Rietveld refinement, Morphological, Optical and Photocatalytic Dye Degradation Studies of Pristine and Sr-Doped SnS2 Hexagonal Nanoplates

Sharma, Anjli; Makhija, Ashima; Dahiya, Sajjan; Ohlan, Anil; Punia, R.; Maan, A. S.

doi:10.1016/j.materresbull.2023.112464

Cited by 6 publications

(1 citation statement)

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“…In line with this hypothesis, the charge carrier density was increased, leading to the filling of the conduction band (CB) with electrons, as the dopant concentration increased. At the same time, Fermi level shifted above the minima of CB and hindrances the low energy electron elevation from VB to CB and resulting the wider band gap [43,44]. This energy gap directly favors the enhancement in photodegradation rate of organic pollutants, as this heterojunction allow the large amount of absorption of solar spectrum and corresponding large number of charge carrier takes part in degradation process and better photocatalytic activity [45].…”

Section: Morphological Studymentioning

confidence: 99%

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.

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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.

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Section: Morphological Studymentioning

confidence: 99%