Citrus limetta Risso peel mediated green synthesis of gold nanoparticles and its antioxidant and catalytic activity

Sivakavinesan, M.; Vanaja, M.; Lateef, Rashid; Alhadlaq, Hisham A.; Mohan, Ranjith; Annadurai, G.; Ahamed, Maqusood

doi:10.1016/j.jksus.2022.102235

Cited by 24 publications

(3 citation statements)

References 29 publications

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“…These natural compounds can act as reducing agents and stabilizers in the synthesis of metal nanoparticles. Citrus peel extracts have been used to synthesize Au [18,21], Ag [22,23] CdO [24,25], ZnO [26,27], Fe [28], FeO [29], CuO [30], and TiO 2 [31] nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Selective Colorimetric Detection of Pb(II) Ions by Using Green Synthesized Gold Nanoparticles with Orange Peel Extract

Zannotti,

Piras,

Remia

et al. 2024

Chemosensors

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Gold nanoparticles (AuNPs) were prepared by using a green approach that employed orange (citrus sinensis) peel water extract (OPE) as a reducing agent. In this case, the organic compounds present in orange peel were able to reduce Au(III) to Au(0) and, at the same time, to act as a capping agent, functionalizing the surface of the AuNPs, stabilizing them in a water solution. This “green” approach valorizes orange peel waste as a resourceful material and makes the synthetic process of AuNPs more environmentally sustainable, safe, and economically feasible than the traditional methods. The obtained gold nanoparticles (AuNPs@OPE) were characterized by FT–IR, DLS, SEM analysis, and UV–Vis spectroscopy; the latter showed a characteristic surface plasmon resonance (SPR) band at 530 nm, typical of spherical gold nanoparticles. The AuNPs@OPE were then tested as colorimetric sensors for heavy metals in water, showing an affinity and selectivity toward Pb2+. In fact, in the presence of Pb2+, the added cation favors the aggregation process, and, in this case, nanoparticles form clusters due to the interactions between Pb2+ and the carboxyl/hydroxyl groups on the surface of the AuNPs@OPE, increasing the size of the nanostructure. This process is accompanied by a change in color of the AuNPs@OPE from pink to violet, with a formation of a second, new SPR band, at a higher wavelength, relative to the aggregate formation. The colorimetric assay was tested at different times with the addition of Pb2+ ions showing different LOD values of 13.31 µM and 0.05 µM after 15 min and 90 min, respectively. The proposed colorimetric assay was also tested for analyzing Pb2+ in drinking water samples demonstrating the reliability to use AuNPs@OPE with real samples.

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Section: Introductionmentioning

confidence: 99%

Selective Colorimetric Detection of Pb(II) Ions by Using Green Synthesized Gold Nanoparticles with Orange Peel Extract

Zannotti,

Piras,

Remia

et al. 2024

Chemosensors

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“…One research team presented the first report on the synthesis and characterisation of ZnO NPs utilizing a fruit of Citrus aurantifolia [18]. Citrus limetta Risso peel-mediated green synthesis of gold NPs, as well as its ability to act as an antioxidant and catalyst, were recently reported [19]. This research also emphasised the significance of bio-waste Citrus limetta in the production of nanostructured noble metals for a variety of applications.…”

Section: Introductionmentioning

confidence: 99%

Bio-functionalized, elongated hexagonal bi-pyramidal, citrus limetta/ZnO nanostructures as potential photocatalytic and seed germinating agents

Gaur,

Kumar,

Pal

et al. 2023

Funct. Compos. Struct.

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In this research, the photocatalytic and seed germination potentials of bio-functionalized, as-synthesized zinc oxide (ZnO) nanoparticles (NPs) were investigated. ZnO NPs were created by reducing zinc acetate hexahydrate with a citrus limetta (C. limetta) peel extract. The hexagonal wurtzite crystal was observed in C. limetta/ZnO NPs, with crystallite diameters ranging from 50 to 60 nm and an energy-band gap of 3.08 eV. FTIR spectrum confirmed the presence of phytochemicals from C. limetta on the surface of the resultant ZnO. The unique, elongated hexagonal bi-pyramidal nanostructures were spread evenly across a vast region, as validated by HRTEM and FESEM. The highly porous microstructure of C. limetta/ZnO and its large specific surface area of 80.72 m2/g were established by BET analysis. The catalytic performance of C. limetta/ZnO for the decomposition of the industrial reactive yellow 18 dye (RY18) was examined. Under UV light, RY18 dye could be broken down by more than 98% in 100 minutes. With a minimal energy consumption of 4.34 x 1022 J mol-1, the C. limetta/ZnO NPs demonstrated excellent performance (a quantum yield of 1.79 x 10-4 Ϣ and a figure-of-merit of 2.92 x 10-10 mol L J-1 g-1 h-1). The seed germinating capability of C. limetta/ZnO was investigated first time for the Brassica juncea crop. The germination and development of Brassica juncea seed were greatly enhanced by priming with C limetta/ZnO. Hence, C. limetta/ZnO NPs are identified as photocatalytic and seed-germinating agents with remarkable efficiency.

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“…Thus, various methods have been carried out by researchers to produce gold nanoparticles whose uses are very broad. These methods include biosynthesis using various plant extracts [2,[9][10][11][12][13][14][15][16][17], the Turkevich method [18][19][20][21], chemical reduction [22][23], laser ablation [24][25], sputter deposition [26], sonochemical [27], irradiation-y [28].…”

Section: Introductionmentioning

confidence: 99%

Preliminary reactor design for gold nanoparticle production by the Turkevich method on an industrial scale

Erlangga

Nandiyanto

Ragadhita

2023

Sustainable Engineering and Innovation

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This study aims to design and analyze the design of a batch-type reactor to optimize the production of gold nanoparticles on an industrial scale. The method used in the design of this reactor is the computational analysis of the reactor calculations, including stirring and mass balance as initial calculations using the Microsoft Excel application manually. The calculation results show that the designed reactor specifications have a reactor volume of 21.7335 ft3, cylinder height of 13.4612 in, a height of solution in the cylinder of 8.9046 in, vessel diameter of 73.2984 in, design pressure of 9.9978 psig, impeller length of 9.1840 in, shaft length of 10.5418 in, with stirring power 62.5228 Hp. Reactor design analysis is an important stage in the design of production processes on an industrial scale, where the specification results from the designed reactor can be used not only to adjust the reactor to the product but also to be used as a reference for production costs. The results of computational analysis and calculations performed on the reactor design in this study can be used as a reference and can be applied in the design of reactor performance analysis as a learning media, including operating mechanisms in the production process.

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Citrus limetta Risso peel mediated green synthesis of gold nanoparticles and its antioxidant and catalytic activity

Cited by 24 publications

References 29 publications

Selective Colorimetric Detection of Pb(II) Ions by Using Green Synthesized Gold Nanoparticles with Orange Peel Extract

Selective Colorimetric Detection of Pb(II) Ions by Using Green Synthesized Gold Nanoparticles with Orange Peel Extract

Bio-functionalized, elongated hexagonal bi-pyramidal, citrus limetta/ZnO nanostructures as potential photocatalytic and seed germinating agents

Preliminary reactor design for gold nanoparticle production by the Turkevich method on an industrial scale

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