| Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow Structures. | |
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MedLine Citation:
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PMID: 21882272 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Amino acids, as a particularly important type of biomolecules, have been used as multifunctional templates to intelligently construct mesoporous TiO(2) hollow structures through a simple solvothermal reaction. The structure-directing behaviors of various amino acids were systematically investigated, and it was found that these biomolecules possess the general capability to assist mesoporous TiO(2) hollow-sphere formation. At the same time, the nanostructures of the obtained TiO(2) are highly dependent on the isoelectric points (pI) of amino acids. Their molecular-structure variations can lead to pI differences and significantly influence the final TiO(2) morphologies. Higher-pI amino acids (e.g., L-lysine and L-arginine) have better structure-directing abilities to generate nanosheet-assembled hollow spheres and yolk/shell structures. The specific morphologies and mesopore size of these novel hollow structures can also be tuned by adjusting the titanium precursor concentration. Heat treatment in air and vacuum was further conducted to transform the as-prepared structures to porous nanoparticle-assembled hollow TiO(2) and TiO(2) /carbon nanocomposites, which may be potentially applied in the fields of photocatalysts, dye-sensitized solar cells, and Li batteries. This study provides some enlightenment on the design of novel templates by taking advantage of biomolecules. |
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Authors:
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Shangjun Ding; Yaoming Wang; Zhanglian Hong; Xujie Lü; Dongyun Wan; Fuqiang Huang |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-31 |
Journal Detail:
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Title: Chemistry (Weinheim an der Bergstrasse, Germany) Volume: - ISSN: 1521-3765 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-9-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9513783 Medline TA: Chemistry Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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State Key Laboratory of High-Performance Ceramics and Superfine Microstructures, CAS Key Laboratory of Materials for, Energy Conversion Department, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P.R. China), Fax: (+86) 21-5241-6360. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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