Supercritical Hydrothermal Synthesis of Ultra-Fine Copper Particles Using Different Precursors

Pan Pan Sun; Shu Zhong Wang; Yan Hui Li; Tuo Zhang

doi:10.4028/www.scientific.net/KEM.744.493

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 744Supercritical Hydrothermal Synthesis of Ultra-Fine...

Supercritical Hydrothermal Synthesis of Ultra-Fine Copper Particles Using Different Precursors

Abstract:

Supercritical hydrothermal synthesis is a green synthesis method for metal and metal oxide ultra-fine particles. Ultra-fine copper particles are of great interests for the researchers because of the excellent performance in recent years. In this paper, supercritical hydrothermal synthesis of copper ultra-fine particles with three different precursors (CuSO₄, Cu(NO₃)₂, Cu(HCOO)₂) are reported. This thesis reports that different products are produced with different precursors. Also, three kinds of reaction mechanisms with different precursors in supercritical water were explained. The conversion of copper ions in the reaction of Cu(HCOO)₂ in supercritical water is the highest, the value reaches 100.0%. In the process of synthesizing ultra-fine copper particles, different additional HCOOH concentrations (0, 0.1 mol/L, 0.2 mol/L) and different reaction times (5 mins, 10 mins) were applied. Zero-valent ultra-fine copper particles without impurity were synthesized. The synthesized copper ultra-fine particles were cubic aggregations with micro-meter size

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Key Engineering Materials (Volume 744)

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493-497

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https://doi.org/10.4028/www.scientific.net/KEM.744.493

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Online since:

July 2017

Authors:

Pan Pan Sun, Shu Zhong Wang*, Yan Hui Li, Tuo Zhang

Keywords:

Different Precursors, Hydrothermal Synthesis, Supercritical Water, Ultra-Fine Copper Particles

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