Influence of Al doping on the structural, morphological, optical, and gas sensing properties of ZnO nanorods
Source abstract
Abstract
Abstract Ammonia is one of the most hazardous substance and highly toxic to human health when inhaled above the moderate level. Sensing ammonia is one most challenging task at low temperature level and room temperature. ZnO and Al-doped ZnO nanostructures were successfully synthesized by sol–gel method, and their structural, optical, morphological, and gas sensing properties were investigated. Field-emission scanning electron microscopy revealed that the ZnO nanorods transformed into particles upon incorporation of Al. Transmission electron microscopy and high-resolution transmission electron microscopy confirmed that both the ZnO nanorods and Al-doped ZnO nanoparticles were crystalline. Fourier transform infrared spectroscopy analysis indicated the presence of Zn–O and Al–O in the nanostructures. Energy-dispersive X-ray spectroscopy revealed the presence of Al in the Al-doped ZnO materials. The ammonia gas sensing analysis revealed that the Al-doped ZnO nanoparticles displayed a higher response than the ZnO nanorods. Moreover, among the doped samples, that containing 6 wt% Al dopant exhibited the highest response of 350 when exposed to 100 ppm ammonia gas. The higher sensing efficiency of the Al-doped ZnO nanostructures was attributed to changes in structural defects in Al-doped ZnO, as confirmed by X-ray photoelectron spectroscopy analysis.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
Show source-provided references
1. A new detector for gaseous components using zinc oxide thin films
2. Study on a detector for gaseous components using semiconductive thin films10.1021/ac60240a031 ↗
3. Microsphere templating as means of enhancing surface activity and gas sensitivity of CaCu3Ti4O12 thin films10.1021/nl051965p ↗
4. Selective detection of NO2 and C2H5OH using a Co3O4-decorated ZnO nanowire network sensor10.1039/c0cc05256f ↗
5. Liao · 2007 · vol. 111 · 1900
6. Influence of Al, In, Cu, Fe and Sn dopants on the response of thin film ZnO gas sensor to ethanol vapour10.1016/S0040-6090(00)01120-2 ↗
7. Al-doped zinc oxide thin films for liquid petroleum gas (LPG) sensors10.1016/j.snb.2008.02.014 ↗
8. Effect of annealing temperature on structural, optical and electrical properties of hydrothermal assisted zinc oxide nanorods10.1016/j.tsf.2015.11.071 ↗
9. H2S gas sensitive indium-doped ZnO thin films: preparation and characterization10.1016/j.snb.2009.08.056 ↗
10. Nano-crystalline Cu-doped ZnO thin film gas sensor for CO10.1016/j.snb.2005.09.008 ↗
11. Optical fiber-based evanescent ammonia sensor10.1016/j.snb.2005.02.015 ↗
12. Heterojunction CuO@ZnO microcubes for superior p-type gas sensor application10.1016/j.jallcom.2016.02.197 ↗
13. Al-doped ZnO for highly sensitive CO gas sensors10.1016/j.snb.2014.01.068 ↗
14. Al-doped ZnO thin films as methanol sensors10.1016/j.snb.2008.06.006 ↗
15. Optical and gas sensing properties of Al-doped ZnO transparent conducting films prepared by sol-gel method under different heat treatments10.1016/j.ceramint.2014.02.090 ↗
16. Effect of electron irradiation on gas sensing properties of Al-Zno10.1080/23311940.2015.1019664 ↗
17. Highly sensitive gas sensor based on Al-doped ZnO nanoparticles for detection of dimethyl methylphosphonate as a chemical warfare agent simulant10.1016/j.snb.2015.06.076 ↗
18. Elaboration and characterization of Al doped ZnO nanorod thin films annealed in hydrogen10.1016/j.jallcom.2010.12.118 ↗
19. Patil · 2011 · vol. 13 · 1331
20. Electrical and optical properties of Al-doped ZnO thin films by sol-gel process10.1016/j.apsusc.2006.10.068 ↗
21. The effect of Al-doping on ZnO nanoparticles applied as catalyst support10.1039/C2CP41680H ↗
