Nitrogen‐rich graphitic carbon nitride (g‐C₃N₅): Emerging low‐bandgap materials for photocatalysis

Abstract

The bottlenecks in photocatalytic materials primarily center on light absorption capacities and rapid charge recombination. Thus, many gigantic effects have been undertaken by worldwide scientists to address the issues. In this concept, carbon‐based photocatalysts, such as graphene or graphitic carbon nitrides (g‐C3N4), would frequently capture scientific fascination due to their distinct properties in catalytic applications. However, traditional materials would possess the drawbacks mentioned above. In the current era, nitrogen‐rich graphitic carbon nitrides (g‐C3N5) have emerged as a promising star for photocatalytic applications due to the significant enhancements in light absorption properties, which can activate in ultraviolet, visible, and even under near‐infrared irradiations. This review will summarize the recent progress in the fabrication of g‐C3N5 and the photocatalytic application of these based materials by thoroughly investigating current literature studies. Thus, updating the current trend in state‐of‐the‐art materials would motivate researchers to explore the field further.

Unusual aliovalent Cd doped γ‐Bi2MoO6 nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation

“…The peak observed over the range from 100 to 1000 cm -1 corresponds to the orthogonal structure of γ-Bi 2 MoO 6 . [21] The Raman spectra for 8% Cd-BMO present a similar vibration pattern to that observed for BMO, indicating that the doping of Cd 2+ ions does not alter the crystal structure of BMO, in line with the XRD pattern. Note that the spectral response peak observed for Cd-BMO is slightly lower than that for BMO without deviation, indicating that introducing Cd 2+ ions leads to subtle changes in the Mo-O bond.…”

“…Photocatalysts should feature an appropriate band edge to generate free radicals, possess excellent visible light response characteristics, and absorb sufficient visible light to promote the catalytic degradation of pollutants. Currently, many scholars have carried out corresponding research on semiconductor materials such as TiO 2 , [10,11] ZnO, [12,13] SnO 2 , [14][15][16] BiOX (X = I, Cl, Br), [17][18][19] g-C 3 N n (n = 4 or 5), [20,21] MXene, [22] Lignin, [23] Bi 2 WO 6 , [24,25] and Bi 2 -MoO 6 , [26][27][28] which have been applied in the field of global water environment governance.…”

S-Scheme Heterostructured CdS/g-C3N4 Nanocatalysts for Piezo-Photocatalytic Synthesis of H2O2

“…For instance, pristine g-C 3 N 4 frequently displays low catalytic performance due to intrinsic charge recombination and limited light absorption at 460 nm. 12 In this unfortunate circumstance, coupling with other materials, such as CdS, to establish heterojunction structures would construct a promising avenue to resolve the issue in which the flow of charges at the interface could help to prevent electron−hole pair recombination, thus improving catalytic results. Over three decades, there have been several theories proposed to elucidate the charge transportation phenomenon in heterojunction photocatalysts.…”

“…It is well known that a single catalyst possesses distinct shortcomings, such as its limited ability to absorb light and rapid charge recombination, which hampers process efficacy. For instance, pristine g-C 3 N 4 frequently displays low catalytic performance due to intrinsic charge recombination and limited light absorption at 460 nm . In this unfortunate circumstance, coupling with other materials, such as CdS, to establish heterojunction structures would construct a promising avenue to resolve the issue in which the flow of charges at the interface could help to prevent electron–hole pair recombination, thus improving catalytic results.…”

Promoted Hydrogen Peroxide Production from Pure Water on g-C3N4 with Nitrogen Defects Constructed through Solvent-Precursor Interactions: Exploring A Complex Story in Piezo-Photocatalysis

“…The current century has unprecedentedly recorded many energy and environmental crises caused by human production activities. Alternatively, green and inexhaustible energy sources would be in urgent need, forcing researchers to make efforts to seek breakthrough solutions [1,2,3]. From the beginning of civilization, solar energy has been acknowledged for agricultural practices.…”