Bifunctional Magnetic Fe<sub>3</sub>O<sub>4</sub>@Cu<sub>2</sub>O@TiO<sub>2</sub> Nanosphere-Mediated Dual-Mode Assay of PTP1B Activity Based on Photocurrent Polarity Switching and Nanozyme-Engineered Biocatalytic Precipitation StrategiesQingqing Zhang, Jinhua Chen, Haokun Yang et al.|Analytical Chemistry|2022Cited by 38