Metal‐Free Catalytic Reduction of 4‐Nitrophenol to 4‐Aminophenol by sp3@sp2‐Hybridized Bucky Nanodiamond

Zhang, Liyun; Feng, Guangjing; Liu, Zhilin; Zhou, Weihai; Han, Genxu; Wang, Jia; Ding, Yuxiao; Qiao, Zhen‐An

doi:10.1002/aesr.202200190

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…The k value of COF-TPCBP found from the slope of the graph was found to be at a competitive level with the noble metal-based heterogeneous catalysts (Table 1). [52][53][54][78][79][80][81][82][83][84][85][86][87][88][89][90][91]…”

Section: Catalytic Activity Of Cof-tpcbpmentioning

confidence: 99%

A Novel Viologen‐Derived Covalent Organic Framework Based Metal Free Catalyst for Nitrophenol Reduction

Altınışık

Koyuncu

2023

ChemCatChem

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It is highly desirable to develop new metal free catalysts to reduction of toxic organic pollutants such as 4-nitrophenol (4-NP). Viologens are efficient electron-transfer mediators (ETMs) for reduction reactions with NaBH 4 as an effective hydrogen source. NaBH 4 -assisted reduction of 4-NP via a novel viologenbased covalent organic framework as metal free catalyst has been reported. The butyl bridge between the pyridine moieties at viologen based COF-TPCBP structure provides flexibility to the framework and gives the structure and amorphous character according to SEM, TEM and XRD results. The flexible 3D structure was also demonstrated by the geometric optimization. The structure without any metal moiety was fully completed to 4-NP reduction in only 12 minutes and have 88 % efficiency after 5 catalytic cycles because of the porous surface of the COF-TPCBP powder.

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Section: Catalytic Activity Of Cof-tpcbpmentioning

confidence: 99%

A Novel Viologen‐Derived Covalent Organic Framework Based Metal Free Catalyst for Nitrophenol Reduction

Altınışık

Koyuncu

2023

ChemCatChem

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“…The aqueous 4-NP exhibited a prominent UV-vis absorbance peak at 318 nm, which corresponded well with the absorbance value of the pure sample. [46,47] Upon the addition of sodium borohydride to reduce 4-NP, a distinct yellow color emerged, attributed to the creation of 4-NP ions, subsequently causing a red shift in the peak to 399 nm. In the following, after a minute, an intensity reduction in the peak of 4-NP was observed.…”

Section: Heterogeneous Catalysis Of Copper Nanoparticles In 4-nitroph...mentioning

confidence: 99%

Arc Discharge Synthesis of Chitosan‐Mediated Copper Nanoparticles for Heterogeneous Catalysis in 4‐Nitrophenol Degradation

Ahmad,

Hajibeigy,

Poor

et al. 2023

Part & Part Syst Charact

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Copper nanoparticles (Cu‐NPs) have garnered substantial interest in the field of nanotechnology due to their exceptional physical and chemical properties and cost‐effectiveness. However, challenges such as particle aggregation and rapid copper oxidation affect nanoscale production. This study systematically investigates the synthesis of colloidal Cu‐NPs using chitosan (Cts) as a stabilizer and reducing agent in the arc discharge system, comparing it to distilled water as a medium. Confirmation of the purity, size, and morphology of the Cu‐NPs is achieved through various physicochemical characterization methods. X‐ray diffraction patterns confirm the synthesis of highly pure face‐centered cubic (fcc) crystal Cu‐NPs. UV–vis analysis reveals absorption peaks at 572–585 nm, indicating pure copper. Fourier‐transform infrared spectroscopy shows peaks at 638 and 597 cm−1, corresponding to Cu─Cts bonds. Transmission electron microscopy images depict spherical nanoparticles ranging from 15 to 45 nm, with smaller sizes at higher Cts concentrations. The catalytic activity of Cu‐NPs in the degradation of 4‐nitrophenol to 4‐aminophenol is assessed, with Cu‐NPs synthesized in distilled water demonstrating superior catalytic properties compared to 0.10 wt.% Cts. This study highlights the efficacy of the arc discharge method in producing pure, uniformly sized Cu‐NPs with potential applications in catalysis.

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Highly active nitrogen-doped biochar for catalytic reduction of 4-nitrophenol: Kinetic, thermodynamic and mechanism investigation

Yang,

Qi,

et al. 2024

Applied Surface Science

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Metal‐Free Catalytic Reduction of 4‐Nitrophenol to 4‐Aminophenol by sp³@sp²‐Hybridized Bucky Nanodiamond

Cited by 5 publications

References 33 publications

A Novel Viologen‐Derived Covalent Organic Framework Based Metal Free Catalyst for Nitrophenol Reduction

A Novel Viologen‐Derived Covalent Organic Framework Based Metal Free Catalyst for Nitrophenol Reduction

Arc Discharge Synthesis of Chitosan‐Mediated Copper Nanoparticles for Heterogeneous Catalysis in 4‐Nitrophenol Degradation

Highly active nitrogen-doped biochar for catalytic reduction of 4-nitrophenol: Kinetic, thermodynamic and mechanism investigation

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