MOFs-Derived Porous NiFeO Nano-Octahedrons with Hollow Interiors for an Excellent Toluene Gas Sensor.

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ID: 4937
2019
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Abstract
Toluene is extensively used in many industrial products, which needs to be effectively detected by sensitive gas sensors even at low-ppm-level concentrations. Here, NiFeO nano-octahedrons were calcinated from NiFe-bimetallic metal-organic framework (MOFs) octahedrons synthesized by a facile refluxing method. The co-existence of p-Phthalic acid (PTA) and 3,3-diaminobenzidine (DAB) promotes the formation of smooth NiFe-bimetallic MOFs octahedrons. After subsequent thermal treatment, a big weight loss (about 85%) transformed NiFeO nanoparticles (30 nm) into NiFeO porous nano-octahedrons with hollow interiors. The NiFeO nano-octahedron based sensor exhibited excellent gas sensing properties for toluene with a nice stability, fast response, and recovery time (25 s/40 s to 100 ppm toluene), and a lower detection limitation (1 ppm) at 260 °C. The excellent toluene-sensing properties can not only be derived from the hollow interiors combined with porous nano-octahedrons to favor the diffusion of gas molecules, but also from the efficient catalytic activity of NiFeO nanoparticles.
Reference Key
zhang2019mofsderivednanomaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Yanlin;Jia, Chaowei;Wang, Qiuyue;Kong, Quan;Chen, Gang;Guan, Hongtao;Dong, Chengjun;
Journal Nanomaterials
Year 2019
DOI
E1059
URL
Keywords
molecular docking amino acid sequence ace inhibitory peptides sesame protein simulated gastrointestinal digestion

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