講演情報
[20p-P05-1]Enhancing Carbon Dioxide Photoreduction via Incident Light Modulation in Silver Bismuth Iodide/Nanocellulose Films and the Integration of Gold Nanoparticles
〇MingChung Wu1,2, Yin-Hsuan Chang1, Yi-Jing Lu1, Kai-Chi Hsiao1, Ting-Han Lin1 (1.Chang Gung Univ., 2.CGMH)
キーワード：
carbon dioxide reduction、silver bismuth iodide、nanocellulose
The rise in CO2 emissions is a major contributor to global warming and climate change. To counter this, scientists are developing ways to convert CO2 into valuable fuels using solar energy. This process emulates photosynthesis and involves the reduction of CO2 into carbon-based fuels. Particulate photocatalysts, due to their easy fabrication and diverse material configurations, are a promising choice for this process. Moreover, immobilizing these catalysts onto composite polymers enhances their reusability and practicability. In our study, we fabricated a novel, freestanding photocatalyst composite film by immobilizing Ag3BiI6 (SBI) onto a nanocellulose (CNF) transparent film. This was done through a sequential process involving noble metal nanoparticle solutions and thermal evaporation of BiI3. The films, now infused with BiI3, were transferred to an oven for thermal annealing at various temperatures, leading to the creation of SBI. We also explored the influence of the sequence and composition of Au and SBI/CNF on the films' morphology, optical properties, and CO2 photoreduction performance. The resultant SBI-Au/CNF film demonstrated the highest photocatalytic activity for CO2 reduction, achieving a CO yield of 31.96 μmol*g-1*h-1 , and maintaining high stability for prolonged photocatalytic reactions lasting up to 72 h. This study underscores the potential of immobilized SBI materials and induced nanoparticles in enhancing light management. Furthermore, it showcases the versatility of metal nanoparticles in designing high-performance photocatalyst platforms for CO2 reduction.