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硅纳米线在吸收光之后还原催化剂镍离子,从而引发以二氧化碳为碳原料的炔烃羧基化反应.镍催化剂的还原态产物在这一固碳反应中能够非常高效地将4-辛炔羧酸化.配位体的给电子基团和吸电子基团的能力不同,将会影响催化剂的氧化还原电位.还原电位由于构成镍催化剂的配位体不同,控制在-1.35到-0.51 V(相对于甘汞电极电位)之间.这种新的光催化反应本质上是利用了硅纳米线在光照时产生的光电子从半导体界面转移到催化剂的现象,通过改变催化剂的配位体实现控制催化剂的还原电位.此方法为实现设计可持续性高效的二氧化碳还原反应提供了更多的选择.
The silicon nanowires reduce the nickel ions of the catalyst after absorbing light, thereby initiating the alkyne carboxylation reaction with carbon dioxide as a raw material of the carbon. The reduced product of the nickel catalyst can very efficiently catalyze the carboxylation of 4-octyne in this carbon sequestration reaction The ability of the ligand to donate electron donating groups and electron withdrawing groups will affect the redox potential of the catalyst.The reduction potential is controlled at -1.35 to -0.51 V due to the different ligands that make up the nickel catalyst, Calomel electrode potential.) This new photocatalytic reaction is essentially the use of silicon nanowires in light generated photoelectrons transfer from the semiconductor interface to the catalyst phenomenon, by changing the catalyst ligand to achieve the control of catalyst reduction Potential This method provides more options for designing a carbon dioxide reduction reaction that is sustainable and efficient.