Degradation of rhodamine B in water by ultrasound-assisted TiO2 photocatalysis

Xu, Dong; Ma, Hailing

doi:10.1016/j.jclepro.2021.127758

Cited by 164 publications

(57 citation statements)

References 36 publications

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“…The generated electrons and highly chemically active holes can decompose organic matter into nontoxic or nonpolluting substances ( Figure a). [ 29 ]…”

Section: Resultsmentioning

confidence: 99%

“…The generated electrons and highly chemically active holes can decompose organic matter into nontoxic or nonpolluting substances (Figure 5a). [29] All 15 types of PDPCs could gradually degrade the rhodamine B (RhB) dye under UV-visible light in 90 min. However, the reaction rates of the PDPCs were significantly different, even under identical preparation procedures.…”

Section: Functional Performance Of Pollen-derived Microstructuresmentioning

confidence: 99%

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Engineering Pollen‐Derived Microstructures to Reveal Material Morpho‐Performance Paradigm

Liu

Zhang

Cheng

et al. 2022

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The morphologies of micromaterials play a key role in their functionality and efficiency across a broad range of applications, including catalysis, environmental remediation, and drug delivery. However, the relationships between the morphologies and performances of micromaterials still need to be further understood, to guide the rational design of effective morphologies for specific applications. A pollen‐derived microstructure library containing multivariate morphological characterization and functional performance data is proposed and constructed here. Systematic multivariate correlation analysis is conducted to extract the key morphological factors influencing the photocatalytic and adsorption efficiencies, to reveal the morpho–performance relationships of pollen‐derived microstructures. Subsequently, a chrysanthemum‐derived microstructure is selected as a typical candidate; it features a unique morphology suitable for advanced photocatalysis and dynamic environmental remediation. To summarize, the construction of a pollen‐derived microstructure library offers a powerful tool for studying the morpho–performance relationships of micromaterials; this can provide significant guidance and inspiration for the rational design of micro/nanomaterials for numerous applications.

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“…The generated electrons and highly chemically active holes can decompose organic matter into nontoxic or nonpolluting substances ( Figure a). [ 29 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Functional Performance Of Pollen-derived Microstructuresmentioning

confidence: 99%

Engineering Pollen‐Derived Microstructures to Reveal Material Morpho‐Performance Paradigm

Liu

Zhang

Cheng

et al. 2022

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“…It shows that the interaction of the two factors has a significant impact on the MB degradation efficiency. TiO 2 nanoparticles loading on the surface of carbon fibers could be formed via the dissociation and reorganization of the crystal structure of P25 in a concentrated alkaline solution [28]. And the modification of carbon fiber by polydopamine can increase the loading content of formed TiO 2 nanoparticles on the surface of carbon fiber.…”

Section: Response Surface Optimizationmentioning

confidence: 99%

Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

Wang¹,

Yu²,

Hu³

et al. 2023

Journal of Renewable Materials

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In this paper, the residue from bamboo factory has been used to design photo-Fenton catalyst, which has the advantages of low cost and magnetic recycling. The photo-Fenton catalytic performance of the biocarbon-based catalyst was excellent and its optimal preparation process was also explored by response surface methodology. First, bamboo-carbon fiber was selected as the photo-Fenton catalyst carrier. Subsequently, the surface of the carbon fiber was modified, with which dopamine, nano-Fe 3 O 4 and nano-TiO 2 were successively loaded by hydrothermal method. After examined single factor tests, four factors including dopamine concentration, ferric chloride mass, P25 titanium dioxide mass and liquid-solid ratio were selected to the characteristic values. The degradation efficiency of photo-Fenton catalyst to methylene blue (MB) solution was treated as the response value. After the analysis of the response surface optimization, it was showed that the significance sequence of the selected 4 factors in terms of the MB degradation efficiency was arranged as following: dopamine concentration > liquid-solid ratio > P25 titanium dioxide quality > ferric chloride quality. The optimal process parameters of fiber-carbon catalyst were affirmed as following: the 1.7 mg/mL concentration of dopamine, the 1.2 g mass of ferric chloride, the 0.2 g mass of P25 titanium dioxide and the liquid-solid ratio of 170 mL/g. The experimentmeasured average MB degradation efficiency performed by the optimized catalyst was 99.3%, which was nearly similar to the model-predicted value of 98.9%. It showed that the prediction model and response surface model were accurate and reliable. The results from response surface optimization could provide a good reference to design bamboo-based Fenton-like catalyst with excellent catalytic performance.

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“…Kinetic data for supported systems was analyzed in terms of the Langmuir-Hinshelwood model for heterogeneous catalytic unimolecular reactions [29]. This model assumes an adsorption/desorption equilibrium of the dye and degradation by-products over the catalyst and, once the dye is adsorbed, a slow unimolecular degradation step.…”

Section: Photocatalytic Degradation Kineticsmentioning

confidence: 99%

Photocatalytic Behavior of Supported Copper Double Salt: The Role of Graphene Oxide

Shabestari

Baselga

Martín

2022

Journal of Chemistry

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The design of a photocatalyst that may work efficiently with sunlight is a fundamental concern to fight against environmental pollution and electrochemical hydrogen storage devices. In this work, it has been found that the green microwave-assisted decoration of graphene by copper double salt (DS) enhances visible sunlight photocatalysis efficiency. Nanohybrids of graphene oxide decorated with Cu(I) and Cu(II) oxides and copper hydroxy nitrate double salt were selected as photocatalysts for the degradation of rhodamine B in aqueous solution to study the effect of the graphene oxide support. The photodegradation process followed a pseudo–first-order kinetics for the bare catalysts, but the supported catalysts were best fitted to the Langmuir-Hinshelwood model. Supported systems were more efficient in terms of turnover and apparent rate constants. Diffuse reflectance spectroscopy with the use of Kubelka-Munk function allowed to measure bandgap energies. It was found that the absorption edge was reduced about 30% for the supported systems.

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Degradation of rhodamine B in water by ultrasound-assisted TiO2 photocatalysis

Cited by 164 publications

References 36 publications

Engineering Pollen‐Derived Microstructures to Reveal Material Morpho‐Performance Paradigm

Engineering Pollen‐Derived Microstructures to Reveal Material Morpho‐Performance Paradigm

Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

Photocatalytic Behavior of Supported Copper Double Salt: The Role of Graphene Oxide

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