A Facile Green Reduction for Graphene‐Silver Nanocomposite Using Betel Leaf Extract for the Photocatalytic Degradation of Water Pollutants

Byram, Chandu; Nurbasha, Sharmila; Bollikolla, Hari Babu

doi:10.1002/slct.201702437

Cited by 17 publications

(6 citation statements)

References 47 publications

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“…Wherein, the addition of AgNPs leads to the formation of a new energy level which reduces the band gap energy and prolongs the recombination of eÀ h + . [52] Therewithal, AgNPs play the role of an electronic adaptor from the electron-hole separation of TiO 2 semiconductors while the existence of UV irradiation. However, instead of the transmission from CB to VB directly, these electrons are moved to owe to the mobility of the AgNPs and displaced on the surface of the graphene sheets.…”

Section: Chemistryselectmentioning

confidence: 99%

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Xuan Trinh,

Mong Thy,

That Buu

et al. 2023

ChemistrySelect

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In this study, silver-titanium dioxide/graphene aerogel (AgÀ TiO 2 /GAÀ ATG) was synthesized via chemical reduction using ethylene diamine (EDA). The effects of reductant doses on the formation of the three-dimensional structure and the photocatalytic degradation efficiency of ATG were evaluated with five different volumes (20, 30, 40, 50, and 60 μL), corresponding to the ATG1, ATG2, ATG3, and ATG4, respectively. The results showed that 40 μL of EDA was the suitable condition for the formation of ATG three-dimensional structure. Characterizations revealed that ATG3 was successfully synthesized with distinctive peaks of Ag and TiO 2 in the X-ray diffraction patterns whilst scanning electron microscope and high resolution transmission electron microscope images showed a porous structure, silver nanoparticles and TiO 2 with an average size of 10-25 nm were uniformly distributed on the graphene surface. Furthermore, ATG3 possessed the highest photocatalytic capability to deteriorate methyl orange with an efficiency of up to 99.53 % with a catalyst dose of 0.3 mg/mL, superior compared to those of TiO 2 and TiO 2 /GA. The radicals scavenging experiments elucidated * O 2 to majorly contribute to the photodegradation process. Moreover, ATG3 showed high recyclability, which retains 80 % of yield even after 10 cycles. Those findings proved that ATG has high potential in the environmental remediation field.

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Section: Chemistryselectmentioning

confidence: 99%

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Xuan Trinh,

Mong Thy,

That Buu

et al. 2023

ChemistrySelect

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“…However, the nanocomposite can degrade 95 % of methylene blue dye in 2 hrs, photocatalytically. [68] The separation step can be further upgraded by making the nanocomposite magnetic as for example GO-Fe 3 O 4 /PAA/Ag (where PAA = polyallylacid and GO = graphene oxide). [69] Incorporation of silver nanoparticles into semiconductor metal oxide such as TiO 2 can overcome the demerits associated with large band gap and hence improve the photocatalytic activity.…”

Section: Dye Degradation By Silver Nanocompositementioning

confidence: 99%

Biofabricated Silver Nanoparticles and Nanocomposites as Green Catalyst to Mitigate Dye Pollution in Water‐A Review

Kalita

Jain

2021

ChemistrySelect

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Synthetic dyes are one of the major classes of pollutant released in the environment by industries such as textile, paper, leather, rubber, cosmetics, pharmaceutical etc. They are known carcinogen and extremely hazardous to human, plant and aquatic life. Conventional chemical, physical and biological methods used for treatment of industrial effluent are costly, time-consuming and produces secondary waste. Silver nanoparticle and nanocomposite-based catalyst are very effective in decomposition of dyes due to their high surface area-tovolume ratio, stability and biocompatibility. The degradation reaction takes place in presence of light (photocatalytic) or in presence of a reagent such as NaBH 4 or H 2 O 2 .Of various methods of silver nanoparticle/nanocomposite synthesis, green synthesis has been quite popular in recent times due to ease in synthesis and sustainability factor. In this review, current state of knowledge about application of green synthesized silver nanoparticles /nanocomposites in degradation of synthetic dyes and other organic pollutant have been summarized. Moreover, the article also emphasizes on the mechanism of degradation, the kinetic parameters and optimum treatment conditions.

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“…Chandu et al reported in Graphene-and Graphene Oxide-Bounded Metal Nanocomposite for Remediation of Organic… DOI: http://dx.doi.org/10.5772/intechopen.92992 situ synthesis of a nanocomposite of silver decorated on reduced graphene oxide sheets using betel leaf extract as a stabilizing and reducing agent. The sheet structure of reduced graphene oxide and uniformly distributed 28 nm silver nanoparticles exhibited good photocatalytic efficiency (95% in 2 h) against methylene blue in sunlight [35]. In another paper, Chandu et al efficiently synthesized graphene oxide sheets decorated with silver nanoparticles (CRG-Ag nanocomposite) in 12 h using custard apple leaf extract, and as-synthesized CRG-Ag nanocomposite showed excellent photocatalytic efficiency of 96% in 2 h under sunlight using methylene blue (5 mg/L) as a model pollutant [36].…”

Section: Photocatalytic Degradation Of Dyesmentioning

confidence: 99%

Graphene- and Graphene Oxide-Bounded Metal Nanocomposite for Remediation of Organic Pollutants

Brajesh¹

2020

Carbon-Based Material for Environmental Protection and Remediation

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Nanotechnology is one of the most interesting areas concerned with consumer products including cosmetics, household appliances, electronics, textiles, and food production as well as in medical products. Environmentally benign, economical, practical, and efficient processes for the synthesis of graphene (rGO)-/graphene oxide (GO)-bounded metal nanoparticles and their use for the remediation of organic pollutants (dyes, pharmaceutical wastes, pesticides, etc.) have been increasingly important goals in the chemical community from economic, safety, and environmental points of view. In this chapter, various strategies have successfully demonstrated the synthesis of graphene-/graphene oxide-bounded metal nanoparticles using various natural sources (plant extracts, biomolecules, polysaccharide, alcohols, etc.) and their applications in environmental remediation.

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A Facile Green Reduction for Graphene‐Silver Nanocomposite Using Betel Leaf Extract for the Photocatalytic Degradation of Water Pollutants

Cited by 17 publications

References 47 publications

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Biofabricated Silver Nanoparticles and Nanocomposites as Green Catalyst to Mitigate Dye Pollution in Water‐A Review

Graphene- and Graphene Oxide-Bounded Metal Nanocomposite for Remediation of Organic Pollutants

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