Photocatalytic degradation of methyl orange by a diethylenetriamine modified chitosan/bentonite composite

Gao, Xiangpeng; Yin, Hui; Li, Mingyang; Xin, Lili; Zhang, Hao; Long, Hongming

doi:10.1039/d3re00220a

Cited by 6 publications

(3 citation statements)

References 75 publications

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“…In conclusion, TEM analysis highlights the significant influence of clay type on the interaction kinetics and overall transformation process. Cs/MMT exhibits a swifter and more uniform interaction with chitosan, while Cs/HET undergoes a slower but progressive interaction, ultimately achieving a stable nanocomposite structure [15,34,61]. The comparative analysis of EDX (energy-dispersive X-ray spectroscopy) results (Table 2 and Figure 7) confirms the observations made by electron microscopy.…”

Section: Tem Study Of the Cs/mmt (1:3) And Cs/het (1:3) Samplessupporting

confidence: 74%

Section: Xrd Analysismentioning

confidence: 76%

“…Cs/MMT undergoes a swifter structural reorganization due to its inherent reactivity, while Cs/HET exhibits a more gradual transformation. These findings emphasize the importance of clay type in dictating the final structure and properties of the synthesized nanocomposite [15,34,[59][60][61][62]. Determining crystallite size is a pivotal procedure in characterizing the crystalline structure of materials, particularly in materials science.…”

Section: Xrd Analysismentioning

confidence: 94%

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Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Albouchi,

Lahbib,

Mejri

et al. 2024

Solids

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This research investigates the influence of synthesis kinetics on the structural and photocatalytic properties of chitosan–clay nanocomposites (Cs/MMT) and chitosan–hectorite nanocomposites (Cs/HET), employing an optimized initial stoichiometry of 1:3. Utilizing a variety of analytical techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FTIR), the study explores the structural evolution of the nanocomposites and their photocatalytic performance using semiconductor catalysts TiO2 and ZnO. The findings emphasize the significant impact of reaction kinetics, particularly after 3 h of reaction time, on the structural features of the nanocomposites. Notably, Cs/MMT demonstrates greater crystalline stability compared to Cs/HET due to variations in octahedral cavity occupancy in the initial clays. FTIR and TEM analyses depict the progressive evolution of the nanocomposites during the reaction, shedding light on how reaction kinetics drive the formation of specific bonds within the nanocomposites. In terms of photocatalytic activity, this study provides insights into the complex dynamics of photocatalytic degradation, with a specific focus on the performance of TiO2 and ZnO under diverse experimental conditions. The superior efficacy of TiO2 as a catalyst, particularly when integrated with Cs/MMT nanocomposites, is unequivocally demonstrated, with degradation rates exceeding 80%. This preference stems from TiO2 consistently exhibiting higher degradation rates compared to ZnO, attributed to structural disparities between montmorillonite and hectorite, influencing catalyst–support interactions. The findings underscore the critical importance of selecting suitable catalyst and support matrix combinations for optimizing performance in specific applications.

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Section: Tem Study Of the Cs/mmt (1:3) And Cs/het (1:3) Samplessupporting

confidence: 74%

Section: Xrd Analysismentioning

confidence: 76%

Section: Xrd Analysismentioning

confidence: 94%

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Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Albouchi,

Lahbib,

Mejri

et al. 2024

Solids

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Synthesis and Characterization of Polymer Particles as Metal‐Free Catalysts for Electrooxidation and Methanolysis of Sodium Borohydride

Gokkus,

Kaya,

Yildiz

et al. 2024

ChemistrySelect

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In this study, trimethylolpropane triglycidyl ether/diethylenetriamine (TD) and glutaraldehyde/diethylenetriamine (GD) polymer particles are synthesized as catalysts for hydrogen production from NaBH4 methanolysis and NaBH4 electrooxidation. SEM, FT‐IR and TGA characterization methods are applied to determine the surface morphologies, chemical structures, thermal stability and decomposition of the synthesized polymer particles. The parameters affecting the hydrogen generation rate on NaBH4 methanolysis are investigated and optimum conditions are determined. Under optimum conditions, the hydrogen generation rates of TD and GD polymer particles are obtained as 34903.2 and 97998 mL/min.gcat, respectively. The activation energies of TD and GD polymer particles are also calculated as 16.86 and 18.14 kJ/mol, respectively. The catalytic activities of polymer particles as anode catalysts in NaBH4 electrooxidation are determined by CV, CA, EIS analyses. The specific activities of TD and GD polymer particles are acquired as 0.54 and 0.64 mA/cm2, respectively. These results indicate that the synthesized polymer particles are promising catalysts for electrooxidation and methanolysis of sodium borohydride.

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Preparation of versatile polymer particles and their application for elimination of bromophenol blue and phenol from aqueous environment

Gokkus,

Oter,

Amlani

et al. 2024

Desalination and Water Treatment

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Photocatalytic degradation of methyl orange by a diethylenetriamine modified chitosan/bentonite composite

Abstract: In this study, a novel organic composite photocatalyst (CCS/Bent-DETA) was synthesized by sol-gel method to degrade methyl orange (MO) under UV light irradiation. The structure, morphology and optical properties of...

Cited by 6 publications

References 75 publications

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Synthesis and Characterization of Polymer Particles as Metal‐Free Catalysts for Electrooxidation and Methanolysis of Sodium Borohydride

Preparation of versatile polymer particles and their application for elimination of bromophenol blue and phenol from aqueous environment

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