Precisely Tuning the Electronic Structure of Organic Polymer Electrocatalysts via Thiophene-Based Moieties for Enhanced Oxygen Reduction Reaction

iScience, Journal Year: 2025, Volume and Issue: 28(3), P. 112007 - 112007

Published: Feb. 12, 2025

Optimizing molecular structures in oxygen reduction reaction (ORR) is crucial for enhancing catalytic efficiency and stability, particularly with respect to the effective adsorption conversion of intermediates. Sulfur-containing heterocyclic compound thiophene can precisely modulate electronic states local charge densities, thereby fine-tuning reactivity microporous polymers, yet, it remains a largely unexplored area. Herein, thiophene-based building blocks featuring diversified linkers into phenyl-containing model Ph-CMP are developed, affording thiophene-fused BPT-CMP thiophene-linked BCT-CMP. The electron density capacity frameworks well regulated through condensation connecting modification, showing excellent half-wave potentials compared reversible hydrogen electrode, surpassing even most metal-free polymer electrocatalysts. Through theoretical calculations experimental results, we have validated that skeleton (BPT-CMP) triggers activation units, exposed pentatomic carbon atom (site-3) serving as active site.

Language: Английский

Design and Mechanism Study of Fast Response MoS2/SnS2 Heterojunction Ammonia Sensor for Gas Detection in Chicken Coops

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179906 - 179906

Published: March 1, 2025

Language: Английский