Noble metallic nanoparticles from waste Nypa fruticans fruit husk: Biosynthesis, characterization, antibacterial activity and recyclable catalysis

Doan, Van-Dat; Phung, Minh-Tan; Nguyen, Thi Lan-Huong; Mai, Thanh-Chi; Nguyen, Thanh-Danh

doi:10.1016/j.arabjc.2020.08.024

Cited by 26 publications

(4 citation statements)

References 46 publications

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“…The broad band at 3270 cm -1 is attributed to the stretching vibration of hydroxyl groups in polyphenolic compounds, terpenoids containing alcohol functional groups, and carboxylic compounds presented in the LR leaves extract as mentioned before [21,38]. The high-intensity peak at 1602 cm -1 is associated with C=C and C=O vibrations of benzene rings and carbonyl groups of amino acids [39]. The peak at 1382 cm −1 is assigned to stretching vibrations of the carboxylate groups [40].…”

Section: Resultsmentioning

confidence: 78%

“…The crystalline phase composition and crystal size of LR-AgNPs and LR-AuNPs were examined by XRD patterns, as shown in Figure 2 [39,43]. The XRD patterns of the biosynthesized MNPs were also utilized to calculate their nanocrystallite size based on the Monshi-Scherrer equation as below [44,45].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, phenolic groups in the ortho-and meta positions may cause a little space effect, hindering this exposure. The presence of AgCl in LR-AgNPs may positively affect its catalytic activity in the first use [39]. However, a comparison of XRD intensity showed that there was only small amount of AgCl; therefore, this influence is considered as not very significant and may be negligible.…”

Section: Catalytic Activity Of Mnpsmentioning

confidence: 99%

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Silver and Gold Nanoparticles from Limnophila rugosa Leaves: Biosynthesis, Characterization, and Catalytic Activity in Reduction of Nitrophenols

Ngu

Chau

et al. 2021

Journal of Nanomaterials

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This study describes a simple green method for the synthesis of Limnophila rugosa leaf-extract-capped silver and gold nanoparticles without using any expensive toxic reductant or stabilizer. The noble metal nanoparticles were characterized by Fourier transform infrared (FTIR) microscopy, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray analysis (EDX), high-resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED), and dynamic light scattering (DLS) method. It has been found that the biosynthesized silver and gold nanoparticles are nearly spherical in shape with a mean particle size distribution of 87.5 nm and 122.8 nm, respectively. XRD and SAED patterns confirmed the crystalline nanostructure of the metal nanoparticles. FTIR spectra revealed the functional groups of biomolecules presented in the extract possibly responsible for reducing metallic ions and stabilizing formed nanoparticles. The biosynthesized metal nanoparticles have potential application in catalysis. Compared to previous reports, Limnophila rugosa leaf-extract-capped silver and gold nanoparticles exhibited a good catalytic activity in the reduction of several derivatives of nitrophenols including 1,4-dinitrobenzene, 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Catalytic Activity Of Mnpsmentioning

confidence: 99%

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Silver and Gold Nanoparticles from Limnophila rugosa Leaves: Biosynthesis, Characterization, and Catalytic Activity in Reduction of Nitrophenols

Ngu

Chau

et al. 2021

Journal of Nanomaterials

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“…Determining the recyclability of SNPs has great significance such as: (i) making the process cost-effective by reducing the expenses involved in the repeated synthesis of the SNPs and (ii) reduces the amount of SNPs released into the environment thereby reducing the overall toxicity caused by the SNPs on the surrounding ecosystem [36][37][38]. Recently, several research groups have focussed on the synthesis and preparation of NPs with good catalytic efficiency as well as focussing on their recyclability [39][40][41][42][43] (Table 5). Based on these reasons, the recyclability of SNPs was also investigated in the degradation of RhB and MO dyes in the presence of SBH as reducing agent.…”

Section: Recyclabilitymentioning

confidence: 99%

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

2022

NanoWorld J

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Poly-extract (equal ratio of tulasi (leaf ), neem (leaf ) and turmeric (rhizome) aqueous extracts) was used for the synthesis of silver nanoparticles (SNPs). The SNPs were then used for the degradation of rhodamine-B (RhB) and methyl orange (MO) in presence of sodium borohydride (SBH; reducing agent) as nano-catalysts. Influence of four physicochemical parameters such as: nano-catalyst and reducing agent concentration along with temperature and pH of the degradation process were investigated. Maximum degradation was observed at 100 µg (SNPs amount), 20 mg (SBH amount) and at 70 °C for both RhB and MO dyes. Whereas, pH 8 and pH 6 were found to optimum for RhB and MO dyes, respectively. At optimum conditions, SNPs showed 97.41 ± 2.39% degradation with 0.1554 min -1 under 24 min and 97.32 ± 2.12% degradation with 0.5017 min -1 under 7 min for RhB and MO dyes, respectively. SNPs further showed good recyclability, with 84.22 ± 2.19% (under 7 min) MO dye degradation even after Cycle 6 with 0.2071 min -1 as degradation rate. However, SNPs showed low recyclability for RhB dye degradation with only 71.05 ± 2.14% (under 24 min) degradation after Cycle 4 with 0.0556 min -1 . It was observed that degradation kinetics was following pseudo-first order kinetics.

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Organic Waste as Reducing and Capping Agents for Synthesis of Silver Nanoparticles with Various Applications

et al. 2022

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Currently, the large amount of organic waste produced represents one of the leading environmental problems. According to United Nations, every year a third of all food produced ends up rotting and, therefore, becoming waste. Its use and revalorization represent an attractive alternative in the search for solutions to this situation. In this context, these residues can be used to obtain extracts beneficial for nanotechnology, acting as a reducing and stabilizing agent to produce metal nanomaterials such as silver nanoparticles by green synthesis, an ecofriendly and nontoxic method. Silver nanoparticles have been applied in applications as antibacterial, antifungal, and catalytic agents, as well as antioxidants, biosensors, and treatment of various diseases. Thus, this review contributes to fostering and promoting a sustainable environmental awareness through the reuse and revalorization of organic waste, which allows the sustainable biosynthesis of functional silver nanoparticles to be widely applied successfully in various fields of application.

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Noble metallic nanoparticles from waste Nypa fruticans fruit husk: Biosynthesis, characterization, antibacterial activity and recyclable catalysis

Cited by 26 publications

References 46 publications

Silver and Gold Nanoparticles from Limnophila rugosa Leaves: Biosynthesis, Characterization, and Catalytic Activity in Reduction of Nitrophenols

Silver and Gold Nanoparticles from Limnophila rugosa Leaves: Biosynthesis, Characterization, and Catalytic Activity in Reduction of Nitrophenols

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

Organic Waste as Reducing and Capping Agents for Synthesis of Silver Nanoparticles with Various Applications

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