Photocatalytic Degradation of Malachite Green Dye by Using Microwave Synthesized ZnO and Sr Doped ZnO Nanoparticles: A Comparative Study

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2025-04-17 DOI:10.1007/s10562-025-05020-w

R. Dhanabal, B. Ramya, J. Yamini, P. Painthamizh Pavai, P. Gomathi Priya

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Abstract

In this work we have studied the effect of photocatalytic degradation of malachite green dye by using Zinc oxide nanoparticles and Strontium doped Zinc oxide nanoparticles. The nanoparticle has been synthesized by microwave assisted co-precipitation method (Piper nigrum seed extract). The crystallite size and formation of nanoparticles were confirmed by X-ray diffraction spectroscopy and Fourier transform infrared spectroscopy results. Ultra violet visible diffuse reflectance spectroscopy reveals the band gap of synthesized nanoparticles and the morphology of the nanoparticles have been examined by using scanning electron microscopy analysis. The photocatalytic degradation efficiency of both the nanoparticles has been evaluated by degradation of malachite green dye (synthetic). For the removal efficiency dye concentration, pH, catalyst concentration has been taken into account. From the results it has been found that ZnO–Sr nanocomposites exhibits higher removal efficiency of 90% than ZnO nanoparticles (64.3%) at initial dye concentration of 20 mg/L, catalyst dosage of 100 mg and at 6 pH. From this work it has been found that doping of Strontium into Zinc oxide nanoparticles increases the efficiency of ZnO.

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微波合成ZnO与Sr掺杂ZnO纳米粒子光催化降解孔雀石绿染料的比较研究

本文研究了氧化锌纳米粒子和光催化降解孔雀石绿染料的效果。采用微波辅助共沉淀法合成了胡椒籽提取物的纳米颗粒。通过x射线衍射光谱和傅里叶变换红外光谱结果证实了纳米颗粒的大小和形成。紫外可见漫反射光谱揭示了合成的纳米颗粒的带隙，并利用扫描电镜分析了纳米颗粒的形貌。通过对合成孔雀石绿染料的光催化降解，评价了两种纳米粒子的光催化降解效率。考察了染料浓度、pH、催化剂浓度对去除率的影响。结果表明，在初始染料浓度为20 mg/L、催化剂用量为100 mg、ph值为6时，ZnO - sr纳米复合材料的去除率比ZnO纳米颗粒（64.3%）高90%。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.