graphene-like nanosheets synthesized by natural flaky

Graphene‐Based Antimicrobial Biomedical Surfaces

2020/11/27Graphene nanosheets synthesized by hydrothermal method in alkaline condition exhibited excellent antibacterial activity against E. coli, Salmonella typhimuirum (S. typhimuirum), Bacillus subtilis (B. subtilis), and Enterococcus faecalis (E. faecalis).

Synthesis, properties and applications of 2D non

2015/7/2The synthesized WSe 2 nanosheets display comparable photoluminescence (PL) properties to those fabricated by the 'Scotch-tape' method. Compared to binary 2DLM, ternary semiconductors with different band-gaps have been widely used in band-gap engineering, which also can be synthesized

2D nanostructures beyond graphene: preparation,

To this end, MnO 2 NSs were synthesized by mixing MnCl 2 4H 2 O and tetramethylammonium hydroxide and H 2 O 2 solution. 40 Chen and co-workers synthesized a series of ultrathin 2D MnO 2 nanosheets (M-NSs) using a "wet-chemical" synthesis method

Graphene‐Based Antimicrobial Biomedical Surfaces

2020/11/27Graphene nanosheets synthesized by hydrothermal method in alkaline condition exhibited excellent antibacterial activity against E. coli, Salmonella typhimuirum (S. typhimuirum), Bacillus subtilis (B. subtilis), and Enterococcus faecalis (E. faecalis).

Synthesis and characterisation of hydrophilic and

2009/4/1During the chemical reduction process, PSS was adsorbed to the surface of the as-reduced graphene oxide nanosheets and prevented nanosheets from agglomeration. As proposed by Ruoff and co-workers, we think that edge-to-face aromatic interactions between the graphene surface and the aromatic rings of the polymer might be primarily responsible for the polymer binding to the nanosheets.

ORIGINAL ARTICLE Open Access Graphene

Graphene-like nanosheets synthesized by natural flaky graphite in Shandong, China Chuan Xiu-Yun Abstract Natural flaky graphite in Shandong, China was purified by H 2O 2, a new patent method to produce graphite without sulfur and used as precursor to

Oxygen‐free Layer‐by‐Layer Assembly of Lithiated

2017/4/25A facile hydrogenation‐induced self‐assembly strategy to synthesize lithium hydride (LiH) nanosheets with a thickness of 2 nm that are uniformly distributed on graphene is reported and designed. Ta As illustrated in Figure 1, LiHG was first synthesized by a one‐step solvothermal reaction of butyllithium supported by graphene in cyclohexane under a hydrogen pressure of 50 atm.

Facile Synthesis of N

2017/12/27A series of N-doped carbon materials (NCs) were synthesized by using biomass citric acid and dicyandiamide as renewable raw materials via a facile one-step pyrolysis method. The characterization of microstructural features shows that the NCs samples are composed of few-layered graphene-like nanoflakes with controlled in situ N doping, which is attributed to the confined pyrolysis

Interconnected Graphene

Interconnected Graphene-like Nanosheets for Supercapacitors Feng Wei,Honghui Bi,Shuai Jiao,Xiaojun He*( ) School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization, Anhui University of Technology, Maanshan 243002, Anhui Province, P. R. China

Facile synthesis of core–shell structured Sigraphene balls

The graphene sheets are synthesized by an electrochemical exfoliation method from natural graphite. The resulting SiGra composite exhibits a unique core–shell structure, from which the ball-like morphology and the number of graphene layers in the SiGra composites are found to affect both the electric conductivity and ionic conductivity.

Facile Synthesis of N

2017/12/27A series of N-doped carbon materials (NCs) were synthesized by using biomass citric acid and dicyandiamide as renewable raw materials via a facile one-step pyrolysis method. The characterization of microstructural features shows that the NCs samples are composed of few-layered graphene-like nanoflakes with controlled in situ N doping, which is attributed to the confined pyrolysis

Selective preparation of graphene

In this paper we introduce facile methods to selectively produce graphene-like nanosheets and rope-like nanocarbons from camellia fruits which are natural bio-wastes. The graphene-like carbons were synthesized thourgh hydrothermal treatment of camellia fruits in a KOH aqueous solution and evaluated as electrode materials for supercapacitors.

Graphene and graphene

2015/9/24In addition to graphene, other 2D graphene-like nanosheets have also exhibited strong photoluminescence, such as g-C 3 N 4 and MoS 2. For example, g-C 3 N 4, which is synthesized via heat treatment of nitrogen-rich precursors, is composed of a high degree of condensation of the tri-s-triazine unit, which produces strong photoluminescence [ 36, 37 ].

