent-exchange process innC60formation

2012 ◽  
Vol 32 (2) ◽  
pp. 329-336 ◽  
Author(s):  
Lilin Wang ◽  
John D. Fortner ◽  
Lei Hou ◽  
Chengdong Zhang ◽  
Amy T. Kan ◽  
...  
Keyword(s):  
Exchange Process ◽  
Solvent Exchange ◽  
Effect Of Solvent ◽  
Fullerene Nanoparticles

scholarly journals Solvent-exchange process in MOF ultrathin films and its effect on CO2 and methanol adsorption

2021 ◽  
Vol 590 ◽  
pp. 72-81
Author(s):  
M.A. Andrés ◽  
P. Fontaine ◽  
M. Goldmann ◽  
C. Serre ◽  
O. Roubeau ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Exchange Process ◽  
Solvent Exchange ◽  
Methanol Adsorption

The development of a dense gas solvent exchange process for the impregnation of pharmaceuticals into porous chitosan

2010 ◽  
Vol 391 (1-2) ◽  
pp. 187-196 ◽  
Author(s):  
Chengdong Ji ◽  
Angela Barrett ◽  
Laura A. Poole-Warren ◽  
Neil R. Foster ◽  
Fariba Dehghani
Keyword(s):  
Exchange Process ◽  
Solvent Exchange ◽  
Dense Gas ◽  
Porous Chitosan

Sol-gel-derived glass scaffold with high pore interconnectivity and enhanced bioactivity

2009 ◽  
Vol 24 (12) ◽  
pp. 3495-3502 ◽  
Author(s):  
Ana C. Marques ◽  
Rui M. Almeida ◽  
Amath Thiema ◽  
Shaojie Wang ◽  
Matthias Falk ◽  
...  
Keyword(s):  
Exchange Process ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Three Dimensional ◽  
Average Diameter ◽  
Solvent Exchange ◽  
Sol Gel Transition ◽  
The One

We report on the preparation of a bioactive CaO–SiO2 monolithic scaffold with interconnected bimodal nanomacro porosity, which simulates the morphology of a natural trabecular bone, by a newly developed modified sol-gel process. This method inherently creates nanopores, whose average diameter can be tailored to approximately 5–20 nm by solvent exchange. To achieve interconnected macroporosity (pores ∼5–300 μm in size), a polymer [poly(ethylene oxide)] is added, which causes phase separation simultaneously with the sol-gel transition. High-resolution scanning electron microscopy and mercury intrusion porosimetry demonstrate a high degree of three-dimensional interconnectivity and sharp distributions of pore size. In vitro bioactivity tests in simulated body fluid (SBF) show bioactivity of the material after soaking for approximately 5 h, as verified by the formation of a hydroxyapatite layer deep into the scaffold structure. Analysis of the SBF after the reaction indicates the dissolution of the samples, another desired feature of temporary scaffolds for bone regeneration. MG63 osteoblast-like cells seeded on our sol-gel glass samples responded better to samples with nanopores enlarged by a solvent exchange process than to the one with normal nanopores. Thus, the benefits of the high surface area achieved by sol-gel and solvent exchange procedures are most clearly demonstrated for the first time.

Effect of solvent exchange on the pore structure and dissolution behavior of cellulose

2006 ◽  
Vol 103 (6) ◽  
pp. 3976-3984 ◽  
Author(s):  
D. Ishii ◽  
Y. Kanazawa ◽  
D. Tatsumi ◽  
T. Matsumoto
Keyword(s):  
Pore Structure ◽  
Dissolution Behavior ◽  
Solvent Exchange ◽  
Effect Of Solvent

Processing and Properties of Amorphous Manganese Dioxide Formed by Sol-Gel Procedures

1998 ◽  
Vol 548 ◽  
Author(s):  
Jun John Xu ◽  
Stefano Passerini ◽  
Boone B. Owens ◽  
William H. Smyrl
Keyword(s):  
Water Content ◽  
Manganese Dioxide ◽  
Exchange Process ◽  
Sol Gel ◽  
Cycling Performance ◽  
Lithium Intercalation ◽  
Solvent Exchange ◽  
Preliminary Results ◽  
Composition And Structure ◽  
Different Temperatures

ABSTRACTSol-gel derived amorphous manganese dioxide (a-MnO2) showed extremely high reversible lithium intercalation capacity. The composition and structure of the material were modified by heating at different temperatures. Cycling performance of the modified samples suggests that lowering the water content in the material is beneficial, while introducing crystallinity is detrimental, to its cyclability. A novel double-solvent-exchange process was tried for the processing of the material. Preliminary results indicated significant improvement in the reversibility of the insertion/release cycles.

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