Aerogel-platform optical sensors for oxygen gas

Plata, Desirée L.; Briones, Yadira J.; Wolfe, Rebecca L.; Carroll, Mary K.; Bakrania, Smitesh; Mandel, Shira G.; Anderson, Ann M.

doi:10.1016/j.jnoncrysol.2004.06.046

Cited by 64 publications

(32 citation statements)

References 28 publications

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“…The unique combination of structural and thermal properties makes it an attractive material for a multiplicity of applications ranging from platforms for thermal insulation to chemical sensors [6][7][8]. Energy storage and heat, catalyst supports, battery electrodes, humidity sensors and gas, adsorbents, and drug delivery systems, etc.…”

Section: Introductionmentioning

confidence: 99%

Study the Effect of Doping with Chromium Chloride on Silica Aerogel Properties Prepared with Ambient Pressure

Al-Sharueez¹,

Twej²

2017

IOSR JAP

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Section: Introductionmentioning

confidence: 99%

Study the Effect of Doping with Chromium Chloride on Silica Aerogel Properties Prepared with Ambient Pressure

Al-Sharueez¹,

Twej²

2017

IOSR JAP

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“…All of the pores in solid aerogels result in much available surface area making aerogels extremely useful for any applications where surface reactions are important. When chemical or biochemical functionality is assembled within the aerogel nanoarchitecture, it has been shown that the physical porosity and enhanced surface area of the aerogels help to improve sensors, as well as electrodes for battery, fuel cell, and supercapacitor applications 11,[15][16][17][18][19][20][21][22][23] . In order to dry aerogels in a way that leaves the porous solid matrix unchanged, it is typical to remove the solvent that remains in the pores after sol-gel synthesis through supercritical solvent extraction.…”

Section: Introductionmentioning

confidence: 99%

Encapsulating Cytochrome <em>c</em> in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity

Harper-Leatherman

Pacer

Kosciuszek

2016

JoVE

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Applications such as sensors, batteries, and fuel cells have been improved through the use of highly porous aerogels when functional compounds are encapsulated within the aerogels. However, few reports on encapsulating proteins within sol-gels that are processed to form aerogels exist. A procedure for encapsulating cytochrome c (cyt. c) in silica (SiO 2 ) sol-gels that are supercritically processed to form bioaerogels with gas-phase activity for nitric oxide (NO) is presented. Cyt. c is added to a mixed silica sol under controlled protein concentration and buffer strength conditions. The sol mixture is then gelled and the liquid filling the gel pores is replaced through a series of solvent exchanges with liquid carbon dioxide. The carbon dioxide is brought to its critical point and vented off to form dry aerogels with cyt. c encapsulated inside. These bioaerogels are characterized with UV-visible spectroscopy and circular dichroism spectroscopy and can be used to detect the presence of gas-phase nitric oxide. The success of this procedure depends on regulating the cyt. c concentration and the buffer concentration and does not require other components such as metal nanoparticles. It may be possible to encapsulate other proteins using a similar approach making this procedure important for potential future bioanalytical device development.

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“…Sol-gel method can produce bulk materials as well as films on the different substrates. The porous silica films can offer various application in optoelectronics [2][3][4]. Due to low refractive index, the porous silica layers can be applied in optical systems to reduce the light reflection coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…www.pss-c.com physica p s s status solidi c 76×25×1mm 3 . The substrate glass plates were washed following the procedure which included: mechanical cleaning in water with detergent, rinsing in deionised water, soaking in 5% ammonia water solution, rinsing in deionised water, rinsing in acetone and drying.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of silica antireflective films formed in sol‐gel processes

Jaglarz

Karasiński

Skoczek

2011

Phys. Status Solidi C

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The work presents optical properties of sol‐gel derived porous silica films of low refractive index, from 1.2 to 1.3. Due to low refractive index, the porous silica films can be applied to reduce the light reflection coefficient. This allows porous silica films as good candidates for the antireflective coatings (ARC) production. The spectroscopic ellipsometric measurements have been performed for the refractive indices and thickness of silica films determination. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Aerogel-platform optical sensors for oxygen gas

Cited by 64 publications

References 28 publications

Study the Effect of Doping with Chromium Chloride on Silica Aerogel Properties Prepared with Ambient Pressure

Study the Effect of Doping with Chromium Chloride on Silica Aerogel Properties Prepared with Ambient Pressure

Encapsulating Cytochrome <em>c</em> in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity

Optical properties of silica antireflective films formed in sol‐gel processes

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