In situ biosynthesis of palladium nanoparticles on Artemisia abrotanum extract-modified graphene oxide and its catalytic activity for Suzuki coupling reactions

Salehi, Mirmehdi Hashemi; Yousefi, Mohammad; Hekmati, Malak; Balali, Ebrahim

doi:10.1016/j.poly.2019.02.053

Cited by 38 publications

(9 citation statements)

References 55 publications

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“…They all showed good antibacterial, anticancer and antifungal properties [33][34][35][36][37]. Anyway, to the best of our knowledge, A. abrotanum extracts have been employed in the synthesis of magnesium oxide (MgO) [38] or palladium (Pd) [39] nanoparticles for catalytic purposes only, while A. arborescens has never been used to prepare metal nanoparticles. Considering all the advantages of "green" AgNPs and the medicinal properties of Artemisia plants, especially against malaria, the synthesis of silver nanoparticles here proposed has been carried out using these two different Artemisia species, A. abrotanum and A. arborescens, and the AgNPs thus prepared have also been compared to AgNPs from a traditional chemical reduction for their activity against P. falciparum parasite.…”

Section: Introductionmentioning

confidence: 99%

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The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

et al. 2020

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Malaria represents one of the most common infectious diseases which becoming an impellent public health problem worldwide. Antimalarial classical medications include quininebased drugs, like chloroquine, and artesunate, a derivative of artemisinin, a molecule found in the plant Artemisia annua. Such therapeutics are very effective but show heavy side effects like drug resistance. In this study, "green" silver nanoparticles (AgNPs) have been prepared from two Artemisia species (A. abrotanum and A. arborescens), traditionally used in folk medicine as a remedy for different conditions, and their potential antimalarial efficacy have been assessed. AgNPs have been characterized by UV-Vis, dynamic light scattering and zeta potential, FTIR, XRD, TEM and EDX. The structural characterization has demonstrated the spheroidal shape of nanoparticles and dimensions under 50 nm, useful for biomedical studies. Zeta potential analysis have shown the stability and dispersion of green AgNPs in aqueous medium without aggregation. AgNPs hemocompatibility and antimalarial activity have been studied in Plasmodium falciparum cultures in in vitro experiments. The antiplasmodial effect has been assessed using increasing doses of AgNPs (0.6 to 7.5 μg/ mL) on parasitized red blood cells (pRBCs). Obtained data showed that the hemocompatibility of AgNPs is related to their synthetic route and depends on the administered dose. A. abrotanum-AgNPs (1) have shown the lowest percentage of hemolytic activity on pRBCs, underlining their hemocompatibility. These results are in accordance with the lower levels of parasitemia observed after A. abrotanum-AgNPs (1) treatment respect to A. arborescens-AgNPs (2), and AgNPs (3) derived from a classical chemical synthesis. Moreover, after 24 and 48 hours of A. abrotanum-AgNPs (1) treatment, the parasite growth was locked in the ring stage, evidencing the effect of these nanoparticles to hinder the maturation of P. falciparum. The anti-malarial activity of A. abrotanum-AgNPs (1) on pRBCs was demonstrated to be higher than that of A. arborescens-AgNPs (2).

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Section: Introductionmentioning

confidence: 99%

“…Anyway, to the best of our knowledge, A . abrotanum extracts have been employed in the synthesis of magnesium oxide (MgO) [ 38 ] or palladium (Pd) [ 39 ] nanoparticles for catalytic purposes only, while A . arborescens has never been used to prepare metal nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

et al. 2020

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“…We observed a reasonable yield for the cross‐coupling process at room temperature (Scheme 3) for aryl chlorides, although the reaction required slightly longer time than aryl iodides and aryl bromides, in comparison with reported works. [ 46,47 ]…”

Section: Resultsmentioning

confidence: 99%

“…We observed a reasonable yield for the cross-coupling process at room temperature (Scheme 3) for aryl chlorides, although the reaction required slightly longer time than aryl iodides and aryl bromides, in comparison with reported works. [46,47] The catalyst could be easily removed from the reaction mixture and reused with no significant loss of activity for seven cycles (Tables 1 and S2).…”

