Tailoring collaborative N–O functionalities of graphene oxide for enhanced selective oxidation of benzyl alcohol

Porous Heteroatom‐Doped Carbons: Efficient Catalysts for Selective Oxidation of Alcohols by Activated Persulfate

“…The electrochemical activation of persulphate is known for degrading multiple organic compounds [24] . A mechanism proposed by the other authors is that the carbonaceous materials may act as a bridge between the alcohol (electron donor) and persulfate (electron acceptor) without the generation of radicals [9a,22, 25] . The dual doping of carbon with N and O might facilitate the formation of a charge‐transfer complex (electron‐donor‐acceptor) where the N‐pyridinic is the link for the alcohol and the N‐pyrrolic and/or C=O or O−C=O might serve as a link to persulfate, the presence of the nanoreactor (cavities) might facilitate the proximity between these reagents.…”

“…Li et al. showed that electron‐rich carbonyl groups have a higher redox potential and are more active to cleave peroxymonosulfate [9a] . O1s XPS spectra of the N‐doped carbons show the presence of carbonyl groups (C=O) in a high percentage for CN‐500 and CN‐600 among the CN‐materials.…”

Advances in Graphene/Inorganic Nanoparticle Composites for Catalytic Applications

“…The ZrO x −MnCO 3 /HRG nanocomposite exhibited higher catalytic efficiency than a ZrO x −MnCO 3 catalyst (without HRG), which gave a 74 % conversion of the alcohol. The selectivity of oxidation of benzyl alcohol was enhanced by tailoring the N doping in graphene support [115] . This indicates that HRG improves the catalytic performance of the catalyst.…”

“…The selectivity of oxidation of benzyl alcohol was enhanced by tailoring the N doping in graphene support. [115] This indicates that HRG improves the catalytic performance of the catalyst. The enhanced catalytic efficiency may be attributed to the reduction of GRO to HRG which restores the π-electron conjugation system which leads to strong electronic interactions due to (π-π) stacking between the aromatic reactant alcohols and the HRG surface near the active sites of the catalyst (i. e., ZrO x À MnCO 3 ).…”

Carbon Materials as Catalytic Tools for Oxidative Dehydrogenations and Couplings in Liquid Phase

“…71 In subsequent work by S. Liu, N-doped, carbonyl-enriched graphene oxide was employed for the same purpose: in this case, the pyridinic N atom was shown to be able to promote the activation of PMS via the neighboring carbonyl groups, thereby improving the selectivity of the process. 72 Significantly, the seminal study by Bielawski, 64 despite the controversy generated by the high loading and poor recyclability of GO employed in their study, 73 is considered the starting point for all further studies on additive-free, carbon-based systems for alcohol oxidation (Scheme 26). The catalyst demonstrated promising chemoselectivity and functional group tolerance, as highlighted by its ability to catalyze the oxidation of cyclohexanol with a conversion of >98%, as well as 2-thiophenemethanol into the respective aldehyde without collateral sulfur oxidation.…”