P-Doped carbons derived from cellulose as highly efficient metal-free catalysts for aerobic oxidation of benzyl alcohol in water under an air atmosphere

Long, Zhouyang; Sun, Liming; Zhu, Wei; Chen, Guojian; Wang, Xiaochen; Sun, Wenqiang

doi:10.1039/c8cc03711f

Cited by 30 publications

(15 citation statements)

References 24 publications

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“…Later on, the above mechanism was confirmed for a phosphorus-containing carbon prepared by phosphoric acid activation of microcrystalline cellulose in the selective oxidation by air of benzyl alcohol to benzaldehyde (99.7% yield) in the presence of water [142]. The catalyst exhibited a high turnover frequency, which was ascribed to C 3 PO species identified by XPS experiments and DFT calculations.…”

Section: Oxidation Of Benzyl Alcohols To Benzaldehydesmentioning

confidence: 74%

“…rice husks [124][125][126][127], jackfruit peels [128], vine shoots [129,130], sisal fibers [131], coffee grounds [132,133], smooth cordgrass [134], agave bagasse [135], artichoke leaves [136], reedy grass leaves [137], lotus stalks [138], water hyacinth [139], hay [140], biomass components like cellulose [141,142] and lignin [95,141,[143][144][145][146], bituminous coal [91], lignite [147], synthetic polymers like epoxy resin [148], polyacrylonitrile [149,150], poly(styrene-co-divinylbenzene) [151,152],…”

Section: Carbonization Of a Carbon-containing Precursor Mixed With H 3 Po 4 (Phosphoric Acid Activation)mentioning

confidence: 99%

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Phosphorus-containing carbons: Preparation, properties and utilization

Puziy

Poddubnaya

Gawdzik

et al. 2020

Carbon

108

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Section: Oxidation Of Benzyl Alcohols To Benzaldehydesmentioning

confidence: 74%

Section: Carbonization Of a Carbon-containing Precursor Mixed With H 3 Po 4 (Phosphoric Acid Activation)mentioning

confidence: 99%

Phosphorus-containing carbons: Preparation, properties and utilization

Puziy

Poddubnaya

Gawdzik

et al. 2020

Carbon

108

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“…The two characteristic peaks located at about 1342 and 1584 cm −1 correspond to the D and G bands of graphitic carbon, respectively. [41,43] The D band is caused by graphite microcrystals, several structural defects, edge unsaturation, and carbon atoms corresponding to the disorder and amorphous carbon. In contrast, the G band represents the sp 2 hybridized graphitic carbon atoms in the graphite structure.…”

Section: Resultsmentioning

confidence: 99%

Surface Phosphatization for a Sawdust‐Derived Carbon Catalyst as Kinetics Promoter and Corrosion Preventer in Lithium–Oxygen Batteries

Huang

Cheng

Zhang

et al. 2022

Adv Funct Materials

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Strong oxidant intermediates and the formation of byproducts during the discharge/charge process are the main challenges in the degradation of lithium-oxygen batteries (LOBs). A facile approach to maintain the stability of the cathode catalyst and avoid the formation of byproducts is essential for the development of LOBs. Here, a sawdust-derived carbon catalyst is fabricated and subjected to surface phosphatization to suppress corrosion between carbon and electrolyte/products. This prevents the formation of byproducts from parasitic reactions and boosts the reaction kinetics of the carbon catalyst in LOBs. The doped P atoms will prior to substitute an N atom in pyrrolic-N sites to form graphitic PN sites, instead of the graphitic PC sites. Experimental and density functional theory calculations reveal that the graphitic PN sites can function as a reaction kinetics promoter for the formation/decomposition of discharge products. Moreover, the graphitic PN sites can also prevent the formation of byproduct Li 2 CO 3 from the corrosion of the carbon catalyst, despite its poor catalytic capability in LOBs. As a result, the sawdust-derived P-doped catalyst exhibits an enhanced specific capacity of ≈20 000 mAh g -1 and long cycle stability of 226 and 160 cycles at 200 and 500 mA g -1 , respectively.

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“…For the first time, catalytic centers stemming from S‐doping were experimentally identified to be exocyclic S species (C−S−C, sulfur out of the carbon ring). Very recently, Chen et al . definitely found the critical catalytic role of the C 3 PO species based on the reaction result and DFT calculations.…”

Section: Oxidationmentioning

confidence: 99%

Heteroatom‐Enhanced Metal‐Free Catalytic Performance of Carbocatalysts for Organic Transformations

Shang

Gao

2019

ChemCatChem

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The exploitation and design of metal‐free catalysts for chemical transformation is always a fascinating theme from the prospective of fundamental and applied research. In addition to their distinct advantages such as lower cost, higher biocompatibility and reliability and thus higher sustainability, metal‐free materials often unexpectedly render different reaction pathway or mechanism from conventional metal catalysts. As a consequence, metal‐free catalysts have revolutionized and expanded the platform of catalysis. Among them, carbons are a typical class of nonmetallic materials. To date, a series of elements (e. g., B, N, P or S) as heteroatom dopants have equipped pristine carbons with enhanced performance and even new chemical functionality. It was proposed to attribute to modulated electrical properties and surface physicochemical features originated from structural distortions and changes of charge densities. In this minireview, we overviewed the catalytic application of heteroatom‐doped carbocatalysts in oxidation, oxidative coupling, reduction and hydrogenation reactions with special emphasis on the role of heteroatoms and consequently enhanced performance. This minireview highlights the structure‐activity correlations, thereby directing the rational design of advanced metal‐free catalysts for organic synthesis. Some controversies about active sites and challenges in catalyst design are also discussed here.

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P-Doped carbons derived from cellulose as highly efficient metal-free catalysts for aerobic oxidation of benzyl alcohol in water under an air atmosphere

Cited by 30 publications

References 24 publications

Phosphorus-containing carbons: Preparation, properties and utilization

Phosphorus-containing carbons: Preparation, properties and utilization

Surface Phosphatization for a Sawdust‐Derived Carbon Catalyst as Kinetics Promoter and Corrosion Preventer in Lithium–Oxygen Batteries

Heteroatom‐Enhanced Metal‐Free Catalytic Performance of Carbocatalysts for Organic Transformations

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