Green Synthesis of Reduced Graphene Oxide Using Neem (Azadirachta indica) Leaf Extract for Efficient Removal of Heavy Metals and Dyes from Industrial Wastewater

IF 1 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Russian Journal of General Chemistry Pub Date : 2026-09-03 DOI:10.1134/S1070363226601134

Deepak Kumar Rai, Shivansh Tripathi, Shiva Kant Ojha, Kumari Pooja, Mridula Tripathi

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Abstract

Reduced graphene oxide (rGO) was synthesized via an eco-friendly green route using Azadirachta indica (neem) leaf extract as a natural reducing and stabilizing agent. Graphene oxide (GO) was first prepared using a modified Hummers’ method and subsequently reduced through the action of phytochemicals present in the neem extract, thereby eliminating the need for hazardous chemical reductants. Structural and morphological characterization using XRD, FTIR, Raman spectroscopy, and SEM confirmed the effective reduction of GO, partial restoration of the sp²-carbon network, and the formation of wrinkled, porous rGO structures suitable for adsorption applications. The adsorption performance of the green-synthesized rGO was evaluated using real industrial wastewater collected from the Kanpur industrial region, containing hexavalent chromium (Cr⁶⁺), lead (Pb²⁺), cadmium (Cd²⁺), and textile dyes.

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印楝叶提取物绿色合成还原性氧化石墨烯高效去除工业废水中的重金属和染料

以印楝叶提取物为天然还原剂和稳定剂，通过绿色环保途径合成了还原性氧化石墨烯（rGO）。氧化石墨烯（GO）首先使用改进的Hummers方法制备，随后通过楝树提取物中存在的植物化学物质的作用进行还原，从而消除了对危险化学还原剂的需求。利用XRD、FTIR、拉曼光谱和SEM对其进行了结构和形态表征，证实了氧化石墨烯的有效还原，sp2-碳网络的部分恢复，并形成了适合吸附应用的皱褶多孔氧化石墨烯结构。以坎普尔工业区的含六价铬（Cr6+）、铅（Pb2+）、镉（Cd2+）和纺织染料的工业废水为研究对象，考察了绿色合成氧化石墨烯的吸附性能。

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来源期刊

Russian Journal of General Chemistry 化学-化学综合

CiteScore

1.40

自引率

22.20%

发文量

252

审稿时长

2-4 weeks

期刊介绍： Russian Journal of General Chemistry is a journal that covers many problems that are of general interest to the whole community of chemists. The journal is the successor to Russia’s first chemical journal, Zhurnal Russkogo Khimicheskogo Obshchestva (Journal of the Russian Chemical Society ) founded in 1869 to cover all aspects of chemistry. Now the journal is focused on the interdisciplinary areas of chemistry (organometallics, organometalloids, organoinorganic complexes, mechanochemistry, nanochemistry, etc.), new achievements and long-term results in the field. The journal publishes reviews, current scientific papers, letters to the editor, and discussion papers.