Facile metal-organic frameworks-templated fabrication of hollow indium oxide microstructures for chlorine detection at low temperature.

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ID: 84343
2020
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Abstract
Metal oxides with the hollow microstructure by the facile synthetic strategy are hopeful in applications for photocatalysis, supercapacitor, and gas sensor owing to their large surface areas, porosity ratio and rich active sites. In this work, indium oxide porous hollow rods (InO PHRs) are successfully prepared using metal-organic frameworks (MOFs) as the template. The morphology of InO PHRs is hexagonal hollow micro-rods with a porous structure. The investigation on the gas-sensing performance reveals that the InO PHRs sensor displays outstanding sensitivity and selectivity toward 10 ppm chlorine gas (Cl) at low operational temperature (160 °C). Furthermore, the InO PHRs sensor displays a low detection limit (3.2 ppb) and short response and recovery time (38/13 s). The unique morphology and abundant oxygen vacancies are conduced to the excellent gas-sensing activities, which is benefited from the utilization and decomposition of In-MOFs precursor. In addition, the gas sensing mechanism of reducing gases and oxidizing gases is deduced in detail for the InO PHRs sensor.
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ma2020facilejournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ma, Jiangwei;Fan, Huiqing;Zheng, Xiaokun;Wang, Hao;Zhao, Nan;Zhang, Mingchang;Yadav, Arun Kumar;Wang, Weijia;Dong, Wenqiang;Wang, Shuren;
Journal Journal of hazardous materials
Year 2020
DOI
S0304-3894(20)30003-0
URL
Keywords
gas-sensing cl(2) in(2)o(3) mil-68 (in) rods

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