scholarly journals Meso/Microporous Carbons from Conjugated Hyper-Crosslinked Polymers Based on Tetraphenylethene for High-Performance CO2 Capture and Supercapacitor

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 738
Author(s):  
Mohamed Gamal Mohamed ◽  
Mahmoud M. M. Ahmed ◽  
Wei-Ting Du ◽  
Shiao-Wei Kuo
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
Total Pore Volume ◽  
Specific Area ◽  
High Specific Capacitance ◽  
Koh Activation ◽  
Co2 Uptake ◽  
Crosslinked Polymers ◽  
Good Thermal Stability ◽  
Porous Carbon Materials

In this study, we successfully synthesized two types of meso/microporous carbon materials through the carbonization and potassium hydroxide (KOH) activation for two different kinds of hyper-crosslinked polymers of TPE-CPOP1 and TPE-CPOP2, which were synthesized by using Friedel–Crafts reaction of tetraphenylethene (TPE) monomer with or without cyanuric chloride in the presence of AlCl3 as a catalyst. The resultant porous carbon materials exhibited the high specific area (up to 1100 m2 g−1), total pore volume, good thermal stability, and amorphous character based on thermogravimetric (TGA), N2 adsoprtion/desorption, and powder X-ray diffraction (PXRD) analyses. The as-prepared TPE-CPOP1 after thermal treatment at 800 °C (TPE-CPOP1-800) displayed excellent CO2 uptake performance (1.74 mmol g−1 at 298 K and 3.19 mmol g−1 at 273 K). Furthermore, this material possesses a high specific capacitance of 453 F g−1 at 5 mV s−1 comparable to others porous carbon materials with excellent columbic efficiencies for 10,000 cycle at 20 A g−1.

scholarly journals Porous carbons derived from zinc-based nitrogen heterocyclic complexes combined with KOH activation for use as supercapacitors

2020 ◽  
pp. 174751982094336
Author(s):  
Shuai Ru ◽  
Zhaoquan Ai
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
High Specific Capacitance ◽  
Koh Activation ◽  
Rate Performance ◽  
Porous Carbon Materials ◽  
Ion Storage ◽  
Method Of Solution ◽  
N Doping ◽  
Coordination Ability

2,2’-Bipyridine with strong coordination ability for metal ions was used to prepare N-doped porous carbon materials by a facile method of solution agitation and annealing, with KOH as the activated solvent. Applied to supercapacitors, these porous carbon materials exhibit high specific capacitance and outstanding rate performance, which are attributed to their larger specific surface area, richer pore structure, and N-doping after KOH activation, leading to fast electron transport and increased ion storage in the unique architecture.

scholarly journals Carbonization and Preparation of Nitrogen-Doped Porous Carbon Materials from Zn-MOF and Its Applications

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 264 ◽  
Author(s):  
Kulandaivel Sivasankar ◽  
Souvik Pal ◽  
Murugan Thiruppathi ◽  
Chia-Her Lin
Keyword(s):  
Detection Limit ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Metal Organic Framework ◽  
Total Pore Volume ◽  
Electrochemical Sensing ◽  
Co2 Uptake ◽  
Nitrogen Doped ◽  
Metal Organic ◽  
Optimized Conditions

Nitrogen-doped porous carbon (NPC) materials were successfully synthesized via a Zn-containing metal-organic framework (Zn-MOF). The resulting NPC materials are characterized using various physicochemical techniques which indicated that the NPC materials obtained at different carbonization temperatures exhibited different properties. Pristine MOF morphology and pore size are retained after carbonization at particular temperatures (600 °C-NPC600 and 800 °C-NPC800). NPC800 material shows an excellent surface area 1192 m2/g, total pore volume 0.92 cm3/g and displays a higher CO2 uptake 4.71 mmol/g at 273 k and 1 bar. Furthermore, NPC600 material displays good electrochemical sensing towards H2O2. Under optimized conditions, our sensor exhibited a wide linearity range between 100 µM and 10 mM with a detection limit of 27.5 µM.

Homogeneous sulphur-doped composites: porous carbon materials with unique hierarchical porous nanostructure for super-capacitor application

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 84847-84853 ◽  
Author(s):  
Jie Zhang ◽  
Zhanxu Yang ◽  
Xiaorong Wang ◽  
Tieqiang Ren ◽  
Qingdong Qiao
Keyword(s):  
Layered Double Hydroxide ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Koh Activation ◽  
Two Dimensional ◽  
Super Capacitor ◽  
Porous Carbon Materials ◽  
Hierarchical Porous ◽  
Porous Nanostructure ◽  
Double Hydroxide

Homogeneous sulphur-doped porous carbon materials with a unique hierarchical porous nanostructure have been prepared by the combination of the two-dimensional interlayer confinement effect of a layered double hydroxide (LDH) and KOH activation method.

scholarly journals Adsorption enhancement of nitrogen gas by atomically heterogeneous nanospace of boron nitride

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 838-846
Author(s):  
Jun Kimura ◽  
Takahiro Ohkubo ◽  
Yuta Nishina ◽  
Koki Urita ◽  
Yasushige Kuroda
Keyword(s):  
Boron Nitride ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Heterogeneous Surfaces ◽  
Nitrogen Gas ◽  
Porous Carbon Materials

Porous BN with atomically heterogeneous surfaces can more strongly adsorb dinitrogen molecules than typical porous carbon materials.

scholarly journals Celery-derived porous carbon materials for superior performance supercapacitor

2021 ◽  
Author(s):  
Sirui Liu ◽  
Ya ping Xu ◽  
Jinggao Wu ◽  
Jing Huang
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
High Energy ◽  
Cycle Life ◽  
Superior Performance ◽  
Energy Output ◽  
Next Generation ◽  
Porous Carbon Materials ◽  
Long Cycle Life ◽  
Sustainable Materials

Supercapacitors are of paramount importance for next-generation applications, demonstrating high energy output, an ultra-long cycle life and utilizing green and sustainable materials. Herein, we utilize celery, a common biomass from...

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