Light-Driven CO2 Reduction over Prussian Blue Analogues as Heterogeneous Catalysts

• DOI: 10.1021/acscatal.1c04415
• Publication Date: 2021-12-13T08:32:00Z
• Authors: Xiangyu Meng; Junyi Yang; Chenchen Zhang; Yufang Fu; Kai Li; Minghao Sun; Xingguo Wang; Congzhao Dong; Baochun Ma; Yong Ding
• Keywords: Prussian blue; Quantum yield

The increase of carbon dioxide (CO2) in the atmosphere has resulted a global greenhouse effect and extreme weather. Photocatalytic conversion CO2 into valuable chemicals driven by solar energy is conceivable for solving above problem. Metal–organic frameworks (MOFs) as class organic–inorganic hybrid materials have considerable prospect reduction reaction (CO2RR) photocatalysis. Nevertheless, most MOFs CO2RR still limited photocatalytic performance well selectivity caused having single metal face challenge instability. Herein, 10 Prussian blue analogues (PBAs) heterogeneous catalysts were directly employed CO2RR, which exhibit good CO production. A mass evolution rate 140 mmol g–1 h–1, an apparent quantum efficiency (AQY) about 0.7%, 96.8% obtained over Ni–Co PBA. Notably, activities MIICo PBAs are better than those MII–Fe PBAs, but former's selectivities lower latter. divergence activity dependent on their electron transfer rates, confirmed electrochemical experiments spectral characterization. In addition, density functional theory (DFT) H2 adsorption desorption reveal difference selectivity.