Single ruthenium atom supported on g-C3N4 as an efficient photocatalyst for nitrogen fixation in ultra-pure water
Li Li, Yu Yuan, Songmin Lin, Wenhui Chu, Dongfeng Sun, Qingmei Su, Shufang Ma, Gaohui Du, Bingshe Xu
Abstract
Ruthenium (Ru) single atoms were decorated on the surface of the graphitic carbon nitride (g-C3N4) successfully in this work. By varieties of characterization, the existence of Ru single atoms and the defects (cyano groups) caused in the process of synthesis have been confirmed. The catalyst decorated by Ru atoms (Ru-CCN-0.05) had better absorption capacity and a wider absorption range of light than the catalyst with no Ru atoms loading on (Ru-CCN-0). Without the help of hole-scavengers, the rate of photocatalytic nitrogen fixation of Ru-CCN-0.05 in ultra-pure water was 2.26 mg L−1 gcat −1 h−1, 1.5 times that of bare g-C3N4.
Topics & Concepts
RutheniumCatalysisPhotocatalysisGraphitic carbon nitrideNitrogenNitrogen fixationPhotochemistryNitrideAbsorption (acoustics)ChemistryCarbon fibersInorganic chemistryMaterials scienceComposite numberOrganic chemistryLayer (electronics)Composite materialAdvanced Photocatalysis TechniquesAmmonia Synthesis and Nitrogen ReductionMXene and MAX Phase Materials