A new green approach for the reduction of graphene oxide nanosheets using caffeine

Vu, Thu Ha Thi; Tran, Thanh T.; Le, Hong Ngan Thi; Nguyen, Phuong Hoa Thi; Bui, Ngoc Quynh; Essayem, N.

doi:10.1007/s12034-015-0896-x

Cited by 50 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GO is an oxidized version of graphene, having a broad range of oxygen functional groups such as carboxyl, hydroxyl, epoxy, and keto groups on its surface. , GO can be produced through chemical oxidation of graphite which is followed by successive exfoliation in water or organic solvents. , The synthetic recipe of GO formulates it as an electrochemical amalgam of both conductive π states from sp 2 carbon sites and the nonconducting σ states of its sp 3 bonded oxidized carbons . The presence of these oxygen functionalities make GO hydrophilic and insulating in nature. , Besides, GO also holds good colloidal conditions, , high surface area, enchanting mechanical properties, − and remarkable optoelectronic hallmarks , and is easily processable due to its inherent structural attributes, although there are some obstructions in GO such as structural defects and poor electrical conductivity which can be restored through chemical, electrochemical, thermal, and green reduction. − …”

Section: Introductionmentioning

confidence: 99%

Study of Graphene Oxide Structural Features for Catalytic, Antibacterial, Gas Sensing, and Metals Decontamination Environmental Applications

Sajjad

Leghari

Iqbal

2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

This study represents a comprehensive review about the structural features of graphene oxide (GO) and its significance in environmental applications. Two dimensional (2D) GO is tremendously focused in advanced carbon-based nanomaterials for environmental applications due to its tunable physicochemical characteristics. Herein, we report foundational structural models of GO and explore the chemical bonding of oxygen moieties, with graphite basal plane using various characterization tools. Moreover, the impact of these oxygen moieties and the morphology of GO for environmental applications such as removal of metal ions and catalytic, antibacterial, and gas sensing abilities have here been critically reviewed for the first time. Environmental applications of GO are highly significant because, in the recent era, the fast progress of industries, even in the countryside, results in air and water pollution. GO has been widely investigated by researchers to eradicate such environmental issues and for potential industrial and clinical applications due to its 2D structural features, large surface area, presence of oxygen moieties, nonconductive nature, intense mechanical strength, excellent water dispersibility, and tunable optoelectronic properties. Thence, particular emphasis is directed toward the modification of GO by varying the number of its oxygen functional groups and by coupling it with other exotic nanomaterials to induce unique properties in GO for potential environmental remediation purposes.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of Graphene Oxide Structural Features for Catalytic, Antibacterial, Gas Sensing, and Metals Decontamination Environmental Applications

Sajjad

Leghari

Iqbal

2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…With more disorder within the micro structure, the intensity of D band will be higher. The higher the ratio of the D band intensity to the G band intensity is, the worse the quality of generated graphene will be [163]. Figure 21 [164] shows the comparison of Raman spectrum of graphite, GO and rGO.…”

Section: Raman Testmentioning

confidence: 99%

“…The value of 2θ angle (diffraction angle) of characteristic peak shows the type of content and the intensity of peak represents the level of contents. Figure 23 [163],…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

The processing and analysis of graphene and the strength enhancement effect of graphene-based filler materials: A review

Shen

Oyadiji

2020

Materials Today Physics

View full text Add to dashboard Cite

This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

“…Graphene is one of the most sought after nanoparticles and it has been dubbed a 'miracle materials' due to its extraordinary physical and chemical properties [1] . Graphene is a hexagonal crystalline single layer of graphite with a C-C bond with distance of 0.142 nm.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, if its escape into the disposal waste system, it will create a detrimental environmental issue and also present a health hazard [18][19][20]. Owing to its harmful nature, the quest for a more environmentally friendly reductant is on demand [1].…”

Section: Introductionmentioning

confidence: 99%

The Biogenic Synthesis of Reduced Graphene Oxide using Hibiscus sabdariffa L. as Natural Precursor

Albert¹,

Tan²,

Teh³

et al. 2021

Preprint

View full text Add to dashboard Cite

Owing to their extraordinary properties, carbon-based nanomaterials are gaining traction in biomedicine. Green synthesis is the cost-effective method for fabricating carbon-based nanomaterials due to its rapidity, renewable nature, and sustainability. This study emphasis on the graphene oxide (GO) reduction using a simple one-pot technique that does not require the use of toxic reducing agents. This article reports the green synthesis of reduced graphene oxide (RGO) using Hibiscus sabdariffa L. calyxes extract as the natural reducing agent. Additionally, this article also provides analysis RGO using X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis), and Raman spectroscopy. XRD result showed that the GO peak at 11o diminished, and a new hump appear at 22o indicating that the GO is fully reduced when it is refluxed for 6 hours, at 100oC with 1:3 ratio of GO:PE. The UV-Vis data indicated absorption peak of GO (237 nm) and RGO (265 nm) at distinct locations. This finding shed new light on the enormous potential of Hibiscus sabdariffa L. calyxes extract for green GO reduction. As a result, this environmentally friendly method can help reduce dependence on chemical materials.

show abstract

A new green approach for the reduction of graphene oxide nanosheets using caffeine

Cited by 50 publications

References 28 publications

Study of Graphene Oxide Structural Features for Catalytic, Antibacterial, Gas Sensing, and Metals Decontamination Environmental Applications

Study of Graphene Oxide Structural Features for Catalytic, Antibacterial, Gas Sensing, and Metals Decontamination Environmental Applications

The processing and analysis of graphene and the strength enhancement effect of graphene-based filler materials: A review

The Biogenic Synthesis of Reduced Graphene Oxide using Hibiscus sabdariffa L. as Natural Precursor

Contact Info

Product

Resources

About