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Title: Electrically driven cation exchange for in situ fabrication of individual nanostructures

Abstract

Cation exchange (CE) has been recognized as a particularly powerful tool for the synthesis of heterogeneous nanocrystals. Presently, CE can be divided into two categories, namely ion solvation-driven CE reaction and thermally activated CE reaction. Here we report an electrically driven CE reaction to prepare individual nanostructures inside a transmission electron microscope. During the process, Cd is eliminated due to Ohmic heating, whereas Cu + migrates into the crystal driven by the electrical field force. Contrast experiments reveal that the feasibility of electrically driven CE is determined by the structural similarity of the sulfur sublattices between the initial and final phases, and the standard electrode potentials of the active electrodes. These experimental results demonstrate a strategy for the selective growth of individual nanocrystals and provide crucial insights into understanding of the microscopic pathways leading to the formation of heterogeneous structures.

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3]; ORCiD logo [4]
  1. Southeast Univ., Nanjing (China). School of Science and Engineering, Key Lab. of MEMS of Ministry of Education, SEU-FEI Nano-Pico Center
  2. Southeast Univ., Nanjing (China). School of Science and Engineering, Key Lab. of MEMS of Ministry of Education, SEU-FEI Nano-Pico Center; Nanjing Tech Univ. (China). College of Materials Science and Engineering
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  4. Southeast Univ., Nanjing (China). School of Science and Engineering, Key Lab. of MEMS of Ministry of Education, SEU-FEI Nano-Pico Center; Southeast Univ. and Monash Univ., Suzhou (China). Center for Advanced Materials and Manufacture, Joint Research Inst.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1413725
Grant/Contract Number:
AC02-05CH11231; KC22ZH
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; design; synthesis and processing; nanowires

Citation Formats

Zhang, Qiubo, Yin, Kuibo, Dong, Hui, Zhou, Yilong, Tan, Xiaodong, Yu, Kaihao, Hu, Xiaohui, Xu, Tao, Zhu, Chao, Xia, Weiwei, Xu, Feng, Zheng, Haimei, and Sun, Litao. Electrically driven cation exchange for in situ fabrication of individual nanostructures. United States: N. p., 2017. Web. doi:10.1038/ncomms14889.
Zhang, Qiubo, Yin, Kuibo, Dong, Hui, Zhou, Yilong, Tan, Xiaodong, Yu, Kaihao, Hu, Xiaohui, Xu, Tao, Zhu, Chao, Xia, Weiwei, Xu, Feng, Zheng, Haimei, & Sun, Litao. Electrically driven cation exchange for in situ fabrication of individual nanostructures. United States. doi:10.1038/ncomms14889.
Zhang, Qiubo, Yin, Kuibo, Dong, Hui, Zhou, Yilong, Tan, Xiaodong, Yu, Kaihao, Hu, Xiaohui, Xu, Tao, Zhu, Chao, Xia, Weiwei, Xu, Feng, Zheng, Haimei, and Sun, Litao. Wed . "Electrically driven cation exchange for in situ fabrication of individual nanostructures". United States. doi:10.1038/ncomms14889. https://www.osti.gov/servlets/purl/1413725.
@article{osti_1413725,
title = {Electrically driven cation exchange for in situ fabrication of individual nanostructures},
author = {Zhang, Qiubo and Yin, Kuibo and Dong, Hui and Zhou, Yilong and Tan, Xiaodong and Yu, Kaihao and Hu, Xiaohui and Xu, Tao and Zhu, Chao and Xia, Weiwei and Xu, Feng and Zheng, Haimei and Sun, Litao},
abstractNote = {Cation exchange (CE) has been recognized as a particularly powerful tool for the synthesis of heterogeneous nanocrystals. Presently, CE can be divided into two categories, namely ion solvation-driven CE reaction and thermally activated CE reaction. Here we report an electrically driven CE reaction to prepare individual nanostructures inside a transmission electron microscope. During the process, Cd is eliminated due to Ohmic heating, whereas Cu + migrates into the crystal driven by the electrical field force. Contrast experiments reveal that the feasibility of electrically driven CE is determined by the structural similarity of the sulfur sublattices between the initial and final phases, and the standard electrode potentials of the active electrodes. These experimental results demonstrate a strategy for the selective growth of individual nanocrystals and provide crucial insights into understanding of the microscopic pathways leading to the formation of heterogeneous structures.},
doi = {10.1038/ncomms14889},
journal = {Nature Communications},
number = ,
volume = 8,
place = {United States},
year = {Wed Apr 12 00:00:00 EDT 2017},
month = {Wed Apr 12 00:00:00 EDT 2017}
}

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