Acidification of potassium bismuthate for enhanced visible-light photocatalytic degradation ability: An effective strategy for regulating the abilities of adsorption, oxidation, and photocatalysis

Wu, Weidong; Lü, Cong; Yuan, Meng; Tian, Yuanyu; Zhou, Haifeng

doi:10.1016/j.apsusc.2020.148873

Cited by 28 publications

(9 citation statements)

References 57 publications

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“…The adsorption is more fitted with Freundlich isotherm model (R 2 =0.968). The data conforms to the Langmuir adsorption isotherm, as seen in the following formulation, [23][24][25][26]:…”

Section: Adsorption Isothermssupporting

confidence: 68%

“…Thermodynamic parameters provide accurate data on adsorption-related changes in the inherent energy and should be evaluated appropriately. In this analysis, the following equations were used to measure the following adjustments to predict the mechanism of adsorption by using the free energy of adsorption (∆G°), entropy (∆S°) and enthalpy (∆H°) [23][24][25][26][27][28]:…”

Section:  Effect Of Temperaturementioning

confidence: 99%

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Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

et al. 2021

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Dyes pollution is a major problem in the water, especially since the main factor is textile factories. The treatments for this problem through nanomaterials have taken a broad scope and many studies. In this study, trinary Novel metals oxide [CuNiFe2O5] nanocomposite is successfully synthesized by Uv-irradiation presses with a maximum intensity wavelength at 365 nm. The nanocomposite was investigated by scanning and transmission electron microscopy measurements (SEM and TEM), and their crystal structure is obtained by the X-ray diffraction technique (XRD). The percentage of elements on the sample was determinate by an Energy-dispersive X-ray spectroscope (EDX) and X-ray mapping. The energy gap is equal to 2.48 eV calculated by photoluminescence spectroscopy (PL). Incorporating CuNiFe2O5 NPs enhanced the uptake of Cibacron brilliant red dye (CBR). A faster CBR adsorption onto CuNiFe2O5 nanocomposite at a contact time of 75 min. The Freundlich (R2 > 0.9684) and pseudo-second-order (R2 > 0.9749) models were most appropriate in the description of the adsorption process. A thermodynamic study was performed to calculate the ΔG, ΔH, and ΔS parameters of 1.415 kJ/mol, 7.63 J/mol K, and 20.8 J/mol. Finally, the novel synthesized nanocomposite is a good adsorbate surface for Cibacron brilliant red dye.

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“…The adsorption is more fitted with Freundlich isotherm model (R 2 =0.968). The data conforms to the Langmuir adsorption isotherm, as seen in the following formulation, [23][24][25][26]:…”

Section: Adsorption Isothermssupporting

confidence: 68%

Section:  Effect Of Temperaturementioning

confidence: 99%

Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

et al. 2021

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“…semiconductor nanosheets as cocatalysts 2.3.1 | Highly exposed surface sites Photocatalytic redox reactions typically occur on the catalyst's surface, influenced by the atom arrangement and densification on the crystalline surface. 31 Excessively high or low adsorption free energies are detrimental to the binding between the catalyst and the reactant molecules. Numerous theoretical calculations and experimental results verify that the Gibbs free energy of adsorption of hydrogen atoms at the edge and basal positions of 2DSNs is close to zero.…”

Section: Unique Properties Of 2dmentioning

confidence: 99%

2D semiconductor nanosheets for solar photocatalysis

Cai,

Wei,

et al. 2023

EcoEnergy

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In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in the exploration of renewable and clean energy production. These have garnered significant attention from researchers. The nanosheets are marked by their extraordinary electronic, optical, and chemical attributes, positioning them as attractive foundational components for heterogeneous photocatalysts. This review diligently summarizes both the seminal work and ongoing developments pertaining to 2D semiconductor nanosheets and their application to solar energy within the context of heterogeneous photocatalysis. We begin by detailing the distinctive properties of 2D semiconductor nanosheets, concentrating on their pivotal roles in augmenting photocatalytic efficiency, and explaining the intrinsic mechanisms that govern the migration rate of photogenerated carriers on the material's surface. Subsequently, we delineate the methods employed to synthesize typical 2D semiconductor nanosheets. In alignment with the overarching objective of expanding light absorption capacity and accelerating charge transfer, we also examine the current research on the hybridization techniques involving 2D materials of varied dimensions, as well as their deployment in diverse photocatalytic applications. We conclude by identifying promising avenues and potential challenges that await further exploration in this burgeoning field.

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“…The stronger the PL signal in the band, the higher the recombination rate of photogenerated carriers. [32][33][34] The PL spectra of MoS 2 , graphene, and MoS 2 /graphene planar heterojunctions are detected and given in Figure 2a. Obviously, it can be seen that, compared with MoS 2 and graphene, the PL spectrum intensity of MoS 2 / graphene heterostructure is the lowest, and the PL spectrum intensity of graphene is the highest.…”

Section: Pl Spectrum-based Performance Predictionmentioning

confidence: 99%

Microwave‐Driven Construction of MoS₂/Graphene Heterostructure for Enhanced Photodegradation under Natural Light

Zhang

Gao

Zhu

et al. 2022

Physica Status Solidi (a)

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2D materials-based heterostructure has an abundant charge transport channel and shortened charge transport distance, which can realize the effective transfer and separation of photo-generated carriers. Herein, heterostructures of MoS 2 / graphene are fabricated for photocatalytic degradation under natural light. An excellent performance of methylene blue (MB) photodegradation is found, which surpassed the ability of the monomer materials of 2D MoS 2 and graphene. Furthermore, the optimal mass ratio of the precursors and the micromorphology of the as-constructed heterostructures are also confirmed.

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Acidification of potassium bismuthate for enhanced visible-light photocatalytic degradation ability: An effective strategy for regulating the abilities of adsorption, oxidation, and photocatalysis

Cited by 28 publications

References 57 publications

Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

2D semiconductor nanosheets for solar photocatalysis

Microwave‐Driven Construction of MoS₂/Graphene Heterostructure for Enhanced Photodegradation under Natural Light

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Acidification of potassium bismuthate for enhanced visible-light photocatalytic degradation ability: An effective strategy for regulating the abilities of adsorption, oxidation, and photocatalysis

Cited by 28 publications

References 57 publications

Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

Cibacron red dye removal in aqueous solution using synthesized CuNiFe2O5 Nanocomposite: thermodynamic and kinetic studies

2D semiconductor nanosheets for solar photocatalysis

Microwave‐Driven Construction of MoS2/Graphene Heterostructure for Enhanced Photodegradation under Natural Light

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Product

Resources

About

Microwave‐Driven Construction of MoS₂/Graphene Heterostructure for Enhanced Photodegradation under Natural Light