Sensing of volatile organic compounds on two-dimensional nitrogenated holey graphene, graphdiyne, and their heterostructure

Metal-N4@Graphene as Multifunctional Anchoring Materials for Na-S Batteries: First-Principles Study

“…One effective strategy to improve the interactions with polysulfides is to dope heteroatom into graphene nanosheet, based on the lessons learned from Li-S batteries [ 26 , 27 , 28 ]. Particularly, N atom is the most widely used dopant for Li/Na-S batteries as an anchoring material [ 26 , 27 , 29 , 30 ]. For instance, pyrrolic and pyridinic N-doped graphene shows a much stronger combination with lithium polysulfides (LiPSs) through covalent bonds than pristine graphene, as reported by J. J. Chen et al [ 26 ] and Y. Qiu et al [ 27 ].…”

Sensing the polar molecules MH3 (M = N, P, or As) with a Janus NbTeSe monolayer

“…For instance, previous studies reported that single and multi-layer MoS 2 and WS 2 field-effect transistor (FET) devices exhibit excellent sensitivity to a number of gas molecules, such as CO, CO 2 , NH 3 (5-50 ppm), NO and NO 2 (20 ppm) via changes in their resistivity induced by differences in their tendency to donate or accept charge from the substrates. [16][17][18][19][20][21][22][23] On the other hand, their extraordinary properties, such as high surface-to-volume ratio, free-carrier mobility, selective reactivity upon exposure to a range of analytes, rapid response and recovery make them a priority as gas sensors. Further, defects, doping elements, strain, and gate bias (electric field) are also important parameters to enhance the sensitivity and selectivity of a particular gas on TMDs.…”

Edge-Hydrogenated Germanene by Electrochemical Decalcification-Exfoliation of CaGe2: Germanene-Enabled Vapor Sensor

“…58 The use of 2D materials has been widely explored for the detection of VOCs and gases, 59 where the intrinsic electrical conductivity 60,61 (charge transfer, bandgap value) of the materials was considered. For instance, several investigations describe the influence of volatile molecules on 2D surfaces such as metal nanoparticles, metal oxides nanostructures, [62][63][64] MoS2, 65 WS2, 66 BN, 67 graphene, 60,[68][69][70] silicene, 71 phosphorene. [72][73][74][75][76] Recently hydrogenated germanene as a 2D graphene analog has been rightly considered for gas sensing yet based on the theoretical study.…”