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Pnictogen‐Based Enzymatic Phenol Biosensors: Phosphorene, Arsenene, Antimonene, and Bismuthene
Author(s) -
MayorgaMartinez Carmen C.,
Gusmão Rui,
Sofer Zdeněk,
Pumera Martin
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808846
Subject(s) - phosphorene , biosensor , pnictogen , materials science , exfoliation joint , nanotechnology , optoelectronics , graphene , physics , condensed matter physics , superconductivity
Abstract Two‐dimensional materials have allowed for great advances in the biosensors field and to obtain sophisticated, smart, and miniaturized devices. In this work, we optimized a highly sensitive and selective phenol biosensor using 2D pnictogens (phosphorene, arsenene, antimonene, and bismuthene) as sensing platforms. Exfoliated pnictogen were obtained by the shear‐force method, undergoing delamination and downsizing to thin nanosheets. Interestingly, compared with the other tested elements, antimonene exhibited the highest degree of exfoliation and the lowest oxidation‐to‐bulk ratio, to which we attribute its enhanced performance in the phenol biosensor system reported here. The proposed design represents the first biosensor approach developed using exfoliated pnictogens beyond phosphorene.