Rationally designed dibenzothiophene-S,S-dioxide-based conjugated porous polymers for efficient photocatalytic hydrogen peroxide production
Year: 2026
Type: article
Abstract: Conjugated porous polymers (CPPs) represent a novel class of photocatalysts for hydrogen peroxide (H2O2) production. Their photocatalytic activity can be enhanced through rational design of the electronic structures. Herein, three donor–acceptor (D–A) type CPPs with expanded saddle-shaped structures were constructed by copolymerizing dibenzothiophene-S,S-dioxide with different electron donating units, including triphenylamine, 1,3,5-triphenylbenzene, and 2,4,6-triphenyltriazine. Among the prepared CPPs, the dibenzothiophene-S,S-dioxide-triazine-based polymer shows impressive photocatalytic H2O2 production rate of 2.98 mmol g−1 h−1 under the optimal condition, which is among the top photocatalytic performance reported so far for the existing CPPs. Experimental and theoretical studies revealed that the introduction of triazine linkages not only prolongs carrier lifetime and increases charge separation efficiency, but also reduces the energy barrier for O2 activation. This study elucidates that rational design of dibenzothiophene-S,S-dioxide-based photocatalysts by tailoring electron-donating strength, charge transfer orientation and O2 adsorption sites is crucial for efficient H2O2 production.
Source: Molecular Catalysis
Institution: Wuhan Institute of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,110
OpenAlex ID: W7130517254