Rhodium complex immobilized on graphene oxide as an efficient and recyclable catalyst for hydrogenation of cyclohexene

Chen, Dafa; Li, Yang; Zhang, Guoliang; Zhang, Fengbao; Fan, Xiaobin

doi:10.1039/c2nr33290f

Cited by 79 publications

(49 citation statements)

References 33 publications

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“…This result is rather surprising, especially if we compare it with the result obtained for the use of the heterogenised catalyst 3, which afforded full conversion to benzene (compare entries 4 and 5). This 'abnormal' enhancement in the activity of the immobilized catalyst onto the graphene material has already been observed before for catalysts supported onto graphene-oxide, 5,11 but this new example that we report here is far more striking because it…”

Section: Methodssupporting

confidence: 80%

Immobilization of Pyrene-Tagged Palladium and Ruthenium Complexes onto Reduced Graphene Oxide: An Efficient and Highly Recyclable Catalyst for Hydrodefluorination

2014

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RECEIVED DATE (to be automatically inserted after your manuscript is accepted if required according to the journal that you are submitting your paper to) 2 ABSTRACTThe co-immobilization of palladium and ruthenium complexes with pyrene-tagged Nheterocyclic carbene ligands onto reduced grahene oxide allows the formation of a highly efficient catalyst for the hydrodefluorination of a series of fluoroarenes. This procedure constitutes an easy one-pot preparation of materials with homogeneously distributed polymetallic catalysts. The catalytic system can be recycled for up to twelve times without measurable loss of activity. The activity of the catalyst is attributed to the synergistic action of the two metals.

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Section: Methodssupporting

confidence: 80%

Immobilization of Pyrene-Tagged Palladium and Ruthenium Complexes onto Reduced Graphene Oxide: An Efficient and Highly Recyclable Catalyst for Hydrodefluorination

2014

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“…57 The presence of Si-O bond was confirmed by a strong band at about 1116 cm −1 assigned to the Si-O-C stretching vibration. 58,59 Also, two broad bands at 3430 and 1630 cm -1 can be ascribed to the stretching and bending modes of -NH 2 groups, respectively. The presence of the anchored propyl chain of APTES was confirmed by C-H stretching vibrations at 2926 and 2850 cm .…”

Section: Characterization Of the Fe 3 O 4 /Go-nh 2 / H 3 Pmo 12 O mentioning

confidence: 98%

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Farhadi¹,

Hakimi²,

Maleki³

2017

ACSi

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In this study, the PMo 12 O 40 3− polyanion was immobilized chemically on amino functionalized magnetic graphene oxide nanosheets. The as-prepared ternary magnetic nanocomposite (Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 ) was characterized by powder X-ray powder diffraction (XRD), fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy, energy dispersive spectroscopy (EDX), field emission scanning electron microscopy (FESEM), BET surface area measurements, magnetic measurements (VSM) and atomic force microscopy (AFM). The results demonstrated the successful loading of H 3 PMo 12 O 40 (~36.5 wt.%) on the surface of magnetic graphene oxide. The nanocomposite showed a higher specific surface area (77.07 m 2 /g) than pure H 3 PMo 12 O 40 (≤10 m 2 /g). The adsorption efficiency of this nanocomposite for removing methylene blue (MB), rhodamine B (RhB) and methyl orange (MO) from aqueous solutions was evaluated. The nanocomposite showed rapid and selective adsorption for cationic dyes from mixed dye solutions. The adsorption rate and capacity of Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 were enhanced as compared with GO, GO-NH 2 , Fe 3 O 4 /GO-NH 2 , and H 3 PMo 12 O 40 samples due to enhanced electrostatic attraction and hydrogen-bonding interactions. The nanocomposite is magnetically separated and reused without any change in structure. Thus, it could be a promising green adsorbent for removing organic pollutants in water.

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“…Specifically, GO is reacted with chloro‐ thiol‐ or aminopropyltrialkoxysilane to introduce a functional group that subsequently establishes a covalent C–N, C–S, C–O derivative (Scheme ). The second step is the covalent anchoring of the metal complex or organic moiety on GO modified with alkoxysilane.…”

Section: Covalent Functionalization Strategiesmentioning

confidence: 99%

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Navalón

Herance

Álvaro

et al. 2017

Chemistry A European J

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The ideal graphene is a one-atom thick single layer of carbon atoms having sp hybridation in hexagonal arrangement. Due to their large surface area and good dispersability in common solvents, graphenes are suitable platforms to anchor covalently units. The appended unit can introduce additional functionality to graphene. Although the field of covalently modified graphene is still starting compared to the development of other carbon nanoforms, there is already many examples describing the use of modified graphenes as recoverable photo-, electrocatalysts as well as in non-linear optics and to improve mechanical resistance and solubility of graphenes. In this Review, the state of the art of covalently modified graphenes for these applications is reviewed. After some general sections describing properties and characterization techniques of graphenes relevant to their use as supports and those general reactions and starting substrates to obtain the modified graphene conjugates, the main body of the review describes the preparation and properties of covalently modified graphene depending on their use as catalyst, photocatalyst, photoresponsive material, non-linear optics, electrocatalyst and other uses. The last section of the review summarizes the main achievements of the field and what should be according to our view the future developments.

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Rhodium complex immobilized on graphene oxide as an efficient and recyclable catalyst for hydrogenation of cyclohexene

Abstract: Rhodium complexes can be homogeneously immobilized on functionalized graphene oxide through coordination interaction. The obtained catalyst can be readily recycled and shows enhanced activity in the catalytic hydrogenation of cyclohexene.

Cited by 79 publications

References 33 publications

Immobilization of Pyrene-Tagged Palladium and Ruthenium Complexes onto Reduced Graphene Oxide: An Efficient and Highly Recyclable Catalyst for Hydrodefluorination

Immobilization of Pyrene-Tagged Palladium and Ruthenium Complexes onto Reduced Graphene Oxide: An Efficient and Highly Recyclable Catalyst for Hydrodefluorination

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

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