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Facile One-Pot Preparation of Chitosan/Calcium Pyrophosphate Hybrid Microflowers
Alternative TitleACS Appl. Mater. Interfaces
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
2014-08-27
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume6Issue:16Pages:14522-14532
AbstractFlower-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.; 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.
KeywordMicroflowers Chitosan Calcium Pyrophosphate Mineralization Dye Adsorption Enzyme Immobilization
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/am503787h
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCALCIUM-PHOSPHATE ; IN-VITRO ; HIERARCHICAL STRUCTURE ; NANOPARTICLES ; HYDROXYAPATITE ; ADSORPTION ; WATER ; HYDROLYSIS ; MINERALIZATION ; DEPOSITION
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000341122000146
Citation statistics
Cited Times:73[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11542
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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