Enhanced Tribocatalytic CO Reduction by TiO Nanoparticles.

The development of science and technology has brought convenience to our life, however, the CO emission in industrial production has aggravated the greenhouse effect and brought great damage to the ecological environment. Therefore, this study investigated the reduction process of CO under the condition of tribocatalysis. The effect of the rotational speed of the magnetic stirrer, the content of catalyst, the type of sacrificial agent, the reaction time and the initial CO content on the tribocatalytic CO reduction products was investigated by using nano-TiO (P25) as a catalyst. Under the optimal conditions, replacing the reaction solution HO with difficult-to-degrade rhodamine B, methylene blue and methyl orange solutions further increased the contents of CO reduction products: CO (124 μmol h g), CH (49 μmol h g), CH (24 μmol h g), CH (3 μmol h g) and H (2 μmol h g). The dual control of organic pollutants and CO emission problems was realized. Finally, the active substances (e, OH and O ) in the tribocatalytic process were proved to be the key for efficient CO reduction and realization of organic pollutants by electron paramagnetic resonance spectroscopy tests. The method also has a great potential to crack H in HO, which can alleviate the greenhouse effect caused by CO emission and effectively deal with water pollutants and regenerated new energy, which is in line with the national requirements of the circular economy, and is also conducive to the promotion of the sustainable and healthy development of the energy industry.