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    • Unraveling the Roles of Morphology and Steric Hindrance on Electrochemical Analytical Performance of α-Fe2O3 Nanostructures-Based Nanosensors towards Chloramphenicol Antibiotic in Shrimp Samples
    Authors: Nguyen, Ngoc Huyen; Ngo, Xuan Dinh; Mai, Quan Doan;  Advisor: -;  Co-Author: - (2022)

    In this work, we investigated the effect of morphology on the analytical performance of α-Fe2O3 nanostructures-based electrochemical sensors toward chloramphenicol (CAP) antibiotic using three designed morphologies including α-Fe2O3 nano-tube (α-Fe2O3-T), α-Fe2O3 nano-rice (α-Fe2O3-R), and α-Fe2O3 nano-plate (α-Fe2O3-P). Among these morphologies, α-Fe2O3-T displayed an outstanding electrochemical activity owing to the unique hollow structure and large specific surface area. However, due to the small pores size, α-Fe2O3-T showed the high steric hindrance (SD) effect towards an antibiotic with complex molecular structure, as CAP, leading to a significant decrease of their CAP electrochemical sensing performance. The CAP analytical performance of α-Fe2O3-R was highest in investigated m...