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'Nano-on-Micro' Approach Enables Synthesis of ZnO Nano-Cactus for Gas Sensing Applications

12 Pages Posted: 12 Oct 2020 Publication Status: Under Review

See all articles by Monsur Islam

Monsur Islam

Karlsruhe Institute of Technology - Institute for Microstructure Technology

Alok K. Srivastava

Defence Materials and Stores 푅&퐷 Establishment (DRDO)

Basavanakote Basavaraja

PES University - Department of Science Humanities

Ashutosh Sharma

Indian Institute of Technology (IIT), Kanpur - Department of Chemical Engineering

Abstract

We report a "nano-on-micro" approach for growth of a cactus-like nanostructures of zinc oxide (ZnO) for gas sensing application. We use electrospun polymeric fibers doped with catalyst nanoparticles as the template and employ a vapor-liquid-solid (VLS) method to growth of the ZnO nanostructures. Controlling the processing variables in the VLS process yields to growth of needle-like nanostructures of ZnO around the electrospun fibers, which resembles the needles of a cactus. The ZnO nano-cactus features wurtzite ZnO like crystal structure. We investigate the gas sensing capabilities of the ZnO nano-cactus. The ZnO nanostructures show high sensitivity and selectivity for sensing of ethanol gas. The "nano-on-micro" approach enables single step deposition of nanomaterials between electrodes during synthesis, which eliminates post-synthesis steps, and thus demonstrates better compatibility towards device integration for metal oxide nanostructures.

Keywords: Electrospinning, Zinc Oxide Nanostructure, Vapor-Liquid-Solid, Gas Sensor

Suggested Citation

Islam, Monsur and Srivastava, Alok K. and Basavaraja, Basavanakote and Sharma, Ashutosh, 'Nano-on-Micro' Approach Enables Synthesis of ZnO Nano-Cactus for Gas Sensing Applications (2020). Available at SSRN: https://ssrn.com/abstract=3708716 or http://dx.doi.org/10.2139/ssrn.3708716

Monsur Islam (Contact Author)

Karlsruhe Institute of Technology - Institute for Microstructure Technology

Hermannvon-Helmholtz-Platz 1
Eggenstein-Leopoldshafen, 76344
Germany

Alok K. Srivastava

Defence Materials and Stores 푅&퐷 Establishment (DRDO)

Basavanakote Basavaraja

PES University - Department of Science Humanities ( email )

Bangalore
India

Ashutosh Sharma

Indian Institute of Technology (IIT), Kanpur - Department of Chemical Engineering

Kharagpur
Kanpur, Uttar Pradesh 208016
India

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