Effects of varying the amount of reduced graphene oxide loading on the humidity sensing performance of zinc oxide/reduced graphene oxide nanocomposites on cellulose filter paper

Subki, A Shamsul Rahimi A; Mamat, M. H.; Musa, M.Z.; Banu, I. B. Shameem; Vasimalai, N.; Ahmad, Mohd Khairul; Nafarizal, N.; Suriani, A. B.; Mohamad, A.; Birowosuto, Muhammad Danang; Rusop, M.

doi:10.1016/j.jallcom.2022.166728

Cited by 23 publications

(5 citation statements)

References 97 publications

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“…The response and recovery times were 4.2 s and 3.3 s, respectively, as calculated from the transient response plot in Figure 9 f. The synergistic and combined effects of doping and nanocomposite contributed to the increased performance of this sensor. When the TiO 2 microsphere structure increased the adsorption surface area, adding rGO enabled efficient electron transportation between the TiO 2 microspheres, owing to the excellent electron mobility property of rGO [ 66 ]. The rGO acted as a conductive substance to improve the nanocomposite’s conduction.…”

Section: Resultsmentioning

confidence: 99%

Formation of a Nanorod-Assembled TiO2 Actinomorphic-Flower-like Microsphere Film via Ta Doping Using a Facile Solution Immersion Method for Humidity Sensing

et al. 2023

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This study fabricated tantalum (Ta)-doped titanium dioxide with a unique nanorod-assembled actinomorphic-flower-like microsphere structured film . The Ta-doped TiO2 actinomorphic-flower-like microsphere (TAFM) was fabricated via the solution immersion method in a Schott bottle with a home-made improvised clamp. The samples were characterised using FESEM, HRTEM, XRD, Raman, XPS, and Hall effect measurements for their structural and electrical properties. Compared to the undoped sample, the rutile-phased TAFM sample had finer nanorods with an average 42 nm diameter assembled to form microsphere-like structures. It also had higher oxygen vacancy sites, electron concentration, and mobility. In addition, a reversed double-beam photoacoustic spectroscopy measurement was performed for TAFM, revealing that the sample had a high electron trap density of up to 2.5 μmolg−1. The TAFM showed promising results when employed as the resistive-type sensing film for a humidity sensor, with the highest sensor response of 53,909% obtained at 3 at.% Ta doping. Adding rGO to 3 at.% TAFM further improved the sensor response to 232,152%.

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Section: Resultsmentioning

confidence: 99%

Formation of a Nanorod-Assembled TiO2 Actinomorphic-Flower-like Microsphere Film via Ta Doping Using a Facile Solution Immersion Method for Humidity Sensing

et al. 2023

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“…As shown in Figure d, deconvolution of the O 1s peaks resulted in three peaks at approximately 530.8 eV (CO), 531.6 eV (Si–O–Si), and 532.7 eV(C–O). The oxygen and nitrogen chemical bonds enhance the hydrophilicity of the nanocomposite, which improves humidity sensitivity . Si 2p peaks position at 102.1, 103.0, and 103.9 eV were attributed to the chemical bonds Si–N, Si–C, and Si–O, respectively …”

Section: Resultsmentioning

confidence: 99%

Synthesis of Guanine/Vermiculite Two-Dimensional Nanocomposites for Wireless Humidity Sensing in Nut Storage Environment

Hong,

Zhao,

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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“…This behavior was found in other composite GO materials. [26,27] The device time response characteristics were evaluated with the device response behaviors between humidity values of 11%RH and 93 %RH, as shown in Fig. 4(b).…”

Section: Resultsmentioning

confidence: 99%

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

Thiwawong,

Maboonchauy,

Onlaor

et al. 2023

J. Mater. Sci. Appl. Energy.

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This work aimed to study the preparation of graphene oxide (GO) and zinc oxide (ZnO) composited films by electrostatic spray deposition for use in fabricated humidity sensors. The physical properties of prepared films were examined with X-ray diffraction, Raman spectroscopy, and scanning electron microscope. Subsequently, a humidity sensor was fabricated using a low-cost interdigitated electrode pattern with the print circuit board. The humidity sensing behaviors were assessed with fixed humidity levels in a saturated aqueous salt solution in the humidity range of 11 – 93%RH. The impedance value of the device was obtained with a precision LCR meter. It was found that the composited film of 0.50 %wt. GO demonstrated the highest humidity response with optimized humidity sensitivity, hysteresis error, and response/recovery times of 2.68 ´ 103, 4.89%, and 228/19 s, respectively. Moreover, the equivalent circuits for the prepared device at various humidity levels were acquired with impedance spectroscopy to propose the mechanism for the humidity sensing of the device.

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Effects of varying the amount of reduced graphene oxide loading on the humidity sensing performance of zinc oxide/reduced graphene oxide nanocomposites on cellulose filter paper

Cited by 23 publications

References 97 publications

Formation of a Nanorod-Assembled TiO2 Actinomorphic-Flower-like Microsphere Film via Ta Doping Using a Facile Solution Immersion Method for Humidity Sensing

Formation of a Nanorod-Assembled TiO2 Actinomorphic-Flower-like Microsphere Film via Ta Doping Using a Facile Solution Immersion Method for Humidity Sensing

Synthesis of Guanine/Vermiculite Two-Dimensional Nanocomposites for Wireless Humidity Sensing in Nut Storage Environment

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

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