Section: Catalyst Preparationmentioning

confidence: 99%

Fe₃O₄‐SAHPG‐Pd⁰ nanoparticles: A ligand‐free and low Pd loading quasiheterogeneous catalyst active for mild Suzuki–Miyaura coupling and CH activation of pyrimidine cores

Azizollahi

Garcı́a-López

2020

Applied Organom Chemis

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This paper reports a green magnetic quasiheterogeneous efficient palladium catalyst in which Pd 0 nanoparticles have been immobilized in self-assembled hyperbranched polyglycidole (SAHPG)-coated magnetic Fe 3 O 4 nanoparticles (Fe 3 O 4-SAHPG-Pd 0). This catalyst has been used for effective ligandless Pd catalyzed Suzuki-Miyaura coupling reactions of different aryl halides with substituted boronic acids at room temperature and in aqueous media. Herein, SAHPG is used as support; it also acts as a reducing agent and stabilizer to promote the transformation of Pd II to Pd 0 nanoparticles. Also, this environmental friendly quasiheterogeneous catalyst is employed for the first time in the synthesis of new pyrimido[4,5-b]indoles via oxidative addition/C H activation reactions on the pyrimidine rings, which were obtained with higher yield and faster than when Pd(OAc) 2 was used as the catalyst. Interestingly, the abovementioned catalyst could be recovered in a facile manner from the reaction mixture by applying an external magnet device and recycled several times with no significant decrease in the catalytic activity.

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“…In contrast, with the promotion of environmental protection and green chemistry concept, pathfinders are exploring reliable, eco-friendly and promising processes for the synthesis of metal catalysts. Therefore, the widespread existing plants as a source of promising biomass have aroused great interest in the preparation of advanced catalytic materials [14][15][16][17]. The biosynthetic method has been characterised by simple production, waste utilisation, no chemical pollutants, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of eco‐friendly and recyclable Pd/LDHs catalyst using the withered leaves extract for Suzuki coupling reaction

Fan

2020

IET nanobiotechnol.

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The hydrotalcite-supported palladium (Pd) catalyst is prepared with a green and environmentally friendly route, introducing the extract of withered leaves as a dispersant and reducing agent (Pd/LDHs-B). Compared with the as-prepared catalyst (Pd/LDHs-P with the average diameter of 4.3 nm) using a chemical synthesis method with polyvinylpyrrolidone as a dispersant and ascorbic acid (Vc) as a reductant, the results indicate that the size of Pd nanoparticles in Pd/LDHs-B is smaller (ca. 3.6 nm). The Pd-LHDs-B (0.5 mmol‰) exhibits higher activity (98.66%) than Pd/LDHs-P (98.19%) in the Suzuki reaction of 4-bromotoluene and phenylboronic acid at 60°C for 30 min. Also, the reusability of Pd/LDHs-B is confirmed by recycling tests without a significant decrease in activity.

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In situ biosynthesis of palladium nanoparticles on Artemisia abrotanum extract-modified graphene oxide and its catalytic activity for Suzuki coupling reactions

Cited by 38 publications

References 55 publications

The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

Fe₃O₄‐SAHPG‐Pd⁰ nanoparticles: A ligand‐free and low Pd loading quasiheterogeneous catalyst active for mild Suzuki–Miyaura coupling and CH activation of pyrimidine cores

Biosynthesis of eco‐friendly and recyclable Pd/LDHs catalyst using the withered leaves extract for Suzuki coupling reaction

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In situ biosynthesis of palladium nanoparticles on Artemisia abrotanum extract-modified graphene oxide and its catalytic activity for Suzuki coupling reactions

Cited by 38 publications

References 55 publications

The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

The potential antimalarial efficacy of hemocompatible silver nanoparticles from Artemisia species against P. falciparum parasite

Fe3O4‐SAHPG‐Pd0 nanoparticles: A ligand‐free and low Pd loading quasiheterogeneous catalyst active for mild Suzuki–Miyaura coupling and CH activation of pyrimidine cores

Biosynthesis of eco‐friendly and recyclable Pd/LDHs catalyst using the withered leaves extract for Suzuki coupling reaction

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Product

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Fe₃O₄‐SAHPG‐Pd⁰ nanoparticles: A ligand‐free and low Pd loading quasiheterogeneous catalyst active for mild Suzuki–Miyaura coupling and CH activation of pyrimidine cores