In situ silver nanoparticle synthesis on 3D-printed polylactic acid scaffolds for biomedical applications

Ermiş Şen, Menekşe
An ultraviolet (UV) irradiation-based in situ silver nanoparticle (AgNP) synthesis approach has drawn significant attention for functionalizing a great variety of biomaterials. Here, we designed an AgNP-functionalized 3D-printed polylactic acid (PLA) composite scaffold with a green physical approach by employing the UV irradiation (1, 2, and 3 h) method without using any reducing agent or heat treatments. In situ AgNP synthesis was performed under different UV exposure times. The zeta sizer analysis results demonstrated that AgNPs were highly monodisperse with the particle size of 20 +/- 2.2, 30 +/- 3.6, and 50 +/- 4.8 nm under various UV light exposure times. In situ synthesis of AgNPs on 3D-printed PLA scaffolds significantly changed the surface hydrophilicity of the 3D-printed scaffolds. These results showed that UV irradiation-based in situ AgNP synthesis on 3D-printed PLA scaffolds can be useful in various biomedical applications, such as cell culture scaffolds, biosensors, and wound healing applications.


Bactericidal and in vitro osteogenic activity of nano sized cobalt-doped silicate hydroxyapatite
Alshemary, Ammar Z.; Hussain, Rafaqat; Dalgic, Ali Deniz; Evis, Zafer (2022-10-01)
Hydroxyapatite (HA) particles with enhanced antibacterial properties can be prepared by integrating metal ions into the crystal structure of the nanoparticles. Cobalt and silicate ions containing HA (Co/Si-HA) with the formula Ca10-xCox(PO4)6-y(SiO4)y(OH)2 (x = 0.2, 0.6, and 1.0 and y = 0.5) was successfully synthesised by using microwave-assisted wet precipitation method. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and inductively coupled...
Synthesis of opaque and colored hollow polymer pigments
Karakaya, Ekin; MAVİŞ, BORA; Gündüz, Güngör (2017-09-01)
A parametric study was carried out to investigate the effects of process parameters on the properties of opaque and/or colored polymer pigment. The core was synthesized using methyl methacrylate (MMA), methacrylic acid (MAA), and ethylene glycol dimethacrylate, and the shell from styrene. The surfactant/water (S/W) ratio was changed between 0.56 and 1.46, and the best ratio was determined to be 0.97. The increase in the amount of MAA and the pH of the medium increases the diameter of the swollen particles. ...
In situ DRIFTS characterization of wet-impregnated and sol-gel Pd/TiO 2 for NO reduction with CH4
Karakaş, Gürkan; Ozkan, Umit S. (Elsevier BV, 2002-05-01)
The adsorption/desorption behavior of 2%Pd/TiO2 catalysts synthesized by wet-impregnation and modified sol–gel techniques were examined in NO–CH4–O2 reaction using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The catalyst prepared by the modified sol–gel method showed significantly higher resistance toward oxygen while maintaining a 100% NO conversion. Under NO+CH4+O2 flow, the main adsorbed NO species was identified as the linearly adsorbed NO on metallic palladium (Pd0–NO)...
On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures
Kocaman, Serdar; Panoiu, Nicolae C.; Lu, Ming; Wong, Chee Wei (2012-02-15)
We demonstrate chip-scale flat-top filters at near-IR wavelengths using negative index photonic crystal based MachZehnder interferometers. Supported by full three-dimensional numerical simulations, we experimentally demonstrate a new approach for engineering high-pass, low-pass, bandpass, and band-reject filters, based on designing the photonic band diagram both within the bandgap frequency region and away from it. We further show that our approach can be used to design filters that have tunable multilevel ...
Preparation of 2D g-C3N4/TiO2 Heterojunction Nanocomposites for Photocatalytic Applications
Öztürk, Abdullah; Gündoğmuş, Pelin; Bouzıanı, Asmae; Erdoğan, Nursev (null; 2018-10-27)
In the present study, 2-dimensional (2D) graphite carbon nitride (g-C3N4)/titanium dioxide (TiO2) nanocomposites have been synthesized to enhance visible light photocatalytic activity of TiO2. Synthesis of nanocomposites was done in 2 steps. First, g-C3N4 was realized by heating the melamine (2,4,6- Triamino-1,3,5- triazine) in nitrogen atmosphere. Then, g-C3N4 powder was dissolved in deionized water. Titanium precursor (Titanium tetra isopropoxide) and nitrogen source (HNO3) were mixed and added into g-C3N...
Citation Formats
S. ÇALAMAK and M. Ermiş Şen, “In situ silver nanoparticle synthesis on 3D-printed polylactic acid scaffolds for biomedical applications,” JOURNAL OF MATERIALS RESEARCH, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: