A ratiometric fluorescence sensor based on gold silver nanoclusters and tungsten disulfide quantum dots with simple fabrication for the detection of copper ions in river water

• DOI: 10.1039/d3ay00378g
• Publication Date: 2023-04-25T23:22:03Z
• Authors: Zhiya Wang; Rong Liu; Zhifang Fu; Xin Yi; Yongjun Hu; Changhui Liu; Dong Pan; Zhaoyang Wu
• Keywords: Nanoclusters; Tungsten disulfide

Copper plays a key role in the human body; meanwhile, excess Cu2+ ions can result various diseases. Nanoclusters (NCs) are often used to measure ions, but there two difficulties. On one hand, single probe of NCs is easily affected by environmental factors. other it difficult mask interference Pb2+ and Cd2+ process detecting ions. As new type quantum dots (QDs), tungsten disulfide (WS2-QDs) have some advantages simple synthesis stable luminescence properties. Stable WS2-QDs with blue fluorescence as reference probe, while gold silver nanoclusters (AuAgNCs) red response probe. A ratiometric fluorescent sensor was constructed mixing styles probes, which abbreviated NCs/QDs. This nano-sensor be detect concentration QDs does not change significantly, quenched The determined low 0.12 μM linear range from 0.3 3 μM. common caused eliminated phosphate buffer solution (PBS). river water satisfactory results.