Hexagonal Core–Shell SiO2[–MOYI]Cl–]Ag Nanoframeworks for Efficient Photodegradation of the Environmental Pollutants and Pathogenic Bacteria

Padervand, Mohsen; Asgarpour, Farnaz; Akbari, Ali; Sis, Bagher Eftekhari; Lammel, Gerhard

doi:10.1007/s10904-019-01095-2

Cited by 16 publications

(7 citation statements)

References 38 publications

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“…The initial concentration of the bacterial cell samples was adjusted to 10 7 CFU (colony-forming unit). At various time intervals, the sample suspension was analyzed based on the counting protocols explained in our previous work in detail [57].…”

Section: Photoinactivation Of E Coli and S Aureus Pathogenic Microorg...mentioning

confidence: 99%

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Dawi,

Padervand,

Bargahi

et al. 2023

Mater. Res. Express

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A visible-light-active plasmonic photocatalyst was prepared from bismuth sulfide particles modified with Ag-AgCl nanoparticles. The structure of the photocatalyst was analyzed using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), elemental mapping, nitrogen adsorption-desorption isotherms (BET-BJH), and diffuse reflectance spectroscopy (DRS). To evaluate the photocatalytic performance, Acid Blue 92 (AB92) azo dye was degraded in an aqueous solution under visible light illumination. It was found that 0.025 g of the photocatalyst was able to remove over 98% of the AB92 solution at a concentration of 15 ppm and pH 7.5, in accordance with pseudo-first-order kinetics. Superoxide anion radicals (O2-˙) are key components of the photodegradation pathway. Furthermore, the antibacterial activity of the material was investigated against E. coli and S. aureus under irradiation and dark conditions. Transmission electron microscopy (TEM) images of the treated cells showed that the plasmonic photocatalyst destroyed the gram-positive and gram-negative bacterial cell wall structures within two hours of treatment. It is possible that this was caused by efficient generation of destructive superoxide anion radicals on the surface of Ag-AgCl/Bi2S3 particles. 

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Section: Photoinactivation Of E Coli and S Aureus Pathogenic Microorg...mentioning

confidence: 99%

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Dawi,

Padervand,

Bargahi

et al. 2023

Mater. Res. Express

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show abstract

“…The core-shell particles are of numerous shapes beyond spherical; cubical [3], prismatic [4], hexagonal [5], octahedral [6], disc-like [7], tubular [8], and wire-shaped [9], core-shell nano and microparticles have been studied (Figure 4). The anisotropy of their morphology has led to unique catalytic [10], optical [10], magnetic [11], and electrical [12] properties.…”

Section: Morphology-based Classification Of Core-shell Particlesmentioning

confidence: 99%

Core shell particles

Gopal

Sudarshan

2022

Surface Engineering

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“…Ag NPs are made by reducing silver salt using a variety of processes, including chemical, biogenic, photo-reduction, thermal and radiation [7][8][9][10]. These silver nanomaterials are used as a research tool in various sectors, like photodegradation of environmental pollutants, photocatalysts for removing hazardous substances, especially dyes, gases and biomedical wastes, cancer cells treatment and removal of heavy metals from water bodies [11][12][13][14][15]. Moreover, Ag NPs are utilized in biosensing to assess several chemical substances in environmental, laboratorial, and clinical serums [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric and Spectrofluorimetric Quantification of Urea via Silver Nanoparticles Prepared by Wet Chemical Method

Ismail¹

2023

Catal Res

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Silver nanoparticles have been utilized in an easy, sensitive, and effective approach through spectrophotometry and spectrofluorimetry to quantify urea in water samples. Here, 1,3-di-(1H-imidazole-1-yl) -2-propanol (DIPO) was employed to stabilize Ag NPs produced from the reduction of aqueous silver nitrate by sodium borohydride (NaBH<sub>4</sub>). Beer-Lambert's law was applied for determination using the complexation of Ag NPs with urea molecules. The results show urea can be assessed concurrently with good results and percent recoveries. The UV-visible absorbance and fluorescence emission calibration curves were plotted at 445 and 471 nm wavelengths, respectively. Beer-Lambert’s law was obeyed in the 0.1-15 mM concentration range. A linear correlation for both UV-visible spectrophotometry and spectrofluorimetry was obtained on optimum conditions using the suggested methods having a limit of detection (LOD) was found to be 0.897 and 0.048, respectively. The percent recovery ± RSD by the spectrophotometric and spectrofluorimetric method was found to be 88 ± 19.7%, 96.67 ± 21.53%, 130.8 ± 1.33% and 102.3 ± 12.7%, 97.26 ± 5.63%, 111.4 ± 3.8%, respectively. Following a comparison of the obtained data, it may be possible to identify spectroscopic approaches with greater efficacy and efficiency that may be used to determine urea's presence in actual samples of biological and non-biological fluids.

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Hexagonal Core–Shell SiO2[–MOYI]Cl–]Ag Nanoframeworks for Efficient Photodegradation of the Environmental Pollutants and Pathogenic Bacteria

Cited by 16 publications

References 38 publications

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Efficient visible-light-driven photocatalytic removal of Acid Blue 92, E. coli, and S. aureus over Ag-AgCl nanoparticles-decorated bismuth sulfide microparticles

Core shell particles

Spectrophotometric and Spectrofluorimetric Quantification of Urea via Silver Nanoparticles Prepared by Wet Chemical Method

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