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Title: Platinum Nanoparticle Loading of Boron Nitride Aerogel and Its Use as a Novel Material for Low-Power Catalytic Gas Sensing

Journal Article · · Advanced Functional Materials
 [1];  [2];  [2];  [1];  [3];  [2];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States). Department of Chemical and Biomolecular Engineering
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Department of Physics, Materials Sciences Division and Kavli Energy NanoSciences Institute
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Science Directorate

A high-surface-area, highly crystalline boron nitride aerogel synthesized with nonhazardous reactants has been loaded with crystalline platinum nanoparticles to form a novel nanomaterial that exhibits many advantages for use in a catalytic gas sensing application. The platinum nanoparticle-loaded boron nitride aerogel integrated onto a microheater platform allows for calorimetric propane detection. The boron nitride aerogel exhibits thermal stability up to 900°C and supports disperse platinum nanoparticles, with no sintering observed after 24 h of high-temperature testing. The high thermal conductivity and low density of the boron nitride aerogel result in an order of magnitude faster response and recovery times ( < 2 s) than reported on alumina support and allow for 10% duty cycling of the microheater with no loss in sensitivity. The resulting 1.5 mW sensor power consumption is two orders of magnitude less than commercially available catalytic gas sensors and unlocks the potential for wireless, battery-powered catalytic gas sensing.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-07NA27344; AC02-05CH11231
OSTI ID:
1409980
Alternate ID(s):
OSTI ID: 1440917
Report Number(s):
LLNL-JRNL-691677
Journal Information:
Advanced Functional Materials, Vol. 26, Issue 3; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 62 works
Citation information provided by
Web of Science

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Cited By (13)

High Surface Area MoS 2 /Graphene Hybrid Aerogel for Ultrasensitive NO 2 Detection journal May 2016
“Naked” Magnetically Recyclable Mesoporous Au-γ-Fe 2 O 3 Nanocrystal Clusters: A Highly Integrated Catalyst System journal January 2017
Two-Dimensional Nanostructured Materials for Gas Sensing journal August 2017
Versatile Aerogels for Sensors journal September 2019
Surface modification of hexagonal boron nitride nanomaterials: a review journal August 2017
Synthesis of aerogels: from molecular routes to 3-dimensional nanoparticle assembly journal January 2017
Improved control on the morphology and LSPR properties of plasmonic Pt NPs through enhanced solid state dewetting by using a sacrificial indium layer journal January 2019
On-chip assembly of 3D graphene-based aerogels for chemiresistive gas sensing journal January 2020
Extremely sensitive and accurate H 2 S sensor at room temperature fabricated with In-doped Co 3 O 4 porous nanosheets journal January 2019
Understanding the noble metal modifying effect on In 2 O 3 nanowires: highly sensitive and selective gas sensors for potential early screening of multiple diseases journal January 2019
Ultrathin Pd-based nanosheets: syntheses, properties and applications journal January 2020
Resistive gas sensors based on metal-oxide nanowires journal December 2019
Carbon aerogel evolution: Allotrope, graphene-inspired, and 3D-printed aerogels journal October 2017