Metallogel templated synthesis and stabilization of silver-particles and its application in catalytic reduction of nitro-arene

Sharma, Mukesh; Sarma, Plaban Jyoti; Goswami, Manash Jyoti; Bania, Kusum K.

doi:10.1016/j.jcis.2016.11.065

Cited by 23 publications

(21 citation statements)

References 38 publications

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“…The reduction of nitro to amine was also carried out using Au/Au 2 S catalyst using NaBH 4 within 600 s by Gadgil et al . It was observed that the % conversion and % yield were more or less similar to those of the reported catalyst using external reducing agent Hence, AuVNF could be considered as a promising catalyst for selective reduction of nitroarenes in isopropanol.…”

Section: Resultsmentioning

confidence: 83%

“…a large amount of studies has been devoted towards the development of new heterogeneous catalyst for such conversion. The success rate with appropriate nanocatalyst is found to be high with reducing agents like NaBH 4 or hydrazines . But due to certain limitation to the use of borohydrides/hydrazines such as effect on catalyst surface, toxicity of reaction medium etc.…”

Section: Resultsmentioning

confidence: 99%

“…Till date only few catalytic systems are known to do the NAR at the expense of isopropanol oxidation . NAR reactions are commonly performed using reducing agents like sodium borohydride, hydrazine etc. However, the presence of such reducing agents hampers the chemo‐selectivity of the product and also destroys the heterogeneity of the nanocatalyst .…”

Section: Introductionmentioning

confidence: 99%

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Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

et al. 2019

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Vanadium oxide (VOx) decorated with gold‐nanoparticles via self‐assembled monolayer approach is herein reported to be an efficient electrocatalyst for both oxygen and hydrogen evolution reactions (OER and HER) in alkali medium. The voids created in the nanoflute of gold‐vanadate were believed to be responsible for high mass transfer allowing the material to be highly applicable as a catalyst for water splitting and nitro‐arene reduction. The nanoflute exhibited high current density with low onset potential value in both OER and HER. The overpotential value at 10 mAcm−2 was observed to be 310 mV with onset potential of 1.43 V in case of OER while the overpotential value for HER was measured to be 282 mV. The nanocatalyst was found to be stable upto 10 h with minimal increment in the overpotential value. The Tafel plot value of 127 mVdec−1 in OER and 131 mVdec−1 in HER also signified for the high efficacy of the catalyst towards splitting of water molecules under high basic condition. The same material was also used as catalyst for reduction of various nitro‐arenes in isopropanol with 0.25 M KOH. The liberation of hydrogen via the oxidation of isopropanol was supposed to be responsible for reduction of nitro‐arenes. The ability of the catalyst to oxidize isopropanol was substantiated from electrochemical studies.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

et al. 2019

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“…The literature study intimates that Ag + -induced self-aggregation of small molecules and their subsequent applications in materials chemistry is progressive. [24,[33][34][35][36][37][38][39][40] On the other hand, Al 3 + ion is another metal ion which penetrates from environment into body and causes adverse physiological effects. [18,[20][21][22][23][24][25] although there is no well-known biological function for aluminium within the body.…”

Section: Introductionmentioning

confidence: 99%

Cholesterol‐Modified Quinazoline: Gelation, Ag⁺ and Al³⁺ Ion Detection under Different Conditions and Phase Selective Dye Removal with an Ag‐gel

et al. 2022

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A newly designed cholesterol-based quinazoline system 1 has been synthesized. The gelation ability of the compound 1 has been examined in different solvents. It exhibits strong gelation with silver perchlorate in benzene and acts as excellent visual detector of Ag + ions over a series of other metal ions examined. The compound 1 selectively detects Al 3 + ion as well with significant fluorometric response and color change. The benzene gel of 1 exhibits good viscoelastic response. In rheological study, the values of G' are observed to be 8 times higher than those of G'' at any frequency which signify dominant elastic character of the gel. The mode of aggregation of 1 during gelation in the presence of Ag + ions and the binding of Al 3 + ion in solution are explained by several spectroscopic techniques such as UV-vis, fluorescence, FTIR and NMR. Theoretical study further enlightens the observations. As application, Ag-gel shows excellent ability to remove toxic dyes from water.

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“…The application of nanoscale materials, particles, materials and structures, usually ranging from 1 nm to 100 nm, is a starving area of nanoscience and nanotechnology. Traditional chemical methods of synthesizing nanoparticles include the use of ethylene glycol [1], polyvinyl pyrrolidine (PVP) [2][3][4][5], and sodium borohydride [6][7][8]. The chemicals used in these methodologies can be toxic and highly reactive posing a risk to the environment and humans.…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

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Manjare

Sharma

Gurav

et al. 2020

Asian J. Nanosci. Mater.

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Biosynthesized silver nanoparticle is a very expanding and useful area. The reductant material in the plant extracts (leaves and bark) of Carissa carandas can produce silver nanoparticles. The plant leaves and bark extract of Carissa caranadas act as reducing and capping agent. Conventionally, chemical reduction is the most frequently applied approach for preparation of metallic nanoparticles; however, it might be hazardous to environment. In the present work we report eco-friendly, cost effective, and green approach for the synthesis of AgNPs by using 0.02 M AgNO3 solution and plant extracts (leaves and bark) of Carissa caranadas as reducing and capping agent. The synthesized nanoparticles were characterized using UV-VIS spectrophotomer, XRD, FT-IR, FE-SEM, and ICP-AES analysis. The biosynthesized silver nanoparticles showed a comparable antimicrobial activity against Staphylococcus aureus, Escherichia coli, and Aspergillus niger. Antimicrobial activity of the biosynthesized silver nanoparticles suggests their possible application in medical and pharmaceuticals industry.

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Metallogel templated synthesis and stabilization of silver-particles and its application in catalytic reduction of nitro-arene

Cited by 23 publications

References 38 publications

Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

Cholesterol‐Modified Quinazoline: Gelation, Ag⁺ and Al³⁺ Ion Detection under Different Conditions and Phase Selective Dye Removal with an Ag‐gel

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Metallogel templated synthesis and stabilization of silver-particles and its application in catalytic reduction of nitro-arene

Cited by 23 publications

References 38 publications

Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

Cholesterol‐Modified Quinazoline: Gelation, Ag+ and Al3+ Ion Detection under Different Conditions and Phase Selective Dye Removal with an Ag‐gel

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Cholesterol‐Modified Quinazoline: Gelation, Ag⁺ and Al³⁺ Ion Detection under Different Conditions and Phase Selective Dye Removal with an Ag‐gel