Diverse Technological Initiatives for E-Waste Management and Its Impact on Ecosystem

Das, S.; Gupta, Bishal; Sarkar, Abhijit

doi:10.1007/978-981-19-6541-8_3

Cited by 2 publications

(1 citation statement)

References 75 publications

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“…Additionally, the catalytic performance of metal oxides depends not only on their composition but also on their structure, phase, shape, size, particle size, and the particle agglomeration of the dispersed sample. Advancement in industrialization, leading to toxic by-products, has altered the environment by unleashing a distinct variety of toxins and emissions of hazardous gases into the atmosphere [1][2][3]. Therefore, conventionally implemented strategies such as immobilization, biological and chemical oxidation, and incineration have been largely employed to treat several types of organic and toxic industrial contaminants [4,5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Photocatalytic Activity and Electrochemical Properties of Hematite Nanoparticles

Sagadevan

Sivasankaran²,

Lett

et al. 2023

Symmetry

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The symmetric nano morphologies, asymmetric electronic structures, and as well as the heterojunctions of the developed photocatalytic systems perform a vital role in promoting light absorption, separation of electron and hole pairs and charge carrier transport to the surface when exposed to near-infrared (NIR) light. In this present work, we synthesized hematite (α-Fe2O3) nanoparticles (NPs) by a facile hydrothermal method and studied their structural, optical, and photocatalytic properties. Powder X-ray diffraction (XRD) confirmed the rhombohedral phase of the α-Fe2O3 NPs, and Fourier transform infrared spectroscopy (FT-IR) was used to investigate symmetric and asymmetric stretching vibrations of the functional groups on the surface of the catalysts. The optical bandgap energy was estimated to be 2.25 eV using UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) and scanning electron microscopy (SEM) images indicated sphere like morphology. The oxidation and reduction properties of α-Fe2O3 NPs were analyzed by cyclic voltammetry (CV). The α-Fe2O3 NPs were utilized for the degradation of methylene blue (MB) dye under natural sunlight. The experimental results demonstrate that the degradation efficiency was achieved at 33% in 2 h, and the pseudo-first-order rate constant was calculated to be 0.0033 min−1.

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