Finely dispersed Au nanoparticles on graphitic carbon nitride as highly active photocatalyst for hydrogen peroxide production

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

“…For instance, loading Au nanoparticles on the surface of g-C 3 N 4 resulted in highly efficient and stable H 2 O 2 production because of the favorable two-electron ORR and the inert nature for catalyzing the decomposition of the produced H 2 O 2 over the hybrid catalyst. 144,145 As a noble-metalfree co-catalyst, CoP has also been loaded on the surface of g-C 3 N 4 to improve the photocatalytic H 2 O 2 production efficiency under visible-light illumination by extending the light absorption range and promoting charge separation and electron transfer. 146 Last but not least, a new type of photoelectrochemical (PEC) system without an external bias has also been developed to simultaneously achieve the generation of H 2 O 2 and electricity in recent years.…”

A β-cyclodextrin Modified Graphitic Carbon Nitride with Au Co-Catalyst for Efficient Photocatalytic Hydrogen Peroxide Production

“…Typically, photocatalyst (0.4 g) was put into 100 mL of an aqueous solution including 10 mL of C 2 H 5 OH (sacrificial agent) to evaluate H 2 O 2 production according to the literature [ 21 ]. The system was ultrasonicated for 3 min.…”

“…An important strategy is loading proper co-catalyst on the surface of a photocatalyst to promote the charge separation and the activation of O 2 [ 19 , 20 ]. Our previous study found that finely dispersed Au nanoparticles were excellent co-catalysts for improving the photocatalytic activity of CN toward enhancing the production of H 2 O 2 [ 21 ]. The Au/CN system provided a promising prototype for producing concentrated H 2 O 2 with an extremely low Au loading amount.…”

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

“…Dieser Au/g‐C 3 N 4 ‐Photokatalysator erreichte eine H 2 O 2 ‐Ausbeute von 1320 μmol L −1 nach 240 min Bestrahlung, die 2.3‐mal höher als die Ausbeute bei Einsatz von unmodifiziertem g‐C 3 N 4 ist. In der zweiten Arbeit beobachteten Zuo und Mitarbeiter eine ähnliche Verbesserung der H 2 O 2 ‐Produktion durch den Einsatz eines Au/C 3 N 4 ‐Photokatalysators. Die Autoren verglichen in dieser Studie darüber hinaus den Einfluss unterschiedlicher Kokatalysatoren (Au, Ag, Pd und Pt) auf g‐C 3 N 4 auf die Produktion von H 2 O 2 .…”