Figure 21.

A) Time course of CO evolution in the photoreduction of CO₂ with water under UV–vis light: a) ZnAl‐LDH nanosheets with size of 30 nm, b) ZnAl‐LDH nanosheets with size of 70 nm, and c) ZnAl–LDH bulk. Catalyst cycling studies of (B) and (C) ZnAl–LDH nanosheets with different particle size under a) Ar atmosphere and b) CO₂ with water vapor. D) Isotope labelled ¹³CO₂ experiments by ZnAl–LDH nanosheets. Reproduced with permission.49