Diamondoid Nanostructures as sp3 -Carbon-Based Gas Sensors.
Angew Chem Int Ed Engl
; 58(29): 9933-9938, 2019 Jul 15.
Article
in En
| MEDLINE
| ID: mdl-31087744
ABSTRACT
Diamondoids, sp3 -hybridized nanometer-sized diamond-like hydrocarbons (nanodiamonds), difunctionalized with hydroxy and primary phosphine oxide groups, enable the assembly of the first sp3 -C-based chemical sensors by vapor deposition. Both pristine nanodiamonds and palladium nanolayered composites can be used to detect toxic NO2 and NH3 gases. This carbon-based gas sensor technology allows reversible NO2 detection down to 50â
ppb and NH3 detection at 25-100â
ppm concentration with fast response and recovery processes at 100 °C. Reversible gas adsorption and detection is compatible with 50 % humidity conditions. Semiconducting p-type sensing properties are achieved from devices based on primary phosphine-diamantanol, in which high specific area (ca. 140â
m2 g-1 ) and channel nanoporosity derive from H-bonding.
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01-internacional
Database:
MEDLINE
Language:
En
Journal:
Angew Chem Int Ed Engl
Year:
2019
Document type:
Article
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