One-step biosynthesis of hybrid reduced graphene oxide/iron-based nanoparticles by eucalyptus extract and its removal of dye

Weng, Xiulan; Lin, Ze; Xiao, Xiaofeng; Li, Chengyang; Chen, Zuliang

doi:10.1016/j.jclepro.2018.08.158

Cited by 42 publications

(8 citation statements)

References 32 publications

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“…The C1s XPS spectra of GO in Fig. 5a showed four peaks centered at 288.6, 287.2, 285.9, and 284.7 eV, corresponding to -COO-, C=O, C-O, and C-C groups in GO [41]. C-C bond corresponds to the chemical bond form which by the carbon atom of the GO carbon skeleton sp 2 .…”

Section: Synthesis and Characterization Of Go/nhap Nanostructuresmentioning

confidence: 99%

Investigation on physicochemical properties of graphene oxide/nano-hydroxyapatite composites and its biomedical applications

Yang

Liu

et al. 2021

J Aust Ceram Soc

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Graphene oxide/nano-hydroxyapatite (GO/nHAP) composites were synthesized by simultaneous titration method. The GO powder was uniformly dispersed ultrasonically in a solution containing Ca(NO3)2. It was co-titrated with (NH4)2HPO4, during which NH3·H2O was used to maintain pH of about 10. Transmission electron microscopy (TEM) showed that HAP had a drusy acicular crystal structure with 100–200 nm length in the composite. The Ca2+ ions were attracted by the negatively charged oxygen functional groups present on GO sheets. They also oriented the growth of hydroxyapatite preferentially along (112) plane, which was also consistent with X-ray diffractometry (XRD) results. According to X-ray photoelectron spectroscopic (XPS) results, the peak intensities of the C–O and C–C groups increased in the GO/nHAP composite. However, the number of –COO– and C–O–C groups was reduced as well as the position of peaks shifted due to electrostatic interactions. These results were also corroborated with Fourier transform infrared spectroscopy (FTIR). MTT assay indicated that GO/nHAP composites had a significant effect on proliferation of 293T cells and good biomimetic mineralization as shown by in vitro bioactivity assays. EDS spectroscopy confirmed that the Ca/P ratio in calcium phosphate deposits was 1.62, which was close to the ratio of 1.64 in natural bone. The biological performance of GO/nHAP composite proved it to be a promising candidate for bone regeneration and implantation.

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Section: Synthesis and Characterization Of Go/nhap Nanostructuresmentioning

confidence: 99%

Investigation on physicochemical properties of graphene oxide/nano-hydroxyapatite composites and its biomedical applications

Yang

Liu

et al. 2021

J Aust Ceram Soc

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“…Wang et al [100] also worked on the synthesis of iron nanoparticles by extracts of Eucalyptus, applying them in the removal of nitrate ions from swine wastewater. Weng et al [205] reported the synthesis of a hybrid material formed by iron and reduced graphene oxide nanoparticles, synthesized from extracts of Eucalyptus. This hybrid nanomaterial was successfully used for the removal of methylene blue.…”

Section: Applications Of Nanoparticlesmentioning

confidence: 99%

Eucalyptusextracts-mediated synthesis of metallic and metal oxide nanoparticles: current status and perspectives

Salgado

Mártire

Vidal

2019

Mater. Res. Express

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In recent decades, nanotechnology has received great attention due to its broad fields of application. The conventional processes applied to the synthesis processes of nanomaterials can be classified in chemical and physical methods. These technologies involve several environmental and cost problems. In order to avoid the problems caused by conventional methods, the use of biological systems such as bacteria, fungi, yeasts, and algae in the synthesis of nanomaterials has recently received extensive attention. To the same purpose, the routes of synthesis of metallic and metal oxides nanoparticles using plant extracts show promising perspectives. The methods involving plant extracts, unlike other biological methods, stand out for their ease and low implementation costs. In addition, the use of plant extracts avoids the risks associated with the use of highly toxic compounds, which are harmful to human health and the environment. This review summarizes the relevance of using plant extracts in the synthesis of metal and metal oxides nanoparticles compared to other synthesis methods and emphasizes the use of extracts of different species of Eucalyptus. The main topics covered by this review include (i) the effect of the synthesis parameters on the features of the nanomaterials; (ii) the effect of the composition of the extracts on the synthesis; (iii) the main mechanisms proposed to explain the formation of the nanoparticles; and (iv) future challenges related to the green synthesis of nanoparticles.

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“…Moreover, the calculated I D / I G ratios for all samples are >1. Such a low intensity of 2D bands and a high intensity of D bands are common for highly disordered, defected, or functionalized G structures, synthesized using several methods involving the reduction of GO or by different types of graphite exfoliation techniques. − …”

Section: Resultsmentioning

confidence: 99%

Graphene@Metal Nanocomposites by Solution Combustion Synthesis

et al. 2020

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Graphene (G) and metal-decorated G nanocomposites are among the most promising materials for a wide variety of practical applications, and, therefore, the development of fast and reliable methods for nanocomposite synthesis is an important task. Herein we report the new fast approach for solution combustion synthesis (SCS) of large-area G−metallic nanocomposites in an air atmosphere. The G-based nanocomposites were obtained by a SCS using copper and nickel nitrates, as well as their stoichiometric mixture as the metal source and citric acid as a fuel and carbon source. The G structures started on the catalytic surface of freshly synthesized metallic nanograins during the combustion process and formed large-area freestanding films due to the high-energy and fast synthesis process. We proposed a mechanism of formation of the G-based nanocomposites. The phase compositions, structural features, and magnetization behavior of G@Cu, G@Ni, and G@CuNi nanocomposites are carefully studied and described. G@metal nanocomposites were studied as a material for the creation of a highly effective sensing element of semiconductor gas sensors.

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One-step biosynthesis of hybrid reduced graphene oxide/iron-based nanoparticles by eucalyptus extract and its removal of dye

Cited by 42 publications

References 32 publications

Investigation on physicochemical properties of graphene oxide/nano-hydroxyapatite composites and its biomedical applications

Investigation on physicochemical properties of graphene oxide/nano-hydroxyapatite composites and its biomedical applications

Eucalyptusextracts-mediated synthesis of metallic and metal oxide nanoparticles: current status and perspectives

Graphene@Metal Nanocomposites by Solution Combustion Synthesis

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