First mononuclear copper(Ⅱ) electro-catalyst for catalyzing hydrogen evolution from acetic acid and water

作者：Jie Ping Cao; Ting Fang; Ling Zhi Fu; Ling Ling Zhou; Shu Zhong Zhan

来源：International Journal of Hydrogen Energy, 2014, 39(26): 13972-13978.

• Mononuclear copper(Ⅱ)-complex
• Molecular electro-catalyst
• Hydrogen evolution

The reaction of 2,3-bis(2-hydroxybenzylideneimino)-2,3-butenedinitrile (H_2L) and CuCl_2-2H_2O affords a copper(Ⅱ) complex [CuL] 1, a new molecular electrocatalyst, which has been determined by X-ray crystallography. Electrochemical studies indicate that the catalyst is the first mononuclear copper(Ⅱ) species with a turnover frequency of 457 (pH 7.0) moles of hydrogen per mole of catalyst per hour at an overpotential of 817 mV us SHE, which is higher than some reported molecular catalysts for electrochemical hydrogen production from neutral water. Sustained proton reduction catalysis occurs at glassy carbon (GC) to give H_2 over a 72 h electrolysis period with 91.5% Faradaic yield and no observable decomposition of the catalyst.

• 单位
  华南理工大学