Single Cu Atoms as Catalysts for Efficient Hydrazine Oxidation Reaction,ChemNanoMat

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Single Cu Atoms as Catalysts for Efficient Hydrazine Oxidation Reaction
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-07-01 , DOI: 10.1002/cnma.202000337
Chaoxiong Zhang ₁ , Wenjuan Yuan ₁ , Qian Wang ₂ , Xianyun Peng ₁ , Xijun Liu ₁ , Jun Luo ₁

Affiliation

The development of cost‐effective electrocatalysts is vital for promoting the practical application of hydrazine as a viable energy carrier. However, the catalytic performance of the single‐atom Cu catalyst has not been evaluated with regard to the hydrazine oxidation reaction (HzOR). Herein, single Cu atoms anchored on the surface of the P‐doped C₃N₄ substrate (Cu−SA/PCN) have been synthesized using a simple method that involved pyrolysis and phosphorization. The as‐obtained Cu−SA/PCN catalyst is observed to demonstrate a suitable efficiency for the electrocatalytic hydrazine oxidation at the anode in an alkaline aqueous solution. Remarkably, the catalyst exhibits an excellent electrolytic activity and strong durability for 30 h. Further, it displays a current density of 100 mA cm⁻² at a low applied potential of 0.336 V versus the reversible hydrogen electrode. Therefore, this study provides a strategy to manufacture single atom catalysts for an efficient HzOR in alkaline media.

中文翻译：

单铜原子作为高效肼氧化反应的催化剂

具有成本效益的电催化剂的开发对于促进肼作为可行的能量载体的实际应用至关重要。但是，尚未对肼氧化反应（HzOR）评估单原子Cu催化剂的催化性能。在此，已使用一种涉及热解和磷化的简单方法合成了锚定在P掺杂C ₃ N ₄衬底（Cu-SA / PCN）表面上的单个Cu原子。观察到如此获得的Cu-SA / PCN催化剂在碱性水溶液中对阳极的电催化肼氧化具有合适的效率。值得注意的是，该催化剂具有出色的电解活性和30小时的强耐久性。此外，它显示的电流密度为100 mA cm相对于可逆氢电极，在0.336 V的低施加电势下^-2。因此，本研究提供了一种在碱性介质中制备用于有效HzOR的单原子催化剂的策略。

更新日期：2020-07-01

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