Harnessing Biogenic Silica: Nanoarchitected Pt₃Pd₁ on Nettle-Derived N,Si-CQDs for High-Performance Methanol Electrooxidation.

ABSTRACT: This study introduces nitrogen- and silicon-containing carbon quantum dots (N,Si-CQDs), synthesized hydrothermally from the sustainable bioresource stinging nettle (Urtica dioica L.), as chemically active supports for Pt, Pd, and Pt₃Pd₁ electrocatalysts. The N,Si-CQDs were characterized by a high concentration of N/O surface functionalities and the presence of biogenic Si. A significant finding is that, with this support, biogenic Si acts as a nucleation template: Pd forms in situ as orthorhombic Pd₉Si₂ nanorods alongside spherical particles, whereas Pt predominantly develops as cubic/quasi-cubic crystals. This templating process promotes faceted (cubic) Pt₃Pd₁ alloy nanoparticles with robust interfacial contact with

SUBMITTER: Beyhan S 

PROVIDER: S-EPMC12566391 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature