Enhanced Electrochemical Reduction of CO2 to CO upon Immobilization onto Carbon Nanotubes Using an Iron‐Porphyrin Dimer,ChemistrySelect

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Enhanced Electrochemical Reduction of CO2 to CO upon Immobilization onto Carbon Nanotubes Using an Iron‐Porphyrin Dimer
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-01-20 , DOI: 10.1002/slct.201904580
Maryam Abdinejad ₁ , Caitlin Dao ₁ , Billy Deng ₁ , Maegan E. Sweeney ₁ , Fabian Dielmann ₂ , Xiao‐an Zhang _{1,

3} , Heinz Bernhard Kraatz _{1,

3}

Affiliation

Electrochemical reduction of carbon dioxide (CO₂) is a viable solution for conversion of atmospheric CO₂ to value‐added materials such as carbon monoxide (CO). In this project, a new urea iron‐tetraphenylporphyrin‐dimer (Fe‐TPP‐Dimer) was synthesized and applied for electrocatalytic CO₂ reduction under both homogeneous and heterogeneous conditions to selectively reduce CO₂ to CO. Immobilization of the catalyst onto carbon nanotubes (CNTs) in aqueous solution resulted in remarkable enhancement of its electrocatalytic abilities, with exceptional turnover frequencies (10 s⁻¹), high faradic efficiency (FE) of ∼90%, and a current density of 16 mA/cm² at −0.88 V vs. RHE. This project exhibits the importance of molecular design in accessing heterogeneous applications with CNTs.

中文翻译：

铁卟啉二聚体固定在碳纳米管上后，增强了将二氧化碳转化为二氧化碳的电化学还原能力

电化学还原二氧化碳（CO ₂）是将大气中的CO ₂转化为一氧化碳（CO）等增值材料的可行解决方案。在该项目中，合成了一种新的脲铁-四苯基卟啉-二聚体（Fe-TPP-Dimer），并在均相和非均相条件下用于电催化还原CO ₂以选择性地将CO ₂还原为CO。将催化剂固定在碳纳米管上（水溶液中的碳纳米管（CNTs）显着提高了其电催化能力，具有卓越的周转频率（10 s ^-1），法拉第效率（FE）约为90％，电流密度为16 mA / cm ²在-0.88 V相对于RHE的条件下。该项目展示了分子设计在使用CNT访问异构应用中的重要性。

更新日期：2020-01-21

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