Microchimica Acta ( IF 5.3 ) Pub Date : 2024-07-24 , DOI: 10.1007/s00604-024-06540-9 Kun Xu 1 , Xuan Kuang 1 , Nuo Zhang 1 , Rui Xu 1, 2 , Xuejing Liu 1 , Qin Wei 1, 3
|
An original molecular imprinting photoelectrochemical (PEC) sensor for sarcosine detection based on stable lead-free inorganic halide double perovskite Cs2AgBiBr6 is proposed. Cs2AgBiBr6 as a lead-free halide perovskite material possesses several positive optoelectronic properties for PEC analysis, such as long-lived component to the charge-carrier lifetime, and strong absorption of visible light. At the same time, two-dimensional materials also offer excellent electronic and mechanical properties; thus, Bi2O2S was used and combined with Cs2AgBiBr6 to provide a stable and large photocurrent, which also benefits from the stability of perovskite Cs2AgBiBr6. Based on this novel PEC assay, the detection range for sarcosine was between 0.005 and 5000 ng/mL with a low detection limit of 0.002 ng/mL. This work also improved the adhibition of metal halide perovskite in analytical chemistry field, providing a novel way for other small molecule detection.
Graphical abstract
中文翻译：
基于Bi2O2S敏化钙钛矿Cs2AgBiBr6的分子印迹光电化学传感器用于肌氨酸测定
提出了一种基于稳定无铅无机卤化物双钙钛矿Cs 2 AgBiBr 6的用于肌氨酸检测的原创分子印迹光电化学（PEC）传感器。 Cs 2 AgBiBr 6作为一种无铅卤化物钙钛矿材料，具有多种适合 PEC 分析的光电特性，例如长寿命的载流子寿命以及对可见光的强吸收。同时，二维材料还具有优异的电子和机械性能；因此，使用Bi 2 O 2 S并与Cs 2 AgBiBr 6结合以提供稳定且大的光电流，这也受益于钙钛矿Cs 2 AgBiBr 6的稳定性。基于这种新型 PEC 测定，肌氨酸的检测范围为 0.005 至 5000 ng/mL，检测下限为 0.002 ng/mL。该工作还提高了金属卤化物钙钛矿在分析化学领域的吸附能力，为其他小分子检测提供了新的途径。
京公网安备 11010802027423号