Lotus pollen derived 3-dimensional hierarchically porous NiO microspheres for NO2 gas sensing

The Morphologies of the Semiconductor Oxides and Their Gas-Sensing Properties

“…Many semiconductor oxides have been widely used in gas sensors, such as SnO 2 [ 36 ], ZnO [ 37 ], WO 3 [ 38 ], In 2 O 3 [ 39 ], NiO [ 40 ], TiO 2 [ 41 ], etc. In recent years, enormous efforts have been made to fabricate various semiconductor oxide morphologies to improve the gas-sensing performances.…”

Assembly of 3D flower-like NiO hierarchical architectures by 2D nanosheets: synthesis and their sensing properties to formaldehyde

“…The above observation demonstrates that the product is close to the chemical stoichiometry of NiO. 32,33 The nitrogen adsorption-desorption measurement isotherm and pore size distribution as the inset of the annealed product synthesized at ethanol/water volume ratio of 30/10 are shown in Fig. S2.…”

Mini Review: Recent Green Advances on the Preparation of V2O5, ZnO, and NiO Nanosheets

“…Nickel (II) oxide (NiO) and nickel (II) composites in meticulously have attracted substantial interest because of a broad range of applications, namely magnetic materials [17], photovoltaic [18] Li ion batteries [19], catalysis [20], gas sensors [21], p-type transparent conducting films, infrared detectors, storage oxygen materials, fuels cells, supercapacitors, ferromagnetic oxides, gas sensors and luminescence materials, photochromic materials, [22], electrochromic windows [23], biomedicine, desalination, waste water treatment, energy related fields, catalytic reduction, adsorption, photocatalytic reduction, degradation, magnetic material, reinforcing agents in composites [24,25]. Different methods have been reported for the synthesis of NiO, such as sol-gel [26], microemulsion [27], hydrothermal [28], co-precipitation, precipitation [29], sonochemical [15], microwave [30], metal-organic chemical vapor deposition (MOCVD), sputtering method [30], pulsed laser deposition (PLD), infrared irradiation, thermal decomposition, thermal evaporation and condensation [29,30].…”