Synthesis, antifungal evaluation and optical properties of silver molybdate microcrystals in different solvents: a combined experimental and theoretical study

Abstract

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Connecting structural, optical, and electronic properties and photocatalytic activity of Ag3PO4:Mo complemented by DFT calculations

“…In the Ag3PO4:Mo samples, additional lines appear around 860, 756 (very weak), and 364 cm −1 . Those correspond to the typical lines of -Ag2MoO4 (A1g, T2g, and T2g, respectively), as reported in the 300-900 cm −1 range [33][34][35]. [33]) was considerably exalted, even in the low-doped Ag3PO4:Mo 0.5 % sample, suggesting a local loss of symmetry compared to pure Ag2MoO4.…”

In Vitro Toxic Effect of Biomaterials Coated with Silver Tungstate or Silver Molybdate Microcrystals

“…Surfaces with antimicrobial properties are highly useful in applications requiring a protective barrier against infection, and the use of nanoparticles or microcrystals represents a promising strategy, since they have the ability to inhibit the growth of microorganisms by different mechanisms [13,32]. Despite the promising and effective antimicrobial activity [18,19], the use of nanoparticles or microcrystals should be indicated with caution since the same death mechanisms of the microorganisms can also cause the death of human body cells. Genetic changes, systemic sclerosis, rheumatoid arthritis, lupus erythematosus, and chronic kidney disease can be caused by the exposure to nanoparticles [33][34][35].…”

“…To perform the cytotoxicity assay, serial dilutions, in DMEM culture medium with 10% FBS, were made to reach concentrations of 0.25 mg/mL and 0.125 mg/mL for both microcrystals. These concentrations were selected according to the minimum inhibitory concentrations (MIC) determined after previous microbiological tests [18,19,30]. The cells (HaCaT cell line 0341) were plated at 1:5 × 10 4 cells/well in sterile 96-well plates and incubated (5% CO 2 /37°C).…”

“…Silver nanoparticles (AgNPs) have been shown to have significant antimicrobial activity against planktonic cells and biofilms of Candida glabrata, Candida tropicalis, Staphylococcus aureus, and methicillin-resistant Staphylococcus aureus (MRSA) [13][14][15][16][17]. Recent studies have shown the antimicrobial effect of Ag as a microcrystal [18][19][20][21]. The ability of Ag 2 WO 4 in fighting Candida albicans is related to the imperfect and crystalline patterns of atom arrangements in its orthorhombic structure and good photocatalytic capacity under visible light [21].…”

Unvealing the role of β-Ag2MoO4 microcrystals to the improvement of antibacterial activity

“…Particularly, silver molybdates have been investigated in the fields of lubrication [14,15], humidity and gas sensors [16,17], surface enhanced Raman scattering techniques [18,19], photocatalysis [11][12][13]20,21], and photoluminescence [20,22,23]. A plethora of synthetic methods have been used to harness these applications, such as hydrothermal [19,[24][25][26][27], solution-based chemical reaction [18], co-precipitation [23,28], dynamic template route [21], laser annealing [29], and microwave-assisted hydrothermal methods [20,30]. In this context, Ng and Fan [31] have recently reported the preparation of β-Ag 2 MoO 4 crystals with high-index facets via the delicate tuning of the supersaturation conditions during crystal growth.…”