Removal of Formaldehyde by Hydroxyapatite Layer Biomimetically Deposited on Polyamide Film
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- 作者：Takahiro Kawai ; Chikara Ohtsuki ; Masanobu Kamitakahara ; Masao Tanihara ; Toshiki Miyazaki ; Yoshimitsu Sakaguchi ; and Shigeji Konagaya
- 刊名：Environmental Science & Technology
- 出版年：2006
- 出版时间：July 1, 2006
- 年：2006
- 卷：40
- 期：13
- 页码：4281 - 4285
- 全文大小：263K
- 年卷期：v.40,no.13(July 1, 2006)
- ISSN：1520-5851
文摘
Some harmful volatile organic compounds (VOCs), suchas formaldehyde, are regulated atmospheric pollutants.Therefore, development of a material to remove these VOCsis required. We focused on hydroxyapatite, which hadbeen biomimetically coated on a polyamide film, as anadsorbent and found that formaldehyde was successfullyremoved by this adsorbent. The amount of formaldehydeadsorbed increased with the area of the polyamidefilm occupied by hydroxyapatite. The amount of adsorbedformaldehyde and its rate of adsorption were larger forhydroxyapatite deposited on polyamide film than for thecommercially available calcined hydroxyapatite powder. Thishigh adsorption ability is achieved by the use of nanosizedparticles of hydroxyapatite with low crystallinity andcontaining a large number of active surface sites. Therefore,hydroxyapatite biomimetically coated on organic substratescan become a candidate material for removing harmfulVOCs such as formaldehyde.