A simple “on–offff–on” ECL sensor for glucose determination based on Pd nanowires and Ag doped g-C3N4 nanosheets
A simple “on–offff–on” ECL sensor for glucose determination based on Pd nanowires and Ag doped g-C3N4 nanosheets
复制标题
一种简单的“on”“offff”“on”ECL 传感器，用于基于 Pd 纳米线和 Ag 掺杂 g-C3N4 纳米片的葡萄糖测定
DOI：
10.1039/c9ay02357g
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发表时间：
2020
影响因子：
3.1
通讯作者：
李阳
中科院分区：
文献类型：
--
作者：
范雨;陈时洪;魏沙平;国锦琳;李阳
制备了一维Pd纳米线（PdNWs）和Ag掺杂g-C3N4纳米片（Ag-g-C3N4 NSs），并将其应用于构建简单的“开-关-开”ECL传感器，用于葡萄糖检测。与一些复杂且耗时的合成工艺相比，本研究采用无任何处理的三聚氰胺和AgNO3一步热聚合法制备Ag-g-C3N4 NSs，得到了层状结构。采用pdnw功能化Ag-g-C3N4 NSs作为发光团，显示出突出的ECL性能和优越的高效电子传输能力。将pdnw功能化的Ag-g-C3N4 NSs与葡萄糖- cona -葡聚糖体系的竞争结合反应相结合，制备的“on-off-on”传感器对葡萄糖检测具有高灵敏度和宽线性。线性范围为1.0 × 10−11 M ~ 1.67 × 10−6 M，检出限为3.0 × 10−12 M （S/N = 3）。
One-dimensional Pd nanowires (PdNWs) and Ag doped g-C3N4 nanosheets (Ag-g-C3N4 NSs) were prepared and applied to construct a simple “on–off–on” ECL sensor for glucose detection. Compared to some complex and time-consuming synthetic procedures, in this work, Ag-g-C3N4 NSs were prepared via one step thermal polymerization of melamine and AgNO3 without any handling to get the layered structure. PdNW-functionalized Ag-g-C3N4 NSs were used as luminophores, which displayed prominent ECL performance and superior efficient electron transport capacity. Combining PdNW-functionalized Ag-g-C3N4 NSs with the competitive binding reaction of the glucose–ConA–dextran system, the prepared “on–off–on” sensor showed high sensitivity and wide linearity for glucose detection. The linear range was 1.0 × 10−11 M to 1.67 × 10−6 M and the detection limit was 3.0 × 10−12 M (S/N = 3).