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- W2266861495 abstract "In recent years, the emission of carbon dioxide and other green-house gases has started the global climate change. It is well known that this phenomenon produce unpredictable meteorological events around the world. Besides, high levels of these gases increase the respiratory diseases in the population. With the purpose of monitoring the concentration of these gases, chemical sensors have been developed from several years. On the other hand, bismuth oxychloride (BiOCl) is a well known material, used in the cosmetics industry for about five decades due to its extremely low toxicity. This material imparts pearlescence sheen to cosmetics and personal care products. Other important applications of this material can be found in pharmaceuticals, battery cathodes, photocatalysis and photoelectrochemical devices. However, few it is known about the gas sensing properties of this material. Then, the goal of this work was the synthesis of bismuth oxychloride and the evaluation of its CO2 gas sensing properties. In this work, BiOCl, which possess the tetragonal structure, was synthesized by a surfactantassisted method, using bismuth chloride and polyvinylpyrrolidone (PVP), using acetic acid as solvent. In the first step of this process, a precipitate was obtained when bismuth chloride was partially dissolved in acetic acid. Then, the PVP solution was added. The resulting mixture was stirred for 18 h at room temperature. Microwave radiation, at low power, was applied for solvent evaporation, producing a solid precursor. The thermal decomposition of the precursor at 600oC, produced single-phase BiOCl, which was characterized by X-ray powder diffraction. The cell parameters are a = 3.891A and c = 7.369A, and the space group is P4/nmm. Fig. 1 shows a typical SEM image of a BiOCl sample calcined at 600oC. This photo shows abundant formation of nanowires and nanoribbons. The length of them was in the range of 50 to ~600 μm, and the cross section size was from 50 nm to 15μm." @default.
- W2266861495 created "2016-06-24" @default.
- W2266861495 date "2010-01-01" @default.
- W2266861495 modified "2023-09-26" @default.
- W2266861495 title "Gas Sensing Properties of Bismuth Oxychloride Nanowires and Nanoribbons" @default.
- W2266861495 doi "https://doi.org/10.1149/ma2010-02/40/2291" @default.
- W2266861495 hasPublicationYear "2010" @default.
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