Sensing Application — Zeolites as a Class of Semiconductors for High-Performance Electrically Transduced Sensing

Measurement evidence

Sensing Application

Zeolites as a Class of Semiconductors for High-Performance Electrically Transduced Sensing · Wang T., Chu Y., Li X. et al. · Journal of the American Chemical Society · 2023 · 5342-5352

2 measurement groups · 10 results

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

Chemiresistive NH3 gas sensing by d.c. resistance

Na-MTW (22) · Powder

Na-MTW zeolite sensors; 20 ppm NH3; 325 C optimum for Na-MTW (22)

Temperature: 598
Atmosphere: NH3-containing humid/dry gas
Geometry: screen-printed zeolite film on Pt interdigitated ceramic sensor
Context: device using pristine zeolite active film
Measurement source: 44 · Supplementary Figures · Figure S34

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Baseline resistance of Na-MTW (22) sensor at 325 C	329 Mohm	—	—	Caption Exact Reported	44 · Supplementary Figures · Figure S34
Gas response of Na-MTW (22) sensor to 20 ppm NH3 at 325 CMarked as a best value within this paper	S = 50	—	—	Caption Exact Reported	44 · Supplementary Figures · Figure S34

Chemiresistive NH3 gas sensing by d.c. resistance

Na-ZSM-5 (9.8) chemiresistive sensor film · Thin Film

Flow-through gas sensing; total flow 500 sccm; 275-350 C; RH 2-80%; resistance recorded every 1 s

Temperature: 548-623
Atmosphere: air/N2/O2/NH3 with controlled humidity
Geometry: screen-printed zeolite film on Pt interdigitated ceramic sensor
Context: device using pristine zeolite active film
Measurement source: 5344 · Fabrication of Zeolite-Based Gas Sensors and Gas Sensing Measurements · Figure 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NH3 limit of detection for Na-ZSM-5 (9.8) sensorMarked as a best value within this paper	77 ppb	0.077 ppm	—	Text Rounded Reported	5348 · Design and Characterization of Semiconducting Zeolite-Based Gas Sensors · Figure 3f
Baseline resistance of Na-ZSM-5 (9.8) sensor at 300 C	610 Mohm	—	—	Text Exact Reported	5347 · Design and Characterization of Semiconducting Zeolite-Based Gas Sensors · Figure 3b
Baseline resistance of Na-ZSM-5 (9.8) sensor at 350 CMarked as a best value within this paper	207 Mohm	—	—	Text Exact Reported	5347 · Design and Characterization of Semiconducting Zeolite-Based Gas Sensors · Figure 3b
Gas response to 5 ppm NH3 for Na-ZSM-5 (9.8)Marked as a best value within this paper	S = 51 to 5 ppm NH3	—	—	Text Exact Reported	5348 · Design and Characterization of Semiconducting Zeolite-Based Gas Sensors · Figure 3c
90% response time to 0.1 ppm NH3 at 300 C and 2% RH	306 s	—	—	SI Table Exact Reported	60 · Supplementary Tables · Table S5
90% response time to 100 ppm NH3 at 300 C and 2% RHMarked as a best value within this paper	10 s	—	—	SI Table Exact Reported	60 · Supplementary Tables · Table S5
90% response time to 20 ppm NH3 at 300 C and 2% RH	32 s	—	—	SI Table Exact Reported	60 · Supplementary Tables · Table S5
Relative humidity range for Na-ZSM-5 (9.8) NH3 sensing	2-80% RH	—	—	SI Table Range	61 · Supplementary Tables · Table S6