Photocatalytic, anti-bacterial performance and development of 2,4-diaminophenylhydrazine chemical sensor probe based on ternary doped Ag·SrSnO nanorods

• Published in: New journal of chemistry 2021-01, Vol.45 (3), p.1634-165
• Main Authors: Subhan, Md Abdus, Rifat, Tanjila Parvin, Saha, Pallab Chandra, Alam, M. M, Asiri, Abdullah M, Raihan, Topu, Azad, Abul Kalam, Ghann, William, Uddin, Jamal, Rahman, Mohammed M
• Format: Article
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d0nj04813e

In this approach, Ag·SrSnO 3 nanocomposites were synthesized by a co-precipitation method and characterized by IR, XRD, SEM, EDS, CV, EIS, and TEM measurements. The nanocomposite Ag·SrSnO 3 was crystallized in nanorods (NRs) with Ag on the surface, as revealed by SEM and TEM studies. Ag·SrSnO 3 shows excellent photocatalysis for dye degradation and anti-bacterial activity against both Gram positive and Gram negative pathogenic bacteria. Here, to develop a selective 2,4-diaminophenylhydrazine (2,4-DAPHyd) electrochemical sensor, a thin layer of prepared Ag·SrSnO 3 NRs was deposited onto a glassy carbon electrode (GCE) with Nafion as the conductive binder (5% Nafion) in ethanol. The slope obtained from the curve of a plot of current versus concentration of 2,4-DAPHyd, denoted the calibration curve, was used to calculate the sensitivity (7.5854 μA μM −1 cm −2 ) of the Ag·SrSnO 3 NRs sensor. The linear dynamic range (LDR) of detection is 0.1 nM-0.01 mM. The lowest limit of detection (LOD; 96.13 ± 4.81 pM) of the Ag·SrSnO 3 NR sensor was calculated at S/N = 3 (signal to noise ratio). Furthermore, the Ag·SrSnO 3 NR sensor shows good reproducibility, long duration for performing sensing ability and a short response time and validation in real samples, which were collected and extracted from various sources. Ag·SrSnO 3 NRs is an excellent photocatalyst, kills both Gram positive and Gram negative bacteria. The 2,4-DAPHyd sensor fabricated by layered Ag · SrSnO 3 NRs onto GCE shows high sensitivity (7.5854 μA μM −1 cm −2 ); LDR, 0.1 nM~0.01 mM & LOD, 96.13 ± 4.81 pM.