High selectivity Fe3O4 nanoparticle to volatile organic compound (VOC) for MEMS gas sensors

In the current study, XRD analysis shows the polycrystalline form an inverse spinel Fe3O4 structure. Fe3O4 film is prepared by dip coating method on MEMS gas sensors to test the sensitivity on volatile organic compound (VOC) gas. VOC is being tested at 92 mW (∼300 °C) power consumption with different VOC gas concentrations and also tested with different gases like NO2, SO2, NH3 and CO gas. The results showed that the Fe3O4 gas sensor has better selectivity and high response with VOC 1.2 ppm concentration. Structural morphology is seen and reaction mechanism when VOC gas reacts with Fe3O4 material is also being discussed.

[1]  K. Pugazhendhi,et al.  Hybrid TiO2/ZnO and TiO2/Al plasmon impregnated ZnO nanocomposite photoanodes for DSSCs: synthesis and characterisation , 2018 .

[2]  C. Di Natale,et al.  Peptide Modified ZnO Nanoparticles as Gas Sensors Array for Volatile Organic Compounds (VOCs) , 2018, Front. Chem..

[3]  G. Wang,et al.  Facile synthesis of hollow MnFe 2 O 4 nanoboxes based on galvanic replacement reaction for fast and sensitive VOCs sensor , 2018 .

[4]  Hongwei Song,et al.  Three-dimensional ordered ZnO–Fe3O4 inverse opal gas sensor toward trace concentration acetone detection , 2017 .

[5]  Dong-Joo Kim,et al.  SnO2/Graphene Oxide Composites on VOC Gas Sensing Properties , 2017 .

[6]  W. Bunjongpru,et al.  Graphene and poly(methyl methacrylate) composite laminates on flexible substrates for volatile organic compound detection , 2017 .

[7]  Seok-Hee Lee,et al.  VOC Gas Sensors Fabricated with Graphene Oxide Composites for Food Safety and Quality , 2015 .

[8]  Bin Du,et al.  A highly sensitive gas sensor based on Pd-doped Fe3O4 nanoparticles for volatile organic compounds detection , 2014 .

[9]  Zhuge Xi,et al.  Intraperitoneal injection of magnetic Fe3O4-nanoparticle induces hepatic and renal tissue injury via oxidative stress in mice , 2012, International journal of nanomedicine.

[10]  S. El‐Safty,et al.  Meso- and Macroporous Co3O4 Nanorods for Effective VOC Gas Sensors , 2011 .

[11]  H. Ahmad,et al.  ZnO thin films for VOC sensing applications , 2010 .

[12]  Qing Wang,et al.  Gas Sensors Based on Semiconducting Metal Oxide One-Dimensional Nanostructures , 2009, Sensors.

[13]  M. Bayhan,et al.  Preparation and VOC gas sensing properties of Sr(II)-added copper aluminate spinel composites , 2008 .

[14]  Bo Li,et al.  Volatile organic compound detection using nanostructured copolymers. , 2006, Nano letters.

[15]  W. Y. Wang,et al.  Improvement in gas sensitivity of ZnO thick film to volatile organic compounds (VOCs) by adding TiO2 , 2004 .

[16]  A. K. Srivastava,et al.  Detection of volatile organic compounds (VOCs) using SnO2 gas-sensor array and artificial neural network , 2003 .