Surface modification of nanocast ordered mesoporous carbons through a wet oxidation method

Sánchez-Sánchez, Á.; Suárez-Garcı́a, Fabián; Martı́nez-Alonso, A.; Tascón, J.M.D.

doi:10.1016/j.carbon.2013.06.011

Cited by 53 publications

(28 citation statements)

References 39 publications

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“…This huge variety of oxygencontaining groups can be introduced onto the carbon material surface by treatment with oxidizing agents, either in the liquid phase (e.g., nitric acid, hydrogen peroxide, ammonium persulphate) or in the gas phase (e.g., with oxygen, ozone, nitrogen oxides) [110][111][112][113][114][115][116]. For liquid phase oxidation, a diluted or concentrated solution of the oxidizing agent is boiled in the presence of the carbon material.…”

Section: Post-synthesis Functionalizationmentioning

confidence: 99%

Nanostructured mesoporous carbons: Tuning texture and surface chemistry

Enterría

Figueiredo

2016

Carbon

155

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Section: Post-synthesis Functionalizationmentioning

confidence: 99%

Nanostructured mesoporous carbons: Tuning texture and surface chemistry

Enterría

Figueiredo

2016

Carbon

155

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“…Furthermore, an additional DTG peak is observed at about 420°C for the samples activated with HNO 3 . The distinct maxima at about 290 and 420°C in the case of this series of samples can be assigned to strong and weak acidic carboxylic groups, respectively [44,48]. The gaseous products evolved during thermal decomposition of surface oxygen-containing moieties were analyzed by FTIR spectroscopy.…”

Section: Surface Composition Of Modified Cmk-3 Replicamentioning

confidence: 99%

Chemically activated poly(furfuryl alcohol)-derived CMK-3 carbon catalysts for the oxidative dehydrogenation of ethylbenzene

Janus

Kuśtrowski

et al. 2014

Catalysis Today

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The surface of CMK-3 carbon, synthesized by the reversible replication of mesoporous silica (SBA-15) using poly(furfuryl alcohol) as a carbon precursor, was activated by wet oxidation with an aqueous solution of HNO 3 or H 2 O 2 . The process was performed at 50°C using solution containing different concentrations of the oxidizing agent. It was found that during the modification no significant changes in textural and structural properties of CMK-3 replica occurred. However, the treatment resulted in the formation of appreciable amounts of surface species containing oxygen. XPS and DRIFT spectroscopy allowed to identify and quantify the surface functional groups. Their stability was studied by TG-FTIR measurements. CO and CO 2 were found as main gaseous products evolved during thermal decomposition under inert atmosphere. Finally, the modified samples were tested in the catalytic oxidative dehydrogenation * Corresponding author. Tel. +48 12 6632006. Fax +48 12 6340515. E-mail address: kustrows@chemia.uj.edu.pl (P. Kuśtrowski) 2 of ethylbenzene to styrene at 350°C in the presence of oxygen as an oxidizing agent (at O 2 /ethylbenzene molar ratio of 1.0 and 3.0). At the beginning of the catalytic run, the highest styrene yield and selectivity was achieved at the lower O 2 content over the catalysts treated with nitric acid. Nevertheless, all studied catalysts underwent a gradual deactivation due to coke formation and changes in the distribution of surface moieties.

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“…Significant efforts have been devoted to the surface functionalization of carbon materials, and wet oxidation treatment is one of the most convenient and simplest methods. 13 Though it has been widely reported that nitric acid oxidation can attach large amounts of oxygencontaining groups to the carbon surface, structural collapse of the ordered framework might happen inevitably during the harsh oxidation condition.…”

Section: Results and Discussion Synthesis And Characterization Of Omcmentioning

confidence: 99%

Hydrophilic mesoporous carbon nanospheres with high drug-loading efficiency for doxorubicin delivery and cancer therapy

Wang¹,

Li²,

Ma³

et al. 2016

IJN

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In this study, a highly effective transmembrane delivery vehicle based on PEGylated oxidized mesoporous carbon nanosphere (oMCN@PEG) was successfully fabricated in a facile strategy. oMCN@PEG exhibited a narrow size distribution of 90 nm, excellent hydrophilicity, good biocompatibility, and a very high loading efficiency for doxorubicin (DOX). The drug system (oMCN@DOX@PEG) exhibited excellent stability under neutral pH conditions, but with dramatic releases of DOX at reduced pH conditions. Pharmacokinetics study revealed that oMCN@DOX@PEG could prolong the circulation of DOX in the blood stream. The endocytosis, cytotoxicity, and anticancer effect in vitro and in vivo of the drug-loaded nanoparticles were also evaluated. Our results showed that the nanoparticles efficiently penetrated the membrane of tumor cells, subsequently released drugs, and efficiently inhibited the growth of cancer cells both in vitro and in vivo. Especially, oMCN@DOX@PEG also exhibited significant antimetastasis effect in advanced stage of malignant cancer, improving the survival time of tumor-bearing mice. The results suggested that oMCN@PEG might be a promising anticancer drug delivery vehicle for cancer therapy.

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Surface modification of nanocast ordered mesoporous carbons through a wet oxidation method

Cited by 53 publications

References 39 publications

Nanostructured mesoporous carbons: Tuning texture and surface chemistry

Nanostructured mesoporous carbons: Tuning texture and surface chemistry

Chemically activated poly(furfuryl alcohol)-derived CMK-3 carbon catalysts for the oxidative dehydrogenation of ethylbenzene

Hydrophilic mesoporous carbon nanospheres with high drug-loading efficiency for doxorubicin delivery and cancer therapy

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