The Preparation of WO<sub>3</sub>/Graphene Nanocomposites with the Wet Chemical Method and Their Photo-activated Toluene-sensing Property at Room Temperature

HUANG Qingwu; WU Jinjin; ZENG Dawen; SONG Wulin

doi:10.6054/j.jscnun.2022053

Journal of South China Normal University (Natural Science Edition) > 2022 > 54(4): 18-24. > DOI: 10.6054/j.jscnun.2022053

HUANG Qingwu, WU Jinjin, ZENG Dawen, SONG Wulin. The Preparation of WO₃/Graphene Nanocomposites with the Wet Chemical Method and Their Photo-activated Toluene-sensing Property at Room Temperature[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(4): 18-24. DOI: 10.6054/j.jscnun.2022053

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The Preparation of WO₃/Graphene Nanocomposites with the Wet Chemical Method and Their Photo-activated Toluene-sensing Property at Room Temperature

1.
The Analytical and Testing Center, Huazhong University of Science and Technology, Wuhan 430074, China
2.
School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

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Received Date: September 27, 2021
Available Online: September 21, 2022

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Abstract

Abstract

WO₃/graphene nanocomposites were successfully prepared with the simple low-temperature chemical synthesis method and they showed excellent photo-activated toluene gas-sensing properties at room temperature. The results showed that the addition of graphene would reduce the size of WO₃ lamella to about 300 nm and assemble it into a spherical structure. Graphene and WO₃ would form a chemical bond in the composite, effectively reducing the concentration of oxygen vacancies in WO₃. The photo-activated gas-sensing response of WO₃/graphene composite to 100 mL/m³ toluene under blue light was 3.3 times higher than that of pure WO₃. The material may have a good prospect for application in the explosive, flammable and toxic environment.
- WO₃,
- room-temperature gas sensing,
- X-ray photoelectron spectroscopy,
- toluene,
- oxygen vacancy,
- photo activation

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References (21)

References

[1]	AL-HASHEM M, AKBAR S, MORRIS P. Role of oxygen vacancies in nanostructured metal-oxide gas sensors: a review[J]. Sensors and Actuators B: Chemical, 2019, 301: 126845/11-24.
[2]	JI H, ZENG W, LI Y. Gas sensing mechanisms of metal oxide semiconductors: a focus review[J]. Nanoscale, 2019, 11(47): 22664-22684. doi: 10.1039/C9NR07699A
[3]	COMINI E, BARATTO C, FAGLIA G, et al. Quasi-one dimensional metal oxide semiconductors: preparation, characterization and application as chemical sensors[J]. Progress in Materials Science, 2009, 54(1): 1-67. doi: 10.1016/j.pmatsci.2008.06.003
[4]	KOLHE P S, MUTADAK P, MAITI N, et al. Synthesis of WO₃ nanoflakes by hydrothermal route and its gas sensing application[J]. Sensors and Actuators A: Physical, 2020, 304: 111877/1-8.
[5]	TOMI M, ETKA M, VOJKVKA L, et al. VOCs sensing by metal oxides, conductive polymers, and carbon-based materials[J]. Nanomaterials, 2021, 11(2): 552/1-33.
[6]	YAMAZOE N, SAKAI G, SHIMANOE K. Oxide semiconductor gas sensors[J]. Catalysis Surveys from Asia, 2003, 7(1): 63-75. doi: 10.1023/A:1023436725457
[7]	YUN Y H, IWASE A, BELL N J, et al. Semiconductor/reduced graphene oxide nanocomposites derived from photocatalytic reactions[J]. Catalysis Today, 2011, 164(1): 353-357. doi: 10.1016/j.cattod.2010.10.090
[8]	QIN J W, CAO M H, LI N, et al. Graphene-wrapped WO₃ nanoparticles with improved performances in electrical conductivity and gas sensing properties[J]. Journal of Materials Chemistry, 2011, 21(43): 17167-17174. doi: 10.1039/c1jm12692j
[9]	AN X Q, YU J C, WANG Y, et al. WO₃ nanorods/graphene nanocomposites for high-efficiency visible-light-driven photocatalysis and NO₂ gas sensing[J]. Journal of Materials Chemistry, 2012, 22(17): 8525-8531. doi: 10.1039/c2jm16709c
[10]	SRIVASTAVA S, JAIN K, SINGH V N, et al. Faster response of NO₂ sensing in graphene-WO₃ nanocomposites[J]. Nanotechnology, 2012, 23(20): 205501/1-7.
[11]	DENG L B, DING X H, ZENG D W, et al. Visible-light activate mesoporous WO₃ sensors with enhanced formaldehyde-sensing property at room temperature[J]. Sensors and Actuators B: Chemical, 2012, 163(1): 260-266. doi: 10.1016/j.snb.2012.01.049
[12]	CHOUCAIR M, THORDARSON P, STRIDE J A. Gram-scale production of graphene based on solvothermal synthesis and sonication[J]. Nature Nanotechnology, 2008, 4(1): 30-33.
[13]	ZHANG J, WU C Y, LI T, et al. Highly sensitive and ultralow detection limit of room-temperature NO₂ sensors using in-situ growth of PPy on mesoporous NiO nanosheets[J]. Organic Electronics, 2019, 77: 105504/1-9.
[14]	QIN Z Y, CHAO O, ZHANG J, et al. 2D WS₂ nanosheets with TiO₂ quantum dots decoration for high-performance ammonia gas sensing at room temperature[J]. Sensors and Actuators B: Chemical, 2017, 253: 1034-1042. doi: 10.1016/j.snb.2017.07.052
[15]	GAO F D, ZENG D W, HUANG Q W, et al. Chemically bonded graphene/BiOCl nanocomposites as a high-performance photocatalyst[J]. Physical Chemistry Chemical Physics, 2012, 4(2): 613-620.
[16]	HUANG Q W, ZENG D W, LI H Y, et al. Room temperature formaldehyde sensors with enhanced performance, fast response and recovery based on zinc oxide quantum dots/graphene nanocomposites[J]. Nanoscale, 2012, 4(18): 5651-5658. doi: 10.1039/c2nr31131c
[17]	MALARD L M, PIMENTA M A, DRESSELHAUS G, et al. Raman spectroscopy in graphene[J]. Physics Reports, 2009, 473(5/6): 51-87.
[18]	MATHEW S, JOSEPH B, SEKHAR B, et al. X-ray photoelectron and Raman spectroscopic studies of MeV proton irradiated graphite[J]. Nuclear Instruments and Methods in Physics Research Section B, 2008, 266(14): 3241-3246. doi: 10.1016/j.nimb.2008.03.233
[19]	DRESSELHAUS G, HOFMANN M. Raman spectroscopy as a probe of graphene and carbon nanotubes[J]. Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences, 2008, 366: 231-236.
[20]	RAMAN G, AHARON G. Synthesis of WO₃ nanoparticles using a biopolymer as a template for electrocatalytic hydrogen evolution[J]. Nanotechnology, 2008, 19(2): 025702/1-5.
[21]	HA J H, MURALIDHARAN P, KIM D K. Hydrothermal synthesis and characterization of self-assembled h-WO₃ nanowires/nanorods using EDTA salts[J]. Journal of Alloys and Compounds, 2009, 475(1/2): 446-451.