Local structure of Se nanotube investigated by X-ray absorption fine structure spectroscopy

Yajuan Feng; Zhi Xie; Zhihu Sun; Jing Zhang; Tao Yao; Yuanyuan Li; Ziyu Wu; Lirong Zheng; Zhiyun Pan; Shiqiang Wei

doi:10.1007/s12210-011-0150-4

Local structure of Se nanotube investigated by X-ray absorption fine structure spectroscopy

Yajuan Feng
, Zhi Xie
, Zhihu Sun
, Jing Zhang
, Tao Yao
, Yuanyuan Li
, Ziyu Wu
, Lirong Zheng
, Zhiyun Pan
, Shiqiang Wei

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The structures of selenium nanoparticles and nanotubes synthesized by the dismutation of precursor Na₂SeSO₃ under acidic condition in micellar solution are studied by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray absorption fine structure spectroscopy (XAFS). Spherical-like nanoparticles contain both amorphous and crystalline parts while, as shown by XRD patterns, nanotubes have the crystal structure of trigonal selenium (t-Se). They display quite different XANES spectral features indicating different local atomic arrangements. Theoretical XANES calculations show that the local structure around Se atom in the nanotubes is similar to a hexangular cylinder. Quantitative extended XAFS (EXAFS) analysis further shows that the average Se-Se bond length for both nanotubes and nanoparticles is 2.35 Å.

Original language	English
Pages (from-to)	S17-S24
Journal	Rendiconti Lincei
Volume	22
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1007/s12210-011-0150-4
State	Published - Dec 2011
Externally published	Yes

Funding

Acknowledgments This work was supported by the National Natural Science Foundation of China (No. 10905058, 10635060, 20701036).The authors would like to thank the BSRF and NSRL facilities that provided the beam time. A special acknowledgement is due to Prof. A. Marcelli, Dr. Zhenyu Yao, Mr. Pengfei An, and Mr. Nan Qiu for their invaluable support.

Keywords

Local structure
Se nanotube
X-ray absorption fine structure spectroscopy (XAFS)
X-ray diffraction (XRD)

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10.1007/s12210-011-0150-4

Cite this

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title = "Local structure of Se nanotube investigated by X-ray absorption fine structure spectroscopy",

abstract = "The structures of selenium nanoparticles and nanotubes synthesized by the dismutation of precursor Na2SeSO3 under acidic condition in micellar solution are studied by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray absorption fine structure spectroscopy (XAFS). Spherical-like nanoparticles contain both amorphous and crystalline parts while, as shown by XRD patterns, nanotubes have the crystal structure of trigonal selenium (t-Se). They display quite different XANES spectral features indicating different local atomic arrangements. Theoretical XANES calculations show that the local structure around Se atom in the nanotubes is similar to a hexangular cylinder. Quantitative extended XAFS (EXAFS) analysis further shows that the average Se-Se bond length for both nanotubes and nanoparticles is 2.35 {\AA}.",

keywords = "Local structure, Se nanotube, X-ray absorption fine structure spectroscopy (XAFS), X-ray diffraction (XRD)",

author = "Yajuan Feng and Zhi Xie and Zhihu Sun and Jing Zhang and Tao Yao and Yuanyuan Li and Ziyu Wu and Lirong Zheng and Zhiyun Pan and Shiqiang Wei",

year = "2011",

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doi = "10.1007/s12210-011-0150-4",

language = "English",

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T1 - Local structure of Se nanotube investigated by X-ray absorption fine structure spectroscopy

AU - Feng, Yajuan

AU - Xie, Zhi

AU - Sun, Zhihu

AU - Zhang, Jing

AU - Yao, Tao

AU - Li, Yuanyuan

AU - Wu, Ziyu

AU - Zheng, Lirong

AU - Pan, Zhiyun

AU - Wei, Shiqiang

PY - 2011/12

Y1 - 2011/12

N2 - The structures of selenium nanoparticles and nanotubes synthesized by the dismutation of precursor Na2SeSO3 under acidic condition in micellar solution are studied by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray absorption fine structure spectroscopy (XAFS). Spherical-like nanoparticles contain both amorphous and crystalline parts while, as shown by XRD patterns, nanotubes have the crystal structure of trigonal selenium (t-Se). They display quite different XANES spectral features indicating different local atomic arrangements. Theoretical XANES calculations show that the local structure around Se atom in the nanotubes is similar to a hexangular cylinder. Quantitative extended XAFS (EXAFS) analysis further shows that the average Se-Se bond length for both nanotubes and nanoparticles is 2.35 Å.

AB - The structures of selenium nanoparticles and nanotubes synthesized by the dismutation of precursor Na2SeSO3 under acidic condition in micellar solution are studied by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray absorption fine structure spectroscopy (XAFS). Spherical-like nanoparticles contain both amorphous and crystalline parts while, as shown by XRD patterns, nanotubes have the crystal structure of trigonal selenium (t-Se). They display quite different XANES spectral features indicating different local atomic arrangements. Theoretical XANES calculations show that the local structure around Se atom in the nanotubes is similar to a hexangular cylinder. Quantitative extended XAFS (EXAFS) analysis further shows that the average Se-Se bond length for both nanotubes and nanoparticles is 2.35 Å.

KW - Local structure

KW - Se nanotube

KW - X-ray absorption fine structure spectroscopy (XAFS)

KW - X-ray diffraction (XRD)

UR - https://www.scopus.com/pages/publications/81855182121

U2 - 10.1007/s12210-011-0150-4

DO - 10.1007/s12210-011-0150-4

M3 - Article

AN - SCOPUS:81855182121

SN - 2037-4631

VL - 22

SP - S17-S24

JO - Rendiconti Lincei

JF - Rendiconti Lincei

IS - SUPPL. 1

ER -

Local structure of Se nanotube investigated by X-ray absorption fine structure spectroscopy

Abstract

Funding

Keywords

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