Facile synthesis of ultrafine rGO/WO3 nanowire nanocomposites for highly sensitive toxic NH3 gas sensors
Source abstract
Abstract
Abstract We introduce a facile and scalable synthesis of rGO/WO3 nanocomposites by hydrothermal method for gas sensing applications. The characterization of rGO/WO3 nanocomposites by some advanced techniques such as scanning electron microscopy, high resolution transmission electron microscopy and Raman spectroscopy revealed that high quality rGO/WO3 nanocomposites included single crystal WO3 nanowires (average diameter of 10 nm) entangled by thin rGO layers. Sensing measurements demonstrated that the rGO/WO3 nanocomposite-based sensor can detect highly toxic NH3 gas at low concentrations ranging from 20 ppm to 500 ppm and fulfills practical applications. The developed gas sensors based on rGO/WO3 nanocomposites have significant application prospects in environment pollution monitoring at detection limit of about 138 ppb. We also discussed the gas sensing mechanism of the rGO/WO3 nanocomposites based on the p-n junction.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (77)
Show source-provided references
1. A new detector for gaseous components using semiconductive thin films10.1021/ac60191a001 ↗
2. Resistance-based H2S gas sensors using metal oxide nanostructures: a review of recent advances10.1016/j.jhazmat.2018.06.015 ↗
3. Superior triethylamine detection at room temperature by {-112} faceted WO3 gas sensor10.1016/j.jhazmat.2019.120876 ↗
4. Carrier Mobility-Dominated Gas Sensing: A Room-Temperature Gas-Sensing Mode for SnO2 Nanorod Array Sensors10.1021/acsami.8b03953 ↗
5. Sensitive Gas-Sensing by Creating Adsorption Active Sites: Coating an SnO2 Layer on Triangle Arrays10.1021/acsami.8b08078 ↗
6. Flexible room-temperature NH3 sensor for ultrasensitive, selective, and humidity-independent gas detection10.1021/acsami.8b09169 ↗
7. Wearable, Flexible Ethanol Gas Sensor Based on TiO2 Nanoparticles-Grafted 2D-Titanium Carbide Nanosheets10.1021/acsanm.8b01975 ↗
8. Korotcenkov · 2013
9. Versatile breath sampler for online gas sensor analysis10.1016/j.snb.2018.07.094 ↗
10. Breath sensors for health monitoring10.1021/acssensors.8b00937 ↗
11. Hierarchical cobalt nanorods shelled with nickel oxide vertically attached 3D architecture as non-binder and free-standing sensor for sensitive non-enzymatic glucose detection10.1016/j.materresbull.2019.110504 ↗
12. Rational design of sensitivity enhanced and stability improved TEA gas sensor assembled with Pd nanoparticles-functionalized In2O3 composites10.1016/j.snb.2019.01.029 ↗
13. Rational design of Au/Co3O4-functionalized W18O49 hollow heterostructures with high sensitivity and ultralow limit for triethylamine detection10.1016/j.snb.2018.12.119 ↗
14. Nanoporous and crystal evolution in nickel oxide nanosheets for enhanced gas-sensing performance10.1016/j.snb.2018.06.095 ↗
15. General and scalable route to synthesize nanowire-structured semiconducting metal oxides for gas-sensor applications10.1016/j.jallcom.2012.09.051 ↗
16. Heterostructures of hematite-sensitized W18O49 hollow spheres for improved acetone detection with ultralow detection limit10.1016/j.snb.2019.03.015 ↗
17. Ultralow power consumption gas sensor based on a self-heated nanojunction of SnO2 nanowires10.1039/C8RA06061D ↗
18. Gas nanosensor design packages based on tungsten oxide: mesocages, hollow spheres, and nanowires10.1088/0957-4484/22/48/485503 ↗
19. Crystalline mesoporous tungsten oxide nanoplate monoliths synthesized by directed soft template method for highly sensitive NO2 gas sensor applications10.1016/j.materresbull.2012.10.047 ↗
