scholarly journals Effects of nanocasting parameters on surface area properties of PEG 400-based ordered mesoporous carbon

2019 ◽  
Author(s):  
A. Afandi ◽  
M. A. Ahmad ◽  
B. H. Hameed ◽  
A. T. Mohd Din
Keyword(s):  
Surface Area ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Peg 400 ◽  
Ordered Mesoporous

scholarly journals Enhancement in Graphitization of Ordered Mesoporous Carbon by Assistance of Soybean Oil Surfactant

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Le Thi Thu Hang ◽  
Hoang Thi Bich Thuy
Keyword(s):  
Soybean Oil ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Mesoporous Carbon ◽  
Mesoporous Structure ◽  
Ordered Mesoporous Carbon ◽  
Graphitization Degree ◽  
Ordered Mesoporous

In this work, highly ordered mesoporous graphitic carbon (G-CMK3) has been prepared successfully by a nano-casting method using sucrose as carbon source, mesoporous silica as hard template, and soybean oil as surfactant. In the absence of soybean oil surfactant, the synthesized ordered mesoporous carbon material, CMK-3, revealed a low graphitization degree with a specific surface area of 1049.1 m2/g and a high pore volume of 1.172 cm3/g.  However, with the assistance of soybean oil surfactant, the graphitization degree was improved significantly, which was confirmed by the decrease in the ID/IG intensity ratio of the D (disordered or amorphous structure) and G (graphitic structure) peaks from 0.98 to 0.83. After the synthesis in the presence of soybean oil, G-CMK3 carbon maintained the integrity of the mesoporous structure albeit with a slight decrease in its specific surface area (845.2 m2/g) as well as pore volume (0.858 cm3/g).

Highly ordered mesoporous carbon/iron porphyrin nanoreactor for the electrochemical reduction of CO2

2020 ◽  
Vol 8 (30) ◽  
pp. 14966-14974 ◽  
Author(s):  
Jaecheol Choi ◽  
Jeonghun Kim ◽  
Pawel Wagner ◽  
Jongbeom Na ◽  
Gordon G. Wallace ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Iron Porphyrin ◽  
Faradaic Efficiency ◽  
Ordered Mesoporous ◽  
Conductive Substrate ◽  
Carbon Iron ◽  
Reduction Of Co2

A highly ordered mesoporous carbon having a large surface area is utilized as a conductive substrate to immobilize iron porphyrin catalysts for electrochemical CO2 reduction, resulting in the selective conversion of aqueous CO2 into CO with 92.1% faradaic efficiency.

High surface area black TiO2 templated from ordered mesoporous carbon for solar driven hydrogen evolution

2018 ◽  
Vol 268 ◽  
pp. 162-169 ◽  
Author(s):  
Yan Xiong ◽  
Dong Gu ◽  
Xiaohui Deng ◽  
Harun Tüysüz ◽  
Maurice van Gastel ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrogen Evolution ◽  
Mesoporous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Black Tio2

Synthesis, Characterization and Physiochemical Properties of Platinum Supported on Mesoporous Carbon

2011 ◽  
Author(s):  
Salam J. J. Titinchi ◽  
Waheed Saban ◽  
Leslie Petrik ◽  
Hanna S. Abbo
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
Mesoporous Carbon ◽  
Chemical Vapour ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Pt Catalyst ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ordered Mesoporous

Ordered mesoporous carbon (OMC) has been prepared by impregnating the pores of the silica template (SBA-15) with liquid petroleum gas (LPG) or sucrose. The desired support (OMC) was obtained after dissolution with NaOH. Platinum nanoparticles were dispersed on ordered mesoporous carbons using Chemical Vapour Deposition (CVD) method and Pt(acac)2 as metal source. The resulting ordered mesoporous carbon possess a large surface area with high microporosity, and a controlled pore size distribution, High-quality carbon replicas of SBA-15 show an X-ray diffraction peak at low angle, which indicates that the structural periodicity of the (111) planes has been maintained. Their pore volume and specific surface area are high and the pore volume is almost entirely microporous. The synthesized Pt/OMC was characterized by powder X-Ray diffraction, HR-TEM, HR-SEM, EDS, thermogravimetric analysis, and nitrogen adsorption. The performance of Pt catalyst supported OMC was evaluated by electrochemical studies, which shows almost similar activity to the commercial catalyst.

High surface area ordered mesoporous carbon for high-level removal of rhodamine B

2013 ◽  
Vol 48 (22) ◽  
pp. 8003-8013 ◽  
Author(s):  
Pranav K. Tripathi ◽  
Mingxian Liu ◽  
Lihua Gan ◽  
Jiasheng Qian ◽  
Zijie Xu ◽  
...  
Keyword(s):  
Surface Area ◽  
Rhodamine B ◽  
Mesoporous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
High Level

Synthesis and Characterization of Platinum-Containing Ordered Mesoporous Carbon with High Specific Surface Area

2009 ◽  
Vol 79-82 ◽  
pp. 2035-2038 ◽  
Author(s):  
Zhi Hong Ji ◽  
Yan Bin Jiang ◽  
Hao Li ◽  
Li Ye ◽  
Wei Jian Han ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Mesoporous Carbon ◽  
Pt Nanoparticles ◽  
High Specific Surface Area ◽  
Ordered Mesoporous Carbon ◽  
Assembly Method ◽  
Ordered Mesoporous ◽  
Platinum Particles

A Pt-containing ordered mesoporous carbon with a high specific surface area was synthesized through evaporation-induced multi-constituent co-assembly method, wherein soluble resol polymer is used as the carbon precursor, silicate oligomers as the inorganic precursor, triblock copolymer as the template, and H2PtCl6•6H2O as the Pt precursor. After thermopolymerization, the template was removed by calcinations, and silica was removed by NaOH solutions. The resultant sample was characterized by X-ray diffraction, nitrogen sorption and transmission electron microscopy. The results showed that the carbon material exhibited highly ordered mesoporous structure, with a high specific surface area of 1560 m2/g, and the pore size distributions of the sample are very narrow, centering at around 6 nm; and the platinum particles with sizes of less than 8 nm were highly distributed in the carbon matrix. The high specific surface area may be ascribed to plenty of small pores inside carbon walls caused by the removal of silica from the composites. Interaction between the Pt4+ and the resin caused the Pt species to be incorporated into the framework of the resin, which was self-assembled into an ordering structure under the direction of the surfactant. After being subjected to pyrolysis at a high temperature, the Pt4+ ions were gradually reduced to form Pt nanoparticles, which were strongly imbedded in the carbon substrate and thereby thermally stable. The removal of silica may result in the exposure of Pt nanoparticles, which render Pt nanoparticles to contact easily with reactant molecules.

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