Highly graphitic carbon nanosheets synthesized over tailored mesoporous molecular sieves using acetylene by chemical vapor deposition method

Atchudan, Raji; Perumal, Suguna; Edison, Thomas Nesakumar Jebakumar Immanuel; Lee, Yong Rok

doi:10.1039/c5ra15288g

Cited by 61 publications

(20 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates well-shaped pores with a hexagonal shape. Similarly shaped isotherms also indicate similar pore sizes [56]. Thus, the similar position of the adsorption branch inflection of every isotherm suggests that all Ti-MCM-41 materials have similar pore sizes.…”

Section: Characteristics Of Catalystsmentioning

confidence: 61%

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

et al. 2019

View full text Add to dashboard Cite

Titanium-containing mesoporous silica catalysts with different Ti contents were prepared by the sol–gel method, whereby the molar ratios of silicon to titanium in the crystallization gel amounted to, respectively, 40:1, 30:1, 20:1 and 10:1. The produced Ti-MCM-41 materials were characterized by the following instrumental methods: XRD, UV-Vis, FT-IR, SEM, and XRF. Textural parameters were also determined for these materials by means of the N2 adsorption/desorption method. The activities of these catalysts were investigated in the α-pinene isomerization process. The most active catalyst was found to be the material with the molar ratio of Si:Ti equal to 10:1, which contained 12.09 wt% Ti. This catalyst was used in the extended studies on the α-pinene isomerization process, and the most favorable conditions for this reaction were found to be temperature of 160 °C, reaction time of 7 h, with the catalyst composition of 7.5 wt% relative to α-pinene. These studies showed that the most active catalyst, at the best reaction conditions, allowed for the attainment of 100% conversion of α-pinene over a period of 7 h. After this time the selectivities (in mol%) of the main products were as follows: camphene (35.45) and limonene (21.32). Moreover, other products with lower selectivities were formed: γ-terpinene (4.38), α-terpinene (8.12), terpinolene (11.16), p-cymene (6.61), and α-phellandrene (1.58).

show abstract

Section: Characteristics Of Catalystsmentioning

confidence: 61%

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In addition, pure MCM‐41 shows an intense band at 1080 cm −1 due to SiO asymmetric stretching vibrations . Other absorption bands found at 440 cm −1 and 3400 cm −1 , which attributed to SiOSi bending of surface silanols and adsorbed water molecules, respectively . According to the results obtained from FTIR of the composite hydrogels, the CH/PVP/MCM‐41 composite hydrogel films mainly exhibited the bands of CH/PVP due to their high content in the samples.…”

Section: Resultsmentioning

confidence: 84%

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

et al. 2018

View full text Add to dashboard Cite

The aim of this study is to characterize and investigate the effects of the Mobil Composition of Matter No. 41 (MCM-41) concentrations (0.5, 1, 3, 5, and 10 wt%) on structural, thermal, wettability, water content, oxygen (O 2 ) permeability, and swelling properties as well as morphological characteristics of chitosan/polyvinylpyrrolidone/MCM-41 (CH/PVP/MCM-41) composite hydrogel films. In addition, hydrolytic degradability, optic transmittance, and antibacterial properties of composite hydrogels films are determined as in vitro. With increasing of MCM-41 content, the composite hydrogels showed higher thermal stability, as expected. The morphologic properties of the composite hydrogel films are studied using scanning electron microscope (SEM) technique that provide evidence for good miscibility of CH, PVP, and MCM-41. The swelling and water-absorbing properties of the composite hydrogel films are significantly improved because of enhanced hydrophilic profile. Furthermore, the antimicrobial properties of the prepared composite hydrogel films are studied against Bacillus subtilis, Escherichia coli, and Candida albicans yeast. The results showed excellent antibacterial behavior of the composite hydrogel films. The study clearly demonstrates that the prepared CH/PVP/MCM-41 composite hydrogel films may be used as a promising candidate material in various fields such as drug delivery, wound healing material, and adsorbent materials.

show abstract

“…The former is due the characteristic D band and the latter is attributed to the G band of carbon material. 31 The crystallinity of the carbon materials is usually evaluated by the peak intensity ratio between the D and G bands (I D /I G ). 31 Here, the I D /I G value is about 0.85, indicating the presence of large amount of graphitic carbon.…”

Section: Synthesis and Characterization Of The Hc-mnmentioning

confidence: 99%

“…31 The crystallinity of the carbon materials is usually evaluated by the peak intensity ratio between the D and G bands (I D /I G ). 31 Here, the I D /I G value is about 0.85, indicating the presence of large amount of graphitic carbon. 27 The XRD patterns of the SC-Mn and HC-Mn are shown in Fig.…”

Section: Synthesis and Characterization Of The Hc-mnmentioning

confidence: 99%

A facile soft template method to synthesize hollow carbon and MnO_x composite particles for effective methylene blue degradation

Meng

et al. 2018

RSC Adv.

View full text Add to dashboard Cite

show abstract

Highly graphitic carbon nanosheets synthesized over tailored mesoporous molecular sieves using acetylene by chemical vapor deposition method

Abstract: Graphitic carbon nanosheets (GCNS) were synthesized using mesoporous Ti-MCM-41 molecular sieves as catalytic template and acetylene as carbon precursor following chemical vapor deposition method, under atmospheric pressure.

Cited by 61 publications

References 45 publications

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

A facile soft template method to synthesize hollow carbon and MnO_x composite particles for effective methylene blue degradation

Contact Info

Product

Resources

About

Highly graphitic carbon nanosheets synthesized over tailored mesoporous molecular sieves using acetylene by chemical vapor deposition method

Abstract: Graphitic carbon nanosheets (GCNS) were synthesized using mesoporous Ti-MCM-41 molecular sieves as catalytic template and acetylene as carbon precursor following chemical vapor deposition method, under atmospheric pressure.

Cited by 61 publications

References 45 publications

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

Influence of the Titanium Content in the Ti-MCM-41 Catalyst on the Course of the α-Pinene Isomerization Process

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

A facile soft template method to synthesize hollow carbon and MnOx composite particles for effective methylene blue degradation

Contact Info

Product

Resources

About

A facile soft template method to synthesize hollow carbon and MnO_x composite particles for effective methylene blue degradation