In:
Angewandte Chemie, Wiley, Vol. 131, No. 29 ( 2019-07-15), p. 10038-10043
Abstract:
Diamondoids, sp 3 ‐hybridized nanometer‐sized diamond‐like hydrocarbons (nanodiamonds), difunctionalized with hydroxy and primary phosphine oxide groups, enable the assembly of the first sp 3 ‐C‐based chemical sensors by vapor deposition. Both pristine nanodiamonds and palladium nanolayered composites can be used to detect toxic NO 2 and NH 3 gases. This carbon‐based gas sensor technology allows reversible NO 2 detection down to 50 ppb and NH 3 detection at 25–100 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. 140 m 2 g −1 ) and channel nanoporosity derive from H‐bonding.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v131.29
DOI:
10.1002/ange.201903089
Language:
English
Publisher:
Wiley
Publication Date:
2019
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