用于光催化降解亚甲基蓝的生物质源碳量子点的绿色合成。

IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Beilstein Journal of Nanotechnology Pub Date : 2024-06-25 eCollection Date: 2024-01-01 DOI:10.3762/bjnano.15.63
Dalia Chávez-García, Mario Guzman, Viridiana Sanchez, Rubén D Cadena-Nava
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引用次数: 0

摘要

纺织等行业排放的合成染料严重影响了水污染,对人类健康构成了持续的全球性威胁。在这些染料中,亚甲基蓝在纺织行业尤为普遍,加剧了这一问题。本研究介绍了一种创新方法,即利用从葡萄渣和西瓜皮中提取的生物质碳量子点(CQDs)合成纳米材料,从而减轻水污染。利用水热法,在 80 至 160 °C 的温度下,经过 1 至 24 小时,成功合成了碳量子点。利用紫外-可见光谱、傅立叶变换红外光谱、动态光散射、拉曼光谱和发光光谱对 CQDs 进行了全面表征,证实了它们的高质量。在日光和白炽灯照射下,对 CQDs 降解亚甲基蓝的光催化活性进行了评估,测量时间为 2 小时,每隔 20 分钟测量一次。尺寸为 1-10 纳米的 CQDs 表现出显著的光学特性,包括上转换和下转换发光。研究结果表明,亚甲基蓝在阳光下能有效地进行光催化降解,这凸显了可规模化生产这些具有成本效益的催化纳米材料用于合成染料降解的潜力。
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Green synthesis of biomass-derived carbon quantum dots for photocatalytic degradation of methylene blue.

Water pollution, significantly influenced by the discharge of synthetic dyes from industries, such as textiles, poses a persistent global threat to human health. Among these dyes, methylene blue, particularly prevalent in the textile sector, exacerbates this issue. This study introduces an innovative approach to mitigate water pollution through the synthesis of nanomaterials using biomass-derived carbon quantum dots (CQDs) from grape pomace and watermelon peel. Utilizing the hydrothermal method at temperatures between 80 and 160 °C over periods ranging from 1 to 24 h, CQDs were successfully synthesized. A comprehensive characterization of the CQDs was performed using UV-visible spectroscopy, Fourier-transform infrared spectroscopy, dynamic light scattering, Raman spectroscopy, and luminescence spectroscopy, confirming their high quality. The photocatalytic activity of the CQDs in degrading methylene blue was evaluated under both sunlight and incandescent light irradiation, with measurements taken at 20 min intervals over a 2 h period. The CQDs, with sizes ranging from 1-10 nm, demonstrated notable optical properties, including upconversion and down-conversion luminescence. The results revealed effective photocatalytic degradation of methylene blue under sunlight, highlighting the potential for scalable production of these cost-effective catalytic nanomaterials for synthetic dye degradation.

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来源期刊
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.70
自引率
3.20%
发文量
109
审稿时长
2 months
期刊介绍: The Beilstein Journal of Nanotechnology is an international, peer-reviewed, Open Access journal. It provides a unique platform for rapid publication without any charges (free for author and reader) – Platinum Open Access. The content is freely accessible 365 days a year to any user worldwide. Articles are available online immediately upon publication and are publicly archived in all major repositories. In addition, it provides a platform for publishing thematic issues (theme-based collections of articles) on topical issues in nanoscience and nanotechnology. The journal is published and completely funded by the Beilstein-Institut, a non-profit foundation located in Frankfurt am Main, Germany. The editor-in-chief is Professor Thomas Schimmel – Karlsruhe Institute of Technology. He is supported by more than 20 associate editors who are responsible for a particular subject area within the scope of the journal.
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