IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Beilstein Journal of Nanotechnology Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI:10.3762/bjnano.15.124
Akash Kumar, Ridhima Chadha, Abhishek Das, Nandita Maiti, Rayavarapu Raja Gopal
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引用次数: 0

摘要

ʟ-肉碱是一种二肽,具有显著的抗氧化、抗糖化、金属螯合和神经保护特性。尽管ʟ-肉碱具有多种生物学作用,但在纳米粒子合成中将其用作封端剂的研究仍显不足。本研究探讨了ʟ-肉碱在合成可调电浆银纳米粒子(ʟ-car-AgNPs)中的潜力。通过紫外可见光吸收光谱证实了ʟ-car-AgNPs 的形成,并根据合成条件的不同显示出单等离子峰和双等离子峰。利用 TEM、傅立叶变换红外光谱、拉曼光谱以及 EDX 和 XRD 进行的物理化学表征显示,ʟ-car-AgNPs 的聚集受控、成功封盖和结晶生长。ʟ-car-AgNPs具有良好的传感能力,对Cd2+的检测限为141.79 ppb (1.2 μM),对Pb2+的检测限为131.33 ppb (0.63 μM),对As3+的检测限为215.35 ppb (2.8 μM),对Cr3+的检测限为245.49 ppb (4.7 μM)。此外,这些纳米粒子在降解对硝基苯酚(P-NP)方面表现出催化活性,分别在 5 分钟和 10 分钟内完全降解了 0.25 毫摩尔和 1 毫摩尔的溶液。这项研究揭示了ʟ-car-AgNPs 在重金属离子检测和催化降解对硝基苯酚方面的潜力,表明其适用于环境监测和修复应用。要扩大其环境应用范围并了解其与各种污染物的相互作用机制,还需要进一步的优化和研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Facile synthesis of size-tunable L-carnosine-capped silver nanoparticles and their role in metal ion sensing and catalytic degradation of p-nitrophenol.

ʟ-Carnosine is a dipeptide with notable antioxidant, antiglycation, metal chelating, and neuroprotective properties. Despite its many biological roles, applying ʟ-carnosine as a capping agent in nanoparticle synthesis has remained underexplored. This study explores the potential of ʟ-carnosine in synthesizing tunable plasmonic silver nanoparticles (ʟ-car-AgNPs). The formation of ʟ-car-AgNPs was confirmed via UV-vis optical absorption spectroscopy, showing single and double plasmonic peaks, depending on the synthesis conditions. Physicochemical characterization using TEM, FTIR, and Raman spectroscopy, as well as EDX and XRD revealed controlled aggregation, successful capping, and crystalline growth of the ʟ-car-AgNPs. The ʟ-car-AgNPs exhibited promising sensing capabilities with limits of detection of 141.79 ppb (1.2 μM) for Cd2+, 131.33 ppb (0.63 μM) for Pb2+, 215.35 ppb (2.8 μM) for As3+, and 245.49 ppb (4.7 μM) for Cr3+. Additionally, these nanoparticles demonstrated catalytic activity regarding the degradation of p-nitrophenol (P-NP), achieving complete degradation of 0.25 and 1 mM solutions within 5 and 10 min, respectively. This study reveals the potential of ʟ-car-AgNPs for both heavy metal ion detection and catalytic degradation of P-NP, indicating their suitability for environmental monitoring and remediation applications. Further optimization and research are needed to expand their environmental applications and to understand their interaction mechanisms with various contaminants.

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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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