Graphdiyne (g‐C_nH_2n−2)‐Supported Organic–Inorganic Composites with Zinc Cadmium Sulfide for Photocatalytic Hydrogen Evolution

Abstract

As a new 2D carbon hybrid material, graphdiyne (GD) has attracted much attention due to its good conductivity, adjustable electronic structure, and special electron transfer enhancement properties. Due to its special properties, it has great potential in the field of photocatalytic hydrogen evolution. Considering the modification of GD from the perspective of nano size and bandgap matching, CuS@GDY hybrids to modify ZnCdS are introduced, and the sheet hybrid improved ZnCdS nanoparticles' dispersion. From another point of view, GD not only enhances the optical absorption of the composite but also acts as the main reduction site. Meanwhile, when GD appears in ZnCdS/CuS heterojunction in the form of an electronic bridge, the separation efficiency of photoinduced carriers in ternary system is greatly improved. Finally, the charge transfer mode of the composite system assisted by GD through radical trapping and in situ X‐ray photoelectron spectroscopy experiments are analyzed and verified. The ternary hybrid ZnCdS/CuS@GD prepared in this experiment has excellent photoelectrochemical properties and stability. The design idea and characterization analysis of this article can provide reference and reference value for further research of graphite acetylene in the field of photocatalysis.

Graphdiyne (CnH2n−2)/NiWO4 self-assembled p–n junction characterized with in situ XPS for efficient photocatalytic hydrogen production

“…So as to study the combination state of the catalyst, the change of binding energy of each catalyst after recombination and the relationship between the catalysts, we conducted XPS tests. As the figure 4(a) shown, the C 1s spectrum of the catalyst, the binding energy is 284.50 eV and 284.78 eV, respectively, from the sp 2 and sp of C-C [37,38]. It is not difficult to see through observation that the peak area of the characteristic peaks represented by sp 2 and sp is 1:2, which represents that the ratio of three bonds to single bonds in GDY is 1:2.…”

Graphdiyne Preparation and Application in Photocatalytic Hydrogen Evolution

“…GDY has become an excellent matrix for combining with other semiconductors. So far, a series of GDY-based heterojunction photocatalytic materials have been reported for photocatalytic hydrogen production, such as metal oxides, − sulfides, − carbon nitride, MOF, layered double hydroxide, , and so on.…”

Graphdiyne/Ag2Mo2O7 S‐Scheme Heterojunction for Photocatalytic Hydrogen Production Promoted with Efficient Photogenerated Carriers Separation

“…Furthermore, a large number of C≡C on its surface can anchor metal ions or nanoions, etc., thereby making the catalyst more stable and more active. [16] Since Academician Li successfully prepared it for the first time in 2010, [17] GDY has attracted widespread attention from the energy community due to its excellent structural properties and has been used in many fields such as photoelectrocatalysis [18,19] and smart devices. [20] Among them, many preparation methods of GDY have been produced in the photocatalysis field.…”