Superior sensing sensitivity of ZnFe2O4 nano-octahedrons and sensing reaction molecule mechanism of polar ZnFe2O4 {111} surfaces
Source abstract
Abstract
A solvothermal process prepared ZnFe 2O 4 nano-octahedrons with {111} crystal planes exposed. In the gas sensing performance experiment, the product showed good sensing activity towards ethanol, acetone or triethylamine. The sensitivity of the nano-octahedrons is further enhanced by adding 3-coordinated Zn atoms (Zn 3c) on the exposed (111) crystal plane after the surface chloride ions and hydroxyl groups are removed by hydrogenation. The atomic-scale gas-sensitive mechanism is proposed using Zn 3c atoms as sensitive response active sites. It is believed that the Zn 3c plays three roles: adsorbing the O 2 molecule, generating free electrons, and catalyzing the reaction between O 2 and the gas being measured. The sensing mechanism, in which unsaturated metal atoms are reactive sites, explains the sensor`s increased sensitivity, which is the basis for developing a high-performance gas detector.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
Show source-provided references
1. Facet-dependent photocatalysis of nanosize semiconductive metal oxides and progress of their characterization10.1016/j.nantod.2017.12.011 ↗
2. An overview: facet-dependent metal oxide semiconductor gas sensors10.1016/j.snb.2018.08.129 ↗
3. Crystal facet engineering of photoelectrodes for photoelectrochemical water splitting10.1021/acs.chemrev.8b00584 ↗
4. Nanomaterials of high surface energy with exceptional properties in catalysis and energy storage10.1039/c0cs00176g ↗
5. Role of the exposed polar facets in the performance of thermally and UV activated ZnO nanostructured gas sensors10.1021/jp4061895 ↗
6. Direct growth of ZnO nanodisk networks with an exposed (0001) facet on Au comb-shaped interdigitating electrodes and the enhanced gas-sensing property of polar {0001} surfaces10.1016/j.snb.2014.01.001 ↗
7. Overall photocatalytic water splitting of crystalline carbon nitride with facet engineering10.1016/j.chempr.2020.09.009 ↗
8. Structural and electrochemical investigation of crystallite size controlled zinc ferrite (ZnFe2O4)10.1088/1361-6528/ac09a9 ↗
9. Photoelectrochemical properties of nanomultiple CaFe2O4/ZnFe2O4 p-n junction photoelectrodes10.1021/la304377z ↗
10. Oxygen vacancy-induced short-range ordering as a sole mechanism for enhanced magnetism of spinel ZnFe2O4 prepared via a one-step treatment
11. Dielectric, magnetic and electrical properties of ZnFe2O4 ceramics
12. Study on reduction and sulfidation of ZnFe2O4 desulfurizer at high temperature. Kao Hsiao Hua Hsueh Kung Ch'eng Hsueh Pao J
13. Hydrochloric acid-mediated synthesis of ZnFe2O4 small particle decorated one-dimensional perylene diimide s-scheme heterojunction with excellent photocatalytic ability10.1016/S1872-2067(21)63930-X ↗
14. One-step hydrothermal synthesis of ZnFe2O4 nano-octahedrons as a high capacity anode material for Li-ion batteries10.1007/s12274-012-0233-2 ↗
15. Controlled oxygen vacancies of ZnFe2O4 with superior gas sensing properties prepared via a facile one-step self-catalyzed treatment10.1016/j.snb.2019.03.056 ↗
16. ZnFe2O4 nanoparticles: synthesis, characterization, and enhanced gas sensing property for acetone10.1016/j.snb.2015.06.040 ↗
17. Highly sensitive H2S sensor based on solvothermally prepared spinel ZnFe2O4 nanoparticles10.1016/j.jallcom.2018.06.052 ↗
18. Annealing temperature-dependent porous ZnFe2O4 olives derived from bimetallic organic frameworks for high-performance ethanol gas sensing10.1016/j.matchemphys.2019.122379 ↗
19. Influence of iron non-stoichiometry on spinel zinc ferrite gas sensing properties10.1016/j.snb.2012.03.012 ↗
20. Size-tunable ferromagnetic ZnFe2O4 nanoparticles and their ethanol detection10.1016/j.apsusc.2019.144863 ↗
21. One-step room-temperature solid-phase synthesis of ZnFe2O4 nanomaterials and its excellent gas-sensing property10.1016/j.ceramint.2012.09.076 ↗
