Ambient sunlight-driven CO₂ methanation cannot be realized due to the temperature being less than 80 °C upon irradiation with dispersed solar energy. In this work, a selective light absorber was used to construct a photothermal system to generate a high temperature (up to 288 °C) under weak solar irradiation (1 kW m⁻²), and this temperature is three times higher than that in traditional photothermal catalysis systems. Moreover, ultrathin amorphous Y₂O₃ nanosheets with confined single nickel atoms (SA Ni/Y₂O₃) were synthesized, and they exhibited superior CO₂ methanation activity. As a result, 80% CO₂ conversion efficiency and a CH₄ production rate of 7.5 L m⁻² h⁻¹ were achieved through SA Ni/Y₂O₃ under solar irradiation (from 0.52 to 0.7 kW m⁻²) when assisted by a selective light absorber, demonstrating that this system can serve as a platform for directly harnessing dispersed solar energy to convert CO₂ to valuable chemicals.

由于在用分散的太阳能照射时温度低于80°C，因此无法实现阳光驱动的环境CO ₂甲烷化。在这项工作中，使用选择性光吸收剂来构建光热系统，以在弱太阳辐射下（1 kW m ^-2）产生高温（高达288°C ），该温度是传统温度的三倍。光热催化系统。此外，合成了具有局限的单个镍原子的超薄无定形Y ₂ O ₃纳米片（SA Ni / Y ₂ O ₃），它们表现出优异的CO ₂甲烷化活性。结果，80％的CO ₂转化效率和CH在选择性光吸收剂的辅助下，通过SA Ni / Y ₂ O ₃在太阳辐射下（0.52至0.7 kW m ^-2），通过SA Ni / Y ₂ O ₃实现了7.5 L m ^-2 h ^-1的₄生产率。直接利用分散的太阳能将CO ₂转化为有价值的化学药品的平台。