20. Preparing large-scale WO3 nanowire-like structure for high sensitivity NH3 gas sensor through a simple route10.1016/j.cap.2010.11.002 ↗
21. Enhancement of gas-sensing characteristics of hydrothermally synthesized WO3 nanorods by surface decoration with Pd nanoparticles10.1016/j.snb.2015.09.108 ↗
22. WO3 based gas sensors
23. Effect of film thickness on gas sensing properties of sprayed WO 3 thin films10.1039/C7NJ00963A ↗
24. Ammonia-gas-Sensing characteristics of WO3/Carbon nanotubes nanocomposites: effect of nanotube content and sensing mechanism10.1166/sam.2016.2716 ↗
25. Full-layer controlled synthesis and transfer of large-scale monolayer graphene for nitrogen dioxide and Ammonia Sensing10.1080/00032719.2013.832270 ↗
26. Synthesis and Characterization of Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) for Gas Sensing Application10.1002/masy.201700006 ↗
27. Recent development in nanocarbon materials for gas sensor applications10.1016/j.snb.2018.07.040 ↗
28. Enhancing the response of NH3 graphene-sensors by using devices with different graphene-substrate distances10.1016/j.snb.2018.03.164 ↗
29. Structural effect of SWCNTs grown by PECVD towards NH3 gas sensing and field emission properties10.1016/j.materresbull.2019.110532 ↗
30. Nanowire structured SnOx–SWNT composites: High performance sensor for NOx detection10.1016/j.snb.2009.07.053 ↗
31. Tin-oxide nanotubes for gas sensor application fabricated using SWNTs as a template10.1166/jnn.2008.1387 ↗
32. Fabrication and NO2 gas-sensing properties of reduced graphene oxide/WO3 nanocomposite films10.1016/j.talanta.2014.09.034 ↗
33. Porous reduced graphene oxide (rGO)/WO3 nanocomposites for the enhanced detection of NH3 at room temperature10.1039/C9NA00048H ↗
34. Graphene–metal oxide nanohybrids for toxic gas sensor: A review10.1016/j.snb.2015.07.070 ↗
35. Superior enhancement of NO2 gas response using n - p - n transition of carbon nanotubes/SnO2 nanowires heterojunctions10.1016/j.snb.2016.07.143 ↗
36. Outstanding gas-sensing performance of graphene/SnO2 nanowire Schottky junctions10.1063/1.4887486 ↗
37. One-step synthesis of Ag/SnO2/rGO nanocomposites and their trimethylamine sensing properties10.1016/j.materresbull.2019.02.019 ↗
38. Facile synthesis of reduced graphene oxide/hexagonal WO3 nanosheets composites with enhanced H2S sensing properties10.1016/j.snb.2016.02.134 ↗
39. WO3 nanorods/graphene nanocomposites for high-efficiency visible-light-driven photocatalysis and NO2 gas sensing10.1039/c2jm16709c ↗
40. WO3 nanolamellae/reduced graphene oxide nanocomposites for highly sensitive and selective acetone sensing10.1007/s10853-018-2558-z ↗
41. Pd–WO3/reduced graphene oxide hierarchical nanostructures as efficient hydrogen gas sensors10.1016/j.ijhydene.2014.03.117 ↗
42. Tungsten Oxide Urchin-Flowers and Nanobundles: Effect of Synthesis Conditions and Heat Treatment on Assembly and Gas-Sensing Characteristics10.1166/sam.2014.1854 ↗
43. Excellent detection of H2S gas at ppb concentrations using ZnFe2O4 nanofibers loaded with reduced graphene oxide10.1016/j.snb.2018.11.157 ↗
44. Micro-wheels composed of self-assembled tungsten oxide nanorods for highly sensitive detection of low level toxic chlorine gas10.1039/C5RA00916B ↗
45. Synthesis of nanowire bundle-like WO3-W18O49 heterostructures for highly sensitive NH3 sensor application10.1016/j.jhazmat.2018.04.020 ↗
46. Thermal stability of hexagonal tungsten trioxide in air10.1007/s10973-007-8601-y ↗
47. Investigations of nonstoichiometric tungsten oxide nanoparticles10.1006/jssc.2001.9319 ↗
48. Facile synthesis of reduced graphene oxide/hexagonal WO3 nanosheets composites with enhanced H2S sensing properties10.1016/j.snb.2016.02.134 ↗
