학술논문
Temperature-Induced Conversion of 2D Vanadium-Doped MoSe 2 Nanosheets to 1D V 2 MoO 8 Rods: Enhanced Performance in Electrochemical Antibiotic Detection in Biological and Environmental Samples.
Document Type
Academic Journal
Author
Karthik R; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.; Centre of Molecular Medicine and Diagnostics (COMManD), Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600 077, India.; Sukanya R; Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland.; Chavan PR; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.; Hasan M; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.; Kamaraj E; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.; Breslin CB; Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland.; Lee J; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.; Shim JJ; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, The Republic of Korea.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 101504991 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1944-8252 (Electronic) Linking ISSN: 19448244 NLM ISO Abbreviation: ACS Appl Mater Interfaces Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
In this work, new strategies were developed to prepare 1D-V 2 MoO 8 (VMO) rods from 2D V-doped MoSe 2 nanosheets (VMoSe 2 ) with good control over morphology and crystallinity by a facile hydrothermal and calcination process. The morphological changes from 2D to 1D rods were controlled by changing the calcination temperature from 300 to 600 °C. The elimination of Se and the incorporation of O into the V-Mo structure were evaluated by TGA, p-XRD, Raman, FE-SEM, EDAX, FE-TEM, and XPS analyses. These results prove that the optimization of the physical parameters leads to changes in the crystal phase and textural properties of the prepared material. The VMoSe 2 and its calcined products were investigated as electrochemical sensors for the detection of the antibacterial drug nitrofurantoin (NFT). At a calcination temperature of 500 °C, the modified screen-printed carbon electrodes (SPCE) proved to be an excellent electrochemical sensor for the detection of NFT in neutral media. Under the optimized conditions, VMO-500 °C/SPCE exhibits low detection limit (LOD) (0.015 μM), wide linear ranges (0.1-31, 47-1802 μM), good sensitivity, and selectivity. The proposed sensor was successfully used for the analysis of NFT in real samples with good recovery results. Moreover, the reduction potential of NFT agreed well with the theoretical analysis using quantum chemical calculations, with the B3LYP with 6-31G(d,p) basis set predicting an E 0 value of -0.45 V. The interaction between the electrode surface and NFT via the LUMO diagram and the electrostatic potential surface is also discussed.