摘要
Developing innovative resource utilization strategies to achieve sustainable recycling of waste-tofuel is highly desirable,yet the design of cost-effective bifunctional catalysts with dual high-efficiency remains unexplored.While the Fenton-like reaction relies on enhancing peroxymonosulfate(PMS)adsorption and accelerating interfacial electron transfer to improve kinetic rates,CO_(2)reduction is constrained by sluggish kinetics and competing hydrogen evolution reaction.Herein,we construct a bifunctional catalyst(NiFe-BNC)featuring dual-atomic active sites by introducing boron atoms into a biomass-derived chitosan substrate rich in functional groups,which optimizes atomic coordination environments.In situ experiments and density functional theory calculations reveal that B-atom modulation facilitates carbon substrate defect enrichment,while the charge-tuning effect between metal sites and"boron electron bridge"optimizes PMS adsorption configurations.This synergistic effect facilitates the interfacial electron transfer and enhances the CO_(2)adsorption capacity of NiFe-BNC by 6 times that of NiFe-NC.The obtained NiFe-BNC exhibits significantly enhanced catalytic activity and selectivity,realizing 99%efficient degradation of volatile organic pollutants in the flowing phase within 2 h and stable mineralization exceeding 60%,while achieving a large current density of 1000 mA cm^(-2) and CO Faraday efficiency of 98%in the flow electrolytic cell.This work innovatively paves a new way for the rational design of cost-effective functional catalysts to achieve carbon cycle utilization.
基金
supported by National Natural Science Foundation of China (Grants No. 92266107, 92366207, 52401245)
the Shaanxi Fundamental Science Research Project in the fields of Mathematics and Physics (Grant No. 22JSQ008)
the China Manned Space Station program
Qin Chuang Yuan Scientist and Engineer Program (2025QCY-KXJ-094)
