Nitrogen and sulfur co-doped carbon nanospheres for highly efficient oxidation of ethylbenzene
Nitrogen and sulfur co-doped carbon nanospheres for highly efficient oxidation of ethylbenzene
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氮硫共掺杂碳纳米球高效氧化乙苯
DOI：
10.1039/c8nj02948b
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发表时间：
2018
影响因子：
3.3
通讯作者：
Zhang Shufen
中科院分区：
文献类型：
--
作者：
Liu Minghui;Liu Yingcen;Gao Zhanming;Wang Cui;Ye Wanyue;Lu Rongwen;Zhang Shufen
氮硫共掺杂的碳纳米球由于其独特的物理化学性质而被广泛应用于许多领域。为了实现有效的共掺杂效果，合成方案通常依赖于分步程序，其中特别包括通过使用H2S和硫脲等含硫材料对N掺杂前体进行后处理，从而使该过程耗时且复杂。掺杂控制方面。在这里，我们展示了一种有效的合成策略，通过用于形成碳纳米球的前体的分子设计来实现碳纳米球的指定共掺杂效果。具体而言，我们确定了二氨基苯磺酸和三聚氰胺与甲醛的有效共聚过程，其在室温下得到均匀的树脂纳米球，其中N和S均继承自两种反应物。经过碳化处理后，得到了具有共掺杂元素的碳纳米球，有利于其应用。例如，从该合成方案证明了高性能催化剂具有催化氧化的有希望的潜力。
Nitrogen and sulfur co-doped carbon nanospheres (NS-CNs) have been found to have broad applications in a large variety of areas due to their well tailored physicochemical properties. To achieve an efficient co-doping effect, the synthesis protocols usually rely on a stepwise procedure, which particularly includes a post treatment of the N-doped precursors by using a sulfur-containing material such as H2S and thiourea, thereby making the process time-consuming and complicated in terms of doping control. Here, we demonstrate an effective synthesis strategy to achieve a designated co-doping effect of carbon nanospheres through a molecular design of the precursors used for the formation of carbon nanospheres. Specifically, we identified an efficient co-polymerization process of both diaminobenzenesulfonic acid and melamine with formaldehyde, which gives uniform resin nanospheres at room temperature with both N and S inherited from the two reactants. After a carbonization process, carbon nanospheres were achieved with co-doped elements favorable for their applications. For example, a high performance catalyst was demonstrated from this synthesis protocol with promising potential for catalytic ethylbenzene oxidation.