49. Faster response of NO2 sensing in graphene–WO3 nanocomposites10.1088/0957-4484/23/20/205501 ↗
50. Nanocrystalline anatase TiO2 /reduced graphene oxide composite films as photoanodes for photoelectrochemical water splitting studies: the role of reduced graphene oxide10.1039/C5CP06707C ↗
51. Fabrication of conductive graphene oxide-WO3 composite nanofibers by electrospinning and their enhanced acetone gas sensing properties10.1016/j.snb.2018.02.026 ↗
52. Synthesis and characterization of WO3/graphene nanocomposites for enhanced photocatalytic activities by one-step in-situ hydrothermal reaction
53. Preparation of WO3-reduced graphene oxide nanocomposites with enhanced photocatalytic property10.1016/j.ceramint.2015.01.022 ↗
54. Photocatalytic WO3 /TiO 2 nanowires: WO 3 polymorphs influencing the atomic layer deposition of TiO210.1039/C6RA18899K ↗
55. Tailoring of enhanced interfacial polarization in WO3 nanorods grown over reduced graphene oxide synthesized by a one-step hydrothermal method10.1039/C7RA00730B ↗
56. Size- And shape-controlled conversion of tungstate-based inorganic-organic hybrid belts to WO3nanoplates with high specific surface areas10.1002/smll.200800205 ↗
57. Highly efficient visible-light-driven photocatalytic hydrogen production of CdS-cluster-decorated graphene nanosheets10.1021/ja2025454 ↗
58. Facile Synthesis and Photocatalytic Performance of WO3/rGO Nanocomposite for Degradation of 1-Naphthol10.1142/S1793292015500721 ↗
59. Facile synthesis of reduced graphene oxide/WO3 nanoplates composites with enhanced photocatalytic activity10.1016/j.matlet.2014.01.094 ↗
60. Electrical and gas-sensing properties of WO3 semiconductor material10.1016/S0038-1101(01)00126-5 ↗
61. H2S gas sensing properties of CuO-functionalized WO3 nanowires10.1016/j.ceramint.2014.03.120 ↗
62. Kanan · 2009 · 8158
63. Hydrothermal Synthesis and Ammonia Sensing Properties of WO3/Fe2O3Nanorod Composites10.1007/s11664-017-5283-5 ↗
64. Fabrication of highly selective tungsten oxide ammonia sensors10.1149/1.1393270 ↗
65. Sensitivity Enhancement of Ammonia gas sensor based on hydrothermally synthesized rGO/WO3 nanocomposites
66. Synthesis of Graphene Oxide Interspersed in Hexagonal WO3Nanorods for High-Efficiency Visible-Light Driven Photocatalysis and NH3 Gas Sensing10.3389/fchem.2019.00722 ↗
67. Ammonia sensing by closely packed WO3 microspheres with oxygen vacancies10.1016/j.chemosphere.2018.04.050 ↗
68. Bilayer SnO2–WO3 nanofilms for enhanced NH3 gas sensing performance10.1016/j.mseb.2017.08.004 ↗
69. Gas sensing characteristics of Fe-doped tungsten oxide thin films10.1016/j.snb.2012.04.032 ↗
70. Surface interaction of WO3 nanocrystals with NH3. Role of the exposed crystal surfaces and porous structure in enhancing the electrical response10.1039/c3ra46726k ↗
71. Thermal stability of WS2 flakes and gas sensing properties of WS2/WO3 composite to H2, NH3 and NO210.1016/j.snb.2016.12.069 ↗
72. NH3 sensing properties and mechanism of Ru-loaded WO3 nanosheets10.1007/s10854-018-9221-y ↗
73. Polyaniline anchored MWCNTs on fabric for high performance wearable Ammonia sensor10.1021/acssensors.8b00589 ↗
74. Work function analysis of gas sensitive WO3 layers with Pt doping10.1016/j.snb.2012.12.062 ↗
75. P–n junction characteristics of graphene oxide and reduced graphene oxide on n-type Si(111)10.1016/j.jpcs.2013.02.007 ↗
76. Work function tuning of reduced graphene oxide thin films10.1021/acs.jpcc.5b09234 ↗
77. Reduced graphene oxide (rGO) based wideband optical sensor and the role of Temperature, Defect States and Quantum Efficiency10.1038/s41598-018-21686-2 ↗