3 years ago

Hydrogen Sensing Properties of Nanocomposite Graphene Oxide/ Co-Based Metal Organic Frameworks (Co-MOFs@GO).

Fatemeh Razi Astaraei, Somayeh Fardindoost, Azam Iraji Zad, Shadie Hatamie
This paper reports hydrogen sensing based graphene oxide hybrid with Co-based metal organic frameworks (Co-MOFs@GO) prepared by hydrothermal process. The texture and morphology of the hybrid were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller analysis (BET). Porous flower like structures assembled from Co-MOFs and GO flakes with sufficient specific surface area are obtained which are ideal for gas molecules diffusion and interactions. Sensing performance of Co-MOFs@GO tested and also improved by sputtering platinum (Pt) as a catalyst. The Pt-sputtered Co-MOFs@GO show outstanding hydrogen resistive-sensing with response and recovery times below 12 seconds at 15 °C. Also, they show stable, repeatable and selective responses to the target gas which make it suitable for development of high performance hydrogen sensor.

Publisher URL: http://doi.org/10.1088/1361-6528/aa9829

DOI: 10.1088/1361-6528/aa9829

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