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    • Dual-functional sensing properties of ZnFe2O4 nanoparticles for detection of the chloramphenicol antibiotic and sulphur dioxide gas
    Authors: Nguyen Thanh Vinh; Nguyen Thanh Hai; Tran Van Dang; Bui Thi Hang; Anh-Tuan Le; Tuyet Nhung Pham; Ngo Xuan Dinh; Vu Dinh Lam; Mam Hoai Nam; Tran Dang Thanh; Nguyen Trung Huy; Nguyen Van Quy;  Advisor: -;  Co-Author: - (2021)

    Zinc Ferrite (ZnFe2O4, ZFO) nanoparticles (NPs) as a multi-sensing material are successfully synthesised via a hydrothermal method and a following annealing treatment. The as-prepared ZFO-NPs were applied in electrochemical and mass-type sensors by depositing NPs directly on the screen-printed electrode (SPE) and the active electrode of a quartz crystal microbalance (QCM), respectively. The obtained results show the ZFO-NPs possessed excellent detection performance to sulphur dioxide (SO2) in the range of 2.5–20 ppm at room temperature. QCM sensor coated with ZFO-NPs showed a high response, good repeatability, as well as short-response time. Moreover, the modified-SPE with ZFO-NPs sen...