Reduction of 4-nitrophenol catalyzed by silver nanoparticles supported on polymer micelles and vesicles

Geng, Qingrui; Du, Jianzhong

doi:10.1039/c4ra01866d

Cited by 72 publications

(48 citation statements)

References 27 publications

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“…15 Nitro compounds are water soluble aromatic pollutants which can hardly be biodegraded or self-cleaned by the environment. 3,[17][18][19][20][21][22][23] The catalytic reduction of water soluble aromatic pollutants by heterogeneous catalysts has many advantages like easy operation, clean processing, high efficiency, low cost, etc. 16 Recently, much attention has been paid to the catalytic reduction of nitro compounds via metal-based catalysts in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

A multifunctional statistical copolymer vesicle for water remediation

Xiao

2016

Polym. Chem.

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Multifunctional statistical copolymers can be simply synthesized in one step without tedious and timeconsuming procedures. In addition, the fuzzy boundary between different functional groups in the statistical copolymers can facilitate the fabrication of new functional nanomaterials. Herein, we designed a novel multifunctional vesicle based on a statistical copolymer, poly[[2-hydroxy-3-(naphthalen-1-ylamino) propyl methacrylate]-stat-[2-(diethylamino)ethyl methacrylate]] [P(HNA 21 -stat-DEA 35 )] which can be synthesized by reversible addition-fragmentation transfer (RAFT) polymerization in one step. The HNA moiety is designed for capturing polycyclic aromatic hydrocarbons (PAHs) by π-π stacking, while the DEA moiety is engineered to immobilize gold nanoparticles for facilitating the reduction of 4-nitrophenol (4-NP) in aqueous solution. This vesicle showed excellent ability in water remediation by absorbing PAHs and accelerating the reduction of 4-nitrophenol (4-NP). Overall, this multifunctional statistical copolymer vesicle provides a new insight for designing multifunctional water remediation materials. † Electronic supplementary information (ESI) available: Synthesis, and characterization. See

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Section: Introductionmentioning

confidence: 99%

A multifunctional statistical copolymer vesicle for water remediation

Xiao

2016

Polym. Chem.

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“…[6][7][8] Consequently, it is desirable to explore simple and effective methods to maintain the longterm stability so as to determine the catalytic performance of AgNPs. [17][18][19][20][21] Lu et al reported on the in situ synthesis of AgNPs onto polystyrene (PS) core-poly(acrylic acid) (PAA) polyelectrolyte brush particles. [9][10][11][12] Hybrid catalysts integrated AgNPs with inorganic and organic supports have been successfully developed.…”

Section: Introductionmentioning

confidence: 99%

Alginate fibers embedded with silver nanoparticles as efficient catalysts for reduction of 4-nitrophenol

Zhao

et al. 2015

RSC Adv.

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Silver nanoparticles (AgNPs) have attracted much attention as promising catalysts in various electron transfer reactions due to their high catalytic efficiency. However, their poor stability results in the decrease of the catalytic efficiency and the poor cycling performance, which have hindered the practical application of AgNPs. In this work, alginate fibers embedded with AgNPs were prepared via in situ reduction of Ag + -alginate fibers in the presence of glucose. Field emission scanning electron microscopy (FE-SEM) and Transmission electron microscopy (TEM) indicated that spherical AgNPs dispersed on the surface and the interior of the fibers. The alginate fibers could enable AgNPs to be highly stabilized and thus led to the excellent reusability as heterogeneous catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in aqueous media. The catalytic results indicated that 4-NP could be reduced completely within 15 min. Moreover, the catalyst was easily recovered and reused for at least ten cycles in the reduction reactions, confirming its excellent stability. Most importantly, compared to the conventional powdery catalysts, the fiber catalyst could be handled much more conveniently for re-usage owing to its easily separation.

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“…44 Therefore it is necessary to develop environment friendly and clean techniques for the removal of such pollutants from industrial waste water. [45][46][47][48][49][50][51] In this work, the catalytic activity of the Ag 3 PO 4 /CoFe 2 O 4 nanocomposite for the reduction of 4-nitrophenol (4-NP) and 2-nitrophenol (2-NP) with sodium borohydride (NaBH 4 ) was evaluated. The catalytic reduction process of 4-NP was monitored by UV-vis spectroscopy as shown in Fig.…”

Section: Catalytic Reduction Of Nitrophenols Over Ag 3 Po 4 / Cofe 2 Omentioning

confidence: 99%

Ag₃PO₄/CoFe₂O₄ magnetic nanocomposite: synthesis, characterization and applications in catalytic reduction of nitrophenols and sunlight-assisted photocatalytic degradation of organic dye pollutants

2017

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) radicals were the main reactive species for dye degradation in the present sonocatalytic system. A proposed mechanism for the enhanced photocatalytic activity is also discussed based on the experimental results. In addition, the catalytic activity of the nanocomposite in the reduction of nitrophenols by using NaBH 4 was evaluated. The results showed that Ag 3 PO 4 /CoFe 2 O 4 exhibited the best performance in the reduction of 4-nitrophenol (4-NP) and 2-nitrophenol (2-NP) and revealed 100% conversion into the corresponding amino derivatives within 24-46 min with rate constant equal to 0.0714 min À1 and 0.0329 min À1, respectively.Moreover, due to the existence of the CoFe 2 O 4 , the Ag 3 PO 4 /CoFe 2 O 4 nanocomposite could be magnetically separated from the reaction mixture and reused without any change in structure.

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Reduction of 4-nitrophenol catalyzed by silver nanoparticles supported on polymer micelles and vesicles

Abstract: We report the reduction of 4-nitrophenol catalyzed by silver nanoparticles supported on polymer micelles and vesicles which can significantly improve the stability, dispersibility and catalytic activity of silver nanoparticles even at one ppm.

Cited by 72 publications

References 27 publications

A multifunctional statistical copolymer vesicle for water remediation

A multifunctional statistical copolymer vesicle for water remediation

Alginate fibers embedded with silver nanoparticles as efficient catalysts for reduction of 4-nitrophenol

Ag₃PO₄/CoFe₂O₄ magnetic nanocomposite: synthesis, characterization and applications in catalytic reduction of nitrophenols and sunlight-assisted photocatalytic degradation of organic dye pollutants

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Reduction of 4-nitrophenol catalyzed by silver nanoparticles supported on polymer micelles and vesicles

Abstract: We report the reduction of 4-nitrophenol catalyzed by silver nanoparticles supported on polymer micelles and vesicles which can significantly improve the stability, dispersibility and catalytic activity of silver nanoparticles even at one ppm.

Cited by 72 publications

References 27 publications

A multifunctional statistical copolymer vesicle for water remediation

A multifunctional statistical copolymer vesicle for water remediation

Alginate fibers embedded with silver nanoparticles as efficient catalysts for reduction of 4-nitrophenol

Ag3PO4/CoFe2O4 magnetic nanocomposite: synthesis, characterization and applications in catalytic reduction of nitrophenols and sunlight-assisted photocatalytic degradation of organic dye pollutants

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Ag₃PO₄/CoFe₂O₄ magnetic nanocomposite: synthesis, characterization and applications in catalytic reduction of nitrophenols and sunlight-assisted photocatalytic degradation of organic dye pollutants