Sensing Application — Single-Atom Catalysts in Conductive Metal-Organic Frameworks: Enabling Reversible Gas Sensing at Room Temperature

5 measurement groups · 15 results

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

Chemiresistive NO2 sensing

Ag1-cMOF chemiresistor · Thin Film

Ag1-cMOF sensor exposed to 3 ppm NO2.

Temperature: room temperature
Atmosphere: air
Geometry: Al2O3 substrate with interdigitated Au electrodes
Context: Ag SAC sensor compared qualitatively with Pd1-cMOF and pristine cMOF.
Measurement source: rendered page 18 / SI p.18 · Figure S15 · Figure S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ag1-cMOF NO2 response at 3 ppm	approximately -12% minimum response with partial recovery by 40 min	—	visual estimate from axis	Visual Estimate Approximate	rendered page 18 / SI p.18 · Figure S15 · Figure S15

Chemiresistive NO2 and interferent-gas sensing

pristine cMOF chemiresistor · Thin Film

Pristine cMOF sensor exposed to 3 ppm NO2, O2/N2 and 3 ppm reducing/interfering gases.

Temperature: room temperature
Atmosphere: dry air / air
Geometry: Al2O3 substrate with interdigitated Au electrodes
Context: Pristine control sensor.
Measurement source: rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figures 4a,b; Figures S11 and S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Pristine cMOF baseline resistance drift over 10 NO2 cycles	baseline resistance drift up to 28.7%	—	—	Text Exact Reported	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4b
Pristine cMOF response variance over 10 NO2 cycles	65.4% deviation in response value	—	—	Text Exact Reported	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4b

Chemiresistive NO2 sensing, resistance read by Agilent 34972

Pd1-cMOF chemiresistor · Thin Film

Room-temperature NO2 exposure/recovery in air; 3 ppm NO2 dynamic traces, 10 cycles of 1 ppm NO2, and 0.3-3 ppm concentration series.

Temperature: room temperature
Atmosphere: air / dry air; dark for Table S3 comparison
Geometry: Al2O3 substrate with two interdigitated Au electrodes spaced 75 um apart
Context: Pd1-cMOF target sensor compared with pristine cMOF and Pd-NP@cMOF controls.
Measurement source: rendered pages 5 and 8 / article pp.26070 and 26073 · Chemiresistive Gas Sensing Properties; Gas Sensing Measurement · Figure 4; Figures S11-S17; Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Pd1-cMOF tested NO2 concentration range	0.3-3 ppm	—	—	Text Range	rendered page 6 / article p.26071 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figures 4c and S16
Pd1-cMOF baseline resistance drift over 10 NO2 cyclesMarked as a best value within this paper	minimal drift within 3%	—	within 3%	Text Approximate	rendered page 6 / article p.26071 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4b
Pd1-cMOF response variance over 10 NO2 cyclesMarked as a best value within this paper	15.7% variance in responses	—	—	Text Exact Reported	rendered page 6 / article p.26071 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4b
Pd1-cMOF NO2 detection limitMarked as a best value within this paper	0.2 ppm; lowest concentration experimentally detected	—	—	SI Table Exact Reported	rendered page 26 / SI p.26 · Table S3 · Table S3
Pd1-cMOF response linear-fit R2	R2 = 0.992	—	—	Figure Axis Approximate	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4d
Pd1-cMOF response slope below 2 ppm NO2	slope = 3.73 %/ppm; R2 = 0.992	—	—	Figure Axis Approximate	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4d
Pd1-cMOF NO2 recovery time t90 at 3 ppmMarked as a best value within this paper	11.1 min at 3 ppm	—	—	Table Exact Reported	rendered page 26 / SI p.26 · Table S3 · Table S3
Pd1-cMOF NO2 response at 3 ppmMarked as a best value within this paper	-9.8% at 3 ppm	—	—	Table Exact Reported	rendered page 26 / SI p.26 · Table S3 · Table S3
Pd1-cMOF NO2 response time t90 at 3 ppmMarked as a best value within this paper	4.1 min at 3 ppm	—	—	Table Exact Reported	rendered page 26 / SI p.26 · Table S3 · Table S3

Chemiresistive NO2 sensing

Pd-NP@cMOF chemiresistor · Thin Film

Pd-NP@cMOF reference sensor exposed to 3 ppm NO2.

Temperature: room temperature
Atmosphere: air
Geometry: Al2O3 substrate with interdigitated Au electrodes
Context: Pd nanoparticle reference compared with Pd1-cMOF and pristine cMOF.
Measurement source: rendered page 17 / SI p.17 · Figure S14 · Figure S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Pd-NP@cMOF NO2 response reversibility	reversible NO2 response not observed	—	—	Text Qualitative	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure S14

Chemiresistive selectivity test

Pd1-cMOF chemiresistor · Thin Film

3 ppm interfering gases: acetone, toluene, ethanol, CO, H2S, NH3, and NO2 comparison.

Temperature: room temperature
Atmosphere: air
Geometry: Al2O3/Au chemiresistor
Context: Pd1-cMOF target sensor.
Measurement source: rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4e; Figure S17

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Pd1-cMOF H2S interferent response at 3 ppm	approximately +13% response to H2S	—	visual estimate from bar chart	Visual Estimate Approximate	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4e
Pd1-cMOF low responses to acetone/toluene/ethanol/CO/NH3	acetone, toluene, ethanol, CO and NH3 each approximately 0-2% absolute response at 3 ppm	—	visual estimate from bar chart	Visual Estimate Approximate	rendered page 5 / article p.26070 · Chemiresistive Gas Sensing Properties of Pd1-cMOF · Figure 4e