Enhanced gas-sensing performance of ZnO@In2O3 core@shell nanofibers prepared by coaxial electrospinning

Huang, Baoyu; Zhang, Zhenxing; Zhao, Changhui; Cairang, Limao; Bai, Jingwei; Zhang, Yaxiong; Mu, Xuemei; Du, Jingwei; Wang, Huan; Pan, Xiaojun; Zhou, Jinyuan

doi:10.1016/j.snb.2017.09.022

Cited by 124 publications

(50 citation statements)

References 52 publications

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“…Such core-shell structures can provide more functions. For example, heterojunction, which is a better way to transfer charge, can be formed between core and sheath [6,40,41]. For example, the sheath can be used to increase hydrophilicity, and the core to increase fiber strength.…”

Section: Coaxial Electrospinningmentioning

confidence: 99%

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The Development and Bio-applications of Multifluid Electrospinning

Wang¹,

Yu²,

Li³

et al. 2020

MAHIG

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Electrospinning is a potent "top-down" nanofabrication method and has been explored by many researchers in recent decades because it is an efficient, versatile, simple, and low-cost route to prepare nanofibers. Nanofiber membranes generated by electrospinning have been used in various fields including tissue engineering, wound dressing, biosensing, theranostics, and functional textiles. Here we summarize the development of multifluid electrospinning processes, including coaxial, Janus and triaxial electrospinning, and the applications of these techniques. Complex nanostructures prepared by multifluid electrospinning are considered. The key parameters that affect the electrospinning process are introduced, and a discussion of both equipment and solution parameters is presented.

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Section: Coaxial Electrospinningmentioning

confidence: 99%

“…Electrospun fibers can be used in sensors for gas detection, such as ethanol [41], acetone [40], H 2 [128], etc. However, when the sensor embedded in the body, it is a different environment and different substances needed to detect, such as dopamine [129], aflatoxin B1 [130], glucose [131,132], 25-hydroxy vitamin-D3 [133], urea [134], etc.…”

Section: Biosensormentioning

confidence: 99%

The Development and Bio-applications of Multifluid Electrospinning

Wang¹,

Yu²,

Li³

et al. 2020

MAHIG

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“…Accordingly, it appears that heterojunctions of ZnO with In 2 O 3 have good sensing performance to toxic gases. For example, ZnO–In 2 O 3 nanocomposites have been reported for the detection of n-butanol gas [20,21], trimethylamine [22], ammonia [23], acetone [24], ethanol [25], and NO 2 gas [26]. An enhanced gas response is generally attributed to modulation of the gas sensor resistance in heterojunctions between In 2 O 3 and ZnO, which have different work functions.…”

Section: Introductionmentioning

confidence: 99%

ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors

Kim

Mirzaei

et al. 2019

Sensors

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Pd nanoparticle-functionalized, xIn2O3 (x = 0.05, 0.1, and 0.15)-loaded ZnO nanofibers were synthesized by an electrospinning and ultraviolet (UV) irradiation method and assessed for their hydrogen gas sensing properties. Morphological and chemical analyses revealed the desired morphology and chemical composition of the synthesized nanofibers. The optimal gas sensor namely Pd-functionalized, 0.1In2O3-loaded ZnO nanofibers showed a very strong response to 172–50 ppb hydrogen gas at 350 °C, which is regarded as the optimal sensing temperature. Furthermore, the gas sensors showed excellent selectivity to hydrogen gas due to the much lower response to CO and NO2 gases. The enhanced gas response was attributed to the excellent catalytic activity of Pd to hydrogen gas, and the formation of Pd/ZnO and In2O3/ZnO heterojunctions, ZnO–ZnO homojunction, as well as the formation of PdHx. Overall, highly sensitive and selective hydrogen gas sensors can be produced based on a simple methodology using a synergistic effect from Pd functionalization and In2O3 loading in ZnO nanofibers.

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“…Coaxial ASDs can easily circumvent this problem by using a blank polymer as shell and placing the API in the core of the fiber (Yu et al, ). Since the first publication of the technology (Sun, Zussman, Yarin, Wendorff, & Greiner, ), coaxial electrospun core/shell nanofibers have been utilized for a variety of purposes including tissue engineering (Sperling, Reis, Pranke, & Wendorff, ; Wang et al, ), sensor technology (Huang et al, ), and production of lithium ion batteries (Zhang et al, ).…”

Section: Applications Of Scaled‐up Es In the Pharmaceutical Industrymentioning

confidence: 99%

Scale‐up of electrospinning technology: Applications in the pharmaceutical industry

Vass

Szabó

Domokos

et al. 2019

WIREs Nanomed Nanobiotechnol

135

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Recently, electrospinning (ES) of fibers has been shown to be an attractive strategy for drug delivery. One of the main features of ES is that a wide variety of drugs can be loaded into the fibers to improve their bioavailability, to enhance dissolution, or to achieve controlled release. Besides, ES is a continuous technology with low energy consumption, which can make it a very economic production alternative to the widely used freeze drying and spray drying. However, the low production rate of laboratory‐scaled ES has limited the industrial application of the technology so far. This article covers the various ES technologies developed for scaled‐up fiber production with an emphasis on pharmaceutically relevant examples. The methods used for increasing the productivity are complied, which is followed by a review of specific examples from literature where these technologies are utilized to produce oral drug delivery systems. The different technologies are compared in terms of their basic principles, advantages, and limitations. Finally, the different downstream processing options to prepare tablets or capsules containing the electrospun drug are covered as well. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies

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Enhanced gas-sensing performance of ZnO@In2O3 core@shell nanofibers prepared by coaxial electrospinning

Cited by 124 publications

References 52 publications

The Development and Bio-applications of Multifluid Electrospinning

The Development and Bio-applications of Multifluid Electrospinning

ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors

Scale‐up of electrospinning technology: Applications in the pharmaceutical industry

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