Hydrothermal Synthesis of WO3·0.33H2O Nanorod Bundles as a Highly Sensitive Cyclohexene Sensor

In this paper, WO3·0.33H2O nanorods were prepared through a simple hydrothermal method using p-aminobenzoic acid (PABA) as an auxiliary reagent. X-ray diffraction (XRD) and transmission electron microscopy (TEM) images showed that the products with PABA addition were orthorhombic WO3·0.33H2O, which were mainly composed of nanorods with different crystal planes. The sensing performance of WO3·0.33H2O nanorod bundles prepared by the addition of PABA (100 ppm cyclohexene, Ra/Rg = 50.6) was found to be better than the WO3 synthesized without PABA (100 ppm cyclohexene, Ra/Rg = 1.3) for the detection of cyclohexene. The new synthesis route and sensing characteristics of as-synthesized WO3·0.33H2O nanorods revealed a promising candidate for the preparation of the cost-effective gas sensors.

[1]  Xudong Cao,et al.  Complex-directed hybridization of CuO/ZnO nanostructures and their gas sensing and photocatalytic properties , 2015 .

[2]  Vijay K. Tomer,et al.  Ordered mesoporous In-(TiO2/WO3) nanohybrid: An ultrasensitive n-butanol sensor , 2017 .

[3]  A. M. Efstathiou,et al.  Selective catalytic reduction of NOx by hydrogen (H2-SCR) on WOx-promoted CezZr1-zO2 solids , 2014 .

[4]  S. Rankin,et al.  Comparison of volatile compounds in water- and oil-soluble annatto (Bixa orellana L.) extracts. , 2002, Journal of agricultural and food chemistry.

[5]  Yuan Zhang,et al.  Brush-Like Hierarchical ZnO Nanostructures: Synthesis, Photoluminescence and Gas Sensor Properties , 2009 .

[6]  Yogendra Kumar Mishra,et al.  Cubic mesoporous Pd–WO3 loaded graphitic carbon nitride (g-CN) nanohybrids: highly sensitive and temperature dependent VOC sensors , 2018 .

[7]  Dianqing Li,et al.  Doping Metal Elements of WO3 for Enhancement of NO2-Sensing Performance at Room Temperature , 2017 .

[8]  M. Marchetti‐Deschmann,et al.  Green and highly efficient synthesis of perylene and naphthalene bisimides in nothing but water. , 2017, Chemical communications.

[9]  Michael J. Bojdys,et al.  Design Strategies in Hydrothermal Polymerization of Polyimides , 2016 .

[10]  Xiaoye Zhang,et al.  Sea salt aerosols as a reactive surface for inorganic and organic acidic gases in the Arctic troposphere , 2015 .

[11]  Jianmin Luo,et al.  PABA-assisted hydrothermal fabrication of W18O49 nanowire networks and its transition to WO3 for photocatalytic degradation of methylene blue , 2018 .

[12]  Xudong Cao,et al.  Hydrothermal synthesis of WO3 nanoplates as highly sensitive cyclohexene sensor and high-efficiency MB photocatalyst , 2013 .

[13]  M. Unterlass.  Geomimetics and Extreme Biomimetics Inspired by Hydrothermal Systems—What Can We Learn from Nature for Materials Synthesis? , 2017, Biomimetics.

[14]  Chao Yang,et al.  WO3·0.33H2O nanoplates: Hydrothermal synthesis, photocatalytic and gas-sensing properties , 2012 .

[15]  K. Shimanoe,et al.  WO₃ nanolamella gas sensor: porosity control using SnO₂ nanoparticles for enhanced NO₂ sensing. , 2014, Langmuir : the ACS journal of surfaces and colloids.

[16]  Michael J. Bojdys,et al.  Geomimetics for green polymer synthesis: highly ordered polyimides via hydrothermal techniques , 2014 .

[17]  B. Baumgartner,et al.  Towards a general understanding of hydrothermal polymerization of polyimides , 2015 .

[18]  Chao Yang,et al.  Enhanced formic acid gas-sensing property of WO3 nanorod bundles via hydrothermal method , 2016 .

[19]  Xintai Su,et al.  Synthesis of uniform WO3 square nanoplates via an organic acid-assisted hydrothermal process , 2010 .

[20]  Dong Wang,et al.  Controlled synthesis of defect-rich ultrathin two-dimensional WO3 nanosheets for NO2 gas detection , 2017 .

[21]  Vijay K. Tomer,et al.  Rapid acetone detection using indium loaded WO3/SnO2 nanohybrid sensor , 2017 .

[22]  Kewei Zhang,et al.  Synthesis mechanism and gas-sensing application of nanosheet-assembled tungsten oxide microspheres , 2014 .

[23]  Ke Wang,et al.  Comprehensive analysis of the toxic and refractory pollutants in acrylonitrile-butadiene-styrene resin manufacturing wastewater by gas chromatography spectrometry with a mass or flame ionization detector. , 2012, Journal of chromatography. A.

[24]  T. Thongtem,et al.  Photocatalysis of WO 3 nanoplates synthesized by conventional-hydrothermal and microwave-hydrothermal methods and of commercial WO 3 nanorods , 2014 .

[25]  J. Thornton,et al.  An iodide-adduct high-resolution time-of-flight chemical-ionization mass spectrometer: application to atmospheric inorganic and organic compounds. , 2014, Environmental science & technology.