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首页> 外文期刊>Environmental Science & Technology >Removal of formaldehyde by hydroxyapatite layer biomimetically deposited on polyamide film
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Removal of formaldehyde by hydroxyapatite layer biomimetically deposited on polyamide film

机译：通过仿生沉积在聚酰胺薄膜上的羟基磷灰石层去除甲醛

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摘要

Some harmful volatile organic compounds (VOCs), such as formaldehyde, are regulated atmospheric pollutants. Therefore, development of a material to remove these VOCs is required. We focused on hydroxyapatite, which had been biomimetically coated on a polyamide film, as an adsorbent and found that formaldehyde was successfully removed by this adsorbent. The amount of formaldehyde adsorbed increased with the area of the polyamide film occupied by hydroxyapatite. The amount of adsorbed formaldehyde and its rate of adsorption were larger for hydroxyapatite deposited on polyamide film than for the commercially available calcined hydroxyapatite powder. This high adsorption ability is achieved by the use of nanosized particles of hydroxyapatite with low crystallinity and containing a large number of active surface sites. Therefore, hydroxyapatite biomimetically coated on organic substrates can become a candidate material for removing harmful VOCs such as formaldehyde.
机译：一些有害的挥发性有机化合物（VOC），例如甲醛，是受管制的大气污染物。因此，需要开发去除这些VOC的材料。我们着眼于羟基磷灰石，它已被仿生地涂覆在聚酰胺薄膜上，作为一种吸附剂，发现该吸附剂已成功去除了甲醛。甲醛吸附量随羟磷灰石所占聚酰胺膜面积的增加而增加。沉积在聚酰胺薄膜上的羟基磷灰石的甲醛吸附量及其吸附速率要比市售煅烧的羟基磷灰石粉末大。通过使用具有低结晶度并包含大量活性表面位点的羟基磷灰石纳米颗粒来实现这种高吸附能力。因此，仿生地涂覆在有机基材上的羟基磷灰石可以成为去除有害VOC（例如甲醛）的候选材料。

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