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首页> 外文期刊>Crystal growth & design >Use of Sucrose To Tune V2O5 Films Growth Deposited through the Spray Pyrolysis Technique
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Use of Sucrose To Tune V2O5 Films Growth Deposited through the Spray Pyrolysis Technique

机译：使用蔗糖来调谐V 2 O 5 膜通过喷雾热解技术沉积的生长

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摘要

Vanadium pentoxide (V_(2)O_(5)) films can be easily obtained through the spray pyrolysis technique (SPT), although they are often accompanied by other vanadium oxide phases. The V_(2)O_(5) phase growth is only observed at low starting solution concentrations and/or at slow deposition flows with high crystalline orientation. These conditions limit the characterization of new V_(2)O_(5) properties and their industrial application. Sucrose use as reagent in the precursor solution was versatile enough to produce vanadium pentoxide under high flow rates and relatively high starting salt concentrations. In addition, it efficiently randomized the texturing of SPT-deposited samples. Nanostructured and polycrystalline vanadium pentoxides were obtained at salt concentrations ranging from 100 × 10~(–3) to 400 × 10~(–3) mol·L~(–1), at temperatures varying from 265 to 450 °C and a flow rate of 3000 mL·min~(–1). Moreover, when it comes to controlling the surface texture of deposited films, one can assume that sucrose is a chelating agent capable of keeping the octahedral coordination of the vanadium complex and favoring further vanadium pentoxide formation.
机译：通过喷雾热解技术（SPT）可以容易地获得五氧化二钒（V_（2）O_（5））薄膜，但它们通常伴随其他氧化钒相。仅在低起始溶液浓度和/或具有高结晶取向的慢沉积流动下观察到V_（2）O_（5）相生长。这些条件限制了新V_（2）O_（5）属性及其工业应用的表征。蔗糖用作前体溶液中的试剂是足够的，足以在高流量速率和相对高的起始盐浓度下产生五氧化二钒。此外，它有效地随机地随机化了SPT沉积的样品的纹理。在从100×10〜（-3）至400×10〜（-3）mol·L〜（-1）的盐浓度下获得纳米结构和多晶钒五氧化氢，温度从265到450℃和流动的温度速率为3000毫升·min〜（-1）。此外，当涉及控制沉积薄膜的表面纹理时，可以假设蔗糖是能够保持钒络合物的八面体配位和有利于进一步的钒氧化钒形成的螯合剂。

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  • 来源
    《Crystal growth & design》 |2018年第3期|共9页
  • 作者

    Maria S. A. Neves; Cristiano T. Meneses; Edvaldo A. Souza;

  • 作者单位

    Departamento de F??sica Universidade Federal de Sergipe 49100-000 S?o Cristóv?o Sergipe Brazil;

    Departamento de F??sica Universidade Federal de Sergipe 49506-036 Itabaina Sergipe Brazil;

    Departamento de F??sica Universidade Federal de Sergipe 49100-000 S?o Cristóv?o Sergipe Brazil;

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  • 正文语种 eng
  • 中图分类 晶体学;
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