The conversion of CO 2 into liquid fuels, using only sunlight and water, offers a promising path to carbon neutrality. An outstanding challenge is to achieve high efficiency and product selectivity. Here, we introduce a wireless photocatalytic architecture for conversion of CO 2 and water into methanol and oxygen. The catalytic material consists of semiconducting nanowires decorated with core–shell nanoparticles, with a copper-rhodium core and a chromium oxide shell. The Rh/CrOOH interface provides a unidirectional channel for proton reduction, enabling hydrogen spillover at the core–shell interface. The vectorial transfer of protons, electrons, and hydrogen atoms allows for switching the mechanism of CO 2 reduction from a proton-coupled electron transfer pathway in aqueous solution to hydrogenation of CO 2 with a solar-to-methanol efficiency of 0.22%. The reported findings demonstrate a highly efficient, stable, and scalable wireless system for synthesis of methanol from CO 2 that could provide a viable path toward carbon neutrality and environmental sustainability.

中文翻译：

---

将二氧化碳、阳光和水转化为甲醇的协同助催化剂


仅利用阳光和水将CO 2 转化为液体燃料，为实现碳中和提供了一条有希望的途径。一个突出的挑战是实现高效率和产品选择性。在这里，我们介绍了一种无线光催化架构，用于将 CO 2 和水转化为甲醇和氧气。该催化材料由装饰有核壳纳米颗粒的半导体纳米线组成，具有铜铑核和氧化铬壳。 Rh/CrOOH 界面提供了质子还原的单向通道，使氢能够在核壳界面溢出。质子、电子和氢原子的矢量转移允许将CO 2 还原机制从水溶液中的质子耦合电子转移途径切换为CO 2 氢化，太阳能转化为甲醇的效率为0.22%。报告的研究结果证明了一种高效、稳定且可扩展的用于从CO 2 合成甲醇的无线系统，可以为实现碳中和和环境可持续性提供可行的途径。