High performance ethanol and acetone gas sensing behavior of FeCo2O4/graphene hybrid sensors prepared by facile hydrothermal route

Published on Dec 1, 2020in Optik2.443
· DOI :10.1016/J.IJLEO.2020.165571
S. Rathinavel3
Estimated H-index: 3
(Paavai Engineering College),
G. Balaji3
Estimated H-index: 3
(Paavai Engineering College),
S. Vadivel7
Estimated H-index: 7
(Paavai Engineering College)
Source
Abstract
Abstract Historically, production of high-performance gas sensing materials has promised to satisfy the worldwide research interests with the increasingly enhanced gas sensor devices. In this paper we are adopting a facile hydrothermal strategy to prepare the ternary FeCo2O4/graphene hybrid nanocomposites. The spinal phase of FeCo2O4 with spherical shaped morphology was obtained through XRD, SEM and TEM images which confirms. In addition, an average particle size within the range of 30-40 nm was observed for the individual spherical shaped morphology. The Raman and XPS studies also explore the vibration modes and chemical composition of the FeCo2O4/graphene composites. The BET surface area and BJH pore size of FeCo2O4/graphene composites is estimated to be 93.2 m2/g and 19.45 nm, respectively. Such high surface area will provide the active path to gas molecules which will increase the efficiency of gas sensing. Measurement of ethanol and acetone gas sensing using clad altered fiber optic sensors and sensitivities for ethanol and acetone gases are 22 and 43 counts/ppm, respectively. Also discussed is the proposed gas sensing mechanism.
📖 Papers frequently viewed together
References36
Newest
#1Feng Dong (TJU: Tianjin University)H-Index: 6
#2Xianhua Liu (TJU: Tianjin University)H-Index: 19
Last. Pingping Zhang (Tianjin Agricultural University)H-Index: 14
view all 9 authors...
Abstract Macaroon-like FeCo2O4 nanomaterial was prepared and used as electrocatalyst in direct glucose alkaline fuel cell (DGAFC), which exhibited high catalytic activity towards glucose oxidation reaction. Maximum power density of 35.91 W m−2 was achieved in the DGAFC equipped with a FeCo2O4 modified activated carbon (AC) anode, which was almost 151% higher than the control. Physical and electrochemical characterizations were performed to provide further understanding of the origin of its high ...
Source
#1Yaqi Bao (China University of Geosciences)H-Index: 1
#2Ming Qin (NPU: Northwestern Polytechnical University)H-Index: 16
Last. Hongjing Wu (NPU: Northwestern Polytechnical University)H-Index: 51
view all 5 authors...
Abstract In this work, porous NiCo 2 O 4 nanosheets have been fabricated by a facile hydrothermal method. The morphology as well as crystalline structure of products was tested by XRD, FTIR, N 2 adsorption-desorption isotherms and TEM. The composite exhibited excellent adsorptive removal capacity toward Congo red (CR), and the maximum adsorption capacity was up to 961.5 mg/g. The best adsorption performance was achieved in the CR solution without adjusting of pH. Adsorption accords with Langmuir...
Source
#1S. Devendiran (National Institute of Technology, Tiruchirappalli)H-Index: 1
Abstract The gas sensing characteristics of nanocrystalline samarium oxide (Sm2O3) clad modified fiber optic gas sensor are reported with and without a carrier gas (air) in the radiation mode (detection of a light radiating from the clad modified surface) and transmission mode (detection of a light transmitted through the fiber) for ammonia, ethanol, methanol and acetone gases. When the carrier gas present, the sensor output in the radiation mode increases for methanol and ammonia whereas it dec...
Source
#1M. Manjula (National Institute of Technology, Tiruchirappalli)H-Index: 3
#2Balasubramanian Karthikeyan (National Institute of Technology, Tiruchirappalli)H-Index: 23
Abstract Sensing characteristics of Ho (1, 3 and 5% mol) – doped Bi 2 O 3 clad-modified fibre optic gas sensor are studied for ammonia, ethanol, methanol and acetone gases at ambient temperature. Bi 2 O 3 doped with all concentrations of Ho shows good gas response to acetone, whereas, 1% and 3% mol of Ho show to methanol. Ammonia and ethanol show very poor gas response for all the doping concentrations. The highest gas sensitivity and gas selectivity property are shown with 3% mol of Ho with ace...
Source
#1Munirpallam A. Subramanian (Bishop Heber College)H-Index: 54
#2V. Violet Dhayabaran (Bishop Heber College)H-Index: 9
Last. M. Shanmugavadivel (Bishop Heber College)H-Index: 4
view all 4 authors...
Abstract The paper reports the preparation and fiber optic gas sensing characteristic of clad modified Zn3(VO4)2 nanopowder. Ultrafine zinc vanadate nanopowder was obtained by surfactant assisted solution combustion method. The structural characterization and morphological studies of Zn3(VO4)2 nanoparticles were done by X-ray diffraction, scanning electron microscope, transmission electron microscope, FT-IR spectra and diffuse reflectance spectra (DRS). Clad modified fiber optic gas sensors made...
