Facile synthesis and gas sensing properties of tubular hierarchical ZnO self-assembled by porous nanosheets

Fan, Faying; Tang, Pinggui; Wang, Yuanyuan; Feng, Yongjun; Chen, Aifan; Luo, Ruixian; Li, Dianqing

doi:10.1016/j.snb.2015.03.048

Cited by 111 publications

(58 citation statements)

References 50 publications

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“…Fan et al [52] prepared a 3D porous rod-like ZnO nanostructure by a simple precipitation method followed by calcination at 300 • C. These rod-like hierarchical structures were made by plenty of nanosheets with a thickness of 5-16 nm, interleaved with each other to form a net-like and wide open structure ( Figure 5a). The ZnO powder mixed with ethanol was coated onto an alumina tube with a pair of Au electrodes and then aged at 200 • C. An excellent sensitivity to ethanol ( Figure 5b) was reported, much higher than smooth 1D nanorods.…”

Section: Ethanolmentioning

confidence: 99%

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Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications

Leonardi

2017

Chemosensors

147

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Two-dimensional (2D) nanomaterials, due to their unique physical and chemical properties, are showing great potential in catalysis and electronic/optoelectronic devices. Moreover, thanks to the high surface to volume ratio, 2D materials provide a large specific surface area for the adsorption of molecules, making them efficient in chemical sensing applications. ZnO, owing to its many advantages such as high sensitivity, stability, and low cost, has been one of the most investigated materials for gas sensing. Many ZnO nanostructures have been used to fabricate efficient gas sensors for the detection of various hazardous and toxic gases. This review summarizes most of the research articles focused on the investigation of 2D ZnO structures including nanosheets, nanowalls, nanoflakes, nanoplates, nanodisks, and hierarchically assembled nanostructures as a sensitive material for conductometric gas sensors. The synthesis of the materials and the sensing performances such as sensitivity, selectivity, response, and recovery times as well as the main influencing factors are summarized for each work. Moreover, the effect of mainly exposed crystal facets of the nanostructures on sensitivity towards different gases is also discussed.

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Section: Ethanolmentioning

confidence: 99%

“…Fan et al [52] prepared a 3D porous rod-like ZnO nanostructure by a simple precipitation method followed by calcination at 300 °C. These rod-like hierarchical structures were made by plenty of nanosheets with a thickness of 5-16 nm, interleaved with each other to form a net-like and wide open structure ( Figure 5a).…”

Section: Ethanolmentioning

confidence: 99%

Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications

Leonardi

2017

Chemosensors

147

View full text Add to dashboard Cite

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“…However, the use of these techniques often requires expensive and bulky instruments, skilled operators and tedious sample preparation processes. Therefore, the design of miniaturized smart sensors for fast and real-time detection has become an important and urgent strategy in the modern industrial production 2,3 . Up to date, several types of gas sensors, including semiconductor gas sensors, liquid electrolyte gas sensors, solid electrolyte gas sensors and catalytic combustion gas sensors etc., have been developed for commercial applications 4 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Star-Shaped Lead Sulfide (PbS) Nanomaterials and theirs Gas-Sensing Properties

et al. 2016

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Star-shaped PbS nanomaterials are synthesized by a hydrothermal method. Morphology and structure of the PbS nanomaterials are analyzed by SEM, HRTEM and XRD. Gas-sensing properties of the as-prepared PbS sensor are also systematically investigated. The results show star-shaped PbS nanostructure consists of four symmetric arms in the same plane and demonstrate good crystallinity. With the increase of ethanol concentration, the sensitivity of the PbS sensor significantly increases and demonstrates an almost linear relationship at the optimal operating temperature of 400 o C. Moreover, the fast response-recovery towards ethanol is also observed, which indicates its great potential on ethanol detection.

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“…For another different morphology of ZnO hierarchical structures, Wang et al [93] prepared nest-like 3D ZnO porous structures through annealing the zinc hydroxide carbonate precursor, which was obtained by a one-pot hydrothermal process ( Figure 9). A three-dimensional hierarchical porous ZnO with a tubular structure has been prepared by calcining a tubular hierarchical hydrozincite precursor [94]. A bladed bundle-like architecture has been fabricated from many precursors, such as ZnO·0.33ZnBr 2 ·1.74H 2 O, zinc glycerol and Zn-based hydroxide double salts (Zn-HDS) [95][96][97][98].…”

Section: Precursor or Self-templating Strategiesmentioning

confidence: 99%

A Review on the Fabrication of Hierarchical ZnO Nanostructures for Photocatalysis Application

et al. 2016

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Semiconductor photocatalysis provides potential solutions for many energy and environmental-related issues. Recently, various semiconductors with hierarchical nanostructures have been fabricated to achieve efficient photocatalysts owing to their multiple advantages, such as high surface area, porous structures, as well as enhanced light harvesting. ZnO has been widely investigated and considered as the most promising alternative photocatalyst to TiO 2 . Herein, we present a review on the fabrication methods, growth mechanisms and photocatalytic applications of hierarchical ZnO nanostructures. Various synthetic strategies and growth mechanisms, including multistep sequential growth routes, template-based synthesis, template-free self-organization and precursor or self-templating strategies, are highlighted. In addition, the fabrication of multicomponent ZnO-based nanocomposites with hierarchical structures is also included. Finally, the application of hierarchical ZnO nanostructures and nanocomposites in typical photocatalytic reactions, such as pollutant degradation and H 2 evolution, is reviewed.

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Facile synthesis and gas sensing properties of tubular hierarchical ZnO self-assembled by porous nanosheets

Cited by 111 publications

References 50 publications

Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications

Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications

Synthesis of Star-Shaped Lead Sulfide (PbS) Nanomaterials and theirs Gas-Sensing Properties

A Review on the Fabrication of Hierarchical ZnO Nanostructures for Photocatalysis Application

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