Structural, morphological and gas sensing properties of undoped and Lanthanum doped nanocrystalline SnO2
Source abstract
Abstract
Abstract Undoped and Lanthanum doped tin dioxide nanopowders were successfully synthesized by a chemical co-precipitation method. The TGA–DTA, XRD, TEM, SEM, EDAX, FTIR, Raman and UV–vis techniques were used to characterize various physico-chemical properties of samples. Thick films of functional material were prepared by using a screen printing technique and then sintered at 650 °C for 2 h. XRD analysis of all the samples revealed formation of single phase rutile type tetragonal structures which was further supported by Raman studies and FTIR measurements. The particle size of sintered SnO 2 was decreased with La doping, confirming the role of La as a grain growth inhibitor. Morphological studies revealed formation of porous structure useful for gas sensing application. Gas sensing characteristics were investigated towards various reducing gases such as liquefied petroleum gas (LPG), acetone (CH 3 COCH 3 ), ethanol (C 2 H 5 OH) and ammonia (NH 3 ). The maximum response was exhibited by 3 mol% La doped SnO 2 thick film towards acetone vapor at an operating temperature of 300 °C. The sensor exhibited quick response and recovery times which were 20 s and 48 s, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Gas-sensing properties of nanostructured SnO2-based sensor synthesized with different methods10.1016/j.vacuum.2006.10.007 ↗
2. Alcohols and acetone sensing properties of SnO2 thin films deposited by dip-coating10.1016/j.snb.2005.10.024 ↗
3. Effect of thickness of platinum catalyst clusters on response of SnO2 thin film sensor for LPG10.1016/j.snb.2010.10.013 ↗
4. Highly sensitive and selective butanone sensors based on cerium-doped SnO2 thin films10.1016/j.snb.2010.01.014 ↗
5. Gas sensing properties of lead doped tin oxide thick films10.1016/j.matlet.2006.05.012 ↗
6. Antimony-doped tin dioxide nanometer powders prepared by the hydrothermal method10.1016/S0167-9317(03)00038-8 ↗
7. Synthesis and ethanol sensing properties of Fe-doped SnO2 nanofibers10.1016/j.matlet.2009.01.051 ↗
8. Nanostructured thick film sensors for CO based on Al doped SnO2
9. Synthesis, characterization and gas-sensing properties of Pd-doped SnO2 nanoparticles10.1016/S1003-6326(11)60898-4 ↗
10. Hydrogen sensing and mechanism of M-doped SnO2 (M=Cr3+, Cu2+ and Pd2+) nanocomposite10.1016/j.snb.2011.08.008 ↗
11. Linear ethanol sensing of SnO2 nanorods with extremely high sensitivity10.1063/1.2166695 ↗
12. Nd-doped SnO2: characterization and its gas sensing property
13. Fe-doped SnO2 transparent semi-conducting thin films deposited by spray pyrolysis technique: thermoelectric and p-type conductivity properties10.1016/j.solidstatesciences.2008.05.005 ↗
14. Highly sensitive and selective butanone sensors based on cerium-doped SnO2 thin films10.1016/j.snb.2010.01.014 ↗
15. Sinterability and microstructure of Bi-added SnO2 nanomaterials by precipitation method
16. Axial periodical nanostructures of Sb-doped SnO2 grown by chemical vapor deposition10.1016/j.physe.2009.05.011 ↗
17. Carbon dioxide sensitivity of La doped thick film tin oxide gas sensor10.1016/j.ceramint.2011.05.129 ↗
18. Catalytic activity of nanometric pure and rare earth-doped SnO2 samples10.1016/j.matlet.2007.09.058 ↗
19. Cr2O3-activated ZnO thick film resistors for ammonia gas sensing operable at room temperature10.1016/j.snb.2007.03.028 ↗
20. Influence of Pd-loading on gas sensing characteristics of SnO2 thick films10.1016/j.ceramint.2012.02.073 ↗
21. High sensitivity and fast response SnO2 and La SnO2 catalytic pellet sensors in detecting volatile organic compounds10.1016/j.psep.2010.10.008 ↗
22. Acetone sensors based on La3+ doped ZnO nano-rods prepared by solvothermal method10.1016/S1005-0302(12)60042-5 ↗
23. Synthesis and characterization of SnO2 films obtained by a wet chemical process
24. Effect of Mn doping on the structural and optical properties of SnO2 nanoparticles10.1016/j.jallcom.2012.01.072 ↗
25. The effect of substrate temperature e on electrical and optical properties of reactively evaporated tin oxide thin films
26. Surface characterization study on SnO2 powder modified by thiourea10.1016/j.matchemphys.2005.03.058 ↗
27. SnO2–Au nanocomposite synthesized by successive ionic layer deposition method: characterization and application in gas sensors10.1016/j.matchemphys.2011.03.041 ↗
28. Synthesis, characterization and photoluminescence properties of Dy3+-doped nano-crystalline SnO210.1016/j.matchemphys.2009.12.010 ↗
29. Gas sensing mechanism and properties of Ce-doped SnO2 sensors for volatile organic compounds10.1016/j.mssp.2012.02.015 ↗
30. Highly sensitive ethanol chemical sensor based on Ni-doped SnO2 nanostructure10.1016/j.bios.2011.07.024 ↗
31. Highly sensitive ethanol sensors based on nanocrystalline SnO2 thin films10.1016/j.cap.2010.03.002 ↗