Purification of biosilica from living diatoms by a two-step acid cleaning and baking method
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- 作者：Wenkai Jiang (1)
Songping Luo (1) (3)
Pengwei Liu (1)
Xiangyun Deng (1) (2)
Yani Jing (1)
Chengying Bai (1)
Jianbao Li (1) (3) - 关键词：Living diatoms ; Frustules ; Biosilica ; Purification ; Baking ; Acid cleaning
- 刊名：Journal of Applied Phycology
- 出版年：2014
- 出版时间：June 2014
- 年：2014
- 卷：26
- 期：3
- 页码：1511-1518
- 全文大小：
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Songping Luo (1) (3)
Pengwei Liu (1)
Xiangyun Deng (1) (2)
Yani Jing (1)
Chengying Bai (1)
Jianbao Li (1) (3)
1. Key Laboratory of Ministry of Education for Advanced Material in Tropical Island Resources, Hainan University, Haikou, 570228, People’s Republic of China
3. State Key Laboratory of New Ceramics & Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China
2. College of Physics and Electronic Information, Tianjin Normal University, Tianjin, 300387, People’s Republic of China - ISSN：1573-5176
文摘
Due to their sustainability, intact cell walls, availability of pure cultures, and others, living diatoms show a lot of promise for the application in various fields in particular for micro/nano-devices. In order to purify the biosilica structures of diatoms called frustules, a two-step acid cleaning and baking method was employed. By this path, organic matter and inorganic impurities can be removed very effectively. In addition, the highest quality of frustules was achieved when the samples were cleaned in an excess of boiling 10~15?% HCl and subsequently heated to 600?°C at a heating rate of 3?°C?min? for 6?h. In our operation, the native frustule morphology was maintained completely, and dry frustules with more than 90?% SiO2 in weight can be obtained, and furthermore, the surface area of them reached a good value of 48.47?m2?g?.