High‐Performance Field Effect Transistors Using Electronic Inks of 2D Molybdenum Oxide Nanoflakes

Alsaif, Manal M. Y. A.; Chrimes, Adam F.; Daeneke, Torben; Balendhran, Sivacarendran; Bellisario, Darin O.; Son, Young‐Woo; Field, Matthew R.; Zhang, Wei; Nili, Hussein; Nguyen, Emily P.; Latham, Kay; Embden, Joel van; Strano, Michael S.; Ou, Jian Zhen; Kalantar‐zadeh, Kourosh

doi:10.1002/adfm.201503698

Cited by 171 publications

(170 citation statements)

References 53 publications

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“…Considering that the graphene ink was already commercialized and cheaper than other noble metal-involved electrocatalyst, this electrochemical oxidation treatment shows brightening prospects of graphene ink coatings for sensing application. Moreover, this work demonstrated other 2D material-based inks also could be applied for sensing application [44,45]. In order to verify the practical performance of the proposed method, the GI/GCE was used for determining PA in tablet.…”

Section: Resultsmentioning

confidence: 85%

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Xie

Zheng

et al. 2018

Electronics

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Graphene ink is a commercialized product in the graphene industry with promising potential application in electronic device design. However, the limitation of the graphene ink is its low electronic performance due to the ink preparation protocol. In this work, we proposed a simple post-treatment of graphene ink coating via electrochemical oxidation. The electronic conductivity of the graphene ink coating was enhanced as expected after the treatment. The proposed electrochemical oxidation treatment also exposes the defects of graphene and triggered an electrocatalytic reaction during the sensing of paracetamol (PA). The overpotential of redox is much lower than conventional PA redox potential, which is favorable for avoiding the interference species. Under optimum conditions, the graphene ink-based electrochemical sensor could linearly detect PA from 10 to 500 micro molar (µM), with a limit of detection of 2.7 µM.

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Section: Resultsmentioning

confidence: 85%

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Xie

Zheng

et al. 2018

Electronics

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“…Different from other typical metal oxide semiconductors (SnO 2 or ZnO), the gas detection process of MoO 3 dominated mainly by the surface lattice oxygen rather than the chemisorbed oxygen, as shown in the schematic Figure 4a. Alsaifa et al [48][49][50] insist that hydrogen ions etc. can be intercalated into van der Waals's gaps of α-MoO 3 , accompanied with the lower oxidation state.…”

Section: Resultsmentioning

confidence: 98%

Diverse Adsorption/Desorption Abilities Originating from the Nanostructural Morphology of VOC Gas Sensing Devices Based on Molybdenum Trioxide Nanorod Arrays

Cong

Sugahara

Wei

et al. 2016

Adv Materials Inter

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attention from researchers because of their advantages of sensitivity, rapid response, and inexpensive production. [9,10] Recently, considerable effort has been devoted to developing much simpler routes to control the shape and grain size of SMO to achieve a higher surface-to-area ratio and unique surface chemistry behavior to improve sensing performance. [11][12][13] Among the metal oxides, molybdenum trioxide (MoO 3 ) is one of the most desirable for use in gas sensors because of its indirect wide band gap of 3.5 eV. [14][15][16][17] MoO 3 -based gas analyzing devices show excellent gas sensing properties for several kinds of gas species [18][19][20][21][22][23][24] because of their special quantum size effect, surface effect, high reactivity, and the polyvalency of molybdate. In particular, MoO 3 nanostructures, such as MoO 3 nanobelts, flower-like microstructured MoO 3 , and net-like MoO 3 porous architectures synthesized by the hydrothermal route, exhibit appealing sensing properties for VOC vapors. [25][26][27] The gas sensing properties of MoO 3 thin film fabricated by radiofrequency (RF) sputtering have also been investigated. [28] These reports showed the nanostructures possessed typical sensing performance for VOC vapors; however, these nanostructures need to be processed with two or more steps, which is time consuming. For instance, these nanostructures need to be transferred or arranged on a ceramic substrate and then annealed to obtain substantial growth/adhesion on the substrate. To increase the VOC gas sensing performance of nanostructures, they needed to be loaded with noble metal particles (e.g., Au, Nanorod arrays gas sensors are attracting much scientific and engineering interest because of their excellent sensing performance arising from their unique nanostructures. In this work, large-scale random 3D networks of ultrafine single-crystal α-MoO 3 nanorod arrays are applied as gas sensors. The arrays are spontaneously grown by a simple single-step solution route. A prompt response and obvious discrimination of ethanol, methanol, isopropanol, and acetone vapors at 573 K are investigated via the modulation of the resistance of the gas sensors. The sensitivity, response time, and recovery time of the sensors strongly depend on the specific morphologies of the nanorod arrays, such as length, number, and coverage of nanorods in the 3D network. A reaction mechanism in which the 3D-network nanorod arrays adsorb and react with the target molecules more readily than the seed layer is proposed to explain the different response and recovery times of the sensors. These random 3D-network nanorod arrays with functionally tunable morphology are promising for universal application as gas sensors for detecting various vapors, and provide valuable insights for the production of fast, largescale, low-cost, and simple synthesis of sensing devices.

