Sensing Application — Ultrathin MOF nanosheet-based resistive sensors for highly sensitive detection of methanol

Measurement evidence

Sensing Application

Ultrathin MOF nanosheet-based resistive sensors for highly sensitive detection of methanol · Dai F., Cui X., Luo Y. et al. · Chemical Communications · 2022 · 11543-11546

1 measurement group · 10 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Resistive methanol gas sensing

Co-TCPP-Ac NS thin film-based sensor · Electrode

30% RH at 25 degC; exposed to methanol gas from 0.5 ppm to 100 ppm; ambient air carrier/recovery gas; response R = Ra/Rg.

Temperature: 298
Atmosphere: Ambient air carrier gas, 30% RH; methanol/air mixtures
Geometry: PCB substrate with Cu/Ni interdigital electrodes and spin-coated Co-TCPP-Ac NS active channel
Context: pristine nanosheet thin-film active channel
Measurement source: 4-5 · Gas sensor characterizations · Fig. 3; Fig. S5; Fig. S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Methanol response/recovery time at 100 ppm	163 s / 7 s at 100 ppm	—	—	SI Table Exact Reported	9 · Table S2 · Table S2
Methanol response/recovery time at 20 ppmMarked as a best value within this paper	6 s / 2 s at 20 ppm	—	—	Text Exact Reported	1 · abstract · Fig. 3c
Methanol response/recovery time rangeMarked as a best value within this paper	from 6 s/2 s to 163 s/7 s over 0.5-100 ppm	—	—	Text Range	3 · main text · Fig. 3c; Table S2
Methanol response relative to formaldehyde	nearly 25 times that of formaldehyde	—	nearly	Text Approximate	3 · main text · Fig. 3f
Methanol concentration test range	0.5 ppm to 100 ppm	—	—	Text Range	4-5 · Gas sensor characterizations · Fig. 3a
Theoretical limit of detection for methanolMarked as a best value within this paper	100 ppb	0.1 ppm	—	Text Rounded Reported	3 · main text · Fig. 3b
Methanol response at 0.5 ppm	Ra/Rg = 1.3 at 0.5 ppm	—	—	Text Rounded Reported	3 · main text · Fig. 3a
Methanol response at 100 ppmMarked as a best value within this paper	Ra/Rg = 363.2 at 100 ppm	—	—	Text Rounded Reported	3 · main text · Fig. 3a; Tables S2-S3
Stability/repeatability test duration	30 days	30 days	—	Text Exact Reported	3 · main text · Fig. 3e; Fig. S6
Working temperature in comparison table	25 degC	298.15 K	—	SI Table Exact Reported	9 · Table S2 · Table S2