Core-shell "loading-type" nanomaterials enabling glucometer readout for portable and sensitive detection of p-aminophenol in real samples
文献类型： 外文期刊
作者： Li, Xiang-Ling 1 ; Zhao, Lei 1 ; Wang, Zi-Heng 1 ; Song, Tian-Shun 1 ; Guo, Ting 3 ; Xie, Jing Jing 1 ;
作者机构： 1.Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
2.Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing 211816, Peoples R China
3.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
关键词： Core-shell; "Loading-type" nanomaterials; MnO2 nanosheets; Amplifiable nanoprobes; PAP, On-site detection
期刊名称：MICROCHIMICA ACTA （ 影响因子：5.7； 五年影响因子：5.4 ）
ISSN： 0026-3672
年卷期： 2024 年 191 卷 3 期
页码：
收录情况： SCI
摘要： A one-target-many-trigger signal model sensing strategy is proposed for quickly, sensitive and on-site detection of the environmental pollutant p-aminophenol (PAP) by use of a commercial personal glucose meter (PGM) for signal readout with the core-shell "loading-type" nanomaterial MSNs@MnO2 as amplifiable nanoprobes. In this design, the mesoporous silica nanoparticles (MSNs) nanocontainer with entrapped signal molecule glucose is coated with redoxable manganese dioxide (MnO2) nanosheets to form the amplifiable nanoprobes (Glu-MSNs@MnO2). When encountered with PAP, the redox reaction between the MnO2 and PAP can induce the degradation of the outer layer of MSNs@MnO2, liberating multiple copies of the loaded glucose to light up the PGM signal. Owing to the high loading capability of nanocarriers, a "one-to-many" relationship exists between the target and the signal molecule glucose, which can generate adequate signal outputs to achieve the requirement of on-site determination of environmental pollutants. Taking advantage of this amplification mode, the developed PAP assay owns a dynamic linear range of 10.0-400 mu M with a detection limit of 2.78 mu M and provides good practical application performance with above 96.7 +/- 4.83% recovery in environmental water and soil samples. Therefore, the PGM-based amplifiable sensor for PAP proposed can accommodate these requirements of environment monitoring and has promising potential for evaluating pollutants in real environmental samples.
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