Optimization, imaging and LHE analysis of magnesium oxide nanoparticles synthesized with carambola extract as natural dye sensitizer

IF 3.2 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
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Abstract

This work explores the enhancement of dye-sensitized solar cells (DSSCs) by using magnesium oxide nanoparticles (MgO NPs) that have been green-synthesized, with carambola extract acting as a natural dye sensitizer. Green synthesis minimizes the negative effects of traditional synthesis methods on the environment by providing a sustainable and ecologically friendly way to produce MgO NPs. To increase their effectiveness in DSSC applications, the synthesized nanoparticles underwent optimization. The morphology and size distribution of MgO NPs were characterized by scanning electron microscopy (SEM), which revealed spherical forms with a consistent size distribution. The crystalline nature of the MgO NPs was verified by X-ray diffraction (XRD), which revealed distinctive peaks that correspond to the bulk MgO crystal planes. A band gap of 3.5 eV, appropriate for UV region absorption, was found using UV–visible spectroscopy. FT-IR (Fourier-transform infrared) spectroscopy revealed information about their molecular compositions. Positive electronic characteristics, such as a negative total energy change (ΔE_T) and a high electrophilicity index (ω), which indicates effective charge transfer, were found through computational analysis. The light harvesting efficiency (LHE) value of 0.00459 signifies optimal light absorption capability by the dye molecule. The outcomes show that MgO NPs that have undergone green synthesis have the potential to be efficient and stable sensitizers for DSSCs. In addition to highlighting the significance of green synthesis techniques in nanomaterial research for renewable energy applications, this work advances the development of efficient and sustainable solar energy systems.

Abstract Image

用胡罗卜提取物合成的氧化镁纳米粒子作为天然染料敏化剂的优化、成像和 LHE 分析
这项研究探讨了如何利用绿色合成的氧化镁纳米粒子(MgO NPs)增强染料敏化太阳能电池(DSSC)的性能,苌楚提取物是一种天然染料敏化剂。绿色合成提供了一种可持续的生态友好型氧化镁纳米粒子生产方法,从而最大限度地减少了传统合成方法对环境的负面影响。为了提高其在 DSSC 应用中的有效性,对合成的纳米粒子进行了优化。通过扫描电子显微镜(SEM)对氧化镁 NPs 的形态和尺寸分布进行了表征,结果显示其呈球形,尺寸分布一致。氧化镁 NPs 的结晶性质通过 X 射线衍射 (XRD) 得到验证,XRD 显示了与块状氧化镁晶面相对应的独特峰值。利用紫外可见光谱发现了 3.5 eV 的带隙,适合紫外区吸收。傅立叶变换红外光谱(FT-IR)显示了它们的分子组成信息。通过计算分析发现了积极的电子特性,如负总能量变化(ΔE_T)和高亲电指数(ω),这表明电荷转移有效。光收集效率(LHE)值为 0.00459,表明染料分子具有最佳的光吸收能力。研究结果表明,经过绿色合成的氧化镁纳米粒子有望成为高效、稳定的 DSSC 感光剂。除了强调绿色合成技术在可再生能源应用纳米材料研究中的重要意义外,这项工作还推动了高效和可持续太阳能系统的发展。
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来源期刊
CiteScore
3.50
自引率
7.70%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.
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