Victoria Puchol

University of Valencia, Valenza, Valencia, Spain

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Publications (3)20.32 Total impact

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    ABSTRACT: Knowing the affinity of boron aqueous species for cis-diol organic groups, five different hybrid materials have been prepared by anchoring glucose groups onto the surface of silica matrices with a different surface topology: UVM-7 bimodal mesoporous silica, UVM-11 unimodal non-templated mesoporous silica, commercial silica fume and two silica xerogels with pores within the mesoporous range (13–50 nm). After optimizing the experimental conditions, a comparison was made of the boron adsorption capacities in water. The relationship of the structural and functionalization parameters is discussed and the importance of the surface topology in the final adsorption behaviour is revealed. Hence, despite the UVM-7 based material being the best boron adsorbent, the solid based on one of the xerogels is seen to be a good candidate for preparing low-cost boron adsorbents.
    Journal of Materials Chemistry 11/2012; 22(48):25362-25372. DOI:10.1039/C2JM32819D · 7.44 Impact Factor
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    ABSTRACT: Both bulk and mesoporous silica nanoparticles can be obtained in the form of granular aggregates using chitosan flakes as additive under very soft biomimetic reaction conditions.
    Chemical Communications 06/2009; DOI:10.1039/b821308a · 6.72 Impact Factor
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    ABSTRACT: Ordered macroporous–mesoporous carbonaceous materials were produced as a direct replica of the Thalassiosira pseudonana diatom by infiltration of the skeleton with furfuryl alcohol. The final carbon-rich material preserves the macropores of the diatom acting as bio-template and new hierarchical macro–mesopores appears as the silica is eliminated through chemical etching. The final solid can be described as an organized array of carbon macrotubes. In order to understand the progressive silica etching and the subsequent effect on the final carbon material, different etching reagents have been used. Moreover, the similar pore topology of T. pseudonana and the well known MCM-41 mesoporous silica (hexagonal ordered arrays of non-interconnected pores), allowed us to consider this system as a micrometric model to understand in 3-D the carbon replication of MCM-41 silicas.
    Carbon 02/2008; 46(2):297-304. DOI:10.1016/j.carbon.2007.11.017 · 6.16 Impact Factor