Facile synthesis of flower-like α-Fe2O3/ZnFe2O4 architectures with self-assembled core-shell nanorods for superior TEA detection
Source abstract
Abstract
Abstract Uniform flower-like α-Fe2O3 architectures with self-assembled core-shell nanorods are constructed and successfully prepared via the facile process. The concentration of Fe salt plays a great significance for morphological evolution from nanorods to self-assembled microflowers. Flower-like α-Fe2O3/ZnFe2O4 consisting of α-Fe2O3 core and ZnFe2O4 shell nanorods are derived from FeOOH/ZIF-8 precursors. The detailed studies reveal that the tunable growth of ZIF-8 nanoparticles on three-dimensional FeOOH microflowers at room temperature and the availble calcination regulation are responsible for the formation of core-shell Fe2O3/ZnFe2O4 composites. The highest response value of flower-like α-Fe2O3/ZnFe2O4 architectures to 100 ppm triethylamine (TEA) has been improved to 141 at 280 °C, which is calculated to be 6.2 times compared with flower-like α-Fe2O3 architectures (22.7). The enhanced gas-sensing mechanism of α-Fe2O3/ZnFe2O4 composites can be attributed to the typical microflowers structures, the large specific surface area, the effective heterojunctions between α-Fe2O3 core and ZnFe2O4 shell, and the improved electron transfer process.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Iron oxide chemistry and applications · Multiferroics and related materials · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Gas adsorption at metal sites for enhancing gas sensing performance of ZnO@ZIF-71 nanorod arrays10.1021/acs.langmuir.8b02642 ↗
2. Gas sensing properties of ZnO nanostructures (flowers/rods) synthesized by hydrothermal method10.1016/j.snb.2019.04.083 ↗
3. Synergistic enhancement of ammonia gas-sensing properties at low temperature by compositing carbon nanotubes with tungsten oxide nanobricks10.1016/j.vacuum.2019.108861 ↗
4. One-dimensional porous Co3O4 rectangular rods for enhanced acetone gas sensing properties10.1016/j.snb.2019.126746 ↗
5. Facile synthesis of ZnFe2O4/α-Fe2O3 porous microrods with enhanced TEA-sensing performance10.1016/j.jallcom.2017.12.068 ↗
6. Synthesis and improved gas sensing properties of ZnO/α-Fe2O3 microflowers assembled with nanosheets10.1016/j.matlet.2017.03.036 ↗
7. Hierarchical porous nanorod@core-shell α-Fe2O3/TiO2 microspheres: synthesis, characterization, and gas-sensing applications10.1016/j.apsusc.2019.03.198 ↗
8. Highly enhanced sensing properties for ZnO nanoparticle-decorated round-edged α-Fe2O3 hexahedrons10.1021/acsami.5b01071 ↗
9. Enhanced selective acetone-sensing performance of hierarchical hollow SnO2/α-Fe2O3 microcubes10.1039/C9TC03879E ↗
10. 3D α-Fe2O3 nanorods arrays@graphene oxide nanosheets as sensing materials for improved gas sensitivity10.1016/j.cej.2019.03.254 ↗
11. Probing the morphology-device relation of Fe2O3 nanostructures towards photovoltaic and sensing applications10.1039/C1NR10856E ↗
12. Self-assembled 3D flowerlike iron oxide nanostructures and their application in water treatment10.1002/adma.200600504 ↗
13. Self-assembled 3D porous flowerlike α-Fe2O3 hierarchical nanostructures: synthesis, growth mechanism, and their application in photocatalysis10.1039/c2dt11822j ↗
14. Hydrothermal synthesis and visible-light photocatalytic activity of novel cage-like ferric oxide hollow spheres10.1021/cg800941d ↗
15. Synthesis and application of iron-based nanomaterials as anodes of lithium-ion batteries and supercapacitors10.1039/C8TA01683F ↗
16. ZnO@ZIF-8 core-shell microspheres for improved ethanol gas sensing10.1016/j.snb.2018.12.145 ↗
17. Sonocrystallization of ZIF-8 on electrostatic spinning TiO2 nanofibers surface with enhanced photocatalysis property through synergistic effect10.1021/acsami.6b05746 ↗
18. Ultra-sensitive sensing platform based on Pt-ZnO-In2O3 nanofibers for detection of acetone10.1016/j.snb.2018.05.161 ↗
19. MOF-templated synthesis of porous Co3O4 concave nanocubes with high specifc surface area and their gas sensing properties10.1021/am405858v ↗
20. RGO-α-Fe2O3/β-FeOOH ternary heterostructure with urchin-like morphology for efcient oxygen evolution reaction10.1016/j.jelechem.2019.04.069 ↗
21. The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical α-Fe2O3 structures exposed by (001) and non-(001) planes10.1016/j.cej.2016.10.108 ↗
22. Ultra-high lithium storage capacity achieved by porous ZnFe2O4/α-Fe2O3 micro-octahedrons10.1016/j.nanoen.2014.05.001 ↗
23. Rational design of ZnFe2O4/In2O3 nanoheterostructures: efficient photocatalyst for gaseous 1,2-dichlorobenzene degradation and mechanistic insight10.1021/acssuschemeng.6b00601 ↗
24. ZnFe2O4 nanotubes: microstructure and magnetic properties10.1021/jp507991e ↗
25. Tube in tube ZnO/ZnCo2O4 nanostructure synthesized by facile single capillary electrospinning with enhanced ethanol gas-sensing properties10.1039/C6RA28585F ↗
26. Oxygen vacancy defects engineering on Ce-doped α-Fe2O3 gas sensor for reducing gases10.1016/j.snb.2019.127165 ↗
27. Single-crystalline porous nanoplates-assembled ZnO hierarchical microstructure with superior TEA sensing properties10.1016/j.snb.2019.04.026 ↗
28. Rational design of sensitivity enhanced and stability improved TEA gas sensor assembled with Pd nanoparticles-functionalized In2O3 composites10.1016/j.snb.2019.01.029 ↗
29. Highly efficient gas sensor using a hollow SnO2 microfiber for triethylamine detection10.1021/acssensors.7b00276 ↗
30. Two-dimensional transition metal dichalcogenides and metal oxide hybrids for gas sensing10.1021/acssensors.8b01077 ↗
31. Ultra-thin nanosheets-assembled hollowed-out hierarchical α-Fe2O3 nanorods: synthesis via an interface reaction route and its superior gas sensing properties10.1016/j.snb.2016.05.012 ↗
32. Variation of shell thickness in ZnO-SnO2 core-shell nanowires for optimizing sensing behaviors to CO, C6H6, and C7H8 gases10.1016/j.snb.2019.127150 ↗
33. Spray pyrolysis deposition of ZnFe2O4/Fe2O3 composite thin films on hierarchical 3-D nanospikes for efficient photoelectrochemical oxidation of water10.1021/acs.jpcc.7b05266 ↗
34. UV-enhanced NO2 gas sensing properties of SnO2-core/ZnO-shell nanowires at room temperature10.1021/am400500a ↗