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Sustainable route of synthesis platinum nanoparticles using orange peel extract

机译：橙皮提取物合成铂纳米粒子可持续途径

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Platinum is the best catalyst to promote electrochemical reactions in fuel cell. Despite the high cost of platinum, finding a cheaper, sustainable, and environmentally to produce catalyst is needed. Green synthesis has been used to produce metal nanoparticles using reducing agents drawn from natural sources. In this study, the green synthesis of platinum nanoparticles is using orange peel extract as a bio-reducing agent. The reaction to produce platinum nanoparticles is undertaken in both acidic and alkaline media and has been employed at different selected pH values. The catalyst was physically and electrochemically characterized by X-ray diffraction (XRD), energy-dispersive X-ray (EDX), transmission electron microscope (TEM), and cyclic voltammetry. The prepared platinum nanoparticles have different distributions at different pH, while the particle size of the platinum remains in the range of 1.6-4.0 nm. The platinum nanoparticles are supported on carbon black for methanol oxidation reaction. The electrochemical analysis reveals that the methanol oxidation peak of the prepared platinum supported on carbon black is at 0.9 V (vs. RHE). The synthesized platinum nanoparticles have strong potential to be used in the methanol oxidation reaction in a DMFC, as they are well distributed, but the nanoparticles need further improvement to be applied in carbon support and alloying to reduce the amount of platinum.
机译：铂是促进燃料电池中的电化学反应的最佳催化剂。尽管铂成本高，但需要较便宜，可持续和环境生产催化剂。使用从天然来源吸收的还原剂生产金属纳米粒子的绿色合成。在该研究中，铂纳米粒子的绿色合成使用橙皮提取物作为生物还原剂。在酸性和碱性培养基中进行制备铂纳米颗粒的反应，并在不同选定的pH值下使用。催化剂物理和电化学以X射线衍射（XRD），能量分散X射线（EDX），透射电子显微镜（TEM）和循环伏安法为特征在于物理和电化学。制备的铂纳米颗粒在不同的pH下具有不同的分布，而铂的粒度保持在1.6-4.0nm的范围内。铂纳米颗粒在炭黑上负载用于甲醇氧化反应。电化学分析表明，在炭黑上负载的制备铂的甲醇氧化峰为0.9V（Vs.RHE）。合成的铂纳米颗粒具有强大的电位，在DMFC中甲醇氧化反应中使用，因为它们分布得很好，但纳米颗粒需要进一步改善碳载体和合金化以减少铂的量。

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