A CsPb 0.95 Ni 0.05 Br 3 NCs-based fluorescence sensor for rapidly and accurately evaluating trace water in edible oils along with the structure destruction and dissolution
文献类型： 外文期刊
作者： Ye, Qin 1 ; Zhu, Penghao 2 ; Meng, Xianghe 2 ; Li, Jie 3 ; Lu, Yuanchao 2 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou 310014, Peoples R China
2.Zhejiang Univ Technol, Coll Food Sci & Technol, Hangzhou 310014, Peoples R China
3.Zhejiang A&F Univ, Coll Chem & Mat Engn, Hangzhou 311300, Peoples R China
关键词： Water content; Edible oils; Fluorescence sensors; Structure destruction and dissolution; CsPb0,95Ni0,05Br3 NCs
期刊名称：FOOD CHEMISTRY-X （ 影响因子：8.2； 五年影响因子：8.2 ）
ISSN： 2590-1575
年卷期： 2025 年 25 卷
页码：
收录情况： SCI
摘要： Metal ions with smaller radii than Pb2+ can stabilize CsPbBr3 NCs' cubic structure by lattice shrinkage, but lacking sensing research. Herein, Ni-substituting CsPbBr3 NCs were prepared to rapidly and accurately detect water content (WC) in edible oils. CsPb 0.95 Ni 0.05 Br 3 NCs had the highest fluorescence intensity, approximately 125 % of CsPbBr3 NCs. The results displayed that CsPb 0.95 Ni 0.05 Br 3 NCs were uniformly quadrilateral crystalline packing (8.78 +/- 0.28 nm particle size) with inter-planar distances of 0.41, 0.33, and 0.29 nm. Given the fluorescence quenching behavior, a superior linear curve between fluorescence-decreased ratio and WC was established within 0-3 %o (v/v) and a detection limitation of 0.042 %o . Furthermore, excellent precision and accuracy were verified in various oils with a relative error of 2.06 %. It was suggested that water destroyed and dissolved CsPb 0.95 Ni 0.05 Br 3 NCs' crystal structure to induce fluorescence quenching. Thus, Pb-site substitutions of CsPbBr3 NCs enhanced the sensing performance, enlightening other elements-substituted CsPbBr3 NCs for sensing.
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