Enhanced photocatalytic performance of the N-rGO/g-C<sub>3</sub>N<sub>4</sub> nanocomposite for efficient solar-driven water remediation

Gupta, Shalu; Kumar, Rakesh

doi:10.1039/d3nr06203a

Cited by 5 publications

(2 citation statements)

References 86 publications

(175 reference statements)

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“…where, 'h' and 'ν' represents the plank's constant and frequency of the incident light, respectively. While 'n' is equal to 1/2 for direct band gap semiconductor and 2 for indirect band gap semiconductor and F(R) is the Kubelka-Munk function represented in terms of absorption coefficient (α) and scattering coefficient (S) as [39,40]:…”

Section: Resultsmentioning

confidence: 99%

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Gupta,

Kumar

2024

Semicond. Sci. Technol.

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This study demonstrates a proficient and eco-friendly synthesis of SnO2 nanostructures using a hydrothermal method, without the requirement of extra surfactants. The synthesis was systematically performed by adjusting the molar ratio of stannic chloride to sodium hydroxide and varying the pH settings. It was noted that the pH value rises according to the concentration of sodium hydroxide. A comprehensive analysis was performed to characterize the resulting nanostructures, which involved studying their structural features, chemical composition, morphology, and optical properties. An X-ray diffraction (XRD) analysis showed that increasing the pH values resulted in a noticeable improvement in the crystalline structure and a decrease in the density of surface defects. The SnO2 nanostructures, synthesized using different pH settings, were subsequently assessed for their photocatalytic performance in the degradation of methylene blue (MB) dye under simulated solar irradiation. Surprisingly, the nanostructure produced at higher pH levels showed outstanding results, as 97% of the dye was broken down in just 70 minutes when exposed to simulated solar radiation. The analysis uncovered a maximum rate constant (k) value of 0.04 min−1, determined using pseudo first-order rate kinetics. In order to better understand the photodegradation process, scavenger experiments were performed to identify the active species involved. These investigations provided valuable insights into the complex mechanisms that drive the observed photocatalytic activity. This study not only enhances the progress of SnO2 nanostructures but also highlights their potential as strong and environmentally friendly materials for effective photocatalytic applications.

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Section: Resultsmentioning

confidence: 99%

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Gupta,

Kumar

2024

Semicond. Sci. Technol.

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“…Graphene with atomic-layer thickness and 2D morphology has remarkable electrical conductivity, large specific surface area, and high chemical stability, − emerging as an attractive candidate for constructing graphene-based 0D/2D heterostructures. Several paired 0D/2D graphene systems such as 0D graphene quantum dots with 2D graphene sheets and Ni 2 P encapsulated in N- and S-doped graphene nanosheets have shown improvement in catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Floatable Cu₂(OH)PO₄/rGO Aerogel for Full Spectrum Driven Photocatalytic Degradation of Organic Pollutants

Sun,

Duan,

Zhang

et al. 2024

Langmuir

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Photocatalytic technology is an attractive option for environmental remediation because of its green and sustainable nature. However, the inefficient utilization of solar energy and powder morphology currently impede its practical application. Here, we designed a floatable photocatalyst by anchoring 0D Cu2(OH)PO4 (CHP) nanoparticles on 2D graphene to construct 0D/2D CHP/reduced graphene oxide (rGO) aerogels. The CHP/rGO aerogels have interconnected mesopores that provide a large surface area, promoting particle dispersion and increasing the number of active sites. Moreover, the optical response of the CHP/rGO aerogel has been significantly expanded to cover the full spectrum of the solar light. Notably, the 20%CHP/rGO aerogel displayed a high degradation rate (k = 0.178 min–1) taking methylene blue (MB) as a model pollutant under light irradiation (λ > 420 nm). The enhanced photocatalytic activity is ascribed to the rapid electron transfer in the CHP/rGO heterostructures, as supported by the DFT theoretical calculations. Our research highlights the utilization of full spectrum responsive photocatalysts for the elimination of organic pollutants from wastewater under solar light irradiation, as well as the potential for catalyst recovery using floatable aerogels to meet industrial requirements.

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Performance and reaction mechanism of montmorillonite/α-Fe2O3/starch bio-nanocomposite as high-efficiency photocatalytic degradation of acetaminophen: Characterization, feasibility, and pathway

Pourmadadi,

Aghababaei,

Abdouss

2024

International Journal of Biological Macromolecules

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Enhanced photocatalytic performance of the N-rGO/g-C₃N₄ nanocomposite for efficient solar-driven water remediation

Abstract: This paper describes the synthesis and analysis of a photocatalyst made from a combination of reduced graphene oxide (rGO) and graphitic carbon nitride (g-C3N4) through a simple hydrothermal process. The...

Cited by 5 publications

References 86 publications

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Floatable Cu₂(OH)PO₄/rGO Aerogel for Full Spectrum Driven Photocatalytic Degradation of Organic Pollutants

Performance and reaction mechanism of montmorillonite/α-Fe2O3/starch bio-nanocomposite as high-efficiency photocatalytic degradation of acetaminophen: Characterization, feasibility, and pathway

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Enhanced photocatalytic performance of the N-rGO/g-C3N4 nanocomposite for efficient solar-driven water remediation

Abstract: This paper describes the synthesis and analysis of a photocatalyst made from a combination of reduced graphene oxide (rGO) and graphitic carbon nitride (g-C3N4) through a simple hydrothermal process. The...

Cited by 5 publications

References 86 publications

Green synthesis and photocatalytic proficiency of tunable SnO2 nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Green synthesis and photocatalytic proficiency of tunable SnO2 nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Floatable Cu2(OH)PO4/rGO Aerogel for Full Spectrum Driven Photocatalytic Degradation of Organic Pollutants

Performance and reaction mechanism of montmorillonite/α-Fe2O3/starch bio-nanocomposite as high-efficiency photocatalytic degradation of acetaminophen: Characterization, feasibility, and pathway

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Enhanced photocatalytic performance of the N-rGO/g-C₃N₄ nanocomposite for efficient solar-driven water remediation

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Green synthesis and photocatalytic proficiency of tunable SnO₂ nanostructures: unveiling environmental-friendly strategies for sustainable water remediation

Floatable Cu₂(OH)PO₄/rGO Aerogel for Full Spectrum Driven Photocatalytic Degradation of Organic Pollutants