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首页> 外文期刊>RSC Advances >Color conversion of the magnetically separable Al/Fe oxide RNGO in the selective oxidation of benzyl alcohol induced the observation of its morphology change
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Color conversion of the magnetically separable Al/Fe oxide RNGO in the selective oxidation of benzyl alcohol induced the observation of its morphology change

机译：磁分离铝/铁氧化物RNGO在苯甲醇选择性氧化中的颜色转换诱导了其形态变化的观察

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Herein, via integrating the merits of Fe-based nanoparticles and graphene oxide, magnetic Al/Fe oxide nanoparticles implanted on reduced N-doped graphene oxide (Al/Fe oxide RNGO) were synthesized by solvothermal reaction followed by thermal annealing with a particular temperature and hold time. The synthesized catalyst exhibited excellent performance with more than 80% yield of the desired product benzaldehyde achieved within a 2-hour reaction time. Due to its distinctive magnetism, the material can easily be separated and recycled for subsequent runs. It also demonstrated exceptional stability and recyclability with regard to its performance in a lifetime test without significant capacity or activity loss. The most remarkable finding was the observation of a color shift during the lifetime test due to the change in the morphology, which was further connected with the catalytic performance; initially, a chaotic structure and a comparable inferior catalytic activity were obtained, whereas a waffle or pastry state and a relatively superior activity were observed later. An additional reference without reactants did not display this morphology change; this result supported the employment of the catalyst in the reaction and provided a new alternative methodology to deduce and verify the mechanism.
机译：在这里，通过结合铁基纳米颗粒和氧化石墨烯的优点，通过溶剂热反应合成了植入还原型N掺杂氧化石墨烯（Al / Fe氧化物RNGO）上的磁性Al / Fe氧化物纳米颗粒。具有特定温度和保持时间的热退火。合成的催化剂表现出优异的性能，在2小时的反应时间内达到了80％以上的所需产物苯甲醛收率。由于其独特的磁性，可以轻松地将其分离并回收用于后续运行。就其在寿命测试中的性能而言，它也表现出出色的稳定性和可回收性，而不会显着降低容量或活性。最显着的发现是在寿命测试过程中观察到由于形态变化引起的色移，这进一步与催化性能有关。最初，获得了混乱的结构和相当低的催化活性，而后来观察到了华夫饼或糕点的状态和相对优越的活性。没有反应物的其他参考文献没有显示出这种形态变化。该结果支持在反应中使用催化剂，并提供了一种新的替代方法来推论和验证机理。

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