Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production
Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production
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DOI：
10.1016/j.cclet.2023.108737
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发表时间：
2023-06
影响因子：
9.1
通讯作者：
Jianwei Li;Joseph W. H. Burnett;C. M. Macias;R. Howe;Xiaodong Wang
中科院分区：
文献类型：
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作者：
Jianwei Li;Joseph W. H. Burnett;C. M. Macias;R. Howe;Xiaodong Wang
我们报道了sio2负载的单金属Pt， Pd, Au, Ni， Cu和Co催化剂用于质子驱动的NAD+再生，共同产生H2。所有金属都对NAD+具有完全选择性，其转换频率顺序（Pt > Pd > Cu > Au， Ni和Co）与电化学析氢反应中观察到的顺序一致。这表明NADH能够在没有外部电位的情况下将金属位点转化为“阴极”，并且NADH到NAD+的反应涉及电子和氢原子的单独转移。缺乏电子的Ptδ+（在CeO2上）提高了TOF，并且多相Pt/CeO2催化剂是可回收的，而不会失去任何活性/选择性。
We report SiO2-supported monometallic Pt, Pd, Au, Ni, Cu and Co catalysts for proton-driven NAD+regeneration, co-producing H2. All metals are fully selective to NAD+where the order of turnover frequencies (Pt > Pd > Cu > Au, Ni and Co) coincides with those otherwise observed in electrochemical hydrogen evolution reactions. This has revealed that NADH is capable of converting the metal sites into a “cathode” without an external potential and the NADH to NAD+reaction involves transferring electron and hydrogen atom separately. Electron-deficient Ptδ+(on CeO2) enhances TOF and the heterogeneous Pt/CeO2catalyst is recyclable without losing any activity/selectivity.