NDLI: Positron annihilation and N<sub>2</sub> adsorption for nanopore determination in silica-polymer composites

Please wait, while we are loading the content...

A free-standing, hybrid TiO₂/K-OMS-2 hierarchical nanofibrous membrane with high photocatalytic activity for concurrent membrane filtration applications

Galvanic reaction based generation of electronically transparent corrugated Ag–Au nanoparticle thin films

Facile synthesis of large area porous Cu₂O as super hydrophobic yellow-red phosphors

Microfibrous entrapment of Ni/Al₂O₃ for dry reforming of methane: a demonstration on enhancement of carbon resistance and conversion

Nano-layered manganese oxides as low-cost, easily synthesized, environmentally friendly and efficient catalysts for epoxidation of olefins

Au–thymine, thymidine and thymidine 5′-monophosphate nanoparticles: chemical characterisation and cellular uptake studies into U87 cancer cells

In vitro conversion of chanoclavine-I aldehyde to the stereoisomers festuclavine and pyroclavine controlled by the second reduction step

Engineering of Brome mosaic virus for biomedical applications

Sol–gel prepared bismuth titanate for high temperature ultrasound transducers

The ohmic resistance effect for characterisation of carbon nanotube paste electrodes (CNTPEs)

Salts of 1-(chloromethyl)-1,1-dimethylhydrazine and ionic liquids

Anomalous permeation of the [P₅W₃₀O₁₁₀]¹⁵⁻ polyoxoanion in polyelectrolyte multilayer films

An investigation of heating rate effects on particle size and concentration: instruction for scale-up

A highly selective and dual responsive test paper sensor of Hg²⁺/Cr³⁺ for naked eye detection in neutral water

Functionalizing organic dye with cross-linked electrolyte-blocking shell as a new strategy for improving DSSC efficiency

Positron annihilation and N₂ adsorption for nanopore determination in silica-polymer composites

Capping induced morphology evolution of Rh nanostructures and their electrocatalytic studies

Photoinduced electron transfer in supramolecular complexes of a π-extended viologen with porphyrin monomer and dimer

Customised transition metal oxide nanoparticles for the controlled production of carbon nanostructures

Synthesis and structural characterization of novel visible photocatalyst Bi–TiO₂/SBA-15 and its photocatalytic performance

One-pot solvent-free synthesis of quinolines by C–H activation/C–C Bond formation catalyzed by recyclable iron(iii) triflate

Fluorescent organic–inorganic hybrid polyphosphazene microspheres for the trace detection of nitroaromatic explosives

Synthesis of 3,5-disubstituted pyrazoles via cyclocondensation of 1,2-allenic ketones with hydrazines: application to the synthesis of 5-(5-methyl-pyrazol-3-yl)-2′-deoxycytidine

Cyclodextrin fibers via polymer-free electrospinning

A straightforward click-approach towards pretubulysin-analogues

Core-shell Au–TiO₂ nanoarchitectures formed by pulsed laser deposition for enhanced efficiency in dye sensitized solar cells

Novel magnetic-separable and efficient Au/Fe–Al–O composite for the lactonization of 1,4-butanediol to γ-butyrolactone

Immobilization of ionic liquids in θ-zirconium phosphate for catalyzing the coupling of CO₂ and epoxides

Green controllable synthesis of silver nanomaterials on graphene oxide sheets via spontaneous reduction

Sol–gel synthesis of Au/N–TiO₂ composite for photocatalytic reduction of Cr(vi)

Electrical conductivity optimization in electrolyte-free fuel cells by single-component Ce_0.8Sm_0.2O_2-δ–Li_0.15Ni_0.45Zn_0.4 layer

Single molecule diffusion on hard, soft and fluid surfaces

A simple method for solving the voltage overshoots of LiFePO₄-based lithium-ion batteries with different capacity classes

Remotely addressable magnetic composite micropumps

An all perovskite direct methanol solid oxide fuel cell with high resistance to carbon formation at the anode

Tuning the bactericidal repertoire and potency of quinoline-based amphiphiles for enhanced killing of pathogenic bacteria

La_0.67Sr_0.33MnO₃ nanofibers for in situ, real-time, and stable high temperature oxygen sensing

Paper-based fluoroimmunoassay for rapid and sensitive detection of antigen

Universal protocol for grafting PCR primers onto various lab-on-a-chip substrates for solid-phase PCR

Osteogenesis imperfecta mutations lead to local tropocollagen unfolding and disruption of H-bond network

