Simple and low-cost synthesis of Al-doped ZnO/CuO composite nanowires for highly efficient hydration level sensing
Source abstract
Abstract
Abstract In this paper, we report on our investigation of the impact of Al doping on the primary physical properties of SILAR fabricated CuO/ZnO composite nanowires. Our characterization on surface and structural analysis showed that we were able to lightly dope the nanocomposites effectively using the SILAR method, which is cost-effective and repeatable. Conductivity of the Al-doped films changed significantly which resulted in greater sensing response for hydration. We utilized artificial sweat solutions to characterize the sensing response of the films and we demonstrated that sensing response almost doubled with Al doping. Transient response of sweat application also showed that response times were less than 10 s for 2% Al-doping. We conclude that Al doping on CuO/ZnO nanocomposites is an excellent candidate to be utilized for hydration sensing through sweat.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (60)
Show source-provided references
1. Wearable sweat sensors: background and current trends
2. Impact of mild dehydration on wellness and on exercise performance10.1038/sj.ejcn.1601897 ↗
3. Impaired cognitive function and mental performance in mild dehydration European10.1038/sj.ejcn.1601898 ↗
4. Real-time sweat analysis via alternating current conductivity of artificial and human sweat
5. Highly improved hydration level sensing properties of copper oxide films with sodium and potassium doping10.1016/j.apsusc.2015.11.136 ↗
6. Wearable sweat sensors10.1038/s41928-018-0043-y ↗
7. Tattoo based wearable electrochemical devices: a review10.1002/elan.201400537 ↗
8. Sweat sensing in the smart wearables era: towards integrative, multifunctional and body-compliant perspiration analysis10.1016/j.sna.2019.07.020 ↗
9. Improved sensing response of nanostructured CuO thin films towards sweat rate monitoring: Effect of Cr doping
10. M. Chung, G. Fortunato, N. Radacsi, Wearable flexible sweat sensors for healthcare monitoring: a review, J. R. Soc. Interface 16: 20190217.10.1098/rsif.2019.0217 ↗
11. A wearable conductivity sensor for wireless real-time sweat monitoring10.1016/j.snb.2015.12.034 ↗
12. Sweat test for cystic fibrosis: wearable sweat sensor vs. standard laboratory test10.1016/j.jcf.2018.03.005 ↗
13. Wearable temporary tattoo sensor for real-time trace metal monitoring in human sweat10.1016/j.elecom.2014.11.024 ↗
14. Flexible chloride sensor for sweat analysis10.1016/j.proeng.2015.08.588 ↗
15. Wearable sweat band for noninvasive levodopa monitoring10.1021/acs.nanolett.9b02478 ↗
16. Enhanced hydration detection properties of nanostructured CuO films by annealing10.1016/j.mee.2016.07.016 ↗
17. Zn-doping to improve the hydration level sensing performance of CuO films10.1007/s00339-018-2223-z ↗
18. Al-Sn doped ZnO thin film nanosensor for monitoring NO2 concentration10.1016/j.jtusci.2016.02.002 ↗
19. Low temperature LPG sensing properties of wet chemically grown zinc oxide nanoparticle thin film10.1016/j.snb.2010.01.044 ↗
20. Enhanced ammonia sensing characteristics of Cr doped CuO nanoboats10.1016/j.jallcom.2015.09.046 ↗
21. N. MiyauchiZnO-based visible-light photocatalyst: band gap engineering and multi electron reduction by co-catalyst
22. Spray deposited nanostructured CuO thin films: influence of substrate temperature and annealing process
23. Synthesis, characterization and gas-sensing properties of SILAR deposited ZnO-CdO nano-composite thin film10.1016/j.snb.2014.09.111 ↗
24. Advantage of dual-confined plasmas over conventional and facing-target plasmas for improving transparent-conductive properties in Al doped ZnO thin films10.1016/j.surfcoat.2015.06.084 ↗
25. Simultaneous enhancement of carrier mobility and concentration via tailoring of Al-chemical states in Al-ZnO thin films10.1063/1.4922732 ↗
26. N. MiyauchiZnO-based visible-light photocatalyst: band gap engineering and multi electron reduction by co-catalyst
