Ge Nanocages and Nanoparticles via Microwave-Assisted Galvanic Replacement for Energy Storage Applications
Ge Nanocages and Nanoparticles via Microwave-Assisted Galvanic Replacement for Energy Storage Applications
复制标题
通过微波辅助电镀替代的 Ge 纳米笼和纳米颗粒用于储能应用
DOI:
10.1021/acsanm.0c00803
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发表时间:
2020
影响因子:
5.9
通讯作者:
Kauzlarich, Susan M.
中科院分区:
文献类型:
--
作者:
Qi, Xiao;Kauzlarich, Susan M.
We report a systematic study on the synthesis of highly monodisperse hollow germanium (Ge) nanoparticles (NPs) via galvanic replacement reactions between GeI2and Ag NPs. By fine-tuning the synthetic parameters such as temperature, precursor molar ratio, ligand concentration, and so forth, the morphology and surface structure of the Ge NPs can be precisely controlled. We also report a method to synthesize solid Ge NPs and Ag@Ge core–shell metal–semiconductor NPs with a controllable uniform shell thickness. An inward diffusion mechanism for galvanic replacement is proposed and supported by imaging the different stages of the reaction and analysis of the products. This mechanism allows the reaction to be self-terminated and achieves nanometer-sized accuracy. The galvanic reaction may be applied to other semiconductors and could serve as a powerful alternative to the classical nucleation-growth mechanism and subsequently advance the scale-up and further energy storage applications.
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
K. Gärtner;J. Johrens;T. Steinbach;C. Schnohr;M. Ridgway;W. Wesch
通讯作者:
W. Wesch
影响因子:
10.8
作者:
Lu, Xianmao;Au, Leslie;Xia, Younan
通讯作者:
Xia, Younan
影响因子:
35
作者:
He, Rongrui;Sazio, Pier J. A.;Badding, John V.
通讯作者:
Badding, John V.