Converting CO2 into energy-rich fuels and high-value chemicals using solar energy is one of the sustainable solutions to mitigate reliance on fossil fuels, yet attaining the required conversion efficiency and selectivity to products such as methanol remains challenging. Here, we present In2O3 nanowires decorated with plasmonic Au nanoparticles with improved activity for photothermal CO2 hydrogenation to methanol. Under light irradiation, the localized surface plasmon resonance induced by the Au nanoparticles alleviates the thermodynamic constraints of methanol synthesis. This results in a significant increase in methanol production rate (320 μmol·g−1·h−1) alongside meaningful improvement in methanol selectivity compared with the purely thermal catalytic process. This work provides insights into the benefits of harnessing plasmonic nanoparticles to improve upon thermocatalysis via light utilization.

中文翻译：

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Au/In2O3 纳米线上光热催化 CO2 加氢制甲醇


利用太阳能将二氧化碳转化为能源丰富的燃料和高价值化学品是减轻对化石燃料依赖的可持续解决方案之一，但实现甲醇等产品所需的转化效率和选择性仍然具有挑战性。在这里，我们提出了用等离子体金纳米颗粒装饰的 In2O3 纳米线，其光热 CO2 加氢生成甲醇的活性得到了改善。在光照射下，金纳米粒子引起的局域表面等离子体共振减轻了甲醇合成的热力学约束。与纯热催化过程相比，这导致甲醇生产率显着提高（320 μmol·g−1·h−1），同时甲醇选择性也显着提高。这项工作提供了关于利用等离子体纳米粒子通过光利用来改进热催化的好处的见解。