Metal derivative (MD)/g-C3N4 association in hydrogen production: A study on the fascinating chemistry behind, current trend and future direction

Krishnan, Athira; Yoosuf, Muhsina; Archana, K.; A.S., Arsha; Viswam, Amritha

doi:10.1016/j.jechem.2023.02.008

Cited by 10 publications

(5 citation statements)

References 168 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several literatures have reported that some of the precursor backbones exist in the synthesized samples, and the C 3 N 5 precursor (AT) molecule owns a five-membered ring. 18–20 Also, the absorbance of the bands from 2900 to 3400 cm −1 in C 3 N 5 seems somewhat smaller than that in g-C 3 N 4 . As we discussed with the TEM images (Fig.…”

Section: Resultsmentioning

confidence: 90%

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light

Ito,

Noda

2024

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 90%

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light

Ito,

Noda

2024

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…3.9 mmol H 2 g −1 h −1 ; the highest activity per gram of metal was possessed by 0.1% Rh/g-C 3 N 4 and was equal to 2.4 mol H 2 g Rh −1 h −1 . It is interesting to note that the activity of the Rh/g-C 3 N 4 photocatalysts obtained using [Rh 2 (H 2 O) 8 (µ-OH) 2 ](NO 3 ) 4 •4H 2 O complex as a precursor is orders of magnitude higher than the activity of photocatalysts Rh/g-C 3 N 4 in which RhCl 3 or Rh(acac) 3 acted as a rhodium precursor [20]. Thus, the synthesis method proposed in this work for 0.01-0.5% Rh/g-C 3 N 4 photocatalysts can be considered quite promising, especially considering the acceptable activity at low mass fractions of the metal.…”

Section: Discussionmentioning

confidence: 99%

“…One of the common methods for increasing the activity of g-C 3 N 4 , as well as other semiconductor photocatalysts, is the deposition of metal co-catalysts on the surface of semiconductors [17,18], which leads to the spatial separation of electron-hole pairs. Traditionally, different metals, including noble metals, like Fe, Mn, Zn, Ni, Ag, Au, Cu and Pt, are used as co-catalysts [19,20].…”

Section: Introductionmentioning

confidence: 99%

Photocatalysts Based on Graphite-like Carbon Nitride with a Low Content of Rhodium and Palladium for Hydrogen Production under Visible Light

et al. 2023

View full text Add to dashboard Cite

In this study, we proposed photocatalysts based on graphite-like carbon nitride with a low content (0.01–0.5 wt.%) of noble metals (Pd, Rh) for hydrogen evolution under visible light irradiation. As precursors of rhodium and palladium, labile aqua and nitrato complexes [Rh2(H2O)8(μ-OH)2](NO3)4∙4H2O and (Et4N)2[Pd(NO3)4], respectively, were proposed. To obtain metallic particles, reduction was carried out in H2 at 400 °C. The synthesized photocatalysts were studied using X-ray diffraction, X-ray photoelectron spectroscopy, UV–Vis diffuse reflectance spectroscopy and high-resolution transmission electron microscopy. The activity of the photocatalysts was tested in the hydrogen evolution from aqueous and aqueous alkaline solutions of TEOA under visible light with a wavelength of 428 nm. It was shown that the activity for the 0.01–0.5% Rh/g-C3N4 series is higher than in the case of the 0.01–0.5% Pd/g-C3N4 photocatalysts. The 0.5% Rh/g-C3N4 sample showed the highest activity per gram of catalyst, equal to 3.9 mmol gcat–1 h–1, whereas the most efficient use of the metal particles was found over the 0.1% Rh/g-C3N4 photocatalyst, with the activity of 2.4 mol per gram of Rh per hour. The data obtained are of interest and can serve for further research in the field of photocatalytic hydrogen evolution using noble metals as cocatalysts.

show abstract

“…Consequently, the holes and electrons transfer from VB and CB of semiconductor I to VB and CB of semiconductor II constitute a smaller band gap than that of semiconductor I. Gathering electrons and holes in the semiconductor with smaller band gaps results in a higher recombination rate and lower redox potential for this system [157,158]. In a type II heterojunction, the VB of semiconductor II is higher positive than that of semiconductor I, and the CB of semiconductor I is higher negative than that of semiconductor II (Figure 14b).…”

Section: Conventional Heterojunctionsmentioning

confidence: 99%

Recent Progress on Semiconductor Heterogeneous Photocatalysts in Clean Energy Production and Environmental Remediation

Goodarzi,

Ashrafi-Peyman,

Khani

et al. 2023

Catalysts

View full text Add to dashboard Cite

Semiconductor-based photocatalytic reactions are a practical class of advanced oxidation processes (AOPs) to address energy scarcity and environmental pollution. By utilizing solar energy as a clean, abundant, and renewable source, this process offers numerous advantages, including high efficiency, eco-friendliness, and low cost. In this review, we present several methods to construct various photocatalyst systems with excellent visible light absorption and efficient charge carrier separation ability through the optimization of materials design and reaction conditions. Then it introduces the fundamentals of photocatalysis in both clean energy generation and environmental remediation. In the other parts, we introduce various approaches to enhance photocatalytic activity by applying different strategies, including semiconductor structure modification (e.g., morphology regulation, co-catalysts decoration, doping, defect engineering, surface sensitization, heterojunction construction) and tuning and optimizing reaction conditions (such as photocatalyst concentration, initial contaminant concentration, pH, reaction temperature, light intensity, charge-carrier scavengers). Then, a comparative study on the photocatalytic performance of the various recently examined photocatalysts applied in both clean energy production and environmental remediation will be discussed. To realize these goals, different photocatalytic reactions including H2 production via water splitting, CO2 reduction to value-added products, dye, and drug photodegradation to lessen toxic chemicals, will be presented. Subsequently, we report dual-functional photocatalysis systems for simultaneous energy production and pollutant photodegradation for efficient reactions. Then, a brief discussion about the industrial and economical applications of photocatalysts is described. The report follows by introducing the application of artificial intelligence and machine learning in the design and selection of an innovative photocatalyst in energy and environmental issues. Finally, a summary and future research directions toward developing photocatalytic systems with significantly improved efficiency and stability will be provided.

show abstract

Metal derivative (MD)/g-C3N4 association in hydrogen production: A study on the fascinating chemistry behind, current trend and future direction

Cited by 10 publications

References 168 publications

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light

Photocatalysts Based on Graphite-like Carbon Nitride with a Low Content of Rhodium and Palladium for Hydrogen Production under Visible Light

Recent Progress on Semiconductor Heterogeneous Photocatalysts in Clean Energy Production and Environmental Remediation

Contact Info

Product

Resources

About

Metal derivative (MD)/g-C3N4 association in hydrogen production: A study on the fascinating chemistry behind, current trend and future direction

Cited by 10 publications

References 168 publications

Highly efficient hydrogen production and selective CO2 reduction by the C3N5 photocatalyst using only visible light

Highly efficient hydrogen production and selective CO2 reduction by the C3N5 photocatalyst using only visible light

Photocatalysts Based on Graphite-like Carbon Nitride with a Low Content of Rhodium and Palladium for Hydrogen Production under Visible Light

Recent Progress on Semiconductor Heterogeneous Photocatalysts in Clean Energy Production and Environmental Remediation

Contact Info

Product

Resources

About

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light

Highly efficient hydrogen production and selective CO₂ reduction by the C₃N₅ photocatalyst using only visible light