22. Nanosheet-assembled ZnFe2O4 hollow microspheres for high-sensitive acetone sensor10.1021/acsami.5b03537 ↗
23. Fabrication of ZnO/ZnFe2O4 hollow nanocages through metal organic frameworks route with enhanced gas sensing properties10.1016/j.snb.2017.04.114 ↗
24. Highly sensitive acetone gas sensor based on porous ZnFe2O4 nanospheres10.1016/j.snb.2014.09.080 ↗
25. Nanosheet-Assembled ZnFe2O4 Hollow Microspheres for High-Sensitive Acetone Sensor10.1021/acsami.5b03537 ↗
26. Ultra-high response acetone gas sensor based on ZnFe2O4 pleated hollow microspheres prepared by green NaCl template10.1016/j.snb.2022.131490 ↗
27. Production of MFe2O4 (M = Zn, Ni, Cu, Co and Mn) multiple cavities microspheres with salt template to assemble a high-performance acetone gas sensor
28. ZnFe2O4 tubes: synthesis and application to gas sensors with high sensitivity and low-energy consumption10.1016/j.snb.2006.02.034 ↗
29. Ethanol monitoring by ZnFe2O4 thin film obtained by spray pyrolysis10.1016/j.snb.2012.09.061 ↗
30. Highly sensitive formaldehyde chemical sensor based on hydrothermally prepared spinel ZnFe2O4 nanorods10.1016/j.snb.2012.06.006 ↗
31. . Porous ZnFe2O4 nanorods with net-worked nanostructure for highly sensor response and fast response acetone gas sensor10.1016/j.snb.2017.03.119 ↗
32. Increasing gas sensitivity of Co3O4 octahedra by tuning Co-Co3O4 (111) surface structure and sensing mechanism of 3-coordinated Co atom as an active center10.1007/s10854-020-03420-9 ↗
33. Enhancing gas sensitivity of CdO octahedrons having {111} facets by hydrogenation and sensing mechanism of 3-coordinated Cd atoms as the reactive centers10.1016/j.apsusc.2019.144868 ↗
34. The sensing reaction on the Ni-NiO (111) surface at atomic and molecule level and migration of electron10.1016/j.snb.2018.06.102 ↗
35. Hydrogenated Cu2O octahededrons with exposed {111} facets: Enhancing sensing performance and sensing mechanism of 1-coordinated Cu atom as a reactive center10.1016/j.snb.2020.127827 ↗
36. Increasing sensing sensitivity of the Fe-α-Fe2O3 (104) surface by hydrogenation and the sensing reaction molecule mechanism10.1016/j.snb.2018.10.088 ↗
37. Enhanced gas sensitivity and sensing mechanism of network structures assembled from alpha-Fe2O3 nanosheets with exposed {104} facets10.1021/acs.langmuir.7b00455 ↗
38. Enhancing gas sensing performances and sensing mechanism at atomic and molecule level of WO3 nanoparticles by hydrogenation10.1016/j.snb.2018.07.099 ↗
39. Enhanced sensing performance and sensing mechanism of hydrogenated NiO particles10.1016/j.snb.2017.04.109 ↗
40. Superior photocatalytic activities of NiO nano-octahedrons with loaded AgCl particles and charge separation between polar NiO {111} surfaces10.1016/j.apcatb.2015.02.007 ↗
41. ZnFe2O4 nanostructures: synthesis, growth mechanism, properties and applications10.1039/c0cc05862a ↗
42. A metastable Fe(A) termination at the ZnFe2O4 (001) surface10.1016/j.susc.2011.05.018 ↗
43. ZnFe2O4 surface electronic structures and stability from GGA+ U10.1016/j.susc.2012.02.003 ↗
44. Single gold atom adsorption on the ZnFe2O4 (111) surface10.1021/jp301313u ↗
45. Transmission electron microscopy of shape-controlled nanocrystals and their assemblies10.1021/jp993593c ↗
46. Effect of temperature on CO sensing response in air ambient by using ZnO nanorod-gated AlGaN/GaN high electron mobility transistors10.1016/j.snb.2012.10.051 ↗
47. Semiconductor metal oxide gas sensors: a review10.1016/j.mseb.2017.12.036 ↗
48. Gas sensing mechanisms of metal oxide semiconductors: a focus review10.1039/C9NR07699A ↗
49. Unusual Fe–H bonding associated with oxygen vacancies at the (001) surface of ZnFe2O410.1016/j.susc.2016.08.007 ↗
50. Competing reactions of selected atmospheric gases on ZnFe2O4 nanoparticles surfaces10.1039/C4CP02379J ↗
51. Reversible formation of 2D electron gas at the LaFeO3 / SrTiO3 interface via control of oxygen vacancies10.1002/adma.201604447 ↗
52. Role of oxygen vacancies in nanostructured metal-oxide gas sensors: a review10.1016/j.snb.2019.126845 ↗