Facile One-Pot Preparation of Chitosan/Calcium Pyrophosphate Hybrid Microflowers
文献类型：期刊论文
| 作者 | Wang, Xiaoli1,2,3; Shi, Jiafu1,3; Li, Zheng1,3; Zhang, Shaohua1,3; Wu, Hong1,3; Jiang, Zhongyi1,2,3; Yang, Chen1,3; Tian, Chunyong1,3 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2014-08-27 |
| 卷号 | 6期号:16页码:14522-14532 |
| 关键词 | microflowers chitosan calcium pyrophosphate mineralization dye adsorption enzyme immobilization |
| ISSN号 | 1944-8244 |
| 其他题名 | ACS Appl. Mater. Interfaces |
| 中文摘要 | Flower-like chitosan/calcium pyrophosphate hybrid microparticles (microflowers) are prepared using a facile one-pot approach by combining ionotropic gelation with biomimetic mineralization. Chitosan tripolyphosphate (CS-TPP) nanocomplexes are first synthesized through ionotropic gelation; meanwhile, excess TPP is partly hydrolyzed into pyrophosphate ions (P2O74-). Upon addition of CaCl2, CS-TPP nanocomplexes serve as a versatile template, inducing in situ mineralization of Ca2P2O7 and directing its growth and assembly into microflowers. The whole preparation process can be completed within half an hour. The as-prepared microflowers are composed of 23.0% CS-TPP nanocomplexes and 77.0% Ca2P2O7 crystals. Mesopores (3.7 and 11.2 nm) and macropores coexist in the microflowers, indicating porous and hierarchical structures. The microflowers exhibit high efficiency in dye adsorption and enzymatic catalysis. Specifically, a high adsorption capacity of 520 mg g(-1) for Congo red is achieved. And the immobilized enzyme retains about 85% catalytic activity compared with that of the free enzyme. The facile one-pot preparation process ensures the broad applications of the porous hybrid microflowers. |
| 英文摘要 | Flower-like chitosan/calcium pyrophosphate hybrid microparticles (microflowers) are prepared using a facile one-pot approach by combining ionotropic gelation with biomimetic mineralization. Chitosan tripolyphosphate (CS-TPP) nanocomplexes are first synthesized through ionotropic gelation; meanwhile, excess TPP is partly hydrolyzed into pyrophosphate ions (P2O74-). Upon addition of CaCl2, CS-TPP nanocomplexes serve as a versatile template, inducing in situ mineralization of Ca2P2O7 and directing its growth and assembly into microflowers. The whole preparation process can be completed within half an hour. The as-prepared microflowers are composed of 23.0% CS-TPP nanocomplexes and 77.0% Ca2P2O7 crystals. Mesopores (3.7 and 11.2 nm) and macropores coexist in the microflowers, indicating porous and hierarchical structures. The microflowers exhibit high efficiency in dye adsorption and enzymatic catalysis. Specifically, a high adsorption capacity of 520 mg g(-1) for Congo red is achieved. And the immobilized enzyme retains about 85% catalytic activity compared with that of the free enzyme. The facile one-pot preparation process ensures the broad applications of the porous hybrid microflowers. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | CALCIUM-PHOSPHATE ; IN-VITRO ; HIERARCHICAL STRUCTURE ; NANOPARTICLES ; HYDROXYAPATITE ; ADSORPTION ; WATER ; HYDROLYSIS ; MINERALIZATION ; DEPOSITION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000341122000146 |
| 公开日期 | 2014-09-30 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11542]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaoli,Shi, Jiafu,Li, Zheng,et al. Facile One-Pot Preparation of Chitosan/Calcium Pyrophosphate Hybrid Microflowers[J]. ACS APPLIED MATERIALS & INTERFACES,2014,6(16):14522-14532. |
| APA | Wang, Xiaoli.,Shi, Jiafu.,Li, Zheng.,Zhang, Shaohua.,Wu, Hong.,...&Tian, Chunyong.(2014).Facile One-Pot Preparation of Chitosan/Calcium Pyrophosphate Hybrid Microflowers.ACS APPLIED MATERIALS & INTERFACES,6(16),14522-14532. |
| MLA | Wang, Xiaoli,et al."Facile One-Pot Preparation of Chitosan/Calcium Pyrophosphate Hybrid Microflowers".ACS APPLIED MATERIALS & INTERFACES 6.16(2014):14522-14532. |
入库方式： OAI收割
来源：过程工程研究所
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