首页> 外文期刊>Journal of Applied Polymer Science >Facile synthesis of up-conversionCit-NaYF4:Yb,Tm @phenol-formaldehyde resin@Ag composites for the sensitive detection ofS(2)(-)
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Facile synthesis of up-conversionCit-NaYF4:Yb,Tm @phenol-formaldehyde resin@Ag composites for the sensitive detection ofS(2)(-)

机译:容易合成UP-COMPRASSIES-NAYF4:Yb,TM,苯酚 - 甲醛树脂@ Ag复合材料,用于敏感检测(2)( - )

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摘要

In this work, we synthesized the core-shell structure citric acid-modified up-conversion luminescent nanoparticles (Cit-NaYF4:Yb,Tm) (denoted as UC)@ polymer of phenol-formaldehyde resin (PFR) particles. Ag nanoparticles were successfully loaded onto the PFR's shell by direct reduction of AgNO(3)in situ with rich hydroxyl groups in PFR and a new application of the UC@PFR@Ag composites for detection of S(2-)was investigated. A good linear relationship between the fluorescence intensity of as-synthesis of UC@PFR@Ag composites and the concentration of S(2-)could be found within the range of 2-100 nM (R-2= 0.9929) with a limit of detection of 0.67 nM. The values of S(2-)content in actual water samples obtained with the proposed method are much closer to unity as compared to the corresponding values obtained with the UV method.
机译:在这项工作中,我们合成了核壳结构的柠檬酸修饰的上转换发光纳米颗粒(Cit-NaYF4:Yb,Tm)(表示为UC)@酚醛树脂(PFR)颗粒的聚合物。通过在原位直接还原PFR中富含羟基的AgNO(3),成功地将Ag纳米颗粒装载到PFR的外壳上,这是一个新的应用UC@PFR@研究了用于S(2-)检测的银复合材料。as的荧光强度与合成产物的荧光强度之间存在良好的线性关系UC@PFR@银复合物和S(2-)的浓度在2-100nm(R-2=0.9929)范围内,检测限为0.67nm。与用UV法获得的相应值相比,用该方法获得的实际水样中S(2-)含量的值更接近于统一。

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