scholarly journals Highly porous carbon materials for adsorbent from water hyacinth via hydrothermal carbonization

2020 ◽  
Author(s):  
Sirayu Chanpee ◽  
Nattaya Suksai ◽  
Napat Kaewtrakulchai ◽  
Sutee Chutipaijit ◽  
Masayoshi Fuji ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Water Hyacinth ◽  
Carbon Materials ◽  
Hydrothermal Carbonization ◽  
Porous Carbon Materials ◽  
Highly Porous

scholarly journals Porous Carbon Materials Obtained by the Hydrothermal Carbonization of Orange Juice

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 655 ◽  
Author(s):  
Francesco Veltri ◽  
Francesca Alessandro ◽  
Andrea Scarcello ◽  
Amerigo Beneduci ◽  
Melvin Arias Polanco ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Photoelectron Spectroscopy ◽  
Orange Juice ◽  
Carbon Materials ◽  
Sorption Isotherms ◽  
Hydrothermal Carbonization ◽  
Carbon Quantum Dots ◽  
Energy Storage Devices ◽  
X Ray ◽  
Porous Carbon Materials

Porous carbon materials are currently subjected to strong research efforts mainly due to their excellent performances in energy storage devices. A sustainable process to obtain them is hydrothermal carbonization (HTC), in which the decomposition of biomass precursors generates solid products called hydrochars, together with liquid and gaseous products. Hydrochars have a high C content and are rich with oxygen-containing functional groups, which is important for subsequent activation. Orange pomace and orange peels are considered wastes and then have been investigated as possible feedstocks for hydrochars production. On the contrary, orange juice was treated by HTC only to obtain carbon quantum dots. In the present study, pure orange juice was hydrothermally carbonized and the resulting hydrochar was filtered and washed, and graphitized/activated by KOH in nitrogen atmosphere at 800 °C. The resulting material was studied by transmission and scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and nitrogen sorption isotherms. We found porous microspheres with some degree of graphitization and high nitrogen content, a specific surface of 1725 m2/g, and a pore size distribution that make them good candidates for supercapacitor electrodes.

scholarly journals A hierarchical porous P-doped carbon electrode through hydrothermal carbonization of pomelo valves for high-performance supercapacitors

2020 ◽  
Vol 2 (8) ◽  
pp. 3284-3291
Author(s):  
Jing Huang ◽  
Jie Chen ◽  
Zhenyao Yin ◽  
Jinggao Wu
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Hydrothermal Carbonization ◽  
Carbon Electrode ◽  
Porous Carbon Materials ◽  
Hierarchical Porous

Porous carbon materials are synthesized from pomelo valves by the hydrothermal activation of H3PO4 followed by simple carbonization.

The suitability of infinite slit-shaped pore model to describe the pores in highly porous carbon materials

Carbon ◽  
2016 ◽  
Vol 100 ◽  
pp. 617-624 ◽  
Author(s):  
H. Kurig ◽  
M. Russina ◽  
I. Tallo ◽  
M. Siebenbürger ◽  
T. Romann ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
Pore Model ◽  
Porous Carbon Materials ◽  
Highly Porous

scholarly journals Obtaining of high porous carbon material using thermochemical conversion of wood biomass under pressure

2021 ◽  
Vol 66 (1) ◽  
pp. 76-83
Author(s):  
S. V. Vasilevich ◽  
M. V. Malko ◽  
D. V. Degterov ◽  
A. N. Asadchyi
Keyword(s):  
Water Vapor ◽  
Carbon Content ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Activated Carbons ◽  
Raw Materials ◽  
Thermochemical Conversion ◽  
Physical Activation ◽  
Porous Carbon Materials ◽  
Highly Porous

A method is presented for obtaining activated carbons (highly porous carbon materials) based on plant (wood) raw materials using a developed and manufactured experimental setup, consisting of a steam generator, a superheater, a pyrolysis and activation chamber and a cooler with a heat exchanger with forced convection. The analysis of the features of chemical and physical activation of charcoal, obtained by pyrolysis of wood raw materials, is carried out, and a conclusion is made about the advantage of physical activation, based on the use of water vapor as an activating agent. A description of the results of experimental studies carried out using the developed installation is given. These results confirm the conclusions of other studies that excessive pressure increases the mass yield of solid products formed during the thermochemical conversion of plant biomass. It was found that an increase in pressure, at which pyrolysis occurs, leads to an increase in the carbon content in charcoal. So, with an increase in pressure at which pyrolysis was carried out, from 1 to 8 atm, the carbon content in charcoal increased from 88.3 to 93.7 wt.%. Data on the efficiency of physical activation of solid products of pyrolysis of woody biomass using water vapor are presented and a conclusion is made that this direction is promising in the development of the foundations for the production of highly porous carbon materials.

Highly porous carbon materials filled with gold and manganese oxide nanoparticles for electrochemical use

2015 ◽  
Vol 249 ◽  
pp. 220-227 ◽  
Author(s):  
G.Yu. Simenyuk ◽  
Yu.A. Zakharov ◽  
N.V. Pavelko ◽  
V.G. Dodonov ◽  
V.M. Pugachev ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Oxide Nanoparticles ◽  
Manganese Oxide Nanoparticles ◽  
Porous Carbon Materials ◽  
Highly Porous

Polyacrylonitrile-based highly porous carbon materials for exceptional hydrogen storage

2019 ◽  
Vol 44 (41) ◽  
pp. 23210-23215 ◽  
Author(s):  
Yao Li ◽  
Yong Xiao ◽  
Hanwu Dong ◽  
Mingtao Zheng ◽  
Yingliang Liu
Keyword(s):  
Hydrogen Storage ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Porous Carbon Materials ◽  
Highly Porous

Component Degradation-Enabled Preparation of Biomass-Based Highly Porous Carbon Materials for Energy Storage

2019 ◽  
Vol 7 (18) ◽  
pp. 15259-15266 ◽  
Author(s):  
Yao Li ◽  
Binshan Mou ◽  
Yeru Liang ◽  
Hanwu Dong ◽  
Mingtao Zheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Porous Carbon Materials ◽  
Highly Porous
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