Gas-sensing properties and in situ diffuse reflectance infrared Fourier transform spectroscopy study of formaldehyde adsorption and reactions on SnO2 films
Source abstract
Abstract
Formaldehyde (HCHO) is widely used in construction, wood processing, furniture, textile, and carpeting industries. However, it is highly toxic. It strongly irritates human eyes and nose, and is a carcinogen. In this paper, the effects of gas concentration and operating temperature on the sensing properties of the nano-SnO2flat-type coplanar gas sensor arrays to formaldehyde were studied. The results revealed that the nano-SnO2flat-type coplanar gas sensor arrays exhibited good sensitivity such as a fast response, short recovery time, and low detection limit. In addition, the adsorption and surface reactions of formaldehyde on SnO2films were also studied by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) at 200–300 °C. Molecularly adsorbed formaldehyde, formate, dioxymethylene, polyoxymethylene, H2O, and CO2surface species were formed during formaldehyde adsorption at 200–300 °C. Moreover, a possible mechanism of the reaction process was given.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Water Quality Monitoring and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. 10.1016/S0257-8972(97)00561-610.1016/S0257-8972(97)00561-6 ↗
2. 10.1016/j.cattod.2007.06.01010.1016/j.cattod.2007.06.010 ↗
3. 10.1016/S0925-4005(01)00784-510.1016/S0925-4005(01)00784-5 ↗
4. 10.1007/s00226-010-0314-x10.1007/s00226-010-0314-x ↗
5. 10.1006/jcat.1995.118710.1006/jcat.1995.1187 ↗
6. 10.1006/rtph.2001.148610.1006/rtph.2001.1486 ↗
7. 10.1016/j.jcat.2004.05.02410.1016/j.jcat.2004.05.024 ↗
8. 10.1021/jp800518v10.1021/jp800518v ↗
9. 10.1016/j.snb.2011.02.02610.1016/j.snb.2011.02.026 ↗
10. 10.1016/j.bioelechem.2009.06.01610.1016/j.bioelechem.2009.06.016 ↗
11. 10.1016/j.snb.2009.03.03610.1016/j.snb.2009.03.036 ↗
12. 10.1063/1.216669510.1063/1.2166695 ↗
13. 10.1016/S1872-2067(09)60043-710.1016/S1872-2067(09)60043-7 ↗
14. 10.1016/j.apcata.2004.06.01210.1016/j.apcata.2004.06.012 ↗
15. 10.1016/j.apcata.2006.04.03010.1016/j.apcata.2006.04.030 ↗
16. 10.1016/j.snb.2011.05.02310.1016/j.snb.2011.05.023 ↗
17. 10.1016/S0925-4005(01)00885-110.1016/S0925-4005(01)00885-1 ↗
18. Synthesizing SnO2 thin films and characterizing sensing performances10.1016/j.snb.2010.07.036 ↗
19. 10.1016/j.snb.2010.09.01510.1016/j.snb.2010.09.015 ↗
20. 10.1016/j.yrtph.2004.05.00110.1016/j.yrtph.2004.05.001 ↗
21. Specially environmental responses induced by multi-field coupling for nanocrystalline SnO2 porous film as gas sensor10.1016/j.snb.2013.03.013 ↗
22. 10.2174/157341371130903001110.2174/1573413711309030011 ↗
23. 10.1016/j.solidstatesciences.2009.06.01410.1016/j.solidstatesciences.2009.06.014 ↗
24. 10.1021/la302590g10.1021/la302590g ↗
25. 10.1016/j.snb.2010.06.05710.1016/j.snb.2010.06.057 ↗
26. Gas sensing properties of Au modified SnO2 micron rods10.2174/157341308785161064 ↗
27. 10.1016/j.snb.2012.03.07510.1016/j.snb.2012.03.075 ↗
28. The surface and materials science of tin oxide10.1016/j.progsurf.2005.09.002 ↗
29. 10.1016/j.snb.2006.07.00610.1016/j.snb.2006.07.006 ↗
30. 10.1016/S1352-2310(03)00178-X10.1016/S1352-2310(03)00178-X ↗
31. 10.1016/j.aca.2012.05.04410.1016/j.aca.2012.05.044 ↗
32. Formaldehyde gas sensing property and mechanism of TiO2–Ag nanocomposite10.1016/j.physb.2010.07.017 ↗
33. 10.1016/j.vaccine.2013.03.07110.1016/j.vaccine.2013.03.071 ↗
34. 10.1002/jat.255009010810.1002/jat.2550090108 ↗
35. Gas sensing properties of ordered mesoporous SnO210.3390/s6040318 ↗
36. 10.1016/j.apsusc.2013.01.03810.1016/j.apsusc.2013.01.038 ↗
37. 10.1016/j.snb.2009.12.05210.1016/j.snb.2009.12.052 ↗
38. 10.1039/c3ra40567b10.1039/c3ra40567b ↗
39. 10.1016/S1381-1169(00)00152-710.1016/S1381-1169(00)00152-7 ↗
40. Synthesis and characterization of Cu-SnO2 nanoparticles deposited on glass using ultrasonic spray pyrolysis and their H2S sensing properties10.2174/157341312803988980 ↗
41. 10.1021/jp025995h10.1021/jp025995h ↗