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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >Intense Femtosecond Laser-Mediated Electrical Discharge Enables Preparation of Amorphous Nickel Phosphide Nanoparticles
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Intense Femtosecond Laser-Mediated Electrical Discharge Enables Preparation of Amorphous Nickel Phosphide Nanoparticles

机译：强烈的飞秒激光介导的电气放电可以制备无定形镍磷化物纳米粒子

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摘要

Reported here is a high-efficiency preparation method of amorphous nickel phosphide (Ni-P) nanoparticles by intense femtosecond laser irradiation of nickel sulfate and sodium hypophosphite aqueous solution. The underlying mechanism of the laser-assisted preparation was discussed in terms of the breaking of chemical bond in reactants via highly intense electric field discharge generated by the intense femtosecond laser. The morphology and size of the nanoparticles can be tuned by varying the reaction parameters such as ion concentration, ion molar ratio, laser power, and irradiation time. X-ray diffraction and transmission electron microscopy results demonstrated that the nanoparticles were amorphous. Finally, the thermogravimetric-differential thermal analysis experiment verified that the as-synthesized noncrystalline Ni-P nanoparticles had an excellent catalytic capability towars thermal decomposition of ammonium perchlorate. This strategy of laser-mediated electrical discharge under such an extremely intense field may create new opportunities for the decomposition of molecules or chemical bonds that could further facilitate the recombination of new atoms or chemical groups, thus bringing about new possibilities for chemical reaction initiation and nanomaterial synthesis that may not be realized under normal conditions.
机译：这里报道了通过硫酸镍和次磷酸钠水溶液的强烈飞秒激光照射，是无定形镍磷化物（Ni-P）纳米颗粒的高效制备方法。通过由强烈的飞秒激光器产生的高强度电场放电，在反应物中破裂的化学键来讨论激光辅助制剂的潜在机制。通过改变反应参数，例如离子浓度，离子摩尔比，激光功率和照射时间，可以通过改变纳米颗粒的形态和尺寸。 X射线衍射和透射电子显微镜结果表明纳米颗粒是无定形的。最后，热重分差分热分析实验证明了AS合成的非晶体Ni-P纳米颗粒具有优异的催化能力，高氯酸铵热分解。这种极其强烈场的激光介导的电气放电策略可以为分解分子或化学键的分解来创造新的机会，这些能量可以进一步促进新原子或化学基团的重组，从而引发化学反应启动和纳米材料的新可能性在正常条件下可能无法实现的合成。

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    Ma Zhuo-Chen; Chen Qi-Dai; Han Bing; Li He-Long; Wang Lei; Zhang Yong-Lai; Sun Hong-Bo;

  • 作者单位

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect 2699 Qianjin St Changchun 130012 Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;化学;
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