Kinetic investigation for the catalytic reduction of nitrophenol using ionic liquid stabilized gold nanoparticles

Thawarkar, Sachin; Thombare, Balu R.; Munde, Bhaskar S.; Khupse, Nageshwar D.

doi:10.1039/c8ra07404f

Cited by 111 publications

(49 citation statements)

References 46 publications

(61 reference statements)

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“…The reduction of nitroaromatic compounds proceeds according to the Langmuir-Hinshelwood mechanism and was detailed in [69,[78][79][80][81]. According to this mechanism, hydrogenation of nitrobenzene and its derivatives takes place through two main stages [82].…”

Section: Assessment Of Catalytic Activitymentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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One of the promising applications of nanomaterials is to use them as catalysts and sorbents to remove toxic pollutants such as nitroaromatic compounds and heavy metal ions for environmental protection. This work reports the synthesis of Cu/CuO-deposited composite track-etched membranes through low-temperature annealing and their application in catalysis and sorption. The synthesized Cu/CuO/poly(ethylene terephthalate) (PET) composites presented efficient catalytic activity with high conversion yield in the reduction of nitro aryl compounds to their corresponding amino derivatives. It has been found that increasing the time of annealing raises the ratio of the copper(II) oxide (CuO) tenorite phase in the structure, which leads to a significant increase in the catalytic activity of the composites. The samples presented maximum catalytic activity after 5 h of annealing, where the ratio of CuO phase and the degree of crystallinity were 64.3% and 62.7%, respectively. The catalytic activity of pristine and annealed composites was tested in the reduction of 4-nitroaniline and was shown to remain practically unchanged for five consecutive test cycles. Composites annealed at 140 °C were also tested for their capacity to absorb arsenic(III) ions in cross-flow mode. It was observed that the sorption capacity of composite membranes increased by 48.7% compared to the pristine sample and reached its maximum after 10 h of annealing, then gradually decreased by 24% with further annealing.

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Section: Assessment Of Catalytic Activitymentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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“…Mussel-inspired Ag/poly(norepinephrine)/MnO 2 … important parameter, turnover frequency (TOF) for heterogeneous catalytic nanocomposite, is calculated by using the equation [62]:…”

Section: Catalytic Reduction Of 4-nitrophenol (4-np)mentioning

confidence: 99%

Mussel-inspired Ag/poly(norepinephrine)/MnO2 heterogeneous nanocatalyst for efficient reduction of 4-nitrophenol and 4-nitroaniline: an alternative approach

et al. 2020

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Noble metal-based surface chemistry is a well-practiced domain on interest in catalysis. A newborn in mussel-inspired coating based on catecholic chemistry, poly(norepinephrine) (PNE), has been synthesized via cyclization polymerization technique over MnO 2 nanosheets. The physisorped PNE macromolecular chains over MnO 2 nanosheets act as green reducing agent for silver ions resulting in arresting the quasi-spherical silver nanoparticles distributed over the MnO 2-PNE assembly. The catalytic activity was performed against nitroaryl molecules which evidenced fast reduction with pseudo-first-order kinetics. The superiority which lies in this work is their facile preparation, high surface area due to sheet-like morphology, and fast catalytic reduction. These practical observations spread its window as nanocatalyst toward environmental remediation of hazardous nitroaryl compounds.

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“…6a) is shown at 318 nm but aer addition of NaBH 4 the peak shied to 400 nm with a color conversion from light yellow to strong yellow due to NaBH 4 converted 4-nitrophenol to 4nitrophenolate. 63,64 The coexistence of these two peaks indicates the copresence of 4-nitrophenol and nitrophenolate during the equilibrium, which is due to 4-nitrophenol self-ionization. 10 In terms of g-C 3 N 4 , no signicant reduction was observed for pure g-C 3 N 4 in presence of NaBH 4 (Fig.…”

Section: -Np Catalytic Reductionmentioning

confidence: 99%

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄

et al. 2021

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Kinetic investigation for the catalytic reduction of nitrophenol using ionic liquid stabilized gold nanoparticles

Abstract: Catalytic reduction of nitrophenol using ionic liquid stabilized AuNPs.

Cited by 111 publications

References 46 publications

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Mussel-inspired Ag/poly(norepinephrine)/MnO2 heterogeneous nanocatalyst for efficient reduction of 4-nitrophenol and 4-nitroaniline: an alternative approach

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄

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Kinetic investigation for the catalytic reduction of nitrophenol using ionic liquid stabilized gold nanoparticles

Abstract: Catalytic reduction of nitrophenol using ionic liquid stabilized AuNPs.

Cited by 111 publications

References 46 publications

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Mussel-inspired Ag/poly(norepinephrine)/MnO2 heterogeneous nanocatalyst for efficient reduction of 4-nitrophenol and 4-nitroaniline: an alternative approach

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO4/g-C3N4 nanostructures in the presence of NaBH4

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Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