Sustainable Peanut Shell-Derived Carbon Dots for Fluorescent Sensing of Pb2+ Ions
- Title
- Sustainable Peanut Shell-Derived Carbon Dots for Fluorescent Sensing of Pb2+ Ions
- Creator
- Madhushree, R.; Kali, Sneha Ravi; Sunajadevi, Kalathiparambil Rajendra Pai; Pinheiro, Dephan
- Description
- Lead (Pb), a chemical element, is highly toxic even at low doses and can cause permanent harm with immediate life-threatening consequences upon short-term exposure. Its toxicity poses a significant risk, particularly to young children, leading to lifelong severe health issues. Detecting lead is crucial, and there is increasing interest in adopting eco-friendly approaches, such as utilizing carbon dots (CDs) derived from biomass. In our present study, we have synthesized CDs from peanut shells (PNS) through a straightforward pyrolysis process and employed various techniques to characterize these PNS-based CDs. Our findings reveal that these CDs emit fluorescence at 455 and 574nm when excited at 285nm, particularly in the presence of nanomolar Pb2+ ions. Notably, these PNS-derived CDs (PNS-CDs) demonstrate remarkable sensitivity and selectivity for detecting Pb2+ ions. A limit of detection (LOD) of 16.59nM was determined for the sensor, corresponding to a linear concentration range of 16.622.2nM. This study proposes a novel and simple one-pot pyrolysis method to synthesize CDs from PNS for the rapid testing of lead contamination in the environment, which holds great promise for sensor applications. 2025 Wiley-VCH GmbH.
- Source
- ChemistrySelect;Volume;10;Issue;44;Article No.;e03995;
- Date
- 01-01-2025
- Publisher
- John Wiley and Sons Inc
- Subject
- Carbon dots; Fluorescence; Lead; Peanut shells; Sensing
- Coverage
- Madhushree R., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India; Kali S.R., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India; Sunajadevi K.R.P., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India; Pinheiro D., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India
- Rights
- All Open Access; Bronze Open Access
- Relation
- ISSN: 23656549;
- Format
- online
- Language
- English
- Type
- Article
Collection
Citation
Madhushree, R.; Kali, Sneha Ravi; Sunajadevi, Kalathiparambil Rajendra Pai; Pinheiro, Dephan, “Sustainable Peanut Shell-Derived Carbon Dots for Fluorescent Sensing of Pb2+ Ions,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 21, 2026, https://archives.christuniversity.in/items/show/21819.