Efficient heterogeneous CO2 to CO conversion with a phosphonic acid fabricated cofacial iron porphyrin dimer.
Efficient heterogeneous CO2 to CO conversion with a phosphonic acid fabricated cofacial iron porphyrin dimer.
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DOI：
10.1021/acs.chemmater.7b01115
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发表时间：
2017-08
影响因子：
8.6
通讯作者：
E. Mohamed;Zaki N. Zahran;Y. Naruta
中科院分区：
文献类型：
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作者：
E. Mohamed;Zaki N. Zahran;Y. Naruta
对于开发可再生能源和控制全球变暖，催化剂促进CO2转化为CO是必不可少的。许多CO2到CO转化的分子催化剂显示出很高的活性和稳定性。对于大规模转化，分子催化剂固定化到导电电极是必不可少的。几种高效的分子催化剂已经通过物理键固定在导电电极上。我们发现，通过磷酸锚定将一层高效的铁卟啉二聚体分子催化剂固定在氟掺杂的氧化锡电极上，FTO/Fe2DTPFPP-PO3H2在非水和水溶液中以极低的催化剂负荷将CO2转化为CO具有很高的活性和稳定性。通过在FTO上的SnO2或TiO2纳米颗粒薄介孔层上加载更多的催化剂，实现了高电流密度的CO2到CO的转化。在中性水溶液中，通过对FTO电极进行修饰，克服了FTO电极的非无害行为。
For developing renewable fuels and controlling global warming, catalyst promoted conversion of CO2 to CO is essential. Numerous CO2 to CO conversion molecular catalysts have shown very high activity and stability. For large-scale conversion, immobilization of the molecular catalysts to conducting electrodes is essential. Several efficient molecular catalysts have been immobilized to conducting electrodes via physical bonds. We found that immobilization of a monolayer of the highly efficient Fe porphyrin dimer molecular catalyst via a phosphonic acid anchor to a fluorine-doped tin oxide electrode, FTO/Fe2DTPFPP-PO3H2 showed high activity and stability for CO2 to CO conversion at a very low catalyst loading in nonaqueous and aqueous solutions. A high current density was achieved for the CO2 to CO conversion by loading more amount of the catalyst to a thin mesoporous layer of SnO2 or TiO2 nanoparticles on FTO. In neutral aqueous solutions, the noninnocent behavior of the FTO electrode was overcome by modifyi...