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文章编号:1672-6987(2026)04-0039-07;DOI:10. 16351/j. 1672-6987. 2026. 04. 005
李新月,王树民,何 鹏* ,周 宏* (青岛科技大学 化学与分子工程学院,山东 青岛 266042)
摘 要:首先合成了 Ab2@Co3O4/CoFe2O4 HNCs 纳米探针,通过三明治夹心法将探针吸附在 96 孔板中,成功构建了比色免疫传感器,实现了 CEA 的快速及高灵敏检测和可视化成像。在 Co3O4/CoFe2O4 HNCs 优异的过氧化物酶(POD)活性下,催化 H2O2快速氧化 3,3′,5,5′-四甲 基苯甲胺(TMB),生成 oxTMB·,实现比色传感的可视化显色反应。检测结果表明,本工作构 建的免疫传感器具有较宽的线性范围 50 ng · mL−1 到 10 pg · mL−1 ,检测限为 5. 35 pg · mL−1 。 在小型化,便携化及简单化的时代下,该传感极大地保证了实验结果的准确性,避免了假阳 性,有望应用在临床检测中。
关键词:POCT;纳米酶;过氧化物酶;比色法;可视化成像
中图分类号:O 657. 3 文献标志码:A
引用格式:李新月,王树民,何鹏,等 . 多功能纳米酶比色法实现 CEA 的快速检测及成像 [J]. 青岛科技大学学报(自然科学版),2026,47(4):39-45.
LI Xinyue, WANG Shumin, HE Peng, et al. Multifunctional nanozyme colorimetric method for rapid detection and imaging of CEA[J]. Journal of Qingdao University of Science and Tech‑ nology(Natural Science Edition),2026,47(4):39-45.
Multifunctional Nanozyme Colorimetric Method for Rapid Detection and Imaging of CEA
LI Xinyue,WANG Shumin,HE Peng,ZHOU Hong (College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042,China)
Abstract:In this work, Ab2@Co3O4/CoFe2O4 HNCs nanoprobes were synthesized, and the probes were adsorbed in 96-well plates by sandwich method. The colorimetric immunosensor was successfully constructed, and the rapid and highly sensitive detection and visual imaging of CEA were realized. Under the excellent peroxidase (POD) activity of Co3O4/CoFe2O4 HNCs, H2O2 was catalyzed to rapidly oxidize 3,3',5,5' -tetramethylaniline (TMB) to generate oxTMB·, which realized the visual color reaction of colorimetric sensing. The detection results showed that the immunosensor constructed in this work had a wide linear range of 50 ng · mL−1 to 10 pg · mL−1 , and the detection limit was 5. 35 pg · mL−1 . In the era of miniaturization, por‑ tability and simplification, the sensing greatly ensures the accuracy of the experimental results and avoids false positives, which is expected to be applied in clinical detection.
Key words:POCT; nanozymes; peroxidase; colorimetry; visual imaging
收稿日期:2025-03-22
作者简介:李新月(1998—),女,硕士研究生 . * 通信联系人 .