Enhancing the durability of Au clusters in CO 2 photoreduction via encapsulation in Cu-based metal-organic frameworks.

Here, we report the encapsulation of Au 25 nanoclusters in a Cu 3 (BTC) 2 metal-organic framework (Au 25 @Cu-BTC), which can achieve CO 2 photoreduction for selective CO production in a gas-solid reaction system at low-concentration CO 2 atmospheres (even to 0.1%), with remarkably enhanced durability up to at least 48 h.