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Synthesis, characterization and antifungal activities of eco-friendly palladium nanoparticles

机译：环保钯纳米粒子的合成，表征和抗真菌活性

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摘要

Palladium is a versatile catalyst, but the synthesis of palladium nanoparticles (PdNPs) is usually attained at a high temperature in the range of 160 degrees C to 200 degrees C using toxic reducing agents such as sodium borohydride. We report the synthesis of PdNPs using a low-cost and environmentally-friendly route at ambient temperatures. Quercetin diphosphate (QDP), a naturally-derived flavonoid, was employed as a reducing, capping, and stabilizing agent. The effect of temperature was optimized to produce perfectly spherical PdNP nanoparticles with sizes ranging from 0.1 to 0.3 microns in diameter. At relatively higher concentration of QDP, significantly smaller particles were produced with a size distribution of 1-7 nm. Perfectly spherical PdNP nanoparticles are a rare occurrence, especially under ambient room temperature conditions with fast reaction time. The formation of the nanoparticles was confirmed using UV-vis, TEM, EDS, and XRD. HRTEM demonstrated the lattice structure of the PdNPs. The synthesized PdNPs were also tested for their antifungal properties against Colletotrichum gloeosporioides and Fusarium oxysporum. Results showed that the size of the PdNPs played a critical role in their antifungal activity. However, for F. oxysporum, other factors beyond size could affect the antifungal activity including fine-scale, nutrient composition, and target organisms.
机译：钯是通用催化剂，但使用毒性还原剂如硼氢化钠，通常在160℃至200摄氏度的高温范围内以高温在高温下达到钯纳米颗粒（PDNP）的合成。我们在环境温度下使用低成本和环保途径来报告PDNP的合成。槲皮素二磷酸（QDP），天然衍生的类黄酮，用作还原，封盖和稳定剂。优化温度的效果，以产生完美的球形PDNP纳米颗粒，其尺寸范围为0.1至0.3微米。在相对较高的QDP浓度下，产生明显较小的颗粒，其尺寸分布为1-7nm。完美的球形PDNP纳米粒子是一种罕见的发生，特别是在环境室温条件下，反应时间快。使用UV-Vis，TEM，EDS和XRD确认纳米颗粒的形成。 HRTEM证明了PDNP的格子结构。还测试了合成的PDNPS，用于对胶质植物孢子孢子和镰刀菌的抗真菌性能。结果表明，PDNPS的大小在其抗真菌活动中发挥着关键作用。然而，对于F. Oxysporum，超越大小的其他因素可能影响包括细尺，营养成分和靶生物的抗真菌活性。

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  • 来源
    《RSC Advances》 |2020年第10期|共11页
  • 作者

    Osonga Francis J.; Kalra Sanjay; Miller Roland M.; Isika Daniel; Sadik Omowunmi A.;

  • 作者单位

    SUNY Binghamton Dept Chem Ctr Res Adv Sensing Technol &

    Environm Sustainabi POB 6000 Binghamton NY 13902 USA;

    SUNY Binghamton Dept Chem Ctr Res Adv Sensing Technol &

    Environm Sustainabi POB 6000 Binghamton NY 13902 USA;

    SUNY Binghamton Dept Chem Ctr Res Adv Sensing Technol &

    Environm Sustainabi POB 6000 Binghamton NY 13902 USA;

    New Jersey Inst Technol Dept Chem &

    Environm Sci Newark NJ 07102 USA;

    New Jersey Inst Technol Dept Chem &

    Environm Sci Newark NJ 07102 USA;

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  • 正文语种 eng
  • 中图分类 化学;
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