Photocatalytic performance of starch-supported cobalt-doped WO3 nanoparticles for sunlight driven catalytic removal of Rhodamine- B and crystal violet dye

IF 2.4 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER Solid State Communications Pub Date : 2025-03-01 Epub Date: 2024-12-19 DOI:10.1016/j.ssc.2024.115808

Manjula Tiwari , G.C. Joshi

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Abstract

In this work, Cobalt-doped WO₃ (Co-doped WO₃) samples were prepared by co-precipitation method with starch assistance by adjusting the concentration of dopant. The optical, chemical, structural, and photocatalytic activity of prepared samples were analyzed with different dopant concentrations. X-ray diffraction (XRD) technique was utilized to study the structural behavior of synthesized samples. The morphology of the samples was revealed by FESEM images. Raman and FTIR spectral analysis further confirmed the structural aspects. With an increase in dopant concentration, it has been found that bandgap energy falls up to 2.62 eV while Urbach energy rises to 378 meV for 10 wt% Co-WO₃. The dye degradation using photocatalysis with the help of prepared samples has been assessed in the presence of sunlight with H₂O₂. The maximum photocatalytic activity was discovered for 10 wt% Co-WO₃ which degraded almost 98 % of RhB in 120 min and 96 % of CV in 105 min. The enhanced photocatalytic activity of 10 wt% Co-WO₃ NPs demonstrates its potential use in the treatment of wastewater.

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淀粉负载钴掺杂WO3纳米颗粒光催化去除罗丹明- B和结晶紫染料的性能研究

本文通过调整掺杂剂的浓度，采用淀粉辅助共沉淀法制备钴掺杂WO3 （co掺杂WO3）样品。分析了不同掺杂浓度下制备样品的光学、化学、结构和光催化活性。利用x射线衍射（XRD）技术对合成样品的结构行为进行了研究。FESEM图像显示了样品的形貌。拉曼和FTIR光谱分析进一步证实了结构方面。当Co-WO3浓度为10 wt%时，随着掺杂浓度的增加，带隙能下降到2.62 eV，而Urbach能上升到378 meV。在阳光和H2O2的作用下，对制备的样品进行了光催化降解染料的研究。10 wt% Co-WO3的光催化活性最高，可在120 min内降解98%的RhB，在105 min内降解96%的CV。10 wt% Co-WO3 NPs的光催化活性增强表明其在废水处理中的潜在应用。

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.