Selective acetylene detection through surface modification of metal–insulator–semiconductor sensors with alkanethiolate monolayers

Marshall, Steve T.; Schwartz, Daniel K.; Medlin, J. Will

doi:10.1016/j.snb.2008.11.026

Cited by 16 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, although Pd is an excellent acetylene hydrogenation catalyst [39], Pd-MIS sensors do no have any sensitivity for acetylene. However, when sulfur is introduced to the surface as a alkanethiol self-assembled monolayer or H 2 S, sensitivity to acetylene is conferred with excellent selectivity of similar analytes such as ethylene [114]. The addition of alkanethiol self-assembled monolayers to supported Pd/Al 2 O 3 has likewise been shown to result in greatly improved selectivity for selective hydrogenation of 1-epoxy-3-butene due to selective poisoning of epoxide ring opening by sulfur.…”

Section: Sulfurmentioning

confidence: 99%

Surface-level mechanistic studies of adsorbate–adsorbate interactions in heterogeneous catalysis by metals

Marshall

Medlin

2011

Surface Science Reports

Self Cite

View full text Add to dashboard Cite

Section: Sulfurmentioning

confidence: 99%

Surface-level mechanistic studies of adsorbate–adsorbate interactions in heterogeneous catalysis by metals

Marshall

Medlin

2011

Surface Science Reports

Self Cite

View full text Add to dashboard Cite

“…Therefore, QEPTS is a non-contact measurement technique and can be used for standoff and remote trace gas detection, which differs from quartz-enhanced photoacoustic spectroscopy [13][14][15][16][17]. Acetylene (C 2 H 2 ) was chosen as the analyte to verify the reported sensor performance due to its important applications in the detection of fault gases in transformers [18] and in ethylene streams for polyethylene production [19].…”

Section: Introductionmentioning

confidence: 99%

Quartz-tuning-fork enhanced photothermal spectroscopy for ultra-high sensitive trace gas detection

et al. 2018

View full text Add to dashboard Cite

A gas sensing method based on quartz-tuning-fork enhanced photothermal spectroscopy (QEPTS) is reported in this paper. Unlike usually used thermally sensitive elements, a sharply resonant quartz-tuning-fork with the capability of enhanced mechanical resonance was used to amplify the photothermal signal level. Acetylene (C 2 H 2) detection was used to verify the QEPTS sensor performance. The measured results indicate a minimum detection limit (MDL) of 718 ppb and a normalized noise equivalent absorption coefficient (NNEA) of 7.63 × 10 −9 cm −1 W/√Hz. This performance demonstrates that QEPTS can be an ultra-high sensitive technique for gas detection and shows superiority when compared to usually used methods of tunable diode laser absorption spectroscopy (TDLAS) and quartzenhanced photoacoustic spectroscopy (QEPAS). Furthermore, when compared to an optical detector, especially a costly mercury cadmium telluride (MCT) detector with cryogenic cooling used in TDLAS, a quartz-tuning-fork is much cheap and tiny. Besides, compared to the QEPAS technique, QEPTS is a non-contact measurement technique and therefore can be used for standoff and remote trace gas detection.

show abstract

“…110, 031107-1 employed as an acoustic wave transducer. C 2 H 2 was chosen as the analyte due to its important applications in the detection of fault gases in transformers 21 and in ethylene streams for polyethylene production. 22 A pigtailed, near infrared, continuous wave (CW), DFB diode laser emitting at 1.53 lm was employed as the excitation source.…”

mentioning

confidence: 99%

Ultra-high sensitive acetylene detection using quartz-enhanced photoacoustic spectroscopy with a fiber amplified diode laser and a 30.72 kHz quartz tuning fork

Zhang

et al. 2017

Applied Physics Letters

114

View full text Add to dashboard Cite

An ultra-high sensitive acetylene (C 2 H 2) Quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a high power laser and a quartz tuning fork with a resonance frequency f 0 of 30.72 kHz was demonstrated. An erbium-doped fiber amplifier (EDFA) amplified distributed feedback diode laser with a center wavelength of 1.53 lm was used as the exciting source. A 33.2 ppb minimum detection limit (MDL) at 6534.37 cm À1 was achieved, and the calculated normalized noise equivalent absorption coefficient was 3.54 Â 10 À8 cm À1 W/ͱHz when the laser output power was 1500 mW. The ppb-level detection sensitivity of C 2 H 2 validated the reported QEPAS method.

show abstract

Selective acetylene detection through surface modification of metal–insulator–semiconductor sensors with alkanethiolate monolayers

Cited by 16 publications

References 22 publications

Surface-level mechanistic studies of adsorbate–adsorbate interactions in heterogeneous catalysis by metals

Surface-level mechanistic studies of adsorbate–adsorbate interactions in heterogeneous catalysis by metals

Quartz-tuning-fork enhanced photothermal spectroscopy for ultra-high sensitive trace gas detection

Ultra-high sensitive acetylene detection using quartz-enhanced photoacoustic spectroscopy with a fiber amplified diode laser and a 30.72 kHz quartz tuning fork

Contact Info

Product

Resources

About