The effect of embedding N vacancies into g-C3N4 on the photocatalytic H2O2 production ability via H2 plasma treatment

Production of Hydrogen Peroxide by Photocatalytic Processes

“…[56] demonstrated that nitrogen vacancies could be created in ag-C 3 N 4 photocatalyst by treatment with ad ielectric barrier discharge (DBD) plasma in aH 2 atmosphere.T he authors showed that the evolution of H 2 O 2 with such g-C 3 N 4 photocatalysts having nitride vacancies reached 4.4 mmol L À1 ,1 1-times higher than that of g-C 3 N 4 .Q ue tal. also adopted the DBD method [57] to embed nitride vacancies into ag -C 3 N 4 photocatalyst. Under irradiation with visible light, the photocatalyst with nitrogen vacancies exhibited superior activity than pure g-C 3 N 4 for the production of H 2 O 2 .…”

A comparative perspective of electrochemical and photochemical approaches for catalytic H2O2 production

“…Besides, nitrogen vacancies have been successfully in situ embedded into g-C 3 N 4 moieties through dielectric barrier discharge (DBD) plasma under an H 2 atmosphere. 130 Compared with the direct annealing treatment under an H 2 atmosphere, H 2 plasma treatment can achieve more nitrogen vacancies embedded in g-C 3 N 4 moieties, which facilitated the adsorption of O 2 molecules and the transfer of photo-generated electrons for the subsequent two-electron ORR. Nevertheless, these methods have inherent shortcomings such as high energy consumption and explosive potential.…”

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

“…Die Autoren berichteten, dass die H 2 O 2 ‐Produktion an diesem mit Stickstoff‐Fehlstellen dotierten g‐C 3 N 4 ‐Photokatalysator eine Geschwindigkeit von 4.4 mmol L −1 erreichte und damit 11‐mal schneller als an unmodifiziertem g‐C 3 N 4 verlief. Qu und Mitarbeiter nutzten ebenfalls eine Plasmaentladung, um Stickstoff‐Fehlstellen in einem g‐C 3 N 4 ‐Photokatalysator zu erzeugen . Unter Bestrahlung mit sichtbarem Licht zeigte der so erzeugte Photokatalysator ebenfalls eine im Vergleich zu unmodifiziertem g‐C 3 N 4 verbesserte H 2 O 2 ‐Produktion.…”