Multi-walled carbon nanotubes supported Pd(II) complexes: A supramolecular approach towards single-ion oxygen reduction reaction catalysts

TY - JOUR

T1 - Multi-walled carbon nanotubes supported Pd(II) complexes

T2 - A supramolecular approach towards single-ion oxygen reduction reaction catalysts

AU - Savastano, Matteo

AU - Passaponti, Maurizio

AU - Giurlani, Walter

AU - Lari, Leonardo

AU - Bianchi, Antonio

AU - Innocenti, Massimo

N1 - © 2020 by the authors

PY - 2020/10/22

Y1 - 2020/10/22

N2 - Lowering the platinum group metal content of oxygen reduction reaction catalysts is among the most prevalent research focuses in the field. This target is herein approached through supported Pd(II) complexes. Starting from a commercial macrocycle, a new ligand is synthesized, its solution behavior and binding properties briefly explored (potentiometry, UV-Vis) and then used to prepare a new catalyst. A supramolecular approach is used in order to obtain homogeneous decoration of carbon nanotubes surfaces, fostering novel possibilities to access single-ion active sites. The novel catalyst is characterized through X-ray photoelectron spectroscopy and scanning transmission electron microscopy and its promising oxygen reduction reaction performance is evaluated via rotating ring-disk electrode and rotating disk electrode in half-cell studies.

AB - Lowering the platinum group metal content of oxygen reduction reaction catalysts is among the most prevalent research focuses in the field. This target is herein approached through supported Pd(II) complexes. Starting from a commercial macrocycle, a new ligand is synthesized, its solution behavior and binding properties briefly explored (potentiometry, UV-Vis) and then used to prepare a new catalyst. A supramolecular approach is used in order to obtain homogeneous decoration of carbon nanotubes surfaces, fostering novel possibilities to access single-ion active sites. The novel catalyst is characterized through X-ray photoelectron spectroscopy and scanning transmission electron microscopy and its promising oxygen reduction reaction performance is evaluated via rotating ring-disk electrode and rotating disk electrode in half-cell studies.

KW - CNTs

KW - Heterogeneous catalysis

KW - ORR

KW - Palladium catalyst

KW - RRDE

KW - Supramolecular interactions

KW - Surface adsorption

UR - http://www.scopus.com/inward/record.url?scp=85093967103&partnerID=8YFLogxK

U2 - 10.3390/en13215539

DO - 10.3390/en13215539

M3 - Article

AN - SCOPUS:85093967103

SN - 1996-1073

VL - 13

JO - Energies

JF - Energies

IS - 21

M1 - 5539

ER -