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Article

PVA-Assisted Hydrothermal Synthesis of Copper@Carbonaceous Submicrocables: Thermal Stability, and Their Conversion into Amorphous Carbonaceous Submicrotubes

Supporting Info

Jun-Yan Gong, Shu-Hong Yu,* Hai-Sheng Qian, Lin-Bao Luo, and Tan-Wei Li

Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry & Materials, Department of Chemistry, University of Science and Technology of China, Heifei 230026, China

J. Phys. Chem. C, 2007, 111 (6), pp 2490–2496

DOI: 10.1021/jp067284f

Publication Date (Web): January 25, 2007

Corresponding author. E-mail: shyu@ustc.edu.cn. Fax: + 86 551 3603040.

Abstract

Ultralong Cu@carbonaceous submicrocables with diameters of 0.4−0.6 μm and lengths up to and exceeding 100 μm have been fabricated successfully by a poly(vinyl alcohol)- (PVA-) assisted hydrothermal carbonization process using copper chloride and maltose as materials. In this one-pot synthesis, poly(vinyl alcohol) (PVA) played an important role in the formation of these submicrocables as a structure-directing agent to effectively restrain the formation of carbonaceous spheres that are normally nucleated from bulk solutions. In addition, the combined synergistic effects of both the carbohydrates and the PVA enable the formation of elegant Cu@carbonaceous submicrocables. Furthermore, control of the initial pH value (7−8) and reaction temperature (180 °C) is also essential for the formation of cablelike structures. The effects of other saccharides such as glucose, β-cyclodextrin, and starch on the formation of Cu@carbonaceous submicrocables were also examined under similar conditions. The thermal stability of as-prepared Cu@carbonaceous submicrocables was studied. In addition, removal of the copper cores of Cu@carbonaceous submicrocables at ambient temperature in a mixed solution of hydrochloric acid and H₂O₂ can form well-defined amorphous carbonaceous submicrotubes.

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Published In Issue February 15, 2007
Received November 5, 2006
Revised December 17, 2006

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Article

PVA-Assisted Hydrothermal Synthesis of Copper@Carbonaceous Submicrocables: Thermal Stability, and Their Conversion into Amorphous Carbonaceous Submicrotubes

Abstract

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Recommend & Share

Related Content

Synthesis of Uniform Te@Carbon-Rich Composite Nanocables with Photoluminescence Properties and Carbonaceous Nanofibers by the Hydrothermal Carbonization of Glucose

Large-Scale Fabrication of Flexible Silver/Cross-Linked Poly(vinyl alcohol) Coaxial Nanocables by a Facile Solution Approach

Te@Cross-Linked PVA Core−Shell Structures Synthesized by a One-Step Synergistic Soft−Hard Template Process

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