2026-05-30T07:07:30Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/259322026-02-03T12:23:07Zcom_10630_2254col_10630_37959
Electrocatalytic properties of cobalt phosphides and pyrophosphates derived from phosphonate-based-MOFs
Pérez-Colodrero, Rosario Mercedes
Cabeza-Díaz, Aurelio
Vílchez-Cózar, Álvaro
Bazaga-García, Montse
Cañamero-Cebrián, Fernando
Olivera-Pastor, Pascual
Química inorgánica - Congresos
Cristalografía - Congresos
Mineralografía - Congresos
As a class of coordination polymers (CPs), metal phosphonates (MPs) are constructed by coordination bonds connecting metal sites and phosphonate (RPO32−) ligands, where the metal sites are dispersed uniformly at the atomic level. This feature facilitates the construction of metalphosphorous-based/nano-carbon composites by one-step pyrolysis, making them very attractive precursors of Non-Precious Metal Electrocatalysts (NPMCs) [1, 2]
In this work, we report the synthesis, characterization and electrochemical properties of three cobalt(II) coordination polymers
erived from the N,N-bis(phosphonomethyl)glycine (BPMGLY), Co(C4H9O8NP2·nH2O (n=2-4). These MPs, with different frameworks according to the crystallographic data, are used as precursors of new NPMCs by pyrolytic treatment under 5%-H2/Ar
at different temperatures. The electrochemical behavior of the resulting compounds, mainly crystalline cobalt pyrophosphates and/or phosphides, is fully investigated regarding to the Oxygen Evolution and Reduction Reactions (OER and ORR, respectively) as well as Hydrogen Evolution Reaction (HER). In general, cobalt phosphides (CoP) derived from compound Co-BPMGLY-I
(n=4), displayed better performances for the HER with an overpotential of 156 mV
2023-02-08T12:31:02Z
2023-02-08T12:31:02Z
2023
2022
conference output
https://hdl.handle.net/10630/25932
eng
14th Symposium International New trends and strategies in the chemistry of advanced materials with relevance in biological systems, technique and environmental protection
Timișoara, România
20/10/2022
open access