Publications associées à Biogenic silica

Atomic Description of the Interface between Silica and Alumina in Aluminosilicates through Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy and First-Principles Calculations

David Lyndon Emsley, Aaron James Rossini

Despite the widespread use of amorphous aluminosilicates (ASA) in various industrial catalysts, the nature of the interface between silica and alumina and the atomic structure of the catalytically active sites are still subject to debate. Here, by the use ...

American Chemical Society2015

A new quantification method based on SEM-EDS to assess fly ash composition and study the reaction of its individual components in hydrating cement paste

Karen Scrivener, Cyrille Dunant, Mohsen Ben Haha, Pawel Tadeusz Durdzinski

Calcareous fly ashes are high-potential reactive residues for blended cements, but their qualification and use in concrete are hindered by heterogeneity and variability. Current characterization often fails to identify the dominant, most reactive, amorphou ...

Pergamon-Elsevier Science Ltd2015

Morphology, microstructure, crystallography, and chemistry of distinct CaCO3 deposits formed by early recruits of the scleractinian coral Pocillopora damicornis

Anders Meibom, Duncan Thomas Lindsay Alexander, Jaroslaw Hubert Stolarski, Melany Melissa Gilis

ABSTRACT Scleractinian corals begin their biomineralization process shortly after larval settlement with the formation of calcium carbonate (CaCO3) structures at the interface between the larval tissues and the substrate. The newly settled larvae exert var ...

Wiley-Blackwell2015

Examining the effects of anthropogenic emissions on isoprene-derived secondary organic aerosol formation during the 2013 Southern Oxidant and Aerosol Study (SOAS) at the Look Rock, Tennessee ground site

Athanasios Nenes, Xuan Li

A suite of offline and real-time gas- and particle-phase measurements was deployed at Look Rock, Tennessee (TN), during the 2013 Southern Oxidant and Aerosol Study (SOAS) to examine the effects of anthropogenic emissions on isoprene-derived secondary organ ...

Copernicus GmbH2015

Polymer Adsorption on Iron Oxide Nanoparticles for One-Step Amino-Functionalized Silica Encapsulation

Heinrich Hofmann, Lionel André Maurizi

This paper presents an original method to obtain, in one step, core/shell nanoparticles grafted covalently with polymer and functionalized with amino groups. By combining polyvinyl alcohol (PVA) and silica precursors, we were able to obtain silica-coated a ...

Hindawi Publishing Corporation2015

Controlling Mesopore Size and Processability of Transparent Enzyme-Loaded Silica Films for Biosensing Applications

Heinrich Hofmann, Oswaldo Javier Pérez Anguiano, Bernard Wenger, Raphaël Pugin, Emmanuel Scolan

Silica-based nanoporous thin films including large mesopores are relevant as enzyme supports for applications in biosensing. The diffusion and immobilization of large biomolecules such as enzymes in such porous films require the presence of large mesopores ...

Amer Chemical Soc2015

Alkane Metathesis with the Tantalum Methylidene [( SiO)Ta(=CH2)Me-2]/[( SiO)(2)Ta(=CH2)Me] Generated from Well-Defined Surface Organometallic Complex [( SiO)(TaMe4)-Me-V]

David Lyndon Emsley, Yin Chen

By grafting TaMe5 on Aerosil(700), a stable, well-defined, silica-supported tetramethyl tantalum(V) complex, [( SiO)TaMe4], is obtained on the silica surface. After thermal treatment at 150 degrees C, the complex is transformed into two surface tantalum me ...

Amer Chemical Soc2015

Silica-surface reorganization during organotin grafting evidenced by Sn-119 DNP SENS: a tandem reaction of gem-silanols and strained siloxane bridges

David Lyndon Emsley, Aaron James Rossini

Grafting reactive molecular complexes on dehydroxylated amorphous silica is a strategy to develop ``single-site'' heterogeneous catalysts. In general, only the reactivity of isolated silanols is invoked for silica dehydroxylated at 700 degrees C ([SiO2-700 ...

2014

Observations of continental biogenic impacts on marine aerosol and clouds off the coast of California

Athanasios Nenes, Zheng Wang

During the 2011 Eastern Pacific Emitted Aerosol Cloud Experiment (E-PEACE) and 2013 Nucleation in California Experiment (NiCE) field campaigns, a predominantly organic aerosol (> 85% by mass) was observed in the free troposphere over marine stratocumulus o ...

Wiley-Blackwell2014

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Biogenic silica

Atomic Description of the Interface between Silica and Alumina in Aluminosilicates through Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy and First-Principles Calculations

A new quantification method based on SEM-EDS to assess fly ash composition and study the reaction of its individual components in hydrating cement paste

Morphology, microstructure, crystallography, and chemistry of distinct CaCO3 deposits formed by early recruits of the scleractinian coral Pocillopora damicornis

Examining the effects of anthropogenic emissions on isoprene-derived secondary organic aerosol formation during the 2013 Southern Oxidant and Aerosol Study (SOAS) at the Look Rock, Tennessee ground site

Polymer Adsorption on Iron Oxide Nanoparticles for One-Step Amino-Functionalized Silica Encapsulation

Controlling Mesopore Size and Processability of Transparent Enzyme-Loaded Silica Films for Biosensing Applications

Deep-UV fluorescence lifetime imaging microscopy

Alkane Metathesis with the Tantalum Methylidene [( SiO)Ta(=CH2)Me-2]/[( SiO)(2)Ta(=CH2)Me] Generated from Well-Defined Surface Organometallic Complex [( SiO)(TaMe4)-Me-V]

Silica-surface reorganization during organotin grafting evidenced by Sn-119 DNP SENS: a tandem reaction of gem-silanols and strained siloxane bridges

Observations of continental biogenic impacts on marine aerosol and clouds off the coast of California

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Chattez avec Graph Search

Atomic Description of the Interface between Silica and Alumina in Aluminosilicates through Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy and First-Principles Calculations

A new quantification method based on SEM-EDS to assess fly ash composition and study the reaction of its individual components in hydrating cement paste

Alkane Metathesis with the Tantalum Methylidene [( SiO)Ta(=CH2)Me-2]/[( SiO)(2)Ta(=CH2)Me] Generated from Well-Defined Surface Organometallic Complex [( SiO)(TaMe4)-Me-V]

Examining the effects of anthropogenic emissions on isoprene-derived secondary organic aerosol formation during the 2013 Southern Oxidant and Aerosol Study (SOAS) at the Look Rock, Tennessee ground site

Silica-surface reorganization during organotin grafting evidenced by Sn-119 DNP SENS: a tandem reaction of gem-silanols and strained siloxane bridges

Polymer Adsorption on Iron Oxide Nanoparticles for One-Step Amino-Functionalized Silica Encapsulation

Observations of continental biogenic impacts on marine aerosol and clouds off the coast of California

Deep-UV fluorescence lifetime imaging microscopy

Morphology, microstructure, crystallography, and chemistry of distinct CaCO3 deposits formed by early recruits of the scleractinian coral Pocillopora damicornis