Hierarchical, ultrathin single-crystal nanowires of CdS conveniently produced in laser-induced thermal field
Abstract
Hierarchical nanowires (HNWs) exhibit unique properties and have wide applications, while often suffering from imperfect structure. We report a facile strategy toward ultrathin CdS HNWs with monocrystal structure, where a continuous-wave (CW) Nd:YAG laser is employed to irradiate an oleic acid (OA) solution containing precursors and a light absorber. The high heating rate and large temperature gradient generated by the CW laser lead to the rapid formation of tiny zinc-blende CdS nanocrystals which then line up into nanowires with the help of OA molecules. Next, the nanowires experience a phase transformation from zinc-blende to wurtzite structure, and the transformation-induced stress creates terraces on their surface, which promotes the growth of side branches and eventually results in monocrystal HNWs with an ultrathin diameter of 24 nm. The one-step synthesis of HNWs is conducted in air and completes in just 40 seconds, thus being very simple and rapid. The prepared CdS HNWs display photocatalytic performance superior to their nanoparticle counterparts, thus showing promise for catalytic applications in the future.
- Authors:
-
- Tianjin Univ., Tianjin (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Tokai Univ., Kanagawa (Japan); Aston Univ., Birmingham (United Kingdom)
- Tianjin Univ., Tianjin (China)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1222623
- Report Number(s):
- BNL-107664-2015-JA
Journal ID: ISSN 0743-7463; R&D Project: 16060; KC0403020
- Grant/Contract Number:
- 51102176; 51171127; 51271129; 2014CB931703; SC0012704
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Langmuir
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 29; Journal ID: ISSN 0743-7463
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; laser synthesis; Center for Functional Nanomaterials
Citation Formats
Han, Li -Li, Xin, Huolin L., Kulinich, Sergei A., Yang, Li -Jun, and Du, Xi -Wen. Hierarchical, ultrathin single-crystal nanowires of CdS conveniently produced in laser-induced thermal field. United States: N. p., 2015.
Web. doi:10.1021/acs.langmuir.5b01923.
Han, Li -Li, Xin, Huolin L., Kulinich, Sergei A., Yang, Li -Jun, & Du, Xi -Wen. Hierarchical, ultrathin single-crystal nanowires of CdS conveniently produced in laser-induced thermal field. United States. https://doi.org/10.1021/acs.langmuir.5b01923
Han, Li -Li, Xin, Huolin L., Kulinich, Sergei A., Yang, Li -Jun, and Du, Xi -Wen. 2015.
"Hierarchical, ultrathin single-crystal nanowires of CdS conveniently produced in laser-induced thermal field". United States. https://doi.org/10.1021/acs.langmuir.5b01923. https://www.osti.gov/servlets/purl/1222623.
@article{osti_1222623,
title = {Hierarchical, ultrathin single-crystal nanowires of CdS conveniently produced in laser-induced thermal field},
author = {Han, Li -Li and Xin, Huolin L. and Kulinich, Sergei A. and Yang, Li -Jun and Du, Xi -Wen},
abstractNote = {Hierarchical nanowires (HNWs) exhibit unique properties and have wide applications, while often suffering from imperfect structure. We report a facile strategy toward ultrathin CdS HNWs with monocrystal structure, where a continuous-wave (CW) Nd:YAG laser is employed to irradiate an oleic acid (OA) solution containing precursors and a light absorber. The high heating rate and large temperature gradient generated by the CW laser lead to the rapid formation of tiny zinc-blende CdS nanocrystals which then line up into nanowires with the help of OA molecules. Next, the nanowires experience a phase transformation from zinc-blende to wurtzite structure, and the transformation-induced stress creates terraces on their surface, which promotes the growth of side branches and eventually results in monocrystal HNWs with an ultrathin diameter of 24 nm. The one-step synthesis of HNWs is conducted in air and completes in just 40 seconds, thus being very simple and rapid. The prepared CdS HNWs display photocatalytic performance superior to their nanoparticle counterparts, thus showing promise for catalytic applications in the future.},
doi = {10.1021/acs.langmuir.5b01923},
url = {https://www.osti.gov/biblio/1222623},
journal = {Langmuir},
issn = {0743-7463},
number = 29,
volume = 31,
place = {United States},
year = {Thu Jul 16 00:00:00 EDT 2015},
month = {Thu Jul 16 00:00:00 EDT 2015}
}
Web of Science
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