Perovskite hydroxide CoSn(OH)₆ nanoparticles were synthesized and used for the first time in the photocatalytic reduction of CO₂ to CO. Under mild reaction conditions and using [Ru(bpy)₃](PF₆)₂ as the photosensitizer, a high photocatalytic efficiency of 19.3 μmol for CO evolution with a high selectivity of 86.46% was obtained. The photocatalytic activity and CO selectivity were further improved by adding weak Brönsted acids, as proton sources, to the system.

中文翻译：

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钙钛矿氢氧化物CoSn（OH）₆纳米立方体可有效地将CO ₂光还原为CO

合成了钙钛矿型氢氧化物CoSn（OH）₆纳米颗粒，并将其首次用于将CO ₂光催化还原为CO。在温和的反应条件下，并使用[Ru（bpy）₃ ]（PF ₆）₂作为光敏剂，具有很高的获得了19.3μmol的CO析出光催化效率，具有86.46％的高选择性。通过向体系中添加弱质子酸布朗斯台德酸作为质子源，进一步提高了光催化活性和一氧化碳选择性。