多孔氮化碳的绿色合成及光催化性能OA

The hydrogenation process in oil fields is a crucial step for improving oil quality and reducing pollutant emissions during crude oil processing.In the context of"dual carbon",the greenization of hydrogen supply mode has become a key factor in industry transformation.The traditional hydrogen production mode has a higher carbon emission intensity and is seriously out of sync with the low-carbon development requirements of the oil and gas industry.Therefore,it is of greater practical significance to develop green and safe hydrogen production methods.This paper uses a mixture of(NH4)2S2O8 and dicyandiamide as the precursor and prepares porous g-C3N4(pg-C3N4)through a thermal polymerization method.The microstructure,light absorption capacity,chemical structure,and crystal structure of pg-C3N4 are analyzed by TEM,XRD,DRS,and FT-IR spectroscopy.The photocatalysis hydrogen production from water splitting and the degradation of pollutants over pg-C3N4 are also investigated.The results show that the specific surface area of pg-C3N4 is approximately 49 m2/g.The results show that the specific surface area of pg-C₃N₄ is approximately 49 m²/g.Compared with bulk g-C₃N₄,pg-C₃N₄ possesses a larger specific surface area and a relatively higher separation efficiency of photogenerated electron-hole pairs,thereby significantly enhancing its performance in water splitting for hydrogen production under visible light as well as its activity in decomposing Rhodamine B(RhB).Moreover,it can maintain good performance and structural stability.This paper provides a green hydrogen production method for the development of hydrogenation processes in oil fields.