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首页> 外文期刊>Crystal growth & design >Uncovering the Mechanism for the Formation of Copper Thioantimonate (Sb-v) Nanoparticles and Its Transition to Thioantimonide (Sb-III)
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Uncovering the Mechanism for the Formation of Copper Thioantimonate (Sb-v) Nanoparticles and Its Transition to Thioantimonide (Sb-III)

机译：揭开形成铜硫代铵（Sb-V）纳米粒子的机制及其向硫代铵（SB-III）的转变

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摘要

Ternary sulfide nanostructures are small band gap materials that combine relatively low toxicity with useful optical properties for several applications, including photovoltaics. A systematic experimental study on the synthesis and mechanism of formation of copper thioantimonates (Cu3SbS4) and thioantimonides (CuSbS2) nanoparticles is presented. Antimony oxide (Sb2O3) was formed in an initial step by hydrolysis with oleylamine. The injection of a sulfur precursor led to the conversion to Cu3SbS4 driven by an excess of sulfur in oleylamine medium and at high temperatures (200 degrees C). The sulfur excess was depleted as the reaction progressed, causing the reduction of the antimony(V) of the Cu3SbS4 back to antimony(III). Consequently, the Cu3SbS4 was converted to CuSbS2. In addition, the rate of antimony reduction increased with the reaction temperature. The formation mechanism unveiled here provides important insights toward the synthesis of analogous materials.
机译：三元硫化物纳米结构是小带隙材料，其将相对低的毒性与有用的光学性质相结合，用于多种应用，包括光伏。 介绍了铜硫代铵（Cu3SBS4）和硫代铵（CUSBS2）纳米粒子（CUSBS2）纳米颗粒的合成及机制的系统实验研究。 通过用油胺水解在初始步骤中形成氧化锑（Sb2O3）。 注射硫前体导致由Oxylamine培养基中过量的硫和高温（＆ 200℃）驱动的Cu3SBS4。 当反应进展时，硫过量耗尽，导致Cu3SBS4的锑（V）减少回锑（III）。 因此，将Cu 3SS4转化为Cusbs2。 此外，随着反应温度，锑还原率增加。 揭开的地层机制在此提供了对合成类似物质的重要见解。

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  • 来源
    《Crystal growth & design》 |2018年第11期|共7页
  • 作者

    Baum Fabio; Pretto Tatiane; Brolo Alexandre G.; Leite Santos Marcos Jose;

  • 作者单位

    Univ Fed Rio Grande do Sul Programa Posgrad Ciencias Mat Av Bento Gonsalves 9500 Bairro Agronomia BR-91501970 Porto Alegre RS Brazil;

    Univ Fed Rio Grande do Sul Inst Qulm Av Bento Gonsalves 9500 Bairro Agronomia BR-91501970 Porto Alegre RS Brazil;

    Univ Victoria Dept Chem POB 3065 Victoria BC V8W 3V6 Canada;

    Univ Fed Rio Grande do Sul Programa Posgrad Ciencias Mat Av Bento Gonsalves 9500 Bairro Agronomia BR-91501970 Porto Alegre RS Brazil;

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  • 正文语种 eng
  • 中图分类 晶体学;
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