Wang Lu, Sofer Zdenek, Zboril Radek, Cepe Klara, Pumera Martin
Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.
Department of Inorganic Chemistry, University of Chemistry and Technology, 166 28, Prague 6, Czech Republic.
Chemistry. 2016 Oct 17;22(43):15444-15450. doi: 10.1002/chem.201602616. Epub 2016 Sep 8.
Doping of graphene materials with heteroatoms is important as it can change their electronic and electrochemical properties. Here, graphene is co-doped with n-type dopants such as phosphorus and halogen (Cl, Br, I). Phosphorus and halogen are introduced through the treatment of graphene oxide with PX gas (PCl , PBr , and PI ). Graphene oxides are prepared through chlorate and permanganate routes. Detailed chemical and structural characterization demonstrates that the graphene sheets are covered homogeneously by phosphorus and halogen atoms. It is found that the amount of phosphorus and halogen introduced depends on the graphene oxide preparation method. The electrocatalytic effect of the resulting co-doped materials is demonstrated for industrially relevant electrochemical reactions such as the hydrogen evolution and oxygen reduction reactions.
用杂原子对石墨烯材料进行掺杂很重要，因为这可以改变它们的电学和电化学性质。在此，石墨烯与诸如磷和卤素（氯、溴、碘）等n型掺杂剂进行共掺杂。磷和卤素通过用PX气体（PCl₃、PBr₃和PI₃）处理氧化石墨烯来引入。氧化石墨烯通过氯酸盐和高锰酸盐路线制备。详细的化学和结构表征表明，磷和卤素原子均匀地覆盖在石墨烯片上。发现引入的磷和卤素的量取决于氧化石墨烯的制备方法。所得到的共掺杂材料对诸如析氢和氧还原反应等工业相关的电化学反应表现出电催化作用。
