An Environmentally Benign Green Approach for the Reduction of Graphene Oxide by Apple Extract: Spectroscopic and Thermal Interpretation

Mitra, Suman; Bose, Saswata; Rahaman, Mehabub

doi:10.1007/978-981-15-7409-2_37

Cited by 2 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GO was subjected to high-temperature cleavage to produce graphene [23]. This GO thermal separation method is a novelty in comparison with the previous studies that mainly employed traditional chemical reduction methods using reducing agents like sodium borohydride or hydrazine hydrate [24,25]. The method can quickly and efficiently produce graphene in large quantities while being cost-effective and environmentally friendly since it does not use any solvents or reducing chemicals [26,27].…”

Section: Introductionmentioning

confidence: 99%

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Le,

Nguyen,

Tran

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

This paper presents the preparation of a modified polyvinylpyrrolidone (PVP)/graphene mixture and evaluates its adsorption capacity for heavy metal ions in water. Graphene with a high specific surface area of about 362 m2 g−1 was obtained through the thermal separation of graphite oxide (GO), which had been synthesised from graphite by the Hummer method. The graphene-PVP blend was prepared by dispersing the graphene into a PVP solution and then crosslinking it to prevent washout by water. This crosslinking ensured a well-dispersed and stable graphene-PVP blend. The maximum adsorption capacity of graphene-PVP for Cu2+ and Cd2+ ions was found to be 158 mg g−1 and 134 mg g−1, respectively, at pH 3 and a contact time of 30 min. The experimental results were found to be consistent with Langmuir and pseudo-second-order kinetic models. The study further reveals that the adsorption mechanism of Cu2+ and Cd2+ ions on graphene-PVP follows an ion exchange mechanism, driven by strong interactions between PVP and metal ions. The study provides an easy, low-cost, and eco-friendly method to produce highly adsorptive graphene-PVP materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Le,

Nguyen,

Tran

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

show abstract

Ag+ colorimetric sensor based on graphene oxide/nano-platinum composite

Qu,

Yakub,

Baini

et al. 2023

J Anal Sci Technol

View full text Add to dashboard Cite

With the development of society, pollution accidents occur more frequently, and the effects of toxic substances containing silver on human health and environment are increasingly extensive. Therefore, the real-time on-site monitoring of silver ions is urgently needed. Based on the catalase-like properties of graphene/nano-platinum composites and the coupling effect between Pt and Ag+, a simple, unlabeled colorimetric sensing method is proposed to achieve the quantitative detection of Ag+. Under optimal conditions, the detection range of Ag+ by this colorimetric sensing method is 0.5–1000 μM, and the detection limit is 0.5 μM, which is lower than the previously reported detection limit of unlabeled Ag+ colorimetric sensing method, showing higher sensitivity and detection range. Under the same conditions, the sensor has almost no response to interference ions, showing good specific recognition ability. In addition, the colorimetric sensing method can be used to detect Ag+ in actual water samples, serving as a new paradigm for visual detection of Ag+. Graphical abstract

show abstract

An Environmentally Benign Green Approach for the Reduction of Graphene Oxide by Apple Extract: Spectroscopic and Thermal Interpretation

Cited by 2 publications

References 24 publications

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Ag+ colorimetric sensor based on graphene oxide/nano-platinum composite

Contact Info

Product

Resources

About