Selective detection of catechol by boronized perovskite quantum dots
LIU Xin-ni, WEI Xiao, YANG Yu-yu, WANG Feng-jie, HE Hong-zhu, QIN Fang, LIU Jia-li, WANG Fei
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China
Abstract：Boronized perovskite quantum dots (APBA-PQDs) were prepared using an aqueous emulsion method. Based on the borate affinity mechanism between APBA-PQDs and catechol, a new method for the efficient and rapid detection of catechol in water was established, which solved the difficult problem that PQDs sensor was easy to condense and quench in water and had low selectivity. The morphology and optical properties of APBA-PQDs were characterized by transmission electron microscopy (TEM), fluorescence spectrum and UV-Vis spectrum, and the detection performance and mechanism of APBA-PQDs fluorescence sensor for catechol were explored. It was shown that the best detection was achieved when n (PQDs: APBA)=1:1, the response time was 7min, and the pH was 7. Under the optimal detection conditions, the relative fluorescence intensity ratio (F0/F) of APBA-PQDs had a good linear relationship with the concentration of catechol, and the detection limit was 72nmol/L. In addition, APBA-PQDs sensor had good selectivity and anti-interference, and can be used for the rapid detection of catechol in actual water samples, which provides a reference for the subsequent application of perovskite quantum dots in the detection of water phase pollutants.
刘欣妮, 卫潇, 杨钰钰, 王凤杰, 何红珠, 秦昉, 刘佳丽, 王菲. 硼酸化钙钛矿量子点对邻苯二酚的选择性检测[J]. 中国环境科学, 2023, 43(7): 3526-3532.
LIU Xin-ni, WEI Xiao, YANG Yu-yu, WANG Feng-jie, HE Hong-zhu, QIN Fang, LIU Jia-li, WANG Fei. Selective detection of catechol by boronized perovskite quantum dots. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(7): 3526-3532.
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