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Electroreduction of CO2 to formic acid has attracted extensive attention,because it is a promising strategy to re-utilize CO2 and reduce greenhouse gas emissions that may favor the mitigation of energy and environment issues.Although great efforts have been made to tune the structure and composition of catalysts aiming to improve CO2 conversion efficiency,seldom studies have been focused on the support regulation.In this work,ordered,porous TiO2 nanotube arrays have been used as model support to study the impact of pore structure for CO2 electrochemical reduction.It has been revealed that Pd supported on TiO2 nanotube arrays substrate exhibits enhanced performance towards CO2 reduction,showing a higher formate Faradaic efficiency of 20%over than Pd supported on TiO2 film substrate.This study will shed new light on the design and synthesis of efficient catalysts by tuning the morphology of support for CO2 conversion. 相似文献
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