In this work, the biocarbons synthesized by fast pyrolysis at 350°C of raw (BK) and H₃PO₄ treated (TBK) fibrous fraction of non-bleached softwood kraft pulp has been proposed as novel supports for the deposition of PtNi nanocatalysts. The bimetallic nanoparticles were deposited by pulse microwave-assisted reduction using ethylene glycol both as solvent and reducing agent. The physicochemical properties of the resulting materials were evaluated by means of X-ray diffraction, transmission electron microscopy, energy dispersive X-ray microanalysis, and inductively coupled plasma atomic emission spectroscopy, whereas the electrochemical activity towards ethanol oxidation in acid medium was evaluated using cyclic voltammetry and chronoamperometry. Nanosized PtNi particles with average diameters in the range of 2.9–4.1 nm and a nickel content of ca. 30 at% were deposited over both softwood kraft pulp-derived carbon materials. The electrochemical measurements showed that the bimetallic nanoparticles deposited over the acid-treated biocarbon (PtNi/TBK) exhibit superior catalytic performance in terms of activity, onset potential, and poisoning tolerance. The mass activity of the PtNi nanocatalyst supported over TBK was about 1.3 and 6.3 times higher than that of the bimetallic nanoparticles deposited onto BK and Pt/C, respectively. The effect of the carbonaceous material on the electrocatalytic activity is discussed in detail.

在这项工作中，通过在350°C下对原料（BK）和H ₃ PO ₄进行快速热解而合成的生物碳已提出将未漂白的针叶牛皮纸浆的经处理的（TBK）纤维级分作为PtNi纳米催化剂沉积的新型载体。通过使用乙二醇作为溶剂和还原剂的脉冲微波辅助还原来沉积双金属纳米颗粒。通过X射线衍射，透射电子显微镜，能量色散X射线显微分析和电感耦合等离子体原子发射光谱法对所得材料的理化性质进行了评估，而在酸性介质中使用循环法对乙醇氧化的电化学活性进行了评估。伏安法和计时电流法。纳米尺寸的PtNi颗粒，平均直径在2.9–4.1 nm范围内，镍含量约为。30at％沉积在两种软木牛皮纸浆衍生的碳材料上。电化学测量表明，沉积在酸处理过的生物碳（PtNi / TBK）上的双金属纳米颗粒在活性，起始电位和中毒耐受性方面均表现出优异的催化性能。负载在TBK上的PtNi纳米催化剂的质量活性分别比沉积在BK和Pt / C上的双金属纳米颗粒的质量活性高1.3倍和6.3倍。详细讨论了碳质材料对电催化活性的影响。比分别沉积在BK和Pt / C上的双金属纳米颗粒高3倍。详细讨论了碳质材料对电催化活性的影响。比分别沉积在BK和Pt / C上的双金属纳米颗粒高3倍。详细讨论了碳质材料对电催化活性的影响。