SYNTHESIS OF NOVEL HIGHLY POROUS CuS GOLF BALLS BY HYDROTHERMAL METHOD AND THEIR APPLICATION IN AMMONIA GAS SENSING
A novel kind of porous CuS golf balls with an average diameter of 2 µm have been successfully synthesized by using CuCl powders as source PVP as soft template based on a template-directed approach. This process involves the conversion of CuCl to CuS via reaction with H2S, which is produced by hydrol...
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| Autores principales: | , , , |
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2013
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200017 |
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| Sumario: | A novel kind of porous CuS golf balls with an average diameter of 2 µm have been successfully synthesized by using CuCl powders as source PVP as soft template based on a template-directed approach. This process involves the conversion of CuCl to CuS via reaction with H2S, which is produced by hydrolyzing thiourea. The transformation of oxidation state of Cu+ to Cu2+ can proceed smoothly due to the larger lattice energy of CuS in comparison with that of CuCl. The as-prepared samples have been characterized by X-ray diffraction, scanning electron microscopy and photoluminescence analysis. NH3 sensing properties of CuS golf balls with arrays of dimples and indentations have been investigated at room temperature with a simply adapted photoluminescence-type gas sensor. The results reveal that the porous CuS golf balls sensor exhibited excellent performances with a short respond time about 33 s and a short recovery time 44 s respectively. |
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