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Glycerol as green hydrogen source for catalytic reduction over anisotropic silver nanoparticles

机译：甘油作为绿色氢气源，用于各向异性银纳米颗粒催化还原

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The search for nanomaterials for catalysis of transfer hydrogenation reactions with green hydrogen sources is an important topical issue. In this work we show that anisotropic silver nanoparticles act as efficient catalysts for p -nitrophenol (Nip) reduction with glycerol, a renewable biomass byproduct, as the green hydrogen source. Anisotropic silver nanoparticles (AgNPs) were prepared using polyol method in presence of Cu ~(2+) salt as an etchant. These AgNPs are found to be a combination of mixture of anisotropic shapes and spherical faceted nanoparticles. The percentage of anisotropic shapes in the distribution changes with amount of etchant used. Effect of shape and size of AgNPs on the catalytic kinetics of Nip reduction using glycerol as a hydrogen source was investigated. The AgNPs sample having more nanoparticles with anisotropy and finer average particle size exhibits better kinetics, lower activation energy and better turnover frequency (TOF).
机译：寻找与绿色氢气源的转移氢化反应催化的纳米材料是一个重要的局部问题。在这项工作中，我们表明各向异性银纳米粒子用作与甘油，可再生生物质副产物的甘油，作为绿色氢气源的高硝基苯酚（NIP）还原的有效催化剂。使用多元醇方法在Cu〜（2+）盐作为蚀刻剂存在下制备各向异性银纳米颗粒（AgNP）。发现这些agnps是各向异性形状和球形刻面纳米颗粒的混合物的组合。分布中各向异性形状的百分比随着所使用的蚀刻剂的量而变化。研究了使用甘油作为氢源的催化动力学对凝乳催化动力学的形状和尺寸的影响。具有更多纳米颗粒具有各向异性和更细平均粒度的AgNP样品表现出更好的动力学，降低激活能量和更好的周转频率（TOF）。

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