Controlled electropolymerisation of a carbazole-functionalised iron porphyrin electrocatalyst for CO₂ reduction

Abstract

Using a one-step electropolymerisation procedure, CO2 absorbing microporous carbazole-functionalised films of iron porphyrins are prepared in a controlled manner. The electrocatalytic reduction of CO2 for these films is investigated to elucidate their efficiency and the origin of their ultimate degradation.

Artificial photosynthesis: opportunities and challenges of molecular catalysts

“…There are several reports on electrodes generated from polymerization of molecular catalysts. 482,[595][596][597][598] For example, the Ru-bda WOC functionalized with a thiophene group is immobilized to the surface of electrodes by electropolymerization. 599 The polymer film of Ru-bda molecular WOC can electrochemically catalyze water oxidation under an overpotential of B500 mV to reach a current density of 5 mA cm À2 .…”

Transition metal-based catalysts for the electrochemical CO2reduction: from atoms and molecules to nanostructured materials

“…The strategies used for molecular catalyst immobilization can be divided into three main classes: (1) electropolymerization, which leads to the formation of electroactive polymer films with high surface densities and porosity. 72 Depending on the number of voltammetric cycles, a precise control over the thickness and surface coverage may be obtained; (2) covalent attachment to the surface through the presence of different functional groups (amino, diazonium, thiol, carboxylic acids, etc. ), which typically entails the formation of robust films with low surface coverage (E10 À10 -10 À12 mol cm À2 for a monolayer); 73,74 (3) immobilization via non-covalent (p-p stacking) interactions, which generally provides higher catalyst densities (E10 À8 mol cm À2 ) but also a less controlled surface functionalization.…”

Investigation of catalytic reactions on electrode surface by scanning tunneling microscopy

“…36,37] , 需要经过多个步骤的复杂反应过程才能完成. 除Pt基催化剂外, 过渡金属卟啉与酞菁类分子也 是非常重要的一类电催化剂 [40,41] . 在不同的外界条件 下, 它们吸附于基底表面所形成的组装结构也截然不 同 [42] , 而电催化剂的电催化活性又与其组装结构存在 联系.…”