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“…The peaks at 673, 826 and 982 cm À1 could be assigned to the triply coordinated oxygen (Mo 3 -O) stretching mode, the doubly coordinated oxygen (Mo 2 -O) stretching mode, and the terminal oxygen (Mo 6+ -O) stretching mode, respectively. 52 Second, the classical Drude model could be taken into consideration for assessing the red-shift result. For both the XPS Mo 3d spectra, as-prepared (Fig.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…52,53 The free electron concentration increases by furthering illumination with a defect state arising within the bandgap. From eqn (1) we can observe that the LSPR frequency strongly depends on both the free electron concentration and the scattering of electron motion in a given medium.…”

Section: Optical Propertiesmentioning

confidence: 99%

Preparation of MoO₃ QDs through combining intercalation and thermal exfoliation

Wang

Yang

et al. 2016

J. Mater. Chem. C

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Lots of top-down approaches by weakening the van der Waals interaction between adjacent layers and breaking up the covalent chemical bonds in each layer have been reported to prepare QDs of layered materials due to the stacked structures. However, much attention has been focused on graphene and layered transition-metal dichalcogenides (TMDs), seldomly on layered transition-metal oxides (TMOs). Herein, a modified top-down method combining intercalation and thermal exfoliation is reported to prepare high-yield QDs of layered MoO 3 . Alkylamine was first intercalated into MoO 3 layers to weaken the van der Waals forces. Then, the covalent bonds in each MoO 3 layer were broken down under a sudden increase in gas pressure generated by the decomposition of alkylamines after rapid heating. These fractured particles were further incised to QDs by sonication. The as-prepared MoO 3 QD dispersion showed a plasmon resonance after simulated solar light illumination. Surprisingly, their plasmon peak red shifted with an extended illumination time, which was different from the reported MoO 3 nanosheets. This reported method is expected to extend to other QDs of layered materials providing that their bulk materials can also be intercalated.

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High‐Performance Field Effect Transistors Using Electronic Inks of 2D Molybdenum Oxide Nanoflakes

Cited by 171 publications

References 53 publications

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Diverse Adsorption/Desorption Abilities Originating from the Nanostructural Morphology of VOC Gas Sensing Devices Based on Molybdenum Trioxide Nanorod Arrays

Preparation of MoO₃ QDs through combining intercalation and thermal exfoliation

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High‐Performance Field Effect Transistors Using Electronic Inks of 2D Molybdenum Oxide Nanoflakes

Cited by 171 publications

References 53 publications

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

Diverse Adsorption/Desorption Abilities Originating from the Nanostructural Morphology of VOC Gas Sensing Devices Based on Molybdenum Trioxide Nanorod Arrays

Preparation of MoO3 QDs through combining intercalation and thermal exfoliation

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Preparation of MoO₃ QDs through combining intercalation and thermal exfoliation