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Title: Controlled synthesis of concave tetrahedral palladium nanocrystals by reducing Pd(acac){sub 2} with carbon monoxide

Abstract

Graphical abstract: By using CO as a reducing agent, uniform and well-defined concave tetrahedral Pd nanocrystals were successfully synthesized. CO flow rate was the most essential for the formation of the concave tetrahedral nanostructures. The morphologies and sizes of the final products can be well controlled by adjusting the flow rate of CO. Highlights: ► By using CO as a reducing agent, concave tetrahedral Pd nanocrystals were obtained. ► CO flow rate is critical to the formation of concave tetrahedral Pd nanocrystals. ► The selective adsorption of CO on (1 1 0) facets is essential to concave Pd tetrahedra. -- Abstract: CO reducing strategy to control the morphologies of palladium nanocrystals was investigated. By using CO as a reducing agent, uniform and well-defined concave tetrahedral Pd nanocrystals with a mean size of about 55 ± 2 nm were readily synthesized with Pd(acac){sub 2} as a precursor and PVP as a stabilizer. The structures of the as-prepared Pd nanocrystals were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), ultraviolet–visible (UV–vis) absorption spectroscopy and electrochemical measurements. The results demonstrated that CO was the most essential for the formation of the concave tetrahedral Pd nanostructures. The morphologies and sizes of themore » final products can be well controlled by adjusting the flow rate of CO. The most appropriate CO flow rate, temperature and time for the formation of the ideal concave tetrahedral Pd nanocrystals was 0.033 mL s{sup −1}, 100 °C and 3 h, respectively.« less

Authors:
; ; ; ; ;  [1];  [1];  [1];  [2]
  1. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, Hubei Province, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22215604
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; ADSORPTION; CARBON MONOXIDE; CONTROL; FLOW RATE; NANOSTRUCTURES; PALLADIUM; REDUCING AGENTS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Zhu, Hai, Chi, Quan, Zhao, Yanxi, Li, Chunya, Tang, Heqing, Li, Jinlin, Huang, Tao, E-mail: huangt6628@yahoo.com.cn, Liu, Hanfan, and Institute of Chemistry, Chinese Academy of Science, Beijing 100080. Controlled synthesis of concave tetrahedral palladium nanocrystals by reducing Pd(acac){sub 2} with carbon monoxide. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.06.048.
Zhu, Hai, Chi, Quan, Zhao, Yanxi, Li, Chunya, Tang, Heqing, Li, Jinlin, Huang, Tao, E-mail: huangt6628@yahoo.com.cn, Liu, Hanfan, & Institute of Chemistry, Chinese Academy of Science, Beijing 100080. Controlled synthesis of concave tetrahedral palladium nanocrystals by reducing Pd(acac){sub 2} with carbon monoxide. United States. doi:10.1016/J.MATERRESBULL.2012.06.048.
Zhu, Hai, Chi, Quan, Zhao, Yanxi, Li, Chunya, Tang, Heqing, Li, Jinlin, Huang, Tao, E-mail: huangt6628@yahoo.com.cn, Liu, Hanfan, and Institute of Chemistry, Chinese Academy of Science, Beijing 100080. Thu . "Controlled synthesis of concave tetrahedral palladium nanocrystals by reducing Pd(acac){sub 2} with carbon monoxide". United States. doi:10.1016/J.MATERRESBULL.2012.06.048.
@article{osti_22215604,
title = {Controlled synthesis of concave tetrahedral palladium nanocrystals by reducing Pd(acac){sub 2} with carbon monoxide},
author = {Zhu, Hai and Chi, Quan and Zhao, Yanxi and Li, Chunya and Tang, Heqing and Li, Jinlin and Huang, Tao, E-mail: huangt6628@yahoo.com.cn and Liu, Hanfan and Institute of Chemistry, Chinese Academy of Science, Beijing 100080},
abstractNote = {Graphical abstract: By using CO as a reducing agent, uniform and well-defined concave tetrahedral Pd nanocrystals were successfully synthesized. CO flow rate was the most essential for the formation of the concave tetrahedral nanostructures. The morphologies and sizes of the final products can be well controlled by adjusting the flow rate of CO. Highlights: ► By using CO as a reducing agent, concave tetrahedral Pd nanocrystals were obtained. ► CO flow rate is critical to the formation of concave tetrahedral Pd nanocrystals. ► The selective adsorption of CO on (1 1 0) facets is essential to concave Pd tetrahedra. -- Abstract: CO reducing strategy to control the morphologies of palladium nanocrystals was investigated. By using CO as a reducing agent, uniform and well-defined concave tetrahedral Pd nanocrystals with a mean size of about 55 ± 2 nm were readily synthesized with Pd(acac){sub 2} as a precursor and PVP as a stabilizer. The structures of the as-prepared Pd nanocrystals were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), ultraviolet–visible (UV–vis) absorption spectroscopy and electrochemical measurements. The results demonstrated that CO was the most essential for the formation of the concave tetrahedral Pd nanostructures. The morphologies and sizes of the final products can be well controlled by adjusting the flow rate of CO. The most appropriate CO flow rate, temperature and time for the formation of the ideal concave tetrahedral Pd nanocrystals was 0.033 mL s{sup −1}, 100 °C and 3 h, respectively.},
doi = {10.1016/J.MATERRESBULL.2012.06.048},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}