Green synthesis of gold, silver, platinum, and palladium nanoparticles reduced and stabilized by sodium rhodizonate and their catalytic reduction of 4-nitrophenol and methyl orange

Islam, Md. Tariqul; Saenz-Arana, Ricardo; Wang, Huiyao; Bernal, Ricardo A.; Noveron, Juan C.

doi:10.1039/c8nj01223g

Cited by 87 publications

(41 citation statements)

References 28 publications

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“…The K app value of the reduction reaction was estimated to be 3.22 × 10 −2 , 3.70 × 10 −2 , 4.49 × 10 −2 and 5.67 × 10 −2 min −1 for PSF1, PSF2, PSF3, and PSF4, respectively. The Kapp values obtained in this work are comparable to Islam et al’s work reported for the PtNPs [ 37 ]. The Kapp for the treated silk fabric enhanced with the increase of the amount of PtNPs on the surface of silk fabrics, indicating that the catalytic activity is determined by the content of platinum on the silk fabrics.…”

Section: Resultssupporting

confidence: 90%

Functionalization of Silk with In-Situ Synthesized Platinum Nanoparticles

et al. 2018

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After platinum nanoparticles (PtNPs) were in-situ synthesized on silk fabrics through heat treatment, it was determined that the treatment of the silk fabrics with PtNPs imparted multiple functions, including coloring, catalysis, and antibacterial activity. The formation of PtNPs on fabrics was affected by the Pt ion concentration, pH value of solution, and reaction temperature. Acidic condition and high temperature were found to facilitate the formation of PtNPs on silk. The color strength of silk fabrics increased with the concentration of Pt ions. The PtNP treated silk fabrics exhibited reasonably good washing color fastness and excellent rubbing color fastness. The morphologies and chemical components of the treated silk fabrics were analyzed using scanning electron microscopy and X-ray photoelectron spectroscopy. The PtNP treated silk fabric exhibited significant catalytic function and a notable antibacterial effect against Escherichia coli (E. coli).

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Section: Resultssupporting

confidence: 90%

Functionalization of Silk with In-Situ Synthesized Platinum Nanoparticles

et al. 2018

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“…Ion-track etched polymers coated with catalytically active metallic NPs have previously been investigated as potential catalysts in flow-reactors, showing very high 4-nitrophenol conversion rates. [28,32] Activity towards this reaction has been reported for many transition metals including Cu, [26] Au, [27,50,87] Ag, [32,88] Pd, [34,89] Pt [89,90] and Ru. [91] In the case of Ir, 4nitrophenol reduction has been studied on dispersed NPs with mixed results regarding the activity.…”

Section: Catalysis Experimentsmentioning

confidence: 81%

Electroless Nanoplating of Iridium: Template‐Assisted Nanotube Deposition for the Continuous Flow Reduction of 4‐Nitrophenol

et al. 2020

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Electroless plating is a powerful tool in nanofabrication and is available for many of the noble transition metals. There is, however, a striking lack of electroless plating procedures for the rarer platinum‐group metals. In this work, two plating baths for nanoscale iridium coatings are developed and their conformality and nanofabrication potential are showcased by coating ion‐track‐etched polycarbonate membranes, creating Ir nanotubes in the process. Both plating solutions yield morphologically different deposits, indicating that the microstructure of the film can be tuned by adjusting the composition of the plating bath. The catalytic performance of the deposited materials is investigated by using membrane‐embedded nanotubes as catalysts for the reduction of 4‐nitrophenol and methyl orange by borohydride, showing remarkable activity and stability. Operation in flow‐through configuration, in which the metallized membrane is implemented as a microreactor greatly enhances the interaction with the catalyst surface, considerably increasing product yield. The results highlight the potential of Ir nanoplating for realizing sophisticated nanostructures and heterogeneous catalysts, but also illustrate the intricacies related to the complex chemistry of electroless Ir plating baths.

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“…The use of sodium rhodizonate and sodium squarate for the synthesis of noble metal (gold, silver, platinum, and palladium) nanoparticles was reported in our previous studies. [47][48][49] The method for synthesising noble metal nanoparticles using sodium rhodizonate was found to be fast, having the ability to form nanoparticles of varying size depending on the temperature of synthesis. Moreover, it was found that the nanoparticles had a strong affinity to bind with the cellulose bers, which indicated the ligand exchangeability of the nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Rapid synthesis of ultrasmall platinum nanoparticles supported on macroporous cellulose fibers for catalysis

et al. 2019

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Green synthesis of gold, silver, platinum, and palladium nanoparticles reduced and stabilized by sodium rhodizonate and their catalytic reduction of 4-nitrophenol and methyl orange

Abstract: Sodium rhodizonate mediated green synthesis of gold, silver, platinum, and palladium nanoparticles and their catalytic reduction of 4-nitrophenol and methyl orange.

Cited by 87 publications

References 28 publications

Functionalization of Silk with In-Situ Synthesized Platinum Nanoparticles

Functionalization of Silk with In-Situ Synthesized Platinum Nanoparticles

Electroless Nanoplating of Iridium: Template‐Assisted Nanotube Deposition for the Continuous Flow Reduction of 4‐Nitrophenol

Rapid synthesis of ultrasmall platinum nanoparticles supported on macroporous cellulose fibers for catalysis

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