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January 1, 2026RSC AdvancesOpen Access

Hydrothermal synthesis of nitrogen- and sulfur-co-doped carbon quantum dots from rice straw for fluorescent detection of Hg ²⁺ in aqueous media

Duc Cuong Nguyen Bao Long Hoang Van Duong Pham Hop Bao Tung Nguyen Tuan Anh Pham Thi Thao Vu

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Key Points

The research aims to develop a sustainable method for synthesizing carbon quantum dots to detect mercury ions in water.
Hydrothermal synthesis of nitrogen and sulfur co-doped carbon quantum dots from rice straw.
Fluorescent assays to evaluate selectivity and sensitivity towards Hg2+ in aqueous solutions.
The synthesized carbon quantum dots demonstrated high fluorescence in the presence of Hg2+.
The detection method showed high selectivity and sensitivity for mercury ions in water.

Implication

Hydrothermal synthesis produces carbon quantum dots for detecting Hg2+ in water, indicating a sustainable method for monitoring pollutants.

Abstract

Sustainable rice straw-derived N,S-co-doped carbon quantum dots enable highly selective and sensitive fluorescent detection of Hg 2+ in water.

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Cite This Study

Nguyen et al. (2026) studied this question.

synapsesocial.com/papers/699e912ef5123be5ed04e8bb https://doi.org/10.1039/d5ra09779g

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Correction: Hydrothermal synthesis of nitrogen- and sulfur-co-doped carbon quantum dots from rice straw for fluorescent detection of Hg <sup>2+</sup> in aqueous mediaOriginal Research · 2026 · 1 citations
2Green synthesis of nitrogen–sulfur co-doped carbon quantum dots from rice straw: Optical properties, antibacterial activity, and toxicity evaluation in cells and zebrafish embryosOriginal Research · 2026
3A novel approach to Hg<sup>2+</sup> determination in water samples using carbon dots based on paper and fluorescence digital image analysis2024 · 3 citations
4Boron, nitrogen, and sulfur co‐doped carbon dots as a fluorescence probe for label‐free analysis of Hg<sup>2</sup><sup>+</sup>2024 · 5 citations
5Eco-Friendly Self-Passivated Fluorescent Carbon Quantum Dots for Rapid Paper-Based Nanoscale Sensing of Mercury in Water MatricesOriginal Research · 2026 · 3 citations

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