Determination of 2,4,6-trinitrophenol by in-situ assembly of SBA-15 with multi-hydroxyl carbon dots
Determination of 2,4,6-trinitrophenol by in-situ assembly of SBA-15 with multi-hydroxyl carbon dots
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多羟基碳点原位组装SBA-15测定2,4,6-三硝基苯酚
DOI：
10.1016/j.aca.2019.11.061
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发表时间：
2020
影响因子：
6.2
通讯作者：
Li Ji
中科院分区：
文献类型：
--
作者：
Wang Xuechuan;Li Xinjie;Li Xiao;Wang Yansong;Han Qingxin;Li Ji
以3-缩水甘油氧基丙基三甲氧基硅烷（SBA-15/560）修饰的介孔分子筛SBA-15与多羟基碳点（CD）形成共价键，合成了一种新型的复合荧光探针（SCD）。该复合探针不仅具有多羟基环糊精的优异荧光性能，而且具有高度有序的介孔结构。随后，将该复合荧光探针用于2，4，6-三硝基苯酚（TNP）的检测。结果表明，该复合荧光探针对TNP具有选择性和灵敏性。结果表明，该复合荧光探针在1-8 μ M和10-70 μM范围内有两个较宽的线性范围，检测下限为0.17 μM，低于游离CD对TNP的检测下限（0.3 μM）。通过对真实的水样的分析，证实了该复合探针可以作为一种很有前途的TNP检测传感器。
A novel composite fluorescent probe (SCDs) was synthesized by forming a covalent bond between mesoporous SBA-15 functionalized with 3-glycidyloxypropyltrimethoxysilane (SBA-15/560) and multi-hydroxyl carbon dots (CDs). The composite probe not only presented excellent fluorescence properties of multi-hydroxyl CDs but highly ordered structure of mesopores as well. Subsequently, the composite fluorescent probe was used for 2,4,6-trinitrophenol (TNP) detection. It was found that the composite fluorescent probe had a selective and sensitive response towards TNP. The results of the TNP assay show that the composite fluorescent probe exhibits two wide linear regions in the range of 1–8 and 10–70 μM with a low limit detection of 0.17 μM, which is lower than that of free CDs for TNP (0.3 μM). The analysis of real water samples confirmed that the composite probe could be used as a promising sensor for TNP detection.