Graphene oxide nanotechnology 3. Jan 17, 2023 · The earliest synthesis of graphene oxide (GO) was achieved by chemist B. The metal oxide can efficiently bind metal ions, so the higher adsorption capacity of a metal oxide/graphene composite is observed compared to graphene. In this review, we discuss the hybrid nanomaterials based on graphene oxide (GO) and nanoparticles (NPs). We review the synthesis, properties, and applications of immobilized transition metal oxide (TMO) NPs on graphene/GO. Jan 1, 2020 · Diverse types of GR such as fullerenes, nanotubes, graphene oxide/graphite oxide/graphitic oxide (GO) alternatively called as graphitic acid, a hundred year old stuff is subject matter of great interest. The synthesis, properties, and applications of graphene oxide/gold nanocomposites were emphasized. Also, GO is characterized by various physicochemical properties, including nanoscale size, high surface area, and electrical charge. 73 pM: Kasturi et al. ACS Nano 4, 4806–4814 (2010). However, their use in ion sieving and desalination technologies is limited Sep 1, 2015 · GO is a monolayer of graphite oxide, which can be obtained by exfoliating graphite oxide into layered sheets through sonicating or mechanical stirring [1]. Sep 28, 2022 · Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. 2. More recently Xiong et al 105 used biodegradable PEGylated NGO conjugates (nano graphene oxide disulfide linked PEG) with cleavable disulfide bonds for the photothermal therapy of A549 cells. They have substituted the sodium nitrate with phosphoric acid in a mixture of H 2 SO 4 /H 3 PO 4 (9 : 1) and increased KMnO 4. In 1859, an Oxford chemist Brodie [6] prepared this material by treating graphite with a mixture of potassium chlorate and fuming nitric acid Jan 1, 2019 · Graphene grabs wide attention in the scientific community as a promising younger member owing to its featured and specific properties for distinct and exciting applications in the field of advanced nanotechnology among many nanomaterials like nanoclay, nano metal oxide, and carbon nanotube. It is further used for biofunctionalization of Graphene-based materials could be divided into four categories: single-layer graphene, few-layered graphene, graphene oxide (GO) and reduced graphene oxide (rGO) (Bei et al. The graphene-based lattice and existence of various oxygen-containing groups (mainly epoxy and hydroxyl groups) enable GO abundant fascinating properties. The biomedical applications of graphene and its composite include its use in gene and small molecular drug delivery. Aug 1, 2022 · A lot of emphases has been paid to the highly effective removal of U(VI). Jun 10, 2021 · Graphene oxide (GO), an oxidized derivative of graphene, is currently used in biotechnology and medicine for cancer treatment, drug delivery, and cellular imaging. The super-paramagnetic property of GO based nanomaterials can be explained using Abstract. Jan 23, 2023 · Graphene-based nanomaterials have attracted remarkable attention during the last decade in nanotechnology. Brodie at the University of Oxford, in 1859 4 — over a century before the discovery of modern carbon materials such as Oct 3, 2019 · Marcano, D. Improved synthesis of graphene oxide. Graphene oxide (GO), an oxidized derivative of graphene, is currently used in biotechnology and medicine for cancer treatment, drug delivery, and cellular imaging. (2019). , 2019). CAS Google Scholar 2. Sep 15, 2019 · Determining the possible placement of graphene oxide nano-sheets in the electrospun fibre mats is the main goal of this work. The 2D allotropic structure allows it to be used in various biological fields. We present the TMO NPs immobilizing methods on graphene/GO using Mar 1, 2019 · Graphene oxide quantum dots as the support for the synthesis of gold nanoparticles and their applications as new catalysts for the decomposition of composite solid propellants ACS Omega , 3 ( 7 ) ( 2018 ) , pp. , graphene nanoplatelets: Urea: LOD of 0. By in-situ polymerization of acrylonitrile on magnetic graphene oxide (mGO) modified with PEA, the polyamidoxime/poly ethyleneimine magnetic graphene oxide (mGO-PP) adsorbent was prepared successfully by Dai et al. Two-dimensional self-assembled heterostructures of graphene oxide and polyamine macromolecules are used to create Jun 7, 2018 · Abstract Graphene- and graphene oxide-based nanomaterials have gained broad interests in research because of their unique physiochemical properties. The overview of graphene oxide/Au nanoparticles was first presented in this work. Graphene, graphene oxide, and reduced graphene oxide have been widely considered as promising candidates for industrial and biomedical applications due to their exceptionally high mechanical stiffness and strength, excellent electrical conductivity, high optical transparency, and good biocompatibility. C. After the discovery of graphene, researchers worldwide started to focus on GO and other derivatives. These properties can be altered, as GO can be readily functionalized. 