DC amperometric chemiresistive H2S sensing
2D RD Ni3(HITP)2 interface particles · Powder
0.1 V bias, room temperature, N2 carrier; 5-80 ppm H2S for 30 min with 10 min N2 recovery; 0.5 L min-1 N2 total flow.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| drop-cast device resistance range | about 100-500 ohm | — | — | Text Range | 70 · S11.1 Fabrication of the sensing devices · Figure S84 |
| H2S response at 20 ppm, interface particlesMarked as a best value within this paper | 51 +/- 6% change in conductance | — | +/- 6% | Text Rounded Reported | 1591 · 3.5 Chemiresistive Detection · Figure 5; Figure S92 |
| H2S response at 20 ppm, Zone 1 particles | approximately 43% change in conductance | — | approximately +/- 4% | Figure Axis Approximate | 94 · S11.8.3 Sensing performance of bulk Ni3(HITP)2 towards H2S · Figure S110 |
| H2S response at 20 ppm, Zone 2 particles | approximately 26% change in conductance | — | approximately +/- 2% | Figure Axis Approximate | 94 · S11.8.3 Sensing performance of bulk Ni3(HITP)2 towards H2S · Figure S110 |
| H2S response at 20 ppm, Zone 3 particles | approximately 16% change in conductance | — | approximately +/- 2% | Figure Axis Approximate | 94 · S11.8.3 Sensing performance of bulk Ni3(HITP)2 towards H2S · Figure S110 |
| initial H2S response rate, interface particles at 20 ppmMarked as a best value within this paper | 8.7 +/- 2.6% min-1 | — | +/- 2.6% min-1 | Text Rounded Reported | 1590 · 3.5 Chemiresistive Detection · Figure 5c,d; Figures S93-S97 |
| initial H2S response rate, Zone 3 particles at 20 ppm | 0.7 +/- 0.1% min-1 | — | +/- 0.1% min-1 | Text Rounded Reported | 1590 · 3.5 Chemiresistive Detection · Figure 5c,d; Figures S93-S97 |
| theoretical H2S limit of detection, interface particlesMarked as a best value within this paper | 22 +/- 4 ppb | — | +/- 4 ppb | Text Rounded Reported | 1591 · 3.5 Chemiresistive Detection · Figure S112 |
| theoretical H2S limit of detection, Zone 1 particles | approximately 40 ppb | — | approximately +/- 15 ppb | Figure Axis Approximate | 96 · S11.9 Calculation of the theoretical limit of detection · Figure S112 |
| theoretical H2S limit of detection, Zone 2 particles | approximately 56 ppb | — | approximately +/- 10 ppb | Figure Axis Approximate | 96 · S11.9 Calculation of the theoretical limit of detection · Figure S112 |
| theoretical H2S limit of detection, Zone 3 particles | approximately 215 ppb | — | large error bar, approximately +/- 150 ppb | Figure Axis Approximate | 96 · S11.9 Calculation of the theoretical limit of detection · Figure S112 |
| H2S dosing/recovery cycles tested | 7 dosing/recovery sensing cycles at 80 ppm | 80 ppm H2S | — | Text Exact Reported | 1591 · 3.5 Chemiresistive Detection · Figure S116 |