KIT‐6 Three Dimensional Template Derived Mesoporous Carbon for Oxygen Reduction Reaction: Effect of Template Removal on Catalytic Activity

Duraisamy, Velu; Palanivel, Soundarrajan; Thangamuthu, R.; Kumar, Sakkarapalayam Murugesan Senthil

doi:10.1002/slct.201802539

Cited by 9 publications

(9 citation statements)

References 68 publications

(81 reference statements)

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“…6d ) indicates that these spherical particles were polycrystalline, with predominantly graphitic carbon corresponding to JCPDS 01-075-0444. 46 It also indicates that this sample possibly still contained some residues of unreacted raw materials, i.e. urea and citric acid.…”

Section: Resultsmentioning

confidence: 94%

Solid-state nitrogen-doped carbon nanoparticles with tunable emission prepared by a microwave-assisted method

et al. 2021

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Section: Resultsmentioning

confidence: 94%

Solid-state nitrogen-doped carbon nanoparticles with tunable emission prepared by a microwave-assisted method

et al. 2021

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“…It is also noticed that the etching of commercial carbons or granules facilitated for enhancing surface defective sites ,. It is worth to mention that very recently our group have been identified that both morphological and electrocatalytic properties of KIT‐6 derived OMC are affected by their etching process . However, KIT‐6 and SBA‐15 are entirely different materials with respect to their wall thickness and internal architecture.…”

Section: Introductionsupporting

confidence: 61%

Investigation on Template Etching Process of SBA‐15 Derived Ordered Mesoporous Carbon on Electrocatalytic Oxygen Reduction Reaction

et al. 2019

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Ordered mesoporous carbon (OMC) is a promising material for oxygen reduction reaction (ORR) in fuel cells owing to its high surface area and more number of catalytic active sites. Herein, OMC was synthesized by hard template method, i. e., nanocasting of sacrificial silica template (SBA-15) and then the sacrificial template was abolished using three different etching chemicals namely, hydrofluoric acid (HF), sodium hydroxide (NaOH) and polyvinylidene fluoride (PVDF) respectively, in order to study the etching effect. The etched OMCs derived from the SBA-15 template was confirmed by various characterization techniques. In OMC, the porous nature, surface morphology and defect density changes with respect to etching chemicals were evidently determined. From the electrochemical studies, it has been concluded that the NaOH etched OMC showed higher electrocatalytic activity than others by exhibiting more positive onset (0.83 V), half-wave potential (0.75 V), high current density (3.3 mA/cm 2 ), Tafel slope (83 mV/ dec) and n-value (2.4). Eventually, the electrochemical impedance study (EIS) was performed to determine the charge transfer resistance (R ct ) of various etched OMCs and has been found that NaOH etched OMC shows the lowest R ct value due to the presence of more defective sites and result in enhancing oxygen adsorption during ORR.[a] V.

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“…All samples revealed good sorption ability, with evident improvement following the functionalization with the amine groups. Thanks to a high specific surface area (834 m 2 g −1 ) and pore volume (1.09 cm 3 g −1 ), pristine ordered mesoporous carbon by itself has accessible active sites which allow for the effective binding of adsorbate molecules [ 43 ]. Thus, the C KIT-6 sample even without grafted amines revealed a maximum adsorption capacity of ~124 mg g −1 , which after functionalization increases according to 148 mg g −1 for C KIT-6 –EDA, 158 mg g −1 for C KIT-6 –DTA, 160 mg g −1 for C KIT-6 –TTA and 181 mg g −1 for C KIT-6 –TPA.…”

Section: Resultsmentioning

confidence: 99%

Amine-Grafted Mesoporous Carbons as Benzocaine-Delivery Platforms

et al. 2021

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Smart porous carriers with defined structure and physicochemical properties are required for releasing the therapeutic drug with precise control of delivery time and location in the body. Due to their non-toxicity, ordered structure, and chemical and thermal stability, mesoporous carbons can be considered modern carriers for active pharmaceutical ingredients whose effectiveness needs frequent dosing algorithms. Here, the novel benzocaine delivery systems based on ordered mesoporous carbons of the cubic structure were obtained with the use of a hard template method and functionalization with amine groups at 40 °C for 8 h. It has been shown that amine grafting strongly modifies the surface chemistry and textural parameters of carbons. All samples indicated good sorption ability towards benzocaine, with evident improvement following the functionalization with the amine groups. The sorption capacity and drug release kinetics were strongly affected by the porosity of carbon carriers and the surface functional groups. The smallest amount of benzocaine (~12%) was released from pristine mesoporous carbon, which could be correlated with strong API–carrier interactions. Faster and more efficient release of the drug was observed in the case of triethylenetetramine modified carbon (~62%). All benzocaine delivery platforms based on amine-grafted mesoporous carbons revealed high permeability through the artificial membrane.

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KIT‐6 Three Dimensional Template Derived Mesoporous Carbon for Oxygen Reduction Reaction: Effect of Template Removal on Catalytic Activity

Cited by 9 publications

References 68 publications

Solid-state nitrogen-doped carbon nanoparticles with tunable emission prepared by a microwave-assisted method

Solid-state nitrogen-doped carbon nanoparticles with tunable emission prepared by a microwave-assisted method

Investigation on Template Etching Process of SBA‐15 Derived Ordered Mesoporous Carbon on Electrocatalytic Oxygen Reduction Reaction

Amine-Grafted Mesoporous Carbons as Benzocaine-Delivery Platforms

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