Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow   Structures

doi:10.1002/chem.201101314

CORC > 北京大学 > 化学与分子工程学院

	Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow Structures
	Ding, Shangjun ; Wang, Yaoming ; Hong, Zhanglian ; Lu, Xujie ; Wan, Dongyun ; Huang, Fuqiang
刊名	chemistry a european journal
	2011
关键词	amino acids isoelectric points mesoporous materials nanostructures titanium PHOTOCATALYTIC ACTIVITY SPHERES FABRICATION TEMPLATE NANOPARTICLES MICROSPHERES PERFORMANCE NANOWIRES NANOTUBES NANORODS
DOI	10.1002/chem.201101314
英文摘要	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.; Chemistry, Multidisciplinary; SCI(E); EI; 20; ARTICLE; 41; 11535-11541; 17
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/237846]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Ding, Shangjun,Wang, Yaoming,Hong, Zhanglian,et al. Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow Structures[J]. chemistry a european journal,2011.
APA	Ding, Shangjun,Wang, Yaoming,Hong, Zhanglian,Lu, Xujie,Wan, Dongyun,&Huang, Fuqiang.(2011).Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow Structures.chemistry a european journal.
MLA	Ding, Shangjun,et al."Biomolecule-Assisted Route to Prepare Titania Mesoporous Hollow Structures".chemistry a european journal (2011).