In solar thermal utilization, effective photo capture and photothermal conversion are crucial. Improving the nonradiative transition rate of photoexcited electrons is important to enhance the photothermal conversion efficiency and develop efficient solar thermal utilization. Herein, we designed a new kind of light absorption‐enhanced and efficient photothermal conversion material, namely, Fe₂O₃‐functionalized reduced graphene oxide (Fe₂O₃–RGO). On the basis of the selective absorption (350–560 nm) of Fe₂O₃ and the synergistic effect of RGO on the quenching energy transfer of the excited state of Fe₂O₃ and ultrafast nonradiative thermal decay of RGO, the optical absorption capacity, and photothermal conversion efficiency of the composites were effectively improved. Fe₂O₃–RGO can be successfully applied to photothermal conversion phase change materials and seawater solar desalination, showing excellent photothermal conversion ability and application prospect.

中文翻译：

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Fe2O3–RGO的高效光热转化受光激发态的超快淬灭作用指导

在太阳能热利用中，有效的照片捕获和光热转换至关重要。改善光激发电子的非辐射跃迁速率对于提高光热转换效率和开发有效的太阳热利用非常重要。在这里，我们设计了一种新型的光吸收增强型高效光热转换材料，即Fe ₂ O ₃功能化的还原氧化石墨烯（Fe ₂ O ₃ –RGO）。基于Fe ₂ O ₃的选择性吸收（350-560 nm）和RGO对Fe ₂ O ₃激发态的猝灭能量转移的协同作用以及RGO的超快非辐射热衰减，有效提高了复合材料的光吸收能力和光热转换效率。Fe ₂ O ₃ -RGO可以成功地应用于光热转化相变材料和海水太阳能脱盐中，具有优异的光热转化能力和应用前景。