22. Thermoelectric properties of pulsed current sintered nanocrystalline Al-doped ZnO by chemical vapour synthesis10.1039/C4TA04355C ↗
23. Facial synthesis of hexagonal metal oxide nanoparticles for low temperature ammonia gas sensing applications10.1039/C4RA12747A ↗
24. Ammonia sensors based on metal oxide nanostructures10.1088/0957-4484/18/20/205504 ↗
25. Morphological properties of Al-doped ZnO nano/microstructures10.1016/j.spmi.2016.01.019 ↗
26. Results in Physics Site location of Al-dopant in ZnO lattice by exploiting the structural and optical characterisation of ZnO: Al thin films10.1016/j.rinp.2016.01.010 ↗
27. Synthesis and characterization of aluminum doped zinc oxide nanostructures via hydrothermal route
28. Structural and optical investigation of Al doped ZnO nanoparticles synthesized by sol-gel process10.17485/ijst/2016/v9i12/87013 ↗
29. Synthesis and optical characterization of aluminum doped ZnO nanoparticles10.1016/j.ceramint.2014.04.057 ↗
30. Absorption-emission study of hydrothermally grown Al:ZnO nanostructures10.1016/j.jallcom.2011.06.012 ↗
31. Self-assembly fabrication of ZnO hierarchical micro/nanospheres for enhanced photocatalytic degradation of endocrine-disrupting chemicals10.1016/j.mssp.2013.05.008 ↗
32. Structure and photocatalytic activity of Ni-doped ZnO nanorods10.1016/j.materresbull.2011.04.008 ↗
33. Morphology-directed synthesis of ZnO nanostructures and their antibacterial activity10.1016/j.colsurfb.2012.12.056 ↗
34. The effect of Al doping on the morphology and optical property of ZnO nanostructures prepared by hydrothermal process10.1016/j.apsusc.2008.10.086 ↗
35. Non-fluorinated superhydrophobic and micro/nano hierarchical Al doped ZnO film: the effect of Al doping on morphological and hydrophobic properties10.1039/C5RA15952K ↗
36. Mechanism enhancing gas sensing and first-principle calculations of Al-doped ZnO nanostructures10.1039/c3ta11516j ↗
37. Simple method to synthesize novel mesoporous zinc oxide10.1007/s10854-012-0658-0 ↗
38. Novel and facile synthesis of randomly interconnected ZnO nanoplatelets using spray pyrolysis and their room temperature sensing characteristics10.1016/j.snb.2014.02.101 ↗
39. A highly selective room temperature ammonia sensor using spray deposited zinc oxide thin film10.1016/j.snb.2013.03.132 ↗
40. A highly selective and wide range ammonia sensor – nanostructured ZnO: Co thin film10.1016/j.mseb.2014.10.007 ↗
41. Room temperature ammonia sensing properties of ZnO thin films grown by spray pyrolysis: effect of Mg doping10.1016/j.jallcom.2016.07.050 ↗
42. Selective detection of ammonia using spray pyrolysis deposited pure and nickel doped ZnO thin films10.1016/j.apsusc.2014.05.075 ↗
43. Gas sensing mechanism of metal oxides: the role of ambient atmosphere, type of semiconductor and gases – a review
44. Cr2O3 -activated ZnO thick film resistors for ammonia gas sensing operable at room temperature10.1016/j.snb.2007.03.028 ↗
45. Measurements on room temperature gas sensing properties of CSA doped polyaniline – ZnO nanocomposites10.1016/j.measurement.2011.12.012 ↗
46. Lupan · 2007 · vol. 42 · 375
47. Gas sensing performance of the spray deposited Cd-ZnO thin films10.1016/j.jallcom.2014.01.200 ↗
48. Tailoring deep level surface defects in ZnO nanorods for high sensitivity ammonia gas sensing10.1021/jp5085857 ↗
49. Metal oxide nanostructures and their gas sensing properties: a Review10.3390/s120302610 ↗
50. ZnO nanoarchitectures: ultrahigh sensitive room temperature acetaldehyde sensor10.1016/j.snb.2015.09.103 ↗
51. Spray pyrolysis deposited zno nanopebbles as room temperature ammonia sensor10.1166/sl.2014.3317 ↗
52. Structural, morphological, and lpg sensing properties of al-doped zno thin film prepared by SILAR10.1155/2013/382380 ↗