Sodium lauryl sulphate-mediated manganese doping to enhance photocatalytic performance of cadmium sulphide-manganese composite

IF 1.7 4区材料科学 Q3 CRYSTALLOGRAPHY

Journal of Crystal Growth Pub Date : 2025-02-26 DOI:10.1016/j.jcrysgro.2025.128125

Santhoshbalaji Muthuvijayan , T. Theivasanthi , Rajesh Kumar Manavalan , Selvakumar Balasubramanian , Subash C.B. Gopinath

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Abstract

This research investigates the effect of manganese doping concentration in cadmium sulphide (CdS) nanoparticles synthesized using sodium lauryl sulfate (SLS) surfactant to improve photocatalytic activity. We systematically controlled the manganese precursor concentration at 0.004 g, 0.0099 g, 0.0148 g, 0.0198 g, and 0.0247 g to achieve optimal doping efficiency and modulate the structural transformation of CdS-Mn nanocomposites. It was observed that the bandgap energy varied between 2.16 eV and 2.27 eV. Forward scattering of the X-rays was measured for the crystal at an incident photon energy of 2.27 eV, depending on Mn concentration, using UV–Vis absorption spectra. XRD analysis of CdS confirmed its wurtzite form with a peak shift at 2θ ≈ 32°, attributed to lattice contraction upon Mn doping. Transmission electron microscopy analysis provided a particle size estimate of about 7–8 nm. The reduction of methylene blue through photocatalytic activity under UV light showed that the highest degradation efficiency was achieved with Mn doping at 0.0148 g. The presence of SLS improved nanoparticle dispersion, preventing particle agglomeration and requiring stabilization, which is essential for high photocatalytic activity. The findings of this study are valuable for understanding the interaction process between Mn-doped CdS nanoparticles and SLS, as well as the synergistic effects that effectively enhance photocatalytic performance.

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来源期刊

Journal of Crystal Growth 化学-晶体学

CiteScore

3.60

自引率

11.10%

发文量

373

审稿时长

65 days

期刊介绍： The journal offers a common reference and publication source for workers engaged in research on the experimental and theoretical aspects of crystal growth and its applications, e.g. in devices. Experimental and theoretical contributions are published in the following fields: theory of nucleation and growth, molecular kinetics and transport phenomena, crystallization in viscous media such as polymers and glasses; crystal growth of metals, minerals, semiconductors, superconductors, magnetics, inorganic, organic and biological substances in bulk or as thin films; molecular beam epitaxy, chemical vapor deposition, growth of III-V and II-VI and other semiconductors; characterization of single crystals by physical and chemical methods; apparatus, instrumentation and techniques for crystal growth, and purification methods; multilayer heterostructures and their characterisation with an emphasis on crystal growth and epitaxial aspects of electronic materials. A special feature of the journal is the periodic inclusion of proceedings of symposia and conferences on relevant aspects of crystal growth.