Simulation of SnO2/WO3 nanofilms for alcohol of gas sensor based on metal dioxides: MC and LD studies

Abstract

This article presents a method for the electrochemical preparation of a coating of nickel-silica nanocomposites on a carbon steel substrate. The incorporation of hydrophilic silica particles into the Ni composite coating during co-electrodeposition is so difficult due to the small size and the hydrophilicity of SiO 2 particle, generally less than 2 v% of silica is incorporated into the composite at different current densities, agitation speeds and silica concentrations. The effect of the presence of four surfactants, namely cocamidopropyl betaine (CAPB), decylglycoside (DG), cetyltrimethyl ammonium chloride (CTAC) and ammonium lauryl ether sulfate (ALES), on overcoming this problem was investigated in this research, and the surfactants were found to greatly influence the surface charge of silica, silica incorporation percentage and the microstructure of the composite. In fact, upon increasing the internal stresses, the products prepared in the presence of CAPB and DG were found to crack to some degree. CTAC was found to lead to entrapment mode silica co-deposition in the Ni coating. Furthermore, the addition of ALES into an electrolyte bath negatively supercharged silica surfaces and increased silica dispersion, which led to a dramatic increase in the silica incorporation percentages to around 14 v%. The results showed that Ni-SiO 2 composites prepared in the presence of ALES had better corrosion resistance, hardness and wear properties.

Two-Dimensional Borophene: Properties, Fabrication, and Promising Applications

“…DNA sequencing has been realized by different methods through the determination of base sequence, which has a great impact on the decoding of human biological code [110][111][112]. However, the application of nanomaterials in this technology will greatly accelerate the research of biology and medicine [82,[113][114][115][116][117][118].…”

A Quantum Mechanical Analysis of the Electronic Response of BN Nanocluster to Formaldehyde

“…We have previously shown [22] that B 12 N 12 is the most stable nanocluster among different X 12 Y 12 (X = Al or B and Y = N or P) cages. Nanostructured materials have been invoked more attention as chemical sensors due to high surface to volume ratio and high electronic sensitivity [23][24][25][26][27][28][29]. It has been previously demonstrated that the electronic properties of pristine BN nanotubes and graphene-like sheets are not sensitive toward presence of H 2 CO gas, and cannot be used as chemical sensors [29,30].…”

Carbon Nitride Nanotube as a Chemical Sensor for Melamine: A Theoretical Study

“…Researchers have been looking for good materials as gas sensors with high sensitivity for a long time [3][4][5][6][7][8][9][10]. Carbon nanotube (CNT) and graphene exhibit potential applications in this field because of their unique properties such as high surface to volume ratio [11][12][13][14][15][16][17][18][19].…”