Photo-enhanced antibacterial activity of Ag 3 PO 4

Seo, Youngsik; Yeo, Byul-Ee; Cho, Young-Sik; Park, Heonyong; Kwon, Chian; Huh, Young‐Duk

doi:10.1016/j.matlet.2017.03.105

Cited by 22 publications

(12 citation statements)

References 27 publications

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“…These results indicate that the incorporation of silver into brushite lattice did not prove to be effective, and silver doping thus appears to be only feasible in the form of an intimate association with an Ag 3 PO 4 secondary phase. This latter compound as such was reported to exhibit antibacterial properties [55,56]. Moreover, sil ver phosphate was also used in recent advances on injectable bone cement formulations based on brushite and vaterite so as to convey an antibacterial activity to the starting precipitation medium [21,57].…”

Section: Ray Diffraction/structural Analysismentioning

confidence: 99%

Brushite (Ca,M)HPO4, 2H2O doping with bioactive ions (M = Mg2+, Sr2+, Zn2+, Cu2+, and Ag+): a new path to functional biomaterials?

Sayahi

Santos

Elfeki

et al. 2020

Materials Today Chemistry

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Ion substitution Human stem cells Bone biomaterial Calcium phosphate Dicalcium phosphate dihydrate, DCPD (CaHP0 4 •2H 2 O), brushite, is an important calcium phosphate compound encountered in mineralized tissues and used in medicine, especially in bone cernent for mulations. However, the use of DCPD as direct implantable biomaterial has not received dedicated attention. In addition, the possibility to dope DCPD with biologically active ions to modulate its per formances was not systematically explored. We have investigated in depth the doping of DCPD with Mg 2+ , sr2 + , Zn 2+ , Cu 2+ , and Ag + ions. Clear modifications in terms of chemical composition, particl e size, pore distribution, crystal morphology, and affinity for water were pointed out. Then, the samples were cultured with human adipose derived stem cells to explore cytotoxicity and proliferation. Various be haviors were noticed dependent on the incorporated metal ions. Such DCPD compounds associated with bioactive metal ions, and particularly Ag + and Zn 2+ , appear promising as a new family of reactive ma terials for use, as such or in combination, in bone related applications.

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Section: Ray Diffraction/structural Analysismentioning

confidence: 99%

Brushite (Ca,M)HPO4, 2H2O doping with bioactive ions (M = Mg2+, Sr2+, Zn2+, Cu2+, and Ag+): a new path to functional biomaterials?

Sayahi

Santos

Elfeki

et al. 2020

Materials Today Chemistry

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show abstract

“…Among them, the p-type semiconductor silver orthophosphate (Ag 3 PO 4 ) has been often reported as a promising alternative to visible light active TiO 2 -based materials in the field of solar photocatalysis. The narrow band gap energy enables its visible light activation, and the strong oxidizing power [18][19][20] justifies its extensive investigation in scientific reports dealing with organic dye degradation, bacterial disinfection, and water splitting reaction [18,19,21]. In particular, quantum efficiency up to 90% can be achieved for O 2 evolution under visible light irradiation in the presence of Ag 3 PO 4 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Solar Light Photocatalytic Activity of Ag Doped TiO2–Ag3PO4 Composites

et al. 2020

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Composites comprised of Ag3PO4 and bare TiO2 (TiO2@Ag3PO4) or silver doped TiO2 (Ag@TiO2–Ag3PO4) have been synthesized by coupling sol–gel and precipitation methods. For the sake of comparison, also the bare components have been similarly prepared. All the samples have been characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), Fourier transformed infrared spectroscopy (FTIR), photoelectrochemical measurements, and specific surface area (SSA) analysis. The optoelectronic and structural features of the samples have been related to their photocatalytic activity for the degradation of 4–nitrophenol under solar and UV light irradiation. Coupling Ag3PO4 with silver doped TiO2 mitigates photocorrosion of the Ag3PO4 counterpart, and remarkably improves the photocatalytic activity under solar light irradiation with respect to the components, to the TiO2–Ag3PO4 sample, and to the benchmark TiO2 Evonik P25. These features open the route to future applications of this material in the field of environmental remediation.

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“…Then, the oxygen vacancies could greatly improve the e --h + pair separation which enhanced the photocatalytic performance. Furthermore, the ROS generated could be another reason that terminating the bacterial cells as the ROS could damage the cell membrane and release cellular constituents including lipids and proteins [5,16]. To further interpret photocatalytic disinfection process, radical scavenging tests were conducted to evaluate the main ROS that partook in the photocatalytic disinfection process.…”

Section: Detection Of Reactive Oxygen Species (Ros)mentioning

confidence: 99%

“…Recently, the development of light-induced catalytic and antibacterial materials that able to mineralize organic pollutants and inactivate microorganisms has drawn significant attention [4,5]. Irradiation of photocatalyst with light energy results in the formation of reactive oxygen species (ROS), which lead to mineralization of organic pollutants and bacterial inactivation.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of ZnO Flower-Like Micro/nanostructures with Enhanced Antibacterial Activity

2018

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Flower-like ZnO micro/nanostructures were synthesized via a simple reflux route without addition of surfactant. The characterization of as-synthesized ZnO sample was performed using X-ray diffraction, field-emission scanning electron microscopy and photoluminescence spectroscopy. The activity of the as-synthesized photocatalyst was evaluated using colony counting method under UV irradiation. The results showed that the as-synthesized ZnO sample exhibited excellent photocatalytic disinfection towards Escherichia coli. A possible disinfection mechanism was also postulated based on the findings from microscopic images and radical scavenging experiments.

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Photo-enhanced antibacterial activity of Ag 3 PO 4

Cited by 22 publications

References 27 publications

Brushite (Ca,M)HPO4, 2H2O doping with bioactive ions (M = Mg2+, Sr2+, Zn2+, Cu2+, and Ag+): a new path to functional biomaterials?

Brushite (Ca,M)HPO4, 2H2O doping with bioactive ions (M = Mg2+, Sr2+, Zn2+, Cu2+, and Ag+): a new path to functional biomaterials?

Enhanced Solar Light Photocatalytic Activity of Ag Doped TiO2–Ag3PO4 Composites

Facile Synthesis of ZnO Flower-Like Micro/nanostructures with Enhanced Antibacterial Activity

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