high surface area carbon nanotubes prepared by chemical activation

High surface area activated carbon prepared from cassava ...

Bioresource Technology 97 (2006) 734–739 High surface area activated carbon prepared from cassava peel by chemical activation Y. Sudaryanto, S.B. Hartono, W. Irawaty, H. Hindarso, S. Ismadji * Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya 60114, Indonesia Received 15 January 2004; received in revised form 29 March 2005; …

High surface area carbon nanotubes prepared by chemical ...

The specific surface areas of the carbon nanotubes were increased remarkably by activation -from 410.7 m 2 /g to 652.8 m 2 /g for SWNT and from 157.3 m 2 /g to 422.6 m 2 /g for MWNT.

Preparation and Characterization of Activated Carbon …

The surface area and pore volume increased proportionally to the KOH/carbon weight ratio