Non-photobleaching YAG:Ce nanoparticles for optical imaging with blue excitation

Heteroditopic p-tert-butyl thiacalix[4]arenes for creating supramolecular self-assembles by cascade or commutative mechanisms

Ammonium–crown ether based host–guest systems: N–H⋯O hydrogen bond directed guest inclusion featuring N–H donor functionalities in angular geometry

Structural characteristics and flammability of fire retarding EPDM/layered double hydroxide (LDH) nanocomposites

Kinetics of the formation of β-casein/tannin mixed micelles

Thienyl-substituted BODIPYs with strong visible light-absorption and long-lived triplet excited states as organic triplet sensitizers for triplet–triplet annihilation upconversion

Experimental and theoretical study of the degradation of malonamide extractant molecules under ionizing radiation

Palladium nanoshells coated with self-assembled monolayers and their catalytic properties

Polymer brushes assisted loading of high density CdS/CdSe quantum dots onto TiO₂ nanotubes and the resulting photoelectric performance

A quick and efficient route to substituted quinolines by electrophilic cyclization of 1-(2-aminoaryl)-2-yn-1-ols

Back cover

RSC Advances Vol - 2 Issue - 8

RSC Advances Vol - 2 Issue - 7

RSC Advances Vol - 2 Issue - 6

RSC Advances Vol - 2 Issue - 5

RSC Advances Vol - 2 Issue - 4

RSC Advances Vol -1

RSC Advances Vol -0

Positron annihilation and N₂ adsorption for nanopore determination in silica-polymer composites

Content Provider	Royal Society of Chemistry (RSC)
Author	Halasz, Istvan Kierys, Agnieszka Goworek, Jacek Dziadosz, Marek Zaleski, Radosław
Copyright Year	2012
Abstract	Silica has two different, fragmented and smooth, visual appearances when deposited onto porous Amberlite polymer substrate from TEOS at acidic and basic pH, respectively. The low temperature N2 adsorption isotherms on both materials seem to be a combination of Type 1 and Type 4 isotherms with H2 hysteresis, indicating the presence of both micro (D < 2 nm diameter) and meso (2 nm < D < 50 nm) pores. Their mesopore distributions, computed by both BJH and DFT methods, show maxima near D∼5 nm with a narrower pore size distribution range than the organic support alone. For comparison, pores were also tested by positron annihilation lifetime spectroscopy (PALS) which can scan the full micro to mezo size range in one measurement without cooling and using any adsorbate molecules. These PALS results indicated the presence of D∼0.5, 0.8 and 1.5 nm diameter micropores and an average D∼5 nm diameter mesopores in both the base and the acid set materials. When the organic substrate is burned out from the two differently made composites, the new adsorption isotherms, BET surface areas, and differently measured pore sizes became distinctly different both from each other and from those of the parent materials.
Starting Page	3729
Ending Page	3734
Page Count	6
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	2
Issue Number	9
Journal	RSC Advances
DOI	10.1039/c2ra20147j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	BET Mesoporous material Spectroscopy TEOS Amberlite Adsorption Polymer Hysteresis Positron
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Positron porosimetry study of mesoporous polymer–silica composites

Positron porosimetry study of mesoporous polymer–silica composites

Gold nanoparticle–mesoporous silica sheet composites with enhanced antibody adsorption capacity

What can positronium tell us about adsorption?

Studies on fiber reinforced polymer composites for biomedical applications by positron annihilation lifetime spectroscopy

Fabrication of polymer-modified monodisperse mesoporous carbon particles by template-based approach for drug delivery

Low-cost materials for boron adsorption from water

Silica-based hybrid microspheres: synthesis, characterization and wastewater treatment

Adsorption of Bismarck Brown R Dyes Using Mesoporous Silica MCM-48

Positron annihilation and N₂ adsorption for nanopore determination in silica-polymer composites

Similar Documents

Positron porosimetry study of mesoporous polymer–silica composites

Positron porosimetry study of mesoporous polymer–silica composites

Gold nanoparticle–mesoporous silica sheet composites with enhanced antibody adsorption capacity

What can positronium tell us about adsorption?

Studies on fiber reinforced polymer composites for biomedical applications by positron annihilation lifetime spectroscopy

Fabrication of polymer-modified monodisperse mesoporous carbon particles by template-based approach for drug delivery

Low-cost materials for boron adsorption from water

Silica-based hybrid microspheres: synthesis, characterization and wastewater treatment

Adsorption of Bismarck Brown R Dyes Using Mesoporous Silica MCM-48

Positron annihilation and N2 adsorption for nanopore determination in silica-polymer composites

Positron annihilation and N₂ adsorption for nanopore determination in silica-polymer composites