Source
#1M. Manjula (National Institute of Technology, Tiruchirappalli)H-Index: 3
#2Balasubramanian Karthikeyan (National Institute of Technology, Tiruchirappalli)H-Index: 23
Last. Dillibabu Sastikumar (National Institute of Technology, Tiruchirappalli)H-Index: 21
view all 3 authors...
Abstract Gas sensing properties of nanocrystalline bismuth oxide clad – modified fiber optic sensor is reported for ammonia, ethanol, methanol and acetone gasses at room temperature. The output of sensor increases or decreases for certain gasses when the concentration of the gas is increased. The sensor exhibits high response and good selectivity to methanol gas. Time response characteristics of the sensor are also reported.
Source
#1Abhay Gusain (BARC: Bhabha Atomic Research Centre)H-Index: 9
#2Nirav Joshi (USP: University of São Paulo)H-Index: 16
Last. Dinesh K. Aswal (BARC: Bhabha Atomic Research Centre)H-Index: 38
view all 4 authors...
Abstract Flexible gas sensor for Nitric Oxide (NO) detection has been realized using conducting polymer poly[ N -9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) as the gas sensing material. This has been achieved by the deposition of PCDTBT on flexible BOPET substrate using the simple technique of spin coating. PCDTBT has been found to be highly selective for NO gas with a very good response for upto 5 ppm level of NO gas (toxic limit - 25 ppm). The...
Source
#2Lingmin YuH-Index: 2
#3Shengzhong Liu (SNNU: Shaanxi Normal University)H-Index: 60
Abstract Ag quantum dots (QDs) sensitized WO 3 nanosheets have been synthesized by a facile two-step wet-chemical method and the subsequent annealing treatment. The structures, morphologies and surface compositions of the materials were characterized by XRD, FESEM, FETEM, and XPS techniques. FETEM results indicating that the monodispersed Ag QDs with an average size of 4.5 nm are uniformly coated on the surface of WO 3 nanosheets. Gas sensing test results show that the gas sensing performance, i...
Source
#1M. Silambarasan (Annamalai University)H-Index: 3
#2P. S. Ramesh (Annamalai University)H-Index: 12
Last. D. Geetha (Annamalai University)H-Index: 18
view all 3 authors...
Hexagonal and bundle like spinel nickel cobaltite nanostructures has been successfully prepared using two different precipitants such as oxalic acid and potassium hydroxide by facile one-step route followed by calcinated at 400 °C in air, and their structural, optical and electrochemical properties are proposed in this work. The optical band gap of these materials was estimated around 3.88 and 4.07 eV. Room temperature photoluminescence measurements reveal near band emission enhancement in both ...
Source
#1Mousa FarhadianH-Index: 8
#2P. SangpourH-Index: 15
Last. Ghader HosseinzadehH-Index: 13
view all 3 authors...
In this study, a WO3–multiwalled carbon nanotube nanocomposite has been prepared for the first time by in situ liquid phase process. The prepared nanocomposite was used for photodegradation of dilute solution of naphthalene under visible light irradiation. Based on our results, comparing photocatalytic activity of WO3 nanoparticle with WO3–multiwalled carbon nanotube nanocomposite showed that the photodegradation of naphthalene is negligible by using pure WO3 nanoparticles while, composition of ...
Source
Cited By4
Newest
#1Yanhan Che (Dalian Maritime University)H-Index: 1
#2Guoqing Feng (Dalian Maritime University)H-Index: 5
Last. Chengwen Song (Dalian Maritime University)H-Index: 17
view all 5 authors...
Source
#1Sarvesha Shetgaonkar (Goa University)
#2Akshay V. Salkar (Goa University)H-Index: 6
Last. Pranay P. Morajkar (Goa University)H-Index: 12
view all 3 authors...
It is well established that the excessive and uncontrolled use of fossil fuels and organic chemicals have put a risk to the earth's environment and the life that sustains within it. Carbon-free, sustainable, alternative energy technologies have therefore become the prime focus of current research. Smart inorganic materials have emerged as the potential solution to suffice energy needs and remediate the organic pollutants discharged to the environment. One such promising, versatile material is Fe...
Source
#1Fanli Meng (Northeastern University (China))H-Index: 48
#2Xiaozhi Li (Northeastern University (China))H-Index: 1
Last. Jin Li (Northeastern University (China))H-Index: 22
view all 6 authors...
Xylene is a toxic carcinogen, which may irritate eyes and respiratory tract, or damage the central nervous system. However, the traditional semiconductor gas sensor can only detect the ppm level of xylene gas, which cannot meet the building air quality monitoring requirements. Therefore, the development of low concentration gas detection of xylene gas sensor is necessary. In this article, a one-step hydrothermal method for the preparation of reduced graphene oxide (rGO)/Co3O4 nanocomposite was r...
Source
#1LF Gorup (University of Rio Grande)H-Index: 4
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.