Cobalt Oxide Encapsulated in C2N-h2D Network Polymer as a Catalyst for Hydrogen Evolution

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• 作者：Javeed Mahmood ; Sun-Min Jung ; Seok-Jin Kim ; Jungmin Park ; Jung-Woo Yoo ; Jong-Beom Baek
• 刊名：Chemistry of Materials
• 出版年：2015
• 出版时间：July 14, 2015
• 年：2015
• 卷：27
• 期：13
• 页码：4860-4864
• 全文大小：322K
• ISSN：1520-5002

文摘

With cobalt oxides as promising catalysts for hydrogen generation, 2D network polymer-supported cobalt-oxide catalysts with good crystallinity are highly anticipated to enhance catalytic performance. Here we report the fabrication of a 2D nitrogenated network polymer-encapsulated cobalt-oxide (Co@C₂N) catalyst via an in situ solvothermal synthesis. Co@C₂N exhibits outstanding catalytic activities for hydrogen (H₂) generation from the hydrolysis of alkaline sodium borohydride (NaBH₄) solutions. The rate of maximum hydrogen generation is comparable to the best reported values for catalysts containing other noble metals in alkaline solutions. Furthermore, Co@C₂N can also catalyze the in situ reduction of a nitro group into an amino group (4-nitrophenol to 4-aminophenol) in the presence of NaBH₄. The origin of high catalytic activity with enhanced stability could be due to the strong interaction between the cobalt-oxide nanoparticle and the C₂N framework, which contains a large portion of nitrogen.