Enhancing the effectiveness of basil seed-TiO2/rGO nanocomposites for multifunctional dye removal in wastewater

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2025-07-28 DOI:10.1007/s13762-025-06637-5

S. S. Alias, Z. Harun, N. A. Sharkawi, J. Matmin

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引用次数: 0

Abstract

Clean water source is contaminated by industrial wastewater effluent which directly discharge into water stream. Combination of adsorption-photocatalytic is one of the preferable techniques for treating methylene blue (MB) dye wastewater. In this study, hydrothermal method was utilised in order to synthesis titanium oxide (TiO₂) nanoparticles. The synthesis of rGO was conducted by Hummer’s method by using lemon extract. Both of synthesised TiO₂ and rGO were characterised by FESEM, EDX, HRTEM and XRD. The TiO₂/rGO nanocomposite with different weight of rGO was immobilised on green super adsorbent basil seed via facile physical adhesion method. Sample basil-TiO₂/rGO exhibit better degradation of MB with > 90% within 180 min. The B-T-0.3rGO nanocomposite showed the highest photocatalytic activities and uptake capacity with the concentration of 139.36 mg g⁻¹ better than the TiO₂ (49 mg g⁻¹) and basil seed (37 mg g⁻¹) alone. The B-T-0.3rGO nanocomposite showed strong antibacterial activity (6.02 mm² inhibition zone) and, when reused as a fertilizer, boosted mung bean plant growth to 17.47 cm in height after eight days. This research works can be a novel approach by using green, eco-friendly and reusable materials in photocatalytic degradation, antibacterial activities and agriculture by minimizing waste generations.

Graphical abstract

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罗勒籽- tio2 /氧化石墨烯纳米复合材料对废水中染料的多功能去除效果研究

清洁水源是被工业废水直接排放到水体中的污染水源。吸附-光催化相结合是处理亚甲基蓝染料废水的较好技术之一。本研究采用水热法制备了氧化钛纳米颗粒。以柠檬提取物为原料，采用Hummer法合成还原氧化石墨烯。通过FESEM、EDX、HRTEM和XRD对合成的TiO2和rGO进行了表征。采用简单物理粘附法将不同重量的氧化石墨烯（rGO）与TiO2/rGO纳米复合材料固定在绿色超吸附剂罗勒种子上。罗勒- tio2 /rGO样品对MB的降解效果较好，在180 min内达到90%。B-T-0.3rGO纳米复合材料的光催化活性和吸收能力最高，浓度为139.36 mg g−1，优于单独的TiO2 （49 mg g−1）和罗勒种子（37 mg g−1）。B-T-0.3rGO纳米复合材料具有较强的抗菌活性（抑制区为6.02 mm2），当作为肥料重复使用时，绿豆植株在8天后的生长高度达到17.47 cm。该研究为光催化降解、抗菌活性和农业生产中使用绿色、环保和可重复使用的材料提供了一种新的途径，减少了废物的产生。图形抽象

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.