Advancement in two-dimensional carbonaceous nanomaterials for photocatalytic water detoxification and energy conversion

Untangling the Effect of Carbonaceous Materials on the Photoelectrochemical Performance of BaTaO2N

“…Finally, it is worth noting that the increase in the photocurrent and the decrease in the onset potential observed for BT-GR and BT-CN are related to the respective good and large contact between BaTaO 2 N and graphene or g-C 3 N 4 . In addition to the fact that both graphene and g-C 3 N 4 have high electron accumulation and charge retention properties, these characteristics are particularly associated with their two-dimensional structures. , Therefore, the depolarization of these carbonaceous materials, which are enriched with electrons during the photocatalytic process, depends on their electrocatalytic activity. It can be stated that the electrocatalytic performance of graphene and g-C 3 N 4 is relatively high in both ORR and water reduction reactions. , The fact that BT-GR defines a higher photocurrent density than BT-CN, at both high and low overpotentials, may also be related to the electrochemical properties of graphene , and g-C 3 N 4 . , It is inferred that the higher conductivity and electron transfer properties of graphene , in comparison to that of g-C 3 N 4 increase the efficiency of electron collection during the photoelectrochemical reaction in the presence of BaTaO 2 N (Figure a,c,d).…”

“…In addition to the fact that both graphene and g-C 3 N 4 have high electron accumulation and charge retention properties, these characteristics are particularly associated with their twodimensional structures. 55,56 Therefore, the depolarization of these carbonaceous materials, which are enriched with electrons during the photocatalytic process, depends on their electrocatalytic activity. It can be stated that the electrocatalytic performance of graphene and g-C 3 N 4 is relatively high in both ORR and water reduction reactions.…”

Construction of a novel S-type γ-Bi2O3/CeO2 heterojunction for highly efficient photocatalytic degradation of antibiotics

“…For the II-type heterojunction, the electrons transfer on the conduction band (CB) of the two semiconductors and the holes migrate on their valence band (VB). 38 The redox ability of the holes-electrons decreases in the II-type junction, and the original electrons or holes also repel the foreign electrons or holes. 39 For the traditional and the all-solid-state Z-type junction, the electrons transfer from the CB of a semiconductor to the VB of another semiconductor and the strong redox potentials are preserved.…”

Constructing an n–n junction between CoFe-LDH and NiCoP as bifunctional electrocatalysts for efficient overall water splitting

“…Among them, only type II heterojunctions are beneficial for enhancing charge separation, as the increase in electron density reduces the effective nuclear charge experienced by valence electrons, thereby reducing the binding energy. 17,18 Type II heterojunctions including n-n junctions, p-n junctions, surface heterojunctions and phase junctions provide more opportunities for modulating electron density.…”