The controlled synthesis and DFT investigation of novel (0D)–(3D) ZnS/SiO₂ heterostructures for photocatalytic applications

Abstract

A ZnS/SiO2 photocatalyst was synthesized with different molar ratios using a low-cost sol–gel wet chemical procedure exhibited superior performance in the photodegradation of organic dyes under UV irradiation.

RETRACTED: CdSe Quantum Dot Nanoparticles: Synthesis and Application in the Development of Molecularly Imprinted Polymer-Based Dual Optical Sensors

“…Over the past few years, the synthesis of group II–VI nanomaterials is considered a significant subject in materials science directions because of their remarkable size, tunable band gap, size- and shape-dependent properties, and bright photoluminescence. , The applications of these inorganic semiconductor nanomaterials have attracted attention in optical sensors, pharmaceutical areas, photovoltaics, solar cells, light-emitting diodes (LEDs), photocatalysts, and modern electronic devices such as optical amplifiers. , Cadmium selenide (CdSe) quantum dot (QD) nanoparticle, as one of the II–VI semiconducting nanomaterials, is a very promising luminescent probe, small-sized nanocrystal, and conventional n-type semiconductor. , Its direct band gap is recorded to be 1.74 eV at room temperature . These crystallite clusters of semiconductors are extensively synthesized due to the great crystallinity and unique luminescence properties .…”

Fabrication of a zinc oxide/alginate (ZnO/Alg) bionanocomposite for enhanced dye degradation and its optimization study

“…The photocatalytic degradation efficiencies of methylene blue and eosin were found to be approximately 97% aer approximately 120 min of irradiation treatment over the ZnS/SiO 2 (15%) photocatalyst. 37 The degradation of MB and malachite green (MG) dyes using zinc oxide/polyaniline (ZnO/PANI) nanocomposite in aqueous medium under natural sunlight and UV light irradiation was investigated by Eskizeybek et al and degrades both dye solutions (MB or MG) with 99% efficiency aer 5 hours of irradiation under natural sunlight. 38 Chaker et al modeled and optimized the degradation of MO dye by cerium-doped mesoporous ZnO by using RSM and optimized the three independent variables viz., pH-solution, pollutant concentration, and catalyst dosage.…”

A type II heterojunction α-Fe2O3/g-C3N4 for the heterogeneous photo-Fenton degradation of phenol

“…Thus, constructing a composite with a suitable band energy gap is a mainstream approach to widen the light absorption region and reduce the charge recombination. [16][17][18][19][20] Graphitic carbon nitride (g-C 3 N 4 ), as a two-dimensional layered semiconductor, has drawn particular attention in photocatalysis due to its element abundance, facile preparation, great visible light activity, high thermal and outstanding chemical stabilities, and excellent electronic structure. 21 Recently, the composite photocatalysts combining a-Fe 2 O 3 and g-C 3 N 4 have been successfully fabricated and showed great performance in water splitting, 22 carbon dioxide reduction, 23 photochemical reaction, 24 and heavy metal ion reduction.…”