Helical copper-porphyrinic framework nanoarrays for highly efficient CO2 electroreduction

In recent years, metal-organic frameworks (MOFs) have been extensively investigated as electrocatalysts due to their highly efficient electroreduction of CO2. Herein, the electrocatalytic CO2 reduction reaction was by growing helical Cu-porphyrinic MOF Cu meso-tetra(4-carboxyphenyl)porphyrin (TCPP) on Cu(OH)2 nanoarrays (H-CuTCPP@Cu(OH)2) using a sacrificial template method. The results showed that H-CuTCPP@Cu(OH)2 exhibited high acetic acid Faradaic efficiency (FE) 26.1% at −1.6 V vs. Ag/Ag+, which is much higher than value 19.8% obtained for non-helical CuTCPP@Cu(OH)2 (nH-CuTCPP@Cu(OH)2). may be because space more effectively utilized in nanoarrays, resulting greater number active catalytic sites. Furthermore, situ diffuse reflectance infrared Fourier transform spectra stronger CO linear adsorption, indicating better selectivity nH-CuTCPP@Cu(OH)2. this study, we develop new nanomaterials and propose route enhance