Carbon materials with tailorable structures and superior properties have great potential applications in environmental protection, energy conversion, and catalysis. Plant biomass as abundant and green non-toxic raw materials has been considered as good precursors for synthesizing heteroatom-doped carbon materials. However, few studies have been reported on the different natures of carbon materials derived from different parts of the same plant biomass. In this study, we prepared carbon materials from the petioles and blades of apricot leaves by direct pyrolysis without additives. Detailed characterizations indicate that these two carbon materials are similar in element composition and graphitization degree, but differ greatly in surface area and pore volume. These differences can be attributed to the different contents of inorganic salts, vascular bundles, and proteins in petioles and blades. When used as catalysts for the oxidation of ethylbenzene, the petiole-derived carbon shows better catalytic performance than the blades derived carbon due to its high surface area, large average pore size, and doped nitrogen atoms. Furthermore, the carbon catalysts derived from the petioles and blades of poplar leaves and parasol tree leaves show the same difference in catalytic reaction, implying that the above-mentioned conclusion is rather universal, which can provide reference for the synthesis of carbon materials from leaves.

中文翻译：

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源自杏叶的叶柄和叶片的自氮掺杂碳材料，可作为无金属催化剂用于芳香族烷烃的选择性氧化

具有可定制结构和优异性能的碳材料在环境保护，能量转换和催化方面具有巨大的潜在应用。植物生物质作为丰富且绿色的无毒原料已被认为是合成杂原子掺杂碳材料的良好前体。但是，关于源自同一植物生物量不同部分的碳材料的不同性质的报道很少。在这项研究中，我们通过无添加剂的直接热解从杏叶的叶柄和叶片中制备了碳材料。详细的特征表明这两种碳材料的元素组成和石墨化程度相似，但表面积和孔体积却相差很大。这些差异可以归因于无机盐含量的不同，血管束以及叶柄和叶片中的蛋白质。当用作乙苯的氧化催化剂时，叶柄衍生的碳由于其高表面积，大的平均孔径和掺杂的氮原子而比叶片衍生的碳表现出更好的催化性能。此外，由杨树叶片和阳伞叶片的叶柄和叶片衍生的碳催化剂在催化反应中表现出相同的差异，这意味着上述结论相当普遍，可为从叶片合成碳材料提供参考。和掺杂的氮原子。此外，由杨树叶片和阳伞叶片的叶柄和叶片衍生的碳催化剂在催化反应中表现出相同的差异，这意味着上述结论相当普遍，可为从叶片合成碳材料提供参考。和掺杂的氮原子。此外，由杨树叶片和阳伞叶片的叶柄和叶片衍生的碳催化剂在催化反应中表现出相同的差异，这意味着上述结论相当普遍，可为从叶片合成碳材料提供参考。