Graphene

Natural flaky graphite in Shandong, China was purified by HSUB2/SUBOSUB2/SUB, a new patent method to produce graphite without sulfur and used as precursor to prepare exfoliated graphite through microwave irradiated expansion with some chemicals (such as hydrogen peroxide, nitric acid, and acetic acid). With the centrifugation process, graphene was synthesized by using an efficient

Green Synthesis of Graphene from Graphite in Molten

2019/12/19Green synthesis of graphene from graphite was carried out in molten salt mixture of LiCl-KCl, which is an environmentally friendly alternative to traditional methods using a large number of chemicals. The effect of carbonization temperature on the final properties of graphene products was investigated at a temperature range of 500-800#x00B0;C. The layer numbers of graphene products

Amino functionalization of graphene/graphene

2019/3/15Amine functionalization of graphene/graphene-like MoSe 2 (NH 2-rGO/MoSe 2) hybrid nanosheets were synthesized by a facile hydrothermal method. Then, as lubricant additives, the hybrids were doped into bismaleimide (BMI) matrix to reinforce the mechanical and tribological properties of

Synthesis and structural characterization of separate

2016/10/17Li et al [] synthesized GO from natural graphite using the modified Hummers' method and chemically converted graphene (CCG) using hydrazine and ammonia solution. On studying the surface charge at different pH values, the GO and CCG nanosheets showed strong negative charge in the aqueous dispersion due to the ionization of phenolic hydroxyl groups or carboxylic groups found on the synthesized

[Full text] Reduction of graphene oxide by resveratrol: a

Introduction Graphene oxide (GO) is a multipurpose, solution-processable next-generation candidate material for application in ultrathin electronics, optoelectronics, energy conversion, and storage technologies. 1–4 Graphene, a two-dimensional allotrope of carbon that displays an unusual honeycomb crystal structure, has received considerable attention in the field of nanoscience and

Synthesis of Ultrathin WS 2 Nanosheets and Their

2016/10/1For example, Tenne [33, 34] synthesized fullerene-like WS 2 nanomaterials using WO 3 and H 2 S as reactants at 850 C and proposed the outside-in sulfurization mechanism. Wu et al. [ 29, 30 ] prepared the WS 2 nanosheets using WO 3 and S as raw materials at 600 C and put forward a reaction mechanism of mechanical activation and exfoliation.

Antibacterial activity of graphene oxide nanosheet against

2020/7/15Morphologically, natural graphite powder has a flaky appearence (electronic supplementary material, figure S2a), which is due to the strong sp 2 carbon–carbon bonding. Contrariwise, the surface of GO exhibits carpet appearance as is seen in electronic supplementary material, figure S2b.

Characterisation of reduced graphene oxides prepared

2016/6/15- Abstract: The characterisation of reduced graphene oxides (rGOs) prepared from natural flaky, lumpy, and amorphous graphites using Hummers method was investigated. The prepared graphite oxides (GrOs) and rGOs were characterised by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, UV–vis spectroscopy, atomic force microscopy and

Large

2017/1/2Two-dimensional (2D) materials have attracted great attention by researchers due to their fascinating properties and promising applications. However, the synthesis methods for few layers are usually difficult to expand to large area applications because of their low yield. In this paper, graphene-like MoSe2 nanosheets are successfully and scaleable synthesized by a facile and low-cost

From graphite to porous graphene

2015/7/30Graphene nanosheets possess a promising potential as electrodes in Li-ion batteries (LIBs); consequently, the development of low-cost and high-productivity synthetic approaches is crucial. Herein, porous graphene-like nanosheets (PGSs) have been synthesized from expandable graphite (EG) by initially intercalating phosphoric acid, and then performing annealing to enlarge the interlayer

Synthesis of graphene

2010/3/1Graphene-like nanosheets have been synthesized by the reduction of a colloidal suspension of exfoliated graphite oxide. The morphology and structure of the graphene powder sample was studied using scanning electron microscopy, transmission electron microscopy, X

Chemically Exfoliated Graphene Nanosheets for

2018/11/5Graphene oxide (GO), produced by oxidation of graphite powder and exfoliation, is intensively utilized in electrodes, templates for hybrid materials, interfacial modifiers, three-dimensional structures, and so on, with its performance as an electrode material being determined by its chemical and structural states. This chapter describes the fabrication method of GO nanosheets from graphite

Characterisation of reduced graphene oxides prepared

2016/6/15- Abstract: The characterisation of reduced graphene oxides (rGOs) prepared from natural flaky, lumpy, and amorphous graphites using Hummers method was investigated. The prepared graphite oxides (GrOs) and rGOs were characterised by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, UV–vis spectroscopy, atomic force microscopy and

ORIGINAL ARTICLE Open Access Graphene

Graphene-like nanosheets synthesized by natural flaky graphite in Shandong, China Chuan Xiu-Yun Abstract Natural flaky graphite in Shandong, China was purified by H 2O 2, a new patent method to produce graphite without sulfur and used as precursor to

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