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Precursor-Directed Nucleation and Self-Assembly Growth: From Hollow Microprisms to Nanoplatelets
Li, Zhaojin; Hu, Tao; Peng, Zhenzhen; Hu, Minmin; Zhu, Kongjun; Wang, Xiaohui; Wang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2017-05-01
发表期刊CHEMNANOMAT
ISSN2199-692X
卷号3期号:5页码:292-297
摘要Directly controlling the morphology and orientation of nanocrystals is a key step for their tailored applications. Achieving such controlled synthesis requires insight into the formation mechanism. Using Li3PO4 microprisms as a solid precursor sealed in capillary tube, we unravel the structural and morphological evolution from the precursor to the resultant LiFePO4 nanoplatelets by means of in situ temperature monitoring, ex situ Raman spectroscopy and TEM/STEM. Under water-deficient conditions, the precursor dissolves in a sluggish manner, facilitating simultaneous heterogeneous nucleation of LiFePO4 on undissolved Li3PO4 and homogeneous nucleation in solution. Vertically aligned nanoribbons consisting of primary LiFePO4 particles on the Li3PO4 surface undergo self-assembly growth though oriented attachment. The [100]-orientation is explained by the fact that H3O+ preferably adsorbed on the LiFePO4 (100) facet and suppressed the crystal growth more along the [100] direction than the others.; Directly controlling the morphology and orientation of nanocrystals is a key step for their tailored applications. Achieving such controlled synthesis requires insight into the formation mechanism. Using Li3PO4 microprisms as a solid precursor sealed in capillary tube, we unravel the structural and morphological evolution from the precursor to the resultant LiFePO4 nanoplatelets by means of in situ temperature monitoring, ex situ Raman spectroscopy and TEM/STEM. Under water-deficient conditions, the precursor dissolves in a sluggish manner, facilitating simultaneous heterogeneous nucleation of LiFePO4 on undissolved Li3PO4 and homogeneous nucleation in solution. Vertically aligned nanoribbons consisting of primary LiFePO4 particles on the Li3PO4 surface undergo self-assembly growth though oriented attachment. The [100]-orientation is explained by the fact that H3O+ preferably adsorbed on the LiFePO4 (100) facet and suppressed the crystal growth more along the [100] direction than the others.
部门归属[li, zhaojin ; hu, tao ; peng, zhenzhen ; hu, minmin ; zhu, kongjun ; wang, xiaohui] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [li, zhaojin ; hu, tao ; peng, zhenzhen] univ chinese acad sci, beijing 100039, peoples r china ; [hu, minmin] univ sci & technol china, sch mat sci & engn, hefei 230026, peoples r china ; [zhu, kongjun] nanjing univ aeronaut & astronaut, state key lab mech & control mech struct, nanjing 210016, jiangsu, peoples r china
关键词Crystal Growth Hollow Prisms Lifepo4 Oriented Attachment Surface Chemistry
学科领域Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
资助者Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS) [2011152]; Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase)
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78150
专题中国科学院金属研究所
通讯作者Wang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Li, Zhaojin,Hu, Tao,Peng, Zhenzhen,et al. Precursor-Directed Nucleation and Self-Assembly Growth: From Hollow Microprisms to Nanoplatelets[J]. CHEMNANOMAT,2017,3(5):292-297.
APA Li, Zhaojin.,Hu, Tao.,Peng, Zhenzhen.,Hu, Minmin.,Zhu, Kongjun.,...&Wang, XH .(2017).Precursor-Directed Nucleation and Self-Assembly Growth: From Hollow Microprisms to Nanoplatelets.CHEMNANOMAT,3(5),292-297.
MLA Li, Zhaojin,et al."Precursor-Directed Nucleation and Self-Assembly Growth: From Hollow Microprisms to Nanoplatelets".CHEMNANOMAT 3.5(2017):292-297.
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