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[PDF] Graphene oxide cross-linked chitosan …

2021-1-1 · Abstract Graphene oxide (GO) cross-linked chitosan (CS) nanocomposite membrane is firstly reported in this study. At elevated temperatures, the cross-linking reaction between amino groups of CS and epoxy groups of GO happens which significantly affects the properties of membranes. The physicochemical properties of nanocomposite membranes have been examined by various methods …

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Graphene Oxide-Based Biosensors | IntechOpen

2018-1-23 · The graphene oxide, chitosan, and GOD are directly electrodeposited onto a glassy carbon electrode (GCE) by using electrochemical reduction under controlled direct electrical potential. This direct electro-deposition process is rapid (several minutes) and can produce uniform, controllable and reproducible films. ...

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[PDF] Graphene oxide cross-linked chitosan …

2021-1-1 · Abstract Graphene oxide (GO) cross-linked chitosan (CS) nanocomposite membrane is firstly reported in this study. At elevated temperatures, the cross-linking reaction between amino groups of CS and epoxy groups of GO happens which significantly affects the properties of membranes. The physicochemical properties of nanocomposite membranes have been examined by various methods …

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Electrodeposition of reduced graphene oxide with …

Graphene has attracted tremendous attention due to its large surface area, excellent mechanical strength, high electronic conductivity and good adsorption capacity .Graphene has a diverse range of applications in solar cells, hydrogen storage materials, electroluminescent devices and electrode materials .In particular, graphene or reduced graphene oxide (rGO) and biopolymer (e.g., gellan gum ...

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Graphene Oxide/Copper Nanoderivatives-Modified …

Materials and Methods Synthesis of Graphene Oxide/Copper (GO/Cu) Nanocomposites. Graphene oxide (GO) was synthesized by the modified Hummer method from flake graphite (Aladdin, Shanghai, China) in accordance with the previously reported protocol. 33 Then, a GO suspension (2 mg/mL, 100 mL) was prepared using an ultrasonic bath (SB-5200DT, SCIENTZ, Ningbo, China).

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A study on the viscoelastic behavior of chitosan …

2020-10-16 · The nanocomposites of Chitosan (CS)-poly vinyl alcohol (PVA) reinforced with graphene oxide (GO) were fabricated by casting in a mold. The nanocomposite films were characterized by …

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Reduced graphene oxide-chitosan flexible …

Reduced graphene oxide has strong absorption in the near-infrared (NIR) region, while chitosan has the ability to bind bacteria through electrostatic interactions. The K/rGO-CS device proved to capture and efficiently eradicate both planktonic Gram-positive Staphylococcus aureus ( S. aureus ) and Gram-negative Escherichia coli ( E. coli ...

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Reduced graphene oxide-chitosan flexible …

Reduced graphene oxide has strong absorption in the near-infrared (NIR) region, while chitosan has the ability to bind bacteria through electrostatic interactions. The K/rGO-CS device proved to capture and efficiently eradicate both planktonic Gram-positive Staphylococcus aureus ( S. aureus ) and Gram-negative Escherichia coli ( E. coli ...

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Chitosan/graphene oxide biocomposite film from …

2018-3-1 · Graphene Oxide (GO) has been succesfully synthesized using Hummber method from graphite powder of pencil rod. The excellent solubility of graphene oxide (GO)in water imparts its feasibilty as new filler for reinforcement hydrophilic biopolymers. In this research, the biocomposite film was fabricated from chitosan/graphene oxide.

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Preparation of Modified Magnetic Nano-Fe3O4 …

The XRD pattern of the magnetic nano-Fe 3 O 4-encapsulated-chitosan/graphene oxide synthesized in aqueous solution is shown in Fig. 2.The position and intensities of the observed diffraction peaks were compared with the diffraction pattern of standard particles 26.The presence of sharp peaks (25.87°, 30.10°and 43.01°) indicates the highly crystalline nature of the magnetic nano-Fe 3 O 4 ...

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(PDF) Well-Dispersed Chitosan/Graphene Oxide ...

Well-Dispersed Chitosan/Graphene Oxide Nanocomposites ARTICLE Xiaoming Yang,†,‡ Yingfeng Tu,† Liang Li,*,§,‡ Songmin Shang,*,‡ and Xiao-ming Tao‡ College of Chemistry, Chemical Engineering and Materials Sciences, Soochow University, Suzhou 215123, China, Key Laboratory for Green Chemical Process of Ministry of Education, School of Materials Science and Engineering, Wuhan Institute ...

