Oxovanadium(iv) and iron(iii) salen complexes immobilized on amino-functionalized graphene oxide for the aerobic epoxidation of styrene

Li, Zhifang; Wu, Shujie; Ding, Hong; Lu, Haiming; Liu, Jiayin; Huo, Qisheng; Guan, Jingqi; Kan, Qiubin

doi:10.1039/c3nj00982c

Cited by 49 publications

(29 citation statements)

References 38 publications

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“…Similarly, Kan et al covalently attached a salen-type ligand onto GO by nucleophilic substitution between the chloro-modified salen and the aminofunctionalized support (Table 17, entry 8) [379][380][381]. Various supported complexes named M-salen-GO were then synthesized via addition of the corresponding metal salt: Cu(II) [379], Co(II) [379], VO(IV) [380], Fe(III) [380] or MoO 2 (VI) [381].…”

Section: ) 3 ][Bf 4 ] (mentioning

confidence: 98%

Coordination chemistry on carbon surfaces

Axet¹,

Dechy‐Cabaret²,

Durand³

et al. 2016

Coordination Chemistry Reviews

110

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Section: ) 3 ][Bf 4 ] (mentioning

confidence: 98%

Coordination chemistry on carbon surfaces

Axet¹,

Dechy‐Cabaret²,

Durand³

et al. 2016

Coordination Chemistry Reviews

110

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“…reported that a sulfonatosalen manganese(III) complex in the interlayer space of Zn(II)–Al(III) layered double hydroxide showed higher conversion and selectivity compared with a homogeneous analogue for aerobic epoxidation of styrene . Our group found that oxovanadium(IV) and iron(III) salen complexes grafted onto amino‐modified graphene oxide could efficiently catalyze the epoxidation of styrene . Molecular oxygen is the preferred oxidant for the epoxidation of olefins with respect to environmental and economic issues.…”

Section: Introductionmentioning

confidence: 99%

Co(II), Fe(III) or VO(II) Schiff base metal complexes immobilized on graphene oxide for styrene epoxidation

et al. 2015

Applied Organom Chemis

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*Cobalt(II), iron(III) or oxovanadium(II) Schiff base metal complexes have been covalently grafted onto graphene oxide (GO) previously functionalized with 3-aminopropyltriethoxysilane. Potential catalytic behaviors were tested in the epoxidation of styrene, using air as the oxidant. The catalysts were characterized using infrared (IR) and Raman spectroscopies, thermogravimetric analyses, inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray diffraction, nitrogen adsorption-desorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). IR spectroscopy, thermogravimetric analyses and ICP-AES confirmed the successful incorporation of the metal Schiff base complexes onto GO. X-ray diffraction, nitrogen adsorption-desorption, Raman spectroscopy, SEM and TEM showed the intact structure of the GO. Co-GO and Fe-GO showed high styrene conversion (90.8 versus 86.7%) and epoxide selectivity (63.7 versus 51.4%). Nevertheless, VO-GO showed poorer catalytic performance compared with Co-GO and Fe-GO. The recycling results of these heterogeneous catalysts showed good recoverability without significant loss of activity and selectivity within four successive runs.

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“…In addition a broad diffraction peak is observed at 33.2° for GO which shifts to 25.3° in rGO. This remarkable shift in 2θ value with decreased d spacing (∼0.32 nm) may be due to the enhanced ordering of the two dimensional structure of graphene sheet in rGO . Figure C shows the powder XRD pattern of rGO, rGO‐VO(salen), SWCNTs and SWCNTs‐VO(salen) and VO(salen).…”

Section: Resultsmentioning

confidence: 97%

Dual Electrocatalytic Behavior of Oxovanadium(IV) Salen Immobilized Carbon Materials Towards Cysteine Oxidation and Cystine Reduction: Graphene Versus Single Walled Carbon Nanotubes

et al. 2016

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Oxovanadium(IV) salen (VO(salen)) (where salen=N,N’‐bis(salicylidene)ethylenediamine) is embedded onto reduced graphene oxide (rGO) and single walled carbon nanotubes (SWCNTs). The resulting materials, VO(salen) embedded rGO (rGO‐VO(salen)) and VO(salen) embedded SWCNTs (SWCNTs‐VO(salen)) show remarkable electrocatalytic activity for cysteine oxidation and cystine (the oxidized product of cysteine) reduction as demonstrated by cyclic voltammetry (CV). The materials, rGO‐VO(salen) and SWCNTs‐VO(salen) are characterized through spectroscopic and microscopic techniques. Transmission electron microscopy exhibits nanocrystalline view of VO(salen) on rGO‐VO(salen) while it appears like aggregated nodules in the SWCNTs‐VO(salen) revealing the nano‐structures excellently. Electrochemical cysteine oxidation is studied using rGO‐VO(salen) coated glassy carbon (GC) electrode (GC/rGO‐VO(salen)) and SWCNTs‐VO(salen) coated GC electrode (GC/SWCNTs‐VO(salen)). The efficiency of the catalytic platforms is compared. Overall number of electrons and electron transfer rate constant are obtained using rotating disc electrode for cysteine oxidation at GC/rGO‐VO(salen) and GC/SWCNTs‐VO(salen). Calibration curves for the determination of cysteine at GC/rGO‐VO(salen) and GC/SWCNTs‐VO(salen) exhibit linear range from 1.0 μM to 5.0 mM and 1.0 μM to 4.0 mM, respectively. GC/rGO‐VO(salen) and GC/SWCNTs‐VO(salen) are successfully applied for the real samples analysis with remarkable recovery.

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Oxovanadium(iv) and iron(iii) salen complexes immobilized on amino-functionalized graphene oxide for the aerobic epoxidation of styrene

Cited by 49 publications

References 38 publications

Coordination chemistry on carbon surfaces

Coordination chemistry on carbon surfaces

Co(II), Fe(III) or VO(II) Schiff base metal complexes immobilized on graphene oxide for styrene epoxidation

Dual Electrocatalytic Behavior of Oxovanadium(IV) Salen Immobilized Carbon Materials Towards Cysteine Oxidation and Cystine Reduction: Graphene Versus Single Walled Carbon Nanotubes

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