Facial Synthesis of Carrageenan/Reduced Graphene Oxide/Ag Composite as Efficient SERS Platform

Zheng, Yuhong; Wang, Aiwu; Zhong, Wang; Fu, Li; Peng, Feng

doi:10.1590/1980-5373-mr-2016-0287

Cited by 17 publications

(8 citation statements)

References 43 publications

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“…The Raman spectrums of Car and GO-Car are shown in Figure 5 . The G band at 1605 cm −1 is characteristic of graphitic carbon layers, corresponding to the tangential vibration of carbon atoms, while the D band at 1338 cm −1 indicates a defective graphitic carbon [ 31 ]. The intensity ratio of the D band and G band (ID/IG) was 1.02.…”

Section: Resultsmentioning

confidence: 99%

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High Performances of Artificial Nacre-Like Graphene Oxide-Carrageenan Bio-Nanocomposite Films

Zhu

Chen

et al. 2017

Materials

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This study was inspired by the unique multi-scale and multi-level ‘brick-and-mortar’ (B&M) structure of nacre layers. We prepared the B&M, environmentally-friendly graphene oxide-carrageenan (GO-Car) nanocomposite films using the following steps. A natural polyhydroxy polymer, carrageenan, was absorbed on the surface of monolayer GO nanosheets through hydrogen-bond interactions. Following this, a GO-Car hybridized film was produced through a natural drying process. We conducted structural characterization in addition to analyzing mechanical properties and cytotoxicity of the films. Scanning electron microscope (SEM) and X-ray diffraction (XRD) analyses showed that the nanocomposite films had a similar morphology and structure to nacre. Furthermore, the results from Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and Thermogravimetric (TG/DTG) were used to explain the GO-Car interaction. Analysis from static mechanical testers showed that GO-Car had enhanced Young’s modulus, maximum tensile strength and breaking elongation compared to pure GO. The GO-Car nanocomposite films, containing 5% wt. of Car, was able to reach a tensile strength of 117 MPa. The biocompatibility was demonstrated using a RAW264.7 cell test, with no significant alteration found in cellular morphology and cytotoxicity. The preparation process for GO-Car films is simple and requires little time, with GO-Car films also having favorable biocompatibility and mechanical properties. These advantages make GO-Car nanocomposite films promising materials in replacing traditional petroleum-based plastics and tissue engineering-oriented support materials.

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Section: Resultsmentioning

confidence: 99%

“…There was a loss of most of the oxygen-containing functional groups, hastening the weight decline. In GO-Car nanocomposite films, the oxygen-containing functional groups decomposed into CO and CO 2 [ 31 ]. When the temperature exceeded 200 °C, the polymer chain of carrageenan was destroyed.…”

Section: Resultsmentioning

confidence: 99%

High Performances of Artificial Nacre-Like Graphene Oxide-Carrageenan Bio-Nanocomposite Films

Zhu

Chen

et al. 2017

Materials

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“…Different approaches such as interlayer accumulation, chemical bonding, mussel-based chemistry, and hydrolysis have currently applied to modify the surface of several inorganic and organic materials. Zheng et al [182] described the production of carrageenan/reduced graphene oxide/Ag nanocomposites at room temperature. The compound provides robust and enhanced Raman scattering when using rhodamine B as the probe molecule.…”

Section: Carrageenan-based Hybrids With Graphene Oxide Nanoparticlesmentioning

confidence: 99%

Carrageenan‐Based Hybrids with Biopolymers and Nano‐Structured Materials for Biomimetic Applications

et al. 2022

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Carrageenan is an algal‐originated group of polysaccharides with unusual structural and functional capabilities, desired for different biomimetic applications due to their renewable, biocompatible, and biodegradable nature. Carrageenan‐based hybrids (nano‐/biocomposites) with different biopolymers and nano‐structured materials have been widely reported as potential candidates for bone/cartilage tissue engineering, delivery of drugs/bioactive ingredients, wound healing, and 3D bioprinting applications. Owning to the broad‐scale biomimetic applications of carrageenan‐based materials, this review aims to summarize carrageenan chemistry and distinct physicochemical features of biopolymeric and/or nanostructured materials‐based on carrageenans in a detailed manner. Herein, different biopolymers (such as chitosan, cellulose, starch, and alginates), and nano‐structured materials (such as silica nanoparticles, magnetic/non‐magnetic nanocarriers, graphene oxide nanoparticles, carbon nanotubes/nanorods, metal oxide nanoparticles) are comprehensively described in combination with carrageenan. However, carrageenan toxicity studies have presented major challenges that need to be addressed when using carrageenan‐based materials for biomedical and therapeutic purposes. Several existing challenges, prospects, and research recommendations are described at the end of this review.

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“…The sharp edges of the rGO sheets may cut cell walls and kill bacteria [ 26 , 27 ]. Another advantage of rGO is that its high surface area has a high adsorption capacity for other compounds, which can act against bacteria and give rise to novel combinatorial properties after mixing [ 27 , 28 , 29 , 30 , 31 ]. Amongst these compounds, silver nanoparticles (AgNPs) are very attractive due to their high antibacterial activity against a broad spectrum of bacteria and low bacterial resistance [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Fighting Antibiotic-Resistant Bacterial Infections by Surface Biofunctionalization of 3D-Printed Porous Titanium Implants with Reduced Graphene Oxide and Silver Nanoparticles

San

Paresoglou

Minneboo

et al. 2022

IJMS

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Nanoparticles (NPs) have high multifunctional potential to simultaneously enhance implant osseointegration and prevent infections caused by antibiotic-resistant bacteria. Here, we present the first report on using plasma electrolytic oxidation (PEO) to incorporate different combinations of reduced graphene oxide (rGO) and silver (Ag) NPs on additively manufactured geometrically ordered volume-porous titanium implants. The rGO nanosheets were mainly embedded parallel with the PEO surfaces. However, the formation of ‘nano-knife’ structures (particles embedded perpendicularly to the implant surfaces) was also found around the pores of the PEO layers. Enhanced in vitro antibacterial activity against methicillin-resistant Staphylococcus aureus was observed for the rGO+Ag-containing surfaces compared to the PEO surfaces prepared only with AgNPs. This was caused by a significant improvement in the generation of reactive oxygen species, higher levels of Ag+ release, and the presence of rGO ‘nano-knife’ structures. In addition, the implants developed in this study stimulated the metabolic activity and osteogenic differentiation of MC3T3-E1 preosteoblast cells compared to the PEO surfaces without nanoparticles. Therefore, the PEO titanium surfaces incorporating controlled levels of rGO+Ag nanoparticles have high clinical potential as multifunctional surfaces for 3D-printed orthopaedic implants.

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Facial Synthesis of Carrageenan/Reduced Graphene Oxide/Ag Composite as Efficient SERS Platform

Cited by 17 publications

References 43 publications

High Performances of Artificial Nacre-Like Graphene Oxide-Carrageenan Bio-Nanocomposite Films

High Performances of Artificial Nacre-Like Graphene Oxide-Carrageenan Bio-Nanocomposite Films

Carrageenan‐Based Hybrids with Biopolymers and Nano‐Structured Materials for Biomimetic Applications

Fighting Antibiotic-Resistant Bacterial Infections by Surface Biofunctionalization of 3D-Printed Porous Titanium Implants with Reduced Graphene Oxide and Silver Nanoparticles

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