Vào lúc 9h30 ngày 06-10-2022, Viện nghiên cứu lý thuyết và ứng dụng (ITAR) tổ chức seminar khoa học, người trình bày: TS. Nguyễn Tiến Đại.

Title: "CdS/Au/TiO2 Nanowire Composite as Selective, Sensitive and Reliable Immunosensors for Detecting Octachlorostyrene under Visible Light"

Abstract: We report on the synthesis of the CdS/Au/TiO₂ nanowire photoelectrode (CdS/Au/TiO₂ NWs) using the electrodeposition and pulse–electrical deposition methods. The characteristics of CdS/Au/TiO₂ nanowires were investigated by scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy. By fixing cross-linking anti-octachlorostyrene antibody onto the CdS/Au/TiO₂ nanowire, the photoelectrochemical (PEC) immunosensor was fabricated for detecting octachlorostyrene (OCS) under visible light. This PEC sensor shows high stability, good sensitivity and selectivity for OCS of concentration from 10^–12 M to 5×10^–5 M with a limit of detection (LOD) of 2.24×10^–12 M. The photocurrent response of device showed the linear dependence on logarithm of OCS concentration with a regression equation of (I_o–I)/I_o = 0.78665 + 0.06111 log C_OCS (where R² = 0.992) in the concentration range from 10^–12 M to 10^–7 M. As a result, we suggest that the nanowire composite materials could be effectively used for fabricating PEC immunosensors to detect OCS in the water sample

Seminar sẽ diễn ra theo hình thúc hybrid (offline + online; link online: meet.google.com/qyn-ypjg-dox).

Trân trọng kính mới quý thầy cô và đồng nghiệp tham gia buổi seminar.

Trân trọng.

Viện trưởng ITAR.

PGS. TS. Vũ Thị Kim Liên