G. Anandhakumari, V. Muthulakshmi, B. Valarmathi, V. Vasanthi, N. Sivanantham, S. Sathesh, K. Thirunavukkarasu, P. Jayabal
{"title":"光催化降解孔雀石绿染料的SrO-CuO纳米复合材料的优化合成与表征","authors":"G. Anandhakumari, V. Muthulakshmi, B. Valarmathi, V. Vasanthi, N. Sivanantham, S. Sathesh, K. Thirunavukkarasu, P. Jayabal","doi":"10.1007/s10854-025-15848-y","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, strontium oxide nanoparticles (SrO NPs), copper oxide nanoparticles (CuO NPs) and strontium oxide—copper oxide nanocomposites (SC NCs) were synthesized via a co-precipitation method and characterized for their structural, morphological, optical, and photocatalytic properties. The SC NCs was prepared by varying the concentration of CuO precursor followed by annealing at 800 °C. X-ray diffraction (XRD) analysis confirmed the cubic structure of SrO and the monoclinic phase of CuO. Field Emission Scanning Electron Microscopy (FE-SEM) revealed a variety of morphologies: spherical, cubic, random, and rod-like structures for SrO; agglomerated flower petal-like structures for CuO; and a combination of random and rod-like morphologies for SC 0.6 M NC. Energy-Dispersive X-ray Spectroscopy (EDS) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the elemental composition and chemical bonding in the nanocomposites. The formation of Sr–Cu–O nanocomposites (SC NCs) was confirmed by X-ray Photoelectron Spectroscopy (XPS), which provides insights into the elemental composition and oxidation states of the constituent elements. Optical characterization using UV–Vis spectroscopy and Tauc's plot revealed an increase in the band gap of SC NCs with higher CuO content, ranging from 2.33 to 3.08 eV. The photocatalytic efficiency for the degradation of Malachite Green (MG) dye under direct sunlight showed that SC-0.6 NC achieved complete dye degradation within 60 min, outperforming pure SrO and CuO NPs. Kinetic studies indicated that SC-0.6 NC followed pseudo-first-order kinetics with a high correlation coefficient (<i>R</i><sup>2</sup> = 0.99876). Radical scavenging experiments identified holes as key contributors to photocatalytic activity. The results demonstrate that the SrO-CuO NCs, especially SC-0.6, exhibit enhanced photocatalytic performance, highlighting their potential for environmental cleanup applications using solar energy.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 27","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimized synthesis and characterization of SrO-CuO nanocomposites for superior photocatalytic degradation of malachite green dye under direct sun exposure\",\"authors\":\"G. Anandhakumari, V. Muthulakshmi, B. Valarmathi, V. Vasanthi, N. Sivanantham, S. Sathesh, K. Thirunavukkarasu, P. Jayabal\",\"doi\":\"10.1007/s10854-025-15848-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, strontium oxide nanoparticles (SrO NPs), copper oxide nanoparticles (CuO NPs) and strontium oxide—copper oxide nanocomposites (SC NCs) were synthesized via a co-precipitation method and characterized for their structural, morphological, optical, and photocatalytic properties. The SC NCs was prepared by varying the concentration of CuO precursor followed by annealing at 800 °C. X-ray diffraction (XRD) analysis confirmed the cubic structure of SrO and the monoclinic phase of CuO. Field Emission Scanning Electron Microscopy (FE-SEM) revealed a variety of morphologies: spherical, cubic, random, and rod-like structures for SrO; agglomerated flower petal-like structures for CuO; and a combination of random and rod-like morphologies for SC 0.6 M NC. Energy-Dispersive X-ray Spectroscopy (EDS) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the elemental composition and chemical bonding in the nanocomposites. The formation of Sr–Cu–O nanocomposites (SC NCs) was confirmed by X-ray Photoelectron Spectroscopy (XPS), which provides insights into the elemental composition and oxidation states of the constituent elements. Optical characterization using UV–Vis spectroscopy and Tauc's plot revealed an increase in the band gap of SC NCs with higher CuO content, ranging from 2.33 to 3.08 eV. The photocatalytic efficiency for the degradation of Malachite Green (MG) dye under direct sunlight showed that SC-0.6 NC achieved complete dye degradation within 60 min, outperforming pure SrO and CuO NPs. Kinetic studies indicated that SC-0.6 NC followed pseudo-first-order kinetics with a high correlation coefficient (<i>R</i><sup>2</sup> = 0.99876). Radical scavenging experiments identified holes as key contributors to photocatalytic activity. The results demonstrate that the SrO-CuO NCs, especially SC-0.6, exhibit enhanced photocatalytic performance, highlighting their potential for environmental cleanup applications using solar energy.</p></div>\",\"PeriodicalId\":646,\"journal\":{\"name\":\"Journal of Materials Science: Materials in Electronics\",\"volume\":\"36 27\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-09-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science: Materials in Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10854-025-15848-y\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-025-15848-y","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Optimized synthesis and characterization of SrO-CuO nanocomposites for superior photocatalytic degradation of malachite green dye under direct sun exposure
In this study, strontium oxide nanoparticles (SrO NPs), copper oxide nanoparticles (CuO NPs) and strontium oxide—copper oxide nanocomposites (SC NCs) were synthesized via a co-precipitation method and characterized for their structural, morphological, optical, and photocatalytic properties. The SC NCs was prepared by varying the concentration of CuO precursor followed by annealing at 800 °C. X-ray diffraction (XRD) analysis confirmed the cubic structure of SrO and the monoclinic phase of CuO. Field Emission Scanning Electron Microscopy (FE-SEM) revealed a variety of morphologies: spherical, cubic, random, and rod-like structures for SrO; agglomerated flower petal-like structures for CuO; and a combination of random and rod-like morphologies for SC 0.6 M NC. Energy-Dispersive X-ray Spectroscopy (EDS) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the elemental composition and chemical bonding in the nanocomposites. The formation of Sr–Cu–O nanocomposites (SC NCs) was confirmed by X-ray Photoelectron Spectroscopy (XPS), which provides insights into the elemental composition and oxidation states of the constituent elements. Optical characterization using UV–Vis spectroscopy and Tauc's plot revealed an increase in the band gap of SC NCs with higher CuO content, ranging from 2.33 to 3.08 eV. The photocatalytic efficiency for the degradation of Malachite Green (MG) dye under direct sunlight showed that SC-0.6 NC achieved complete dye degradation within 60 min, outperforming pure SrO and CuO NPs. Kinetic studies indicated that SC-0.6 NC followed pseudo-first-order kinetics with a high correlation coefficient (R2 = 0.99876). Radical scavenging experiments identified holes as key contributors to photocatalytic activity. The results demonstrate that the SrO-CuO NCs, especially SC-0.6, exhibit enhanced photocatalytic performance, highlighting their potential for environmental cleanup applications using solar energy.
期刊介绍：
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.
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