scholarly journals Preoxidation-assisted nitrogen enrichment strategy to decorate porous carbon spheres for catalytic adsorption/oxidation of methyl mercaptan

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 37644-37656
Author(s):  
Changming Zhang ◽  
Yaqi Wang ◽  
Xiaochao Zhang ◽  
Rongxian Wang ◽  
Lifang Kou ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Suspension Polymerization ◽  
High Surface ◽  
High Surface Area ◽  
Nitrogen Enrichment ◽  
Carbon Spheres ◽  
Steam Activation ◽  
Alkyl Phenols ◽  
Porous Carbon Spheres ◽  
Enrichment Strategy

Porous carbon spheres with high surface area and microporous structure were synthesized from alkyl phenols and formaldehyde via suspension polymerization and steam activation.

Ultrafine Pt–Ni nanoparticles in hollow porous carbon spheres for remarkable oxygen reduction reaction catalysis

2021 ◽  
Author(s):  
Xian-Kai Wan ◽  
Gabor Samjeské ◽  
Hirosuke Matsui ◽  
Chaoqi Chen ◽  
Satoshi Muratsugu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Ni Nanoparticles ◽  
Carbon Spheres ◽  
Oxygen Reduction Reaction Activity ◽  
Porous Carbon Spheres

Small-sized Pt–Ni nanoparticles were synthesized into hollow porous carbon spheres (HPCS) under molecule assistance. Pt–Ni nanoparticle/HPCS prepared in presence of 2,2′-Dipyridylamine showed excellent oxygen reduction reaction activity/durability.

An interfacial self-assembly strategy to fabricate graphitic hollow porous carbon spheres for supercapacitor electrodes

Carbon ◽  
2021 ◽  
Vol 182 ◽  
pp. 860
Author(s):  
Xiao-hua Zhang ◽  
Xin-yu Gan ◽  
Bao-sheng Liu ◽  
Xiao-yan Yan ◽  
Xin-xin Zhao
Keyword(s):  
Porous Carbon ◽  
Self Assembly ◽  
Carbon Spheres ◽  
Assembly Strategy ◽  
Porous Carbon Spheres

scholarly journals Highly Porous Carbon Materials from Biomass by Chemical and Carbonization Method: A Comparison Study

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Wan Nor Roslam Wan Isahak ◽  
Mohamed Wahab Mahamed Hisham ◽  
Mohd Ambar Yarmo
Keyword(s):  
Sulfuric Acid ◽  
Thermal Behavior ◽  
Surface Area ◽  
Porous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Empty Fruit Bunches ◽  
Heating Treatment ◽  
Concentrated Sulfuric Acid ◽  
Highly Porous

Porous carbon obtained by dehydrating agent, concentrated sulfuric acid (H2SO4), from biomass containing high cellulose (filter paper (FP), bamboo waste, and empty fruit bunches (EFB)) shows very high surface area and better thermal behavior. At room temperature (without heating), treatment of H2SO4removed all the water molecules in the biomass and left the porous carbon without emitting any gaseous byproducts. Brunauer-Emmett-Teller (BET) surface analysis has shown that bamboo-based carbon has good properties with higher surface area (507.8 m2/g), micropore area (393.3 m2/g), and better thermal behavior (compared to FP and EFB) without any activation or treatment process. By acid treatment of biomass, it was shown that higher carbon composition obtained from FP (85.30%), bamboo (77.72%), and EFB (76.55%) is compared to carbon from carbonization process. Under optimal sulfuric acid (20 wt.%) uses, high carbon yield has been achieved for FP (47.85 wt.%), bamboo (62.4 wt.%), and EFB (55.4 wt.%).

Preparing high surface area porous carbon from biomass by carbonization in a molten salt medium

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75728-75734 ◽  
Author(s):  
Huishan Shang ◽  
Yanjie Lu ◽  
Feng Zhao ◽  
Cong Chao ◽  
Bing Zhang ◽  
...  
Keyword(s):  
Molten Salt ◽  
Surface Area ◽  
Porous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Molten Salt Synthesis ◽  
Synthesis Process ◽  
Salt Medium ◽  
Peanut Shells

Peanut shells were transformed into porous carbon with a high surface area through a simple ZnCl2-molten salt synthesis process.

scholarly journals Dopamine Assisted One-Step Pyrolysis of Glucose for the Preparation of Porous Carbon with A High Surface Area

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 854 ◽  
Author(s):  
Hanbo Xiao ◽  
Cheng-an Tao ◽  
Yujiao Li ◽  
Xianzhe Chen ◽  
Jian Huang ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Carbon Materials ◽  
High Current Density ◽  
High Surface ◽  
High Surface Area ◽  
Energy Storage Materials ◽  
One Pot ◽  
Component Structure ◽  
Porous Carbon Materials

Herein, a facile dopamine assisted one-pot synthesis approach is proposed for the preparation of porous carbon with a specific surface area (SSA) up to 2593 m2/g through the direct pyrolysis of a mixture of glucose, NH4Cl, and dopamine hydrochloride (DAH). The glucose is adopted as the carbon source and foaming agent, NH4Cl is used as the blowing agent, and DAH is served as collaborative carbon precursor as well as the nitrogen source for the first time. The effect of dopamine on the component, structure, and SSA of the as-prepared porous carbon materials are systematically studied. The moderate addition of dopamine, which influences the condensation and polymerization of glucose, matches better with ammonium salt decomposition. The SSA of porous carbon increases first and then decreases with the increasing amount of dopamine. In our case, the porous carbon produced with 5 wt% dopamine (PC-5) achieves the maximum SSA of up to 2593 m2/g. Accordingly, it also shows the greatest electrochemical performance. The PC-5 shows a capacitance of 96.7 F/g calculated from the discharge curve at 1 A/g. It also has a good capacitive rate capacity, the specific capacitance can still maintain 80%, even at a high current density of 10 A/g. Moreover, PC-5 exhibits a good cycling stability of 98.1% capacitive retention after 1000 cycles. The proposed method may show promising prospects for preparing porous carbon materials as advanced energy storage materials, storage, and catalyst supports.

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