Au&lt;SUB align="right"&gt;20Pd&lt;SUB align="right"&gt;1@SiO&lt;SUB align="right"&gt;2 nanoreactors highly effective in CO oxidation

Acosta, Brenda; Evangelista, Viridiana; Miridonov, Serguei V.; Fuentes, S.; Smolentseva, Elena; Simakov, Andrey

doi:10.1504/ijnt.2016.074532

Cited by 5 publications

(3 citation statements)

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“…[7][8][9][10] Metallic nanoparticles (NPs) are considered excellent catalysts for eliminating toxic pollutants due to their high surface area, simplicity, variety of fabrication routes and selectivity for specific reactions. [9,[11][12][13] Many scientific reports are devoted to the synthesis of colloidal, supported, and immobilised clusters and NPs to reduce nitrophenol compounds. For example, single and bimetallic Ag, Au, Pt, Pd, Fe@Au NPs, graphene oxide, and transition non-noble metals such as Zn, Cu, Ni, Mn, Co, Mo, and Fe are widely used for the catalytic reduction of nitroaromatic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, it is well‐known that the reaction mechanism requires the activation of hydrogen, the reducing agent, on the metallic surface, usually metallic species [7–10] . Metallic nanoparticles (NPs) are considered excellent catalysts for eliminating toxic pollutants due to their high surface area, simplicity, variety of fabrication routes and selectivity for specific reactions [9,11–13] …”

Section: Introductionmentioning

confidence: 99%

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Catalytic Transformation of Positional Nitrophenol Isomers on Highly Active Ag/Linde‐Type A4 Zeolite: A Comparative Analysis

et al. 2023

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The catalytic transformation of ortho-(o-NP), meta-(m-NP) and para-nitrophenols (p-NP) by Ag nanoparticles (Ag-NPs) stabilised on zeolite A4 (ZA4) is presented for the first time. The catalysts are prepared by microwave-assisted synthesis (Ag/ZA4-MW) or ion exchange (Ag/ZA4-IE). The results indicate that the nitrophenol reduction rate depends on the molecule structure and the presence of low-coordinated metallic Ag-NPs (~2 nm and sub nanometric species). Meanwhile, the reactivity tendency depends on the synthesis methodology (m-NP > p-NP > o-NP and o-NP > m-NP > p-NPfor Ag/ZA4-MW and Ag/ZA4-IE, respectively). The turnover frequency (TOF) values estimated for nitrophenols reduction are superior for Ag/ZA4-MW catalyst by several orders of magnitude compared with those obtained for Ag/ZA4-IE catalyst. In addition, the catalyst exhibits remarkable catalytic stability for the reduction of p-NP even after the fifth consecutive catalytic run. The presently prepared catalysts are characterised by superior catalytic activity for the reduction of nitroaromatic compounds than similar Ag-based materials reported in the literature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Catalytic Transformation of Positional Nitrophenol Isomers on Highly Active Ag/Linde‐Type A4 Zeolite: A Comparative Analysis

et al. 2023

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“…Hence, both reagents must be adsorbed, then activated, and finally transformed on the catalysts surface. Among the most studied catalysts in this reaction, there are non-toxic noble metal nanoparticles supported on metal oxides, polymers, carbon-based materials, etc [8,[10][11][12][13][14] due to their high feasibility in the abatement of pollutants dissolved in water In this context, Ag nanoparticles stabilized on zinc oxide modified with carbon nanotubes have been positioned as prominent candidates due to their relatively low cost, zero toxicity, and high absorption efficiency [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Ag@ZnO/MWCNT ternary nanocomposite as an active and stable catalyst for the 4-nitrophenol reduction in water

et al. 2021

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The nitroaromatic compounds, known as organic pollutants, have arising attention due to their carcinogenic character, highly dangerous to human health. In this work, the Ag@ZnO/MWCNT ternary nanocomposite synthesized via conjugation of sonochemical and solvothermal treatments manifests high performance in the reduction of 4-nitrophenol in the aqueous media (TOF value of 246 min−1 μmol metal−1). The incorporation of MWCNT onto the nanocomposite structure favored the reusing of the catalysts even after eight consecutive catalytic runs without catalysts cleaning nor product removal. Obtained samples were characterized by XRD, TEM, UV–vis, Raman and FTIR spectroscopies. It was found that ultrasonic treatment at relatively moderate conditions leads to functionalization of MWCNT, the appearance of C=C and OH groups and change of electronic properties of Ag@ZnO/MWCNT composite which provide its stable material dispersion in aqueous solution and high catalytic performance in the 4-nitrophenol reduction. This technique may be effectively applied for the functionalization of carbon including materials for their usage in an aqueous media.

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The Decoration of Gold Core in Au@ZrO2 Nanoreactors with Trace Amounts of Pd for the Effective Reduction of 4-Nitrophenol to 4-Aminophenol

et al. 2019

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Au<SUB align="right">20Pd<SUB align="right">1@SiO<SUB align="right">2 nanoreactors highly effective in CO oxidation

Cited by 5 publications

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Catalytic Transformation of Positional Nitrophenol Isomers on Highly Active Ag/Linde‐Type A4 Zeolite: A Comparative Analysis

Catalytic Transformation of Positional Nitrophenol Isomers on Highly Active Ag/Linde‐Type A4 Zeolite: A Comparative Analysis

Ag@ZnO/MWCNT ternary nanocomposite as an active and stable catalyst for the 4-nitrophenol reduction in water

The Decoration of Gold Core in Au@ZrO2 Nanoreactors with Trace Amounts of Pd for the Effective Reduction of 4-Nitrophenol to 4-Aminophenol

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