Nickel nanoparticles synthesized from Psidium guajava peels mediated degradation of Orange E3 dye reactive dye: a sustainable approach

Rafique, Muhammad Asim; Kiran, Shumaila; Jamal, Adil; Abrar, Shazia; Jalal, Fatima; Rahman, Noorsaadah Abd.

doi:10.1007/s13762-022-04509-w

Cited by 2 publications

(2 citation statements)

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“…AgNPs obtained through its extracts have been examined for antibacterial and antifungal activity. 45,49−55 In certain cases, even their catalytic activity in the degradation of dyes present in industrial wastewater like Reactive Yellow 160, 56 Direct Fast Rose FR Red 227, 57 Basic Brilliant Flavine Y-40, 57 Reactive Red 81, 58 Congo Red Direct, 59 Orange E3 60 and Crystal Violet 61 have been confirmed. Sun and his co-workers assessed the effects of time, optimal dosage of extract, and temperature on the synthesis of AgNPs (20−90 nm).…”

Section: Introductionmentioning

confidence: 98%

“…Tea leaves as a reach plant source of natural reducing compounds have gained recognition among the interests of researchers not only in terms of extraction but also in the synthesis of nanoparticles of various metals. – Of all types of tea, green tea deserved special attention. AgNPs obtained through its extracts have been examined for antibacterial and antifungal activity. ,– In certain cases, even their catalytic activity in the degradation of dyes present in industrial wastewater like Reactive Yellow 160, Direct Fast Rose FR Red 227, Basic Brilliant Flavine Y-40, Reactive Red 81, Congo Red Direct, Orange E3 and Crystal Violet have been confirmed. Sun and his co-workers assessed the effects of time, optimal dosage of extract, and temperature on the synthesis of AgNPs (20–90 nm) .…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles: Optimizing Green Tea Leaf Extraction for Enhanced Physicochemical Properties

Wirwis

Sadowski

2023

ACS Omega

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In this paper, we present the optimization of green tea leaf (Camellia sinensis L.) extraction, carried out using water and hydroalcoholic solvents, for the subsequent synthesis of silver nanoparticles (AgNPs). The value ranges for independent variables, including pH, time, and temperature, were selected based on single-factor experiments and used for extraction in the order presented by the Box–Behnken design. Three-dimensional response surface graphs were used to visually present the optimization results and determine the optimal extraction conditions: pH = 7, 30 min, 80 °C for water and pH = 5.5, 50 min, and 80 °C for water–ethanol. Our findings indicate that the water–ethanol mixture extracted more polyphenols. We compared the physicochemical properties of AgNPs obtained using both types of extractants via DLS and TEM analysis. We proposed a predicted mechanism for the reduction and stabilization of AgNPs based on the Fourier transform infrared data. The hydroethanolic extract leads to significant nanoparticle aggregation, which can be explained by the nucleation theory and agglomeration of nanoparticles in the presence of excess macromolecular organic substances (flocculation).

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