Electrochemically substituted metal phthalocyanines, e-MPc (M = Co, Ni), as highly active and selective catalysts for CO2 reduction. Issue 4 (15th January 2018)

• Record Type: Journal Article
• Authors: Cheng, Yi; Veder, Jean-Pierre; Thomsen, Lars; Zhao, Shiyong; Saunders, Martin; Demichelis, Raffaella; Liu, Chang; De Marco, Roland; Jiang, San Ping
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 4(2018)
• Page Start: 1370
• Page End: 1375
• Publication Date: 2018-01-15
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta09208c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : The Fe center in FePc can be electrochemically substituted by Co and Ni, achieving high activity and stability for CO2 reduction. Abstract : Metal-oxide nanoclusters (NCs) such as FeO x, CoO x, and NiO x are incorporated into iron phthalocyanine (FePc) supported on graphene, MO x /FePc, via a facile self-assembly method. MO x /FePc electrocatalysts show high activity, selectivity and stability for the electrochemical CO2 reduction reaction (CO2 RR) as compared with the corresponding metal phthalocyanines, i.e., FePc, CoPc and NiPc, under identical test conditions. Near edge X-ray absorption fine structure (NEXAFS) spectroscopy reveals that MO x /FePc undergoes a metal ion replacement of the iron center of Pc, forming electrochemically substituted metal Pc, e-MPc where M = Co and Ni, co-existing with the replaced FeO x nanoparticles (NPs) in the vicinity of the e-MPc. The results indicate that the e-MPc with in situ dispersed FeO x NPs, FeO x /e-CoPc and FeO x /e-NiPc exhibits excellent activity, high selectivity and stability for the CO2 RR.