journal article·2018-05

Hierarchically MoS2 nanospheres assembled from nanosheets for superior CO gas-sensing properties

Qu Zhou, Changxiang Hong, Yao Yao, Shahid Hussain, Lingna Xu, Qingyan Zhang, Yinggang Gui, Mingsong Wang

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Abstract

Abstract Hierarchical three dimensional MoS2nanostructures composed of small sheet-like nanostructures are successfully prepared using a simple two-step hydrothermal process with sodium dodecyl sulfate (SDS), as a surface modifier. The as-preparedMoS2nanospheres are characterized by XRD, BET, XPS, EDS, SEM and HRTEM. The gas–sensing properties of as–prepared MoS2nanostructures are tested at 175–230 °C temperatures for 50–500 ppm concentration range, using an efficient ceramic-tube sensor system via an intelligent gas testing system. A high response and selectivity towards carbon monoxide than other gases is observed. Comparative studies of MoS2nanostructures for different concentration of carbon monoxide gas and definite sensor-stability for different gases are studied, as well. The sensor fabrication and sensing mechanism is discussed as well.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Analytical Chemistry and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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