ZIF-67 MOF-derived Unique Double-shelled Co3O4/NiCo2O4 Nanocages for Superior Gas-sensing Performances

Publication date: Available online 14 October 2019Source: Sensors and Actuators B: ChemicalAuthor(s): Jing Tan, Shahid Hussain, Chuanxin Ge, Mingsong Wang, Sufaid Shah, Guiwu Liu, Guanjun QiaoAbstractUnique nanostructures of bimetallic organic materials assisted by new organic frameworks are promising candidates for gas sensor applications. For the first time, we successfully report the design and synthesis of Co3O4/NiCo2O4 double-shelled nanocages (DSNCs) via a facile template-assisted method. The DSNCs were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), thermogravimetric (TG) analysis, and transmission electron microscopy (TEM). The nanocages had a high surface-to-volume ratio and a high surface area of 103 m2 g−1. The as-prepared nanostructures were exposed to various reducing gases at different controlled gas concentrations and working temperatures. The fabricated sensors exhibited high selectivity and gas-sensing responses toward H2S at an optimal temperature of 250 °C for 100 ppm. The outstanding gas-sensing performance revealed the potential application of the unique double-shelled hollow nanostructures to the gas sensor industry.Graphical abstract
Source: Sensors and Actuators B: Chemical - Category: Chemistry Source Type: research

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This article is licensed under aCreative Commons Attribution-NonCommercial 3.0 Unported Licence.Da-Jiang Liu, Peter Michael Spurgeon, Jiyoung Lee, Theresa L Windus, Patricia Ann Thiel, James W. Evans Experimental data from low-temperature Scanning Tunneling Microscopy (LTSTM) studies on coinage metal surfaces with very low coverages of S is providing new insights into metal-S interactions. A previous LTSTM study... The content of this RSS Feed (c) The Royal Society of Chemistry
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Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
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