Recent advances in the improvement of g-C3N4 based photocatalytic materials

Recent Progress in Doped g-C3N4 Photocatalyst for Solar Water Splitting: A Review

“…To make high utilization of solar energy, the exploration of visible-light-active photocatalysts is highly desirable. In 2009, Wang et al developed the pioneering work on g-C 3 N 4 for visible-light–driven photocatalytic water splitting( Wang et al, 2009 ), and g-C 3 N 4 -based photocatalysis has drawn considerable attention in the last decade ( Xiao et al, 2021 ; Xing et al, 2021 ; Chen et al, 2022a ) ( Figures 1A–E ). For unification in this study, we will consider the two kinds of materials with triazine (C 3 N 3 ) unit or tri-s-triazine (C 6 N 7 ) unit ( Figure 1A ) to name as g-C 3 N 4 .…”

“…Although the g-C 3 N 4 -based photocatalysis has been fully discussed in many recent review articles( Li et al, 2020a ; Li et al, 2021a ; Chen et al, 2021 ; Xing et al, 2021 ; Zhu et al, 2021 ; Chen et al, 2022b ), a relative focus review about doping strategies to modify g-C 3 N 4 for improving the efficiency of water splitting is still lacking. Compared with other effective strategies for modification of g-C 3 N 4 , like heterojunction construction, defect introduction, and nanostructure controlling, the modification process of g-C 3 N 4 can be comparatively simplified by element doping to tune the band gap, which considerably broadens the light absorption and accelerates the electron-hole pair separation ( Li et al, 2020b ).…”

Humidity-Independent Photocatalytic Toluene Mineralization Benefits from the Utilization of Edge Hydroxyls in Layered Double Hydroxides (LDHs): A Combined Operando and Theoretical Investigation

“…Photocatalysis has been recognized as powerful technology in environmental cleaning such as self-cleaning of building materials, antifogging, antibacterial exertion, and pollutants degradation. − The photocatalytic effects are realized by the redox reactions caused by photoinduced electrons (e – ) and holes (h + ) generated on the heterogeneous solid surfaces of photocatalysts. − Several reactive species are generated through the reactions with the participation of photoinduced holes and electrons, which are considered to be involved in the oxidative and reductive reactions in photocatalysis, respectively. Because photocatalysts are practically used with the existence of water vapor under aerobic conditions, photocatalytic reactions usually involve oxygen and water molecules as indispensable reactants. , …”

Temperature-Driven Morphology Control on CdSe Nanofractals and Its Influence over the Augmented Rate of H2 Evolution: Charge Separation via the S-Scheme Mechanism with Incorporated Cu3P

“…The chronicle of semiconductors as a photocatalyst, which can be used for water splitting, had been proven by Fujishima and Honda during the 20th century, and it paved the way for exploration of various semiconductor materials for photocatalytic water splitting. − Generally, the most important steps which affect a photocatalyst are light absorption, photoexciton generation, charge separation, and their transfer to the respective redox reaction. ,− In this scenario, a motley of narrow and wide band gap semiconductors such as metal sulfides (ZnCdS, CuInS 2 , Cu 2 S, ZnS, and CdS), − metal oxides (BiOCl, TiO 2 , SrTiO 3 , ZnO, NiO, CuO, BiVO 4 , etc. ), − oxynitrides, metal-free semiconductors, and oxysulfides were explored for photocatalytic activity. − In spite of many innovations, some hindrances appeared to be indispensable. The major setback is the shortage of effective usage of visible light which contributes about half of the solar spectrum, fast recombination of charged species, and lack of active sites over the catalyst surface, which is found to be inevitable .…”