Adsorption Study and Degradation Pathway of Cerium-Doped ZnO Nanoflowers for Methylene Blue and p-Nitrophenol

Dhanda, Ekta; Nain, Aditi; Dahiya, Sanjay

doi:10.1007/s11270-023-06517-z

Cited by 10 publications

(6 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The external morphology of prepared samples with their elemental composition was observed by FE-SEM equipped with EDAX. Figures 3(a), (b) represent the morphology of bare PANI, and PANI@Ce-doped ZnO nanocomposite shows the PANI has a barbed structure with sharp thorns possess high surface area with large adsorption of organic pollutants due to availability of large effective active site [31] , morphology of bare Cedoped ZnO already discussed in our previous publication [32]. Figures 3(c), (d) represent the corresponding EDAX with elemental composition.…”

Section: Morphological Studymentioning

confidence: 78%

“…Ce-doped ZnO with various concentration of dopant were prepared using the solvothermal technique [32]. Ultrasonic-assisted wet impregnation methodology was applied for the synthesis of metal-organic framework of PANI@Ce-doped ZnO nanocomposite.…”

Section: Synthesis Of Pani@ce-doped Znomentioning

confidence: 99%

“…The average crystallite size (D) of prepared samples was determined using the Debye-Scherrer formula [37]for most prominent intensity peak, represented by equation (2). Where, all parameters have explained in previous paper [32].…”

Section: Photocatalytic Assessmentmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

Dhanda,

Nain,

Dahiya

2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

To address the significant issue of wastewater treatment, this research focused on synthesizing PANI@Ce-doped ZnO (PCZ), a ternary heterojunction with varying dopant concentrations. This heterojunction was prepared using an ultrasonic-assisted wet impregnation technique and underwent comprehensive analysis through several techniques, including XRD, UV-DRS, Photoluminescence, FE-SEM, EDAX, FTIR, and Impedance Analyzer. The synergy between the organic and inorganic frameworks resulted in an additive effect on the photocatalyst's degradation efficiency. This was achieved by enhancing its light-absorption properties and tuning the band gap energy. In the photocatalytic degradation process, reactive oxygen species (ROSs), including O2, OH, and h+, played a crucial role in breaking down MB (Methylene Blue) using the PANI@Ce-doped ZnO nanocomposites. Comparing PANI@Ce-doped ZnO with a 1% Cerium concentration (PCZ1) to its counterparts with different dopant concentrations, PCZ1 exhibited significantly elevated photocatalytic activity. This enhancement can be attributed to the improved transfer and separation of photogenerated charge carriers, which resulted from the effective formation of a heterojunction between the two components with a large trapping site.

show abstract

Section: Morphological Studymentioning

confidence: 78%

Section: Synthesis Of Pani@ce-doped Znomentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

Dhanda,

Nain,

Dahiya

2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Where, all parameters such as k (Scherrer constant), λ (1.5406 Å), θ (Bragg angle), β (FWHM) have their usual meaning as already mentioned in previous publication [21]. The analysis of table 2 indicates a significant reduction in crystallite size observed in the prepared nanocomposites following their formation.…”

Section: Resultsmentioning

confidence: 94%

A highly effective PANI@(Ce-Er) dual doped ZnO (PCEZ) nanocomposite as UV-light driven photocatalyst for degradation of MB dye: synthesis and characterization

Dhanda,

Nain,

Dahiya

2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Utilizing ecologically friendly methods to address wastewater concerns is paramount. In this study, we developed novel PANI@(Ce-Er) dual-doped ZnO (PCEZ) nanocomposites using a wet impregnation approach assisted by ultrasound. These composites were thoroughly characterized using XRD, FESEM, EDX, UV-DRS, PL, and Impedance Analyzer techniques to assess their structural, optical, and electrical properties. Structural characterization was conducted to analyze the crystalline behavior and chemical composition of the synthesized samples. UV-DRS and PL spectroscopy were utilized to analyze their optical properties. Compared to PANI alone, the PCEZ heterojunction demonstrated enhanced photocatalytic stability and efficiency. Notably, in neutral media, the PCEZ heterojunction exhibited a significant photodegradation efficiency against methylene blue (MB), achieving approximately to 94.14% degradation. Morphology analysis of the synthesized samples and elemental composition was effectively performed using SEM images and EDX data. The UV-DRS investigation aimed to confirm the active contacts of dopant metals with polyaniline backbone chains and assess the energy band gap, which defines the absorption behavior of the photocatalyst. Kinetic studies of methylene blue degradation were characterized using the Pseudo First-Order relation, with the best adjusted R2 value of 0.9947 observed for 50% w/w (PANI@(Ce-Er)-ZnO). The produced PANI@(Ce-Er) co-doped ZnO nanocomposites show promise as effective photocatalysts for the elimination of methylene blue in aqueous environments.

show abstract

“…This negative potential ensured a decrease in the agglomeration of the prepared nanoparticles and better dispersion due to the electrostatic repulsion existing between each nanoparticle. 41 FL-NP Tb 3+ /ZnO as a modier and ds-DNA had opposite surface charges, which supported their electrostatic attraction and allowed their closer contact, which was benecial for electron transmission and ultimately the determination of pemetrexed. Hence, the optimized Tb concentration of 0.1 g was chosen to fabricate the FL-NP Tb 3+ /ZnO for further study.…”

Section: Morphological and Structural Investigationsmentioning

confidence: 96%

A nanoscale electrochemical guanine DNA-biosensor based on a flower-like nanocomposite of Tb-doped ZnO for the sensitive determination of pemetrexed

Abbasi,

Jahani,

Biroudian

et al. 2023

RSC Adv.

View full text Add to dashboard Cite

show abstract

Adsorption Study and Degradation Pathway of Cerium-Doped ZnO Nanoflowers for Methylene Blue and p-Nitrophenol

Cited by 10 publications

References 53 publications

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

A highly effective PANI@(Ce-Er) dual doped ZnO (PCEZ) nanocomposite as UV-light driven photocatalyst for degradation of MB dye: synthesis and characterization

A nanoscale electrochemical guanine DNA-biosensor based on a flower-like nanocomposite of Tb-doped ZnO for the sensitive determination of pemetrexed

Contact Info

Product

Resources

About