Reduction of p-nitrophenol by magnetic Co-carbon composites derived from metal organic frameworks

Ḥasan, Zubair; Cho, Dong-Wan; Chon, Chul-Min; Yoon, Kwon Ha

doi:10.1016/j.cej.2016.04.029

Cited by 211 publications

(65 citation statements)

References 57 publications

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“…The UV‐visible spectrum of NiP was taken at 2 min interval of time in [Figure (a–h)]. While increasing the reaction time, the absorbance at 400 nm was decreased gradually and completed within 9 min (98% conversion). In order to calculate the k app and T i values, the plot of time vs. ln( A / A o ) was drawn [Figure (i)].…”

Section: Resultscontrasting

confidence: 64%

Synthesis, characterization, and catalytic activity of fluorescent polyimide nanocomposites

Sundararajan¹,

Meenarathi²,

Anbarasan³

2016

J of Applied Polymer Sci

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A fluorescent polyimide (PI) was synthesized by using perylene tetracarboxylic dianhydride (PTCDAH) and a oxydianiline (ODA) in N-methyl pyrrolidone (NMP) solvent at 160 8C for 5 h under nitrogen atmosphere. Similarly, the fluorescent PI nanocomposites were prepared in the presence of silver (Ag) and vanadium pentoxide (V 2 O 5 ) nanoparticles under identical experimental conditions. The above synthesized PI and its nanocomposites were characterized by FTIR spectroscopy, UV-visible spectroscopy, Fluorescence emission spectroscopy, DSC, TGA, SEM, and FESEM. The data are carefully analyzed and compared with the literature values. The catalytic activity of the fluorescent nanocomposite fiber was tested towards the reduction of p-nitrophenol (NiP), Cr(VI) and Rhodamine6G (R6G) dye.

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Section: Resultscontrasting

confidence: 64%

Synthesis, characterization, and catalytic activity of fluorescent polyimide nanocomposites

Sundararajan¹,

Meenarathi²,

Anbarasan³

2016

J of Applied Polymer Sci

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“…Despite the promising results previously reported, complicated synthetic processes and prolonged reaction times are the main disadvantages in the studies mentioned above. On the other hand, there are other examples of a reduction reaction efficiently proceeding with MOF‐derived catalysts and a 4‐nitrophenol substrate , …”

Section: Introductionmentioning

confidence: 99%

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

et al. 2018

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Two copper‐based Cu3(btc)2 and Cu(Im)2 metal–organic frameworks are synthesized and annealed to form nanoporous Cu/Cu2O@C and Cu@N‐C nanoparticles for utilization as catalysts in the reduction reaction of aromatic nitro compounds to aromatic amines. All synthesized MOF compounds and MOF‐derived nanoparticles are characterized using XRD, Raman spectroscopy, TGA, SEM‐EDX, and XPS methods. Also, the pore‐size distribution and surface area of the MOF‐derived Cu/Cu2O@C and Cu@N‐C nanoparticles are characterized by the BJH and BET methods. After characterization, the catalysts Cu/Cu2O@C and Cu@N‐C are catalytically tested for the reduction reactions of various aromatic nitro compounds chemically by monitoring with a UV/Vis spectrometer. Both catalysts exhibit remarkable results compared with those in the literature. Also, the Cu/Cu2O@C catalyst shows better results than the Cu@N‐C catalyst.

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“…As shown in Figure a, the characteristic UV absorbance peak of pure 4‐NP solution occurs at λ = 317 nm; however, after the addition of NaBH 4 , the peak was remarkably redshifted to λ = 400 nm owing to the formation of 4‐nitrophenolate ions, and the color changed from light yellow to dark yellow. In the absence of catalyst, this peak at λ = 400 nm did not change after 12 h, which suggests that the reduction of 4‐NP did not take place . When small amounts of the as‐prepared catalysts were added to the solutions containing 4‐NP and NaBH 4 in water at ambient temperature, the solutions changed from bright yellow to colorless owing to the complete reduction of 4‐NP.…”

Section: Resultsmentioning

confidence: 98%

Synthesis of N‐Doped Core–Shell‐Structured Porous CoSe@C Composites and their Efficient Catalytic Activity for the Reduction of 4‐Nitrophenol

Zhao

Wang

et al. 2018

Eur J Inorg Chem

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In this work, core–shell‐structured CoSe@C and N‐CoSe@C dodecahedra were successfully obtained through the calcination of cobalt‐based metal–organic frameworks (ZIF‐67 as a Co‐based MOF or the N‐containing N‐ZIF‐67). In this approach, the cobalt species in the ZIF‐67 or N‐ZIF‐67 reacted with selenium powder to form CoSe nanoparticles in situ, and the organic species were transformed into carbon materials at temperatures between 700 and 900 °C for 2 h under a nitrogen atmosphere. The as‐synthesized materials were used for the reduction of 4‐nitrophenol (4‐NP) assisted by NaBH4. All of the catalysts could catalyze the reduction of 4‐NP to 4‐AP, and N‐CoSe@C‐800‐4 possessed the highest catalytic activity and could completely convert 4‐NP to 4‐AP in only 40 s at ambient temperature. This catalytic activity may be attributed to the high nitrogen content (4.15 %) of N‐CoSe@C‐800‐4. The morphologies and compositions of the synthesized samples were investigated by SEM, TEM, energy‐dispersive X‐ray spectroscopy (EDX), XRD, X‐ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption measurements.

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Reduction of p-nitrophenol by magnetic Co-carbon composites derived from metal organic frameworks

Cited by 211 publications

References 57 publications

Synthesis, characterization, and catalytic activity of fluorescent polyimide nanocomposites

Synthesis, characterization, and catalytic activity of fluorescent polyimide nanocomposites

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Synthesis of N‐Doped Core–Shell‐Structured Porous CoSe@C Composites and their Efficient Catalytic Activity for the Reduction of 4‐Nitrophenol

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