Gao Hongjie, He Yun, Liu Jiankang
The Key Laboratory of Biomedical Information Engineering, Ministry of Education, Mitochondrial Biomedical Research Institute, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
Nanomaterials (Basel). 2021 Dec 28;12(1):78. doi: 10.3390/nano12010078.
Here, a new type of PEC aptamer sensor for bisphenol A (BPA) detection was developed, in which visible-light active MoS/Ni-Fe LDH (layered double hydroxide) heterostructure and aptamer were used as photosensitive materials and biometric elements, respectively. The combination of an appropriate amount of MoS and Ni-Fe LDH enhances the photocurrent response, thereby promoting the construction of the PEC sensor. Therefore, we used a simple in situ growth method to fabricate a MoS/Ni-Fe LDH sensor to detect the BPA content. The aptasensor based on aptamer/MoS/Ni-Fe LDH displayed a linear range toward a BPA of 0.05-10 to 50-40,000 ng L, and it has excellent stability, selectivity and reproducibility. In addition, the proposed aptamer sensor is effective in evaluating real water samples, indicating that it has great potential for detecting BPA in real samples.
在此，开发了一种用于检测双酚A（BPA）的新型光电化学适体传感器，其中可见光活性的MoS/Ni-Fe层状双氢氧化物（LDH）异质结构和适体分别用作光敏材料和生物识别元件。适量的MoS和Ni-Fe LDH的结合增强了光电流响应，从而促进了光电化学传感器的构建。因此，我们采用简单的原位生长方法制备了用于检测BPA含量的MoS/Ni-Fe LDH传感器。基于适体/MoS/Ni-Fe LDH的适体传感器对BPA的线性检测范围为0.05 - 10至50 - 40,000 ng L，并且具有出色的稳定性、选择性和重现性。此外，所提出的适体传感器在评估实际水样中是有效的，这表明它在检测实际样品中的BPA方面具有巨大潜力。
