Reaction Mechanism of the Enhanced Reaction Activity and Rate of N-Doped CoO Photocatalysts for Photoreduction of CO2 in Air

• DOI: 10.1021/acsaem.1c02856
• Publication Date: 2021-12-29T17:58:00Z
• Authors: Jingjing Wu; Jie Chen; Jingxuan Hao; Baoxin Ni; Dong Yang; Sheng Zhu; Qunjie Xu; Yulin Min
• Keywords: Oleylamine

The use of light to directly reduce CO2 in the atmosphere is actual development trend photocatalysis applications future. However, it still initial stage exploration. In this work, oleylamine used as a template one-step hydrothermal method obtain N-doped CoO catalyst that can be efficiently air. achieves ultrahigh conversion efficiency (about 75%), amazing CO yield (2.902 mmol g–1 h–1), and superior frequency (TOFCO > 300) 0.03% simulated (Ar/CO2), precipitation rate drops by 18 times, while H2 increases significantly. Quasi-in situ spectroscopy experimental studies show O2 reduction process will promote formation an amorphous layer with small number hydroxyl groups on surface CoO. This amorphous/crystalline interface effectively catalytic CO2. work has inspired further research photoreduction low-concentration