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Fabrication of potato-like silver molybdate microstructures for photocatalytic degradation of chronic toxicity ciprofloxacin and highly selective electrochemical detection of H 2 O 2

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ABSTRACT

In the present work, potato-like silver molybdate (Ag2MoO4) microstructures were synthesized through a simple hydrothermal method. The microstructures of Ag2MoO4 were characterized by various analytical and spectroscopic techniques such as XRD, FTIR, Raman, SEM, EDX and XPS. Interestingly, the as-prepared Ag2MoO4 showed excellent photocatalytic and electrocatalytic activity for the degradation of ciprofloxacin (CIP) and electrochemical detection of hydrogen peroxide (H2O2), respectively. The ultraviolet-visible (UV-Vis) spectroscopy results revealed that the potato-like Ag2MoO4 microstructures could offer a high photocatalytic activity towards the degradation of CIP under UV-light illumination, leads to rapid degradation within 40 min with a degradation rate of above 98%. In addition, the cyclic voltammetry (CV) and amperometry studies were realized that the electrochemical performance of Ag2MoO4 modified electrode toward H2O2 detection. Our H2O2 sensor shows a wide linear range and lower detection limit of 0.04–240 μM and 0.03 μM, respectively. The Ag2MoO4 modified electrode exhibits a high selectivity towards the detection of H2O2 in the presence of different biological interferences. These results suggested that the development of potato-like Ag2MoO4 microstructure could be an efficient photocatalyst as well as electrocatalyst in the potential application of environmental, biomedical and pharmaceutical samples.

No MeSH data available.


(A–C) SEM images of Ag2MoO4 at different magnifications (A) 10 μm (B) 5 μm (C) 3 μm and (D) corresponding to EDX spectrum of Ag2MoO4.
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f3: (A–C) SEM images of Ag2MoO4 at different magnifications (A) 10 μm (B) 5 μm (C) 3 μm and (D) corresponding to EDX spectrum of Ag2MoO4.

Mentions: The surface morphology of the as-prepared microstructures was investigated by SEM. Figure 3(A–C) illustrated the general views of the different magnifications of the obtained Ag2MoO4 microstructures. The images are clearly displayed the potato-like structure of Ag2MoO4 which seems like bunches of potatoes with clean and fairly smooth surfaces, the average diameters of microstructures about 1–2 μm. Energy dispersive x-ray spectra (EDX) were used to identify the elements present in the as-prepared Ag2MoO4 microparticles, as depicted in Fig. 3D. The EDX spectra showed the peaks at approximately 0.5, 2.4 and 3 keV reveal the presence of O, Mo, and Ag elements in the material without any other significant impurities.


Fabrication of potato-like silver molybdate microstructures for photocatalytic degradation of chronic toxicity ciprofloxacin and highly selective electrochemical detection of H 2 O 2
(A–C) SEM images of Ag2MoO4 at different magnifications (A) 10 μm (B) 5 μm (C) 3 μm and (D) corresponding to EDX spectrum of Ag2MoO4.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5037444&req=5

f3: (A–C) SEM images of Ag2MoO4 at different magnifications (A) 10 μm (B) 5 μm (C) 3 μm and (D) corresponding to EDX spectrum of Ag2MoO4.
Mentions: The surface morphology of the as-prepared microstructures was investigated by SEM. Figure 3(A–C) illustrated the general views of the different magnifications of the obtained Ag2MoO4 microstructures. The images are clearly displayed the potato-like structure of Ag2MoO4 which seems like bunches of potatoes with clean and fairly smooth surfaces, the average diameters of microstructures about 1–2 μm. Energy dispersive x-ray spectra (EDX) were used to identify the elements present in the as-prepared Ag2MoO4 microparticles, as depicted in Fig. 3D. The EDX spectra showed the peaks at approximately 0.5, 2.4 and 3 keV reveal the presence of O, Mo, and Ag elements in the material without any other significant impurities.

View Article: PubMed Central - PubMed

ABSTRACT

In the present work, potato-like silver molybdate (Ag2MoO4) microstructures were synthesized through a simple hydrothermal method. The microstructures of Ag2MoO4 were characterized by various analytical and spectroscopic techniques such as XRD, FTIR, Raman, SEM, EDX and XPS. Interestingly, the as-prepared Ag2MoO4 showed excellent photocatalytic and electrocatalytic activity for the degradation of ciprofloxacin (CIP) and electrochemical detection of hydrogen peroxide (H2O2), respectively. The ultraviolet-visible (UV-Vis) spectroscopy results revealed that the potato-like Ag2MoO4 microstructures could offer a high photocatalytic activity towards the degradation of CIP under UV-light illumination, leads to rapid degradation within 40 min with a degradation rate of above 98%. In addition, the cyclic voltammetry (CV) and amperometry studies were realized that the electrochemical performance of Ag2MoO4 modified electrode toward H2O2 detection. Our H2O2 sensor shows a wide linear range and lower detection limit of 0.04–240 μM and 0.03 μM, respectively. The Ag2MoO4 modified electrode exhibits a high selectivity towards the detection of H2O2 in the presence of different biological interferences. These results suggested that the development of potato-like Ag2MoO4 microstructure could be an efficient photocatalyst as well as electrocatalyst in the potential application of environmental, biomedical and pharmaceutical samples.

No MeSH data available.