Design of flower-like V2O5 hierarchical nanostructures by hydrothermal strategy for the selective and sensitive detection of xylene

Cao, Peijiang; Gui, XingGao; Navale, S.T.; Han, Shun; Xu, Wangying; Fang, Ming; Liu, Xinke; Zeng, Yanwei; Liu, Wenjun; Zhu, Deliang; Stadler, Florian J.

doi:10.1016/j.jallcom.2019.152378

Cited by 35 publications

(9 citation statements)

References 48 publications

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“…The XRD peaks are positioned at 15.5°, 20.25°, 21.7°, 26.25°, 30.2°, 33.45°, 41.9°, 47.15°, 49.05°, 55°, 61.85°, and 71.5° corresponding to the crystal planes ( 200), ( 100), ( 110), ( 101), ( 400), ( 111), ( 020), ( 600), ( 021), ( 012), ( 402) and ( 231), respectively, and presented orthorhombic crystal structure of both samples as per JCPDS card no. 01-0359 and match with literature reports (Cao et al 2020). It can be clearly observed that Ni-doping has influenced diffraction patterns, i.e.…”

Section: X-ray Diffraction Analysis (Xrd)supporting

confidence: 88%

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

Rafique¹,

Hamza

Shakil

et al. 2020

Appl Nanosci

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Water pollution has become serious threat for environment and society. Due to failure of different methods, semiconductor photocatalyst based advance oxidation process has attracted a huge interest for wastewater treatment. In this work, Nickel-doped vanadium pentaoxide (Ni doped-V 2 O 5 ) is synthesized using easy and facile sol-gel synthesis route and the synthesized material is characterized through various characterization tools. The orthorhombic phase was detected in which decrease in crystallite size is observed with addition of dopant. The SEM analysis revealed that layered structure is formed with sufficient surface area and Energy Dispersive X-ray spectroscopy (EDX) represented the purity of samples. UV-Vis and Photoluminescence spectroscopies provide the information about the absorption and band gap of material and confirm the visible light response of the prepared catalysts. The photodegradation of RhB was evaluated through employing Ni doped-V 2 O 5 photocatalyst which exhibited the 100% dye removal and high photostability. The factors which can affect the performance of catalytic activity are also studied to optimize the parameters for maximum dye removal. The kinetic study was also performed which showed that the synthesized materials follows pseudo first order kinetics.

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Section: X-ray Diffraction Analysis (Xrd)supporting

confidence: 88%

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

Rafique¹,

Hamza

Shakil

et al. 2020

Appl Nanosci

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“…The thickness of the prepared nanosheet is about 3 nm, and its small size effect will lead to a large surface area and promote the combination of ethanol molecules and sensitive materials to obtain high gas sensing. In addition, the excellent gas sensing of the In 2 O 3 -8 h gas sensor is mainly attributed to its unique nanostructure, namely porous In 2 O 3 nanosheet-assembled micro-flowers [ 49 , 50 ], as shown in Figure 11 . On one hand, the flower-like structure of In 2 O 3 -8 h can provide more oxygen molecular adsorption sites to produce more adsorbed oxygen, and the large amount of oxygen negative ions generated at the same time can thicken the electron depletion layer, resulting in an increase in the resistance of the gas sensor.…”

Section: Resultsmentioning

confidence: 99%

Ethanol Sensors Based on Porous In2O3 Nanosheet-Assembled Micro-Flowers

Qin

Yuan

Gao

et al. 2020

Sensors

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By controlling the hydrothermal time, porous In2O3 nanosheet-assembled micro-flowers were successfully synthesized by a one-step method. The crystal structure, microstructure, and internal structure of the prepared samples were represented by an x-ray structure diffractometry, scanning electron microscopy, and transmission electron microscopy, respectively. The characterization results showed that when the hydrothermal time was 8 h, the In2O3 nano materials presented a flower-like structure assembled by In2O3 porous nanosheets. After successfully preparing the In2O3 gas sensor, the gas sensing was fully studied. The results show that the In2O3 gas sensor had an excellent gas sensing response to ethanol, and the material prepared under 8 h hydrothermal conditions had the best gas sensing property. At the optimum working temperature of 270 °C, the highest response value could reach 66, with a response time of 12.4 s and recovery time of 10.4 s, respectively. In addition, the prepared In2O3 gas sensor had a wide detection range for ethanol concentration, and still had obvious response for 500 ppb ethanol. Furthermore, the gas sensing mechanism of In2O3 micro-flowers was also studied in detail.

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“…On the other hand, semiconducting metal oxides (SMO)-based gas sensors have advantages such as high response, high stability, relatively fast dynamics, simple fabrication, and low costs. So, they are very popular for the detection of various gases [4][5][6][7][8][9][10][11][12][13][14]. However, they work at high temperatures and show poor selectivity.…”

Section: Semiconducting Metal Oxide (Smo)-based Gas Sensorsmentioning

confidence: 99%

Effect of Ag Addition on the Gas-Sensing Properties of Nanostructured Resistive-Based Gas Sensors: An Overview

Navale

Shahbaz

Mirzaei

et al. 2021

Sensors

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Nanostructured semiconducting metal oxides (SMOs) are among the most popular sensing materials for integration into resistive-type gas sensors owing to their low costs and high sensing performances. SMOs can be decorated or doped with noble metals to further enhance their gas sensing properties. Ag is one of the cheapest noble metals, and it is extensively used in the decoration or doping of SMOs to boost the overall gas-sensing performances of SMOs. In this review, we discussed the impact of Ag addition on the gas-sensing properties of nanostructured resistive-based gas sensors. Ag-decorated or -doped SMOs often exhibit better responsivities/selectivities at low sensing temperatures and shorter response times than those of their pristine counterparts. Herein, the focus was on the detection mechanism of SMO-based gas sensors in the presence of Ag. This review can provide insights for research on SMO-based gas sensors.

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Design of flower-like V2O5 hierarchical nanostructures by hydrothermal strategy for the selective and sensitive detection of xylene

Cited by 35 publications

References 48 publications

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

Ethanol Sensors Based on Porous In2O3 Nanosheet-Assembled Micro-Flowers

Effect of Ag Addition on the Gas-Sensing Properties of Nanostructured Resistive-Based Gas Sensors: An Overview

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