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Preparation and adsorption capacity evaluation of …

Graphene oxide (GO)-chitosan composite hydrogels were successfully prepared via the self-assembly of chitosan molecules and GO. These as-prepared hydrogels were characterized by different techniques. The morphology of the internal network structure of the nanocomposite hydrogels was investigated. The adsorption capacity results demonstrate that the prepared GO-based composite hydrogels can ...

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Realizing small-flake graphene oxide membranes for ...

Membranes for organic solvent nanofiltration (OSN) or solvent-resistant nanofiltration (SRNF) offer unprecedented opportunities for highly efficient and cost-competitive solvent recovery in the pharmaceutical industry. Here, we describe small-flake graphene oxide (SFGO) membranes for high-performance OSN applications. Our strategy exploits lateral dimension control to engineer shorter and …

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Fabrication of chitosan/graphene oxide polymer …

Fabrication of chitosan/graphene oxide polymer nanofiber and its biocompatibility for cartilage tissue enginee ring. Lei Cao Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, China.

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Synthesis of graphene oxide nanoribbons/chitosan …

Synthesis of graphene oxide nanoribbons/chitosan composite membranes for the removal of uranium from aqueous solutions Xuewen Hu 3 , Yun Wang 1, 3 ( ), Jinbo Ou Yang 2 , Yang Li 3 , Peng Wu 3 , Hengju Zhang 3 , Dingzhong Yuan 1, 2 , Yan Liu 1, 2 , Zhenyu Wu 4 , Zhirong Liu 1

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Interaction of microcrystalline chitosan with graphene ...

2019-4-19 · Thanks to its specific chemical and physical properties, graphene has aroused growing interest in many fields of Science and Technology. The present study focuses on the properties of microcrystalline chitosan (MCCh): a compound known to increase the biocompatibility of various matrices, including those made of graphene layers, enabling the controlled release of molecules of …

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Interaction of microcrystalline chitosan with graphene ...

2019-4-19 · Thanks to its specific chemical and physical properties, graphene has aroused growing interest in many fields of Science and Technology. The present study focuses on the properties of microcrystalline chitosan (MCCh): a compound known to increase the biocompatibility of various matrices, including those made of graphene layers, enabling the controlled release of molecules of …

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Graphene Oxide-Based Biosensors | IntechOpen

2018-1-23 · The graphene oxide, chitosan, and GOD are directly electrodeposited onto a glassy carbon electrode (GCE) by using electrochemical reduction under controlled direct electrical potential. This direct electro-deposition process is rapid (several minutes) and can produce uniform, controllable and reproducible films. ...

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Development of Nateglinide Loaded Graphene Oxide …

2020-8-23 · Keywords:Graphene oxide, chitosan, nateglinide, nanocomposites, drug release, box behnken design. Abstract: Background: Nateglinide is an antidiabetic drug having biological half-life 1.5 h which shows a concise effect. Graphene oxide along with chitosan can be used as a nanocarrier for sustained release of Nateglinide.

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Graphene Oxide/Copper Nanoderivatives-Modified …

Materials and Methods Synthesis of Graphene Oxide/Copper (GO/Cu) Nanocomposites. Graphene oxide (GO) was synthesized by the modified Hummer method from flake graphite (Aladdin, Shanghai, China) in accordance with the previously reported protocol. 33 Then, a GO suspension (2 mg/mL, 100 mL) was prepared using an ultrasonic bath (SB-5200DT, SCIENTZ, Ningbo, China).

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Bifunctional Sharkskin Mimicked Chitosan/Graphene …

Bifunctional Sharkskin Mimicked Chitosan/Graphene Oxide Membranes: Reduced Biofilm Formation and Improved Cytocompatibility Sabra Rostami, Fatih Puza, Meltem Ucak, Erdogan Ozgur, Ozgur Gul, Utku Kursat Ercan, Bora Garipcan

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Frontiers | Preparation and Characterization of …

Thermal-sensitive hydrogel based on chitosan (CS) and β-glycerophosphate (GP) has shown good biocompatibility and biodegradability. But the application of such hydrogel is limited due to its poor mechanical property. Recently, graphene oxide(GO) is widely used as a reinforcement agent to prepare nanocomposites with different polymers for improving the properties of the materials.