2. Diagram of GO preparation. It has been reported [53–55] that the C1s signal of graphene oxide consists of five different chemical components that can be attributed to sp 2 carbon atoms (284. In the current study, an in-depth investigation for the understanding of the SARS-CoV-2 inactivation route using graphene The nanosheets of graphene or GO can act as not only “support” for the growth of oxide nanoparticles, but also “spacer” for the inhibition of nanoparticles aggregation. Since Feb 10, 2025 · Read the latest Research articles in Graphene from Nature Nanotechnology. Dec 30, 2020 · The XPS method unambiguously reveals the nature of carbon and oxygen bonds in their different states: unoxidized carbon atoms (sp 2 carbon), C–O–C, C=O, and COOH. Nanoparticles exposures were performed in a Jan 22, 2025 · If the reader performs a quick online search, they may find that graphene oxide is also commonly understood as graphite oxide─previously known as “graphitic oxide”─and is frequently described in nonacademic contexts as “a compound composed of carbon, oxygen, and hydrogen in variable ratios, produced by treating graphite with strong oxidizing agents and acids to eliminate extraneous Apr 1, 2025 · The graphene oxide (GO) nanoparticles have garnered considerable interest due to their planar construction in two dimensions, remarkable photosensitivity, remarkable chemical and mechanical durability, extraordinary conductivity, large surface area, and favourable biocompatibility when used in cancer treatment. 1 Graphene oxide. Due to the versatile surface functionalization, ultra-high surface area, and excellent biocompatibility of graphene oxide-based nanomaterials, which hold better promise for potential applications Jan 1, 2022 · Reduced-graphene oxide/gold nanoparticles: Detect- mi RNA-122 (biomarker) LOD-1. , The nanocomposite of graphene nanoplatelets with graphitized nanodiamond: Electrochemical detection of urea: LOD of 5 μg/mL: Kumar et al. et al. 1 mg mL −1: Kumar et al. Jul 20, 2021 · This review focused on the graphene oxide-gold nanocomposite which is an outstanding composite material for different applications. , Graphene quantum-dots Feb 24, 2018 · Graphene oxide nanoparticles (GONPs) have attracted a lot of attention due to their many applications. 7278 - 7287 Mar 12, 2021 · Selective growth of nanoporous metal–organic framework nanocrystals in the stacking defects of graphene oxide layers improves the mechanical integrity and water–solute selectivity of graphene Jul 12, 2021 · Background In the last decade, graphene oxide-based nanomaterials, such as graphene oxide (GO) and reduced graphene oxide (rGO), have attracted more and more attention in the field of biomedicine. When there is a reduction in size of graphene oxide based nanocomposites to nano-scale, the material usually exhibited super-paramagnetic behaviour (He, 2018). In this study, … Graphene has emerged as one of the most promising nanomaterials because of its unique combination of exceptional properties: it is not only the thinnest but also one of the strongest materials; it conducts heat better than all other materials; it is an excellent conductor of electricity; it is optically transparent, yet so dense that it is impermeable to gases – not even helium, the smallest Dec 1, 2022 · Graphene oxide has a magnetic characteristic that can be evaluated via the magnetic measurement system. Brodie synthesized the GO in 1859 by reacting graphite with KClO3 in the presence of fuming HNO3; the reaction took 3–4 days to complete at 333 K. However, few studies have investigated the effects of these nanoparticles on the immune system. Tour Method. 86 eV Lerf–Klinowski model of graphene oxide. Apr 3, 2017 · Graphene oxide membranes show exceptional molecular permeation properties, with promise for many applications 1,2,3,4,5. Owing to perfect physical properties, well electrical conductivity, and excellent biocompatibility, graphene and its derivative have attracted much attention in the Oct 14, 2021 · The rapid transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-driven infection signifies an ultimate challenge to global health, and the development of effective strategies for preventing and/or mitigating its effects are of the utmost importance. 5 eV) and carbon atoms bonded to hydroxyl (C–OH, 285. Graphene and GO have become one of the most attractive materials for the following reasons: (1) large surface area; (2) lightweight; (3) high strength and electrical conductivity; (4) the capacity of optical property-expressing plasmon, fluorescence, and nonlinear emission. The characterisation methods employed include SEM, AFM micrographs, tensile modulus and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR). Feb 16, 2024 · Graphene oxide nanomaterials are being developed for wide-ranging applications but are associated with potential safety concerns for human health. The Tour group proposed improving the Hummers method at the University of Rice in 2010 []. Graphene oxide (GO) is a two-dimensional material obtained from the oxidative exfoliation of graphite. Nano graphene oxide disulfide linked PEG showed a higher efficacy for A549 cells than the control. In 2006, Szábó and Dékány examined previous models by a number of analyses and suggested a model without carboxylic acids composed of two main regions: corrugated hexane ribbons occupied with quinones and ketones, and translinked cyclohexane chairs Mar 29, 2009 · Graphene modified with titanium dioxide nanoparticles has also been studied 57; ultraviolet irradiation of this TiO 2 /graphene oxide hybrid in ethanol was used to reduce the graphene oxide sheets . These applications include batteries, super capacitors, drug delivery and biosensing. eckqcgd qpnjd iftite yhyywy zsww taht lylfohe lwlrfek oofdoi bfsle mmksc yxak qau qwbux nmt