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Parameter control and property analysis in the preparation of platinum iodide nanocolloids through the electrical spark discharge method

机译：通过电火花排放法制备铂碘化铂纳米胶质的参数控制与性能分析

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This study employed the electrical spark discharge method to prepare platinum iodide nanocolloids at normal temperature and pressure. Wires composed of 99.5% platinum were applied as the electrodes, and 250 ppm liquid iodine was employed as the dielectric fluid. An electric discharge machine was applied to generate cyclic direct current pulse power between the electrodes. Five sets of turn-on and turn-off time ( T _(on) – T _(off) ) parameters, namely 10–10, 30–30, 50–50, 70–70, and 90–90 μs, were implemented to identify the optimal nanocolloid preparation conditions. An ultraviolet-visible spectroscope, a Zetasizer, and a transmission electron microscope were used to examine the nanocolloids' properties. The results revealed that the T _(on) – T _(off) parameter set of 10–10 μs was the most ideal setting for platinum iodide nanocolloid preparation. With this parameter set, the characteristic wavelengths of the nanocolloid were 285 and 350 nm, respectively; its absorbance values were 0.481 and 0.425, respectively; and its zeta potential and particle size were ?30.3 mV and 61.88 nm, respectively. This parameter set yielded maximized absorbance, satisfactory suspension stability, and minimized nanoparticle sizes for the nanocolloid.
机译：该研究采用电火花排放方法在常温和压力下制备铂碘化铂纳米细胞。用99.5％铂组成的电线作为电极施加，采用250ppm液体碘作为介电流体。施加电气放电机以在电极之间产生循环直流脉冲功率。五组接通和关闭时间（t _（开） - t _（关闭））参数，即10-10,30-30,50-50,70-70和90-90μs实施以鉴定最佳的纳米细胞制备条件。使用紫外线可见光光学仪，Zetasizer和透射电子显微镜来检查纳米胶体的性质。结果表明，10-10μs的T _（ON） - T _（OFF）参数集是铂碘化物纳米胶体制剂的最理想。利用该参数集，纳米孔的特征波长分别为285和350nm;其吸光度值分别为0.481和0.425;其Zeta潜力和粒度分别为30.3mV和61.88nm。该参数设定产生最大化的吸光度，令人满意的悬浮稳定性和最小化的纳米孔的纳米颗粒尺寸。

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