Grafting Molecular Cobalt‐oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation

Abstract

Supporting information for this article is given via a link at the end of the document.

Oxygen doped g‐C3N4 with nitrogen vacancy for enhanced photocatalytic hydrogen evolution

“…In Figure 3a, two peaks around 13°and 27°are attributed to the in-plane structural of repeated triazine units (100) and interlayer stacking motif (002) crystal plane, respectively. [23] It is also worth noting that the (002) peak of g-C 3 N 4 is slightly red-shift from 27.5°to 27.64°, revealing the contractive interplanar distance. [24] Besides, compared to bulk CN, the stronger intensity of the (002) peak of the NCN indicates the regularized 2D conjugated structure can be introduced by acid intercalation.…”

“…The XRD and FT‐IR tests are conducted to reveal the crystal phase and surface chemical groups. In Figure 3a, two peaks around 13 ° and 27° are attributed to the in‐plane structural of repeated triazine units (100) and interlayer stacking motif (002) crystal plane, respectively [23] . It is also worth noting that the (002) peak of g‐C 3 N 4 is slightly red‐shift from 27.5° to 27.64°, revealing the contractive interplanar distance [24] .…”

Improved Light Harvesting and Efficiency for Overall Water Splitting by Embedding TiO2 Transition Layer in GaP/Ga2O3/Ga2Se3 Multijunction Photocatalyst

“…The GaP/TiO 2 /Ga 2 O 3 /TiO 2 /Ga 2 Se 3 sample presented a lower overpotential (−0.54 V) than that of GaP/Ga 2 O 3 /Ga 2 Se 3 (−0.58 V). Because the photocatalytic H 2 evolution activity was highly related to the overpotential of tested samples, [ 9,56 ] the GaP/TiO 2 /Ga 2 O 3 /TiO 2 /Ga 2 Se 3 photocatalyst exhibited better activity for H 2 evolution.…”

Atomic‐ and Molecular‐Level Functionalizations of Polymeric Carbon Nitride for Solar Fuel Production

“…For instance, our group have demonstrated an in situ construction strategy to build cobalt‐oxo cubane complex motifs on the pyridine‐functionalized PCN surface (PCNPy–Co III 4 O 4 ). [ 148 ] As shown in Figure a–c, the cobalt‐oxo cubane complex functionalized PCN exhibited much higher photocatalytic activity for water oxidation toward oxygen evolution as compared to other control samples having different ways of cobalt modifications. The electrochemical analyses showed that grafting Co III 4 O 4 units on the surface of PCN can effectively promote the separation of photogenerated charge carriers, thereby improving the photocatalytic OER activity.…”

“…Reproduced with permission. [ 148 ] Copyright 2020, WILEY‐VCH. d) Photocatalytic hydrogen evolution amount versus irradiation time for PCN 0 , PCN 0 :Ni, PCN–O, PCN–NOH, PCNNOH:Ni, and PCN–NOH:Pt catalysts, e) transient photocurrent responses at bias of 0 V, d) proposed structure of oxime–Ni 2+ in PCN and redox cycle of Ni 2+ during the HER, and f) schematic diagram of excitation and reactions on PCN–NOH:Ni sample under light irradiation.…”