27. Preparation of highly efficient Al-doped ZnO photocatalyst by combustion synthesis10.1016/j.cap.2012.11.008 ↗
28. Photo catalytic property of Pt-CuO nanostructure films prepared by wet-chemical route and photochemical deposition method10.1007/s10854-016-5091-3 ↗
29. The role of Triton X-100 as a surfactant on the CdO nanostructures grown by the SILAR method10.1016/j.jallcom.2017.02.130 ↗
30. Solution-processed nanostructured ZnO/CuO composite films and improvement its physical properties by lustrous transition metal silver doping10.1007/s10854-020-03999-z ↗
31. Facile preparation and characterization of nanostructured ZnO/CuO composite thin film for sweat concentration sensing applications10.1016/j.mssp.2020.105428 ↗
32. EN 1811:2011 · 2011
33. Bowler · 2011 · 22 · 12001
34. Growth of vertically aligned one dimensional ZnO nanowire arrays on sol–gel derived ZnO thin films10.1016/j.jpcs.2014.06.013 ↗
35. Al doping in ZnO nanowires enhances ultraviolet emission and suppresses broad defect emission10.1016/j.jlumin.2019.03.049 ↗
36. Brenner · 1963
37. X-ray-Based spectroscopic techniques for characterization of polymer nanocomposite materials at a molecular level10.3390/polym12051053 ↗
38. Relative effect of electronegativity on formation of high entropy alloys10.1179/1743133615Y.0000000004 ↗
39. The influence of particle size on the surface roughness of pharmaceutical excipient compacts10.1016/j.msea.2005.06.060 ↗
40. Effect of Sn doping on the structural, optical, electrical and anticancer properties of WO3 nanoplates10.1016/j.ceramint.2016.04.010 ↗
41. Variation of the key morphological, structural, optical and electrical properties of SILAR CdO with alkaline earth Ca2+ ions doping10.1016/j.ceramint.2019.05.210 ↗
42. ZnO–CuO nanocomposites with improved photocatalytic activity for environmental and energy applications10.1007/s11664-018-6582-1 ↗
43. The role of Al doping on ZnO nanowire evolution and optical band gap tuning10.1007/s00339-019-3005-y ↗
44. Ammonia gas sensing properties of Al doped ZnO thin films10.1016/j.sna.2020.112193 ↗
45. Role of co-doping on structural, optical and magnetic properties of nano-crystalline ZnO thin films
46. A facile method for preparing transparent, conductive, and paper-like silver nanowire films
47. Ramamurthi Influence of Mn doping on structural, optical and electrical properties of CdO thin films prepared by cost effective spray pyrolysis method10.1016/j.mssp.2014.05.005 ↗
48. Maabong Effect of doping concentration on the properties of aluminum doped zinc oxide thin films prepared by spray pyrolysis for transparent electrode applications10.1016/j.ceramint.2010.09.042 ↗
49. Characteristics of nickel-doped zinc oxide thin films prepared by sol–gel method10.1016/j.surfcoat.2008.06.078 ↗
50. Influence of surface roughness on contact angle hysteresis and spreading work10.1007/s00396-020-04680-x ↗
51. The efect of surface roughness on the contact line and splashing dynamics of impacting droplets10.1038/s41598-019-51490-5 ↗
52. Effect of platinum doping on the morphology and sensing performance for CuO-based gas sensor
53. Design of selective gas sensors using additive-loaded In2O3 hollow spheres prepared by combinatorial hydrothermal reactions10.3390/s111110603 ↗
54. Fluid balance and endurance exercise performance”10.1249/00149619-200308000-00006 ↗
55. Improved gas sensing performance of Al doped ZnO/CuO nanocomposite based ammonia gas sensor10.1016/j.mseb.2017.10.012 ↗
56. Highly sensitive gas sensor based on Al-doped ZnO nanoparticles for detection of dimethyl methylphosphonate as a chemical warfareagent stimulant10.1016/j.snb.2015.06.076 ↗
57. Heterostructural CuO−ZnO nanocomposites: a highly selective chemical and electrochemical NO2 sensor10.1021/acsomega.9b01382 ↗
58. Reduced graphene oxide decorated with CuO-ZnO hetero-junctions:towards high selective gas-sensing property to acetone10.1039/C4TA03931A ↗
59. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides10.1107/S0567739476001551 ↗
60. Biener · Surface Chemistry in Nanoscale Materials, Materials · 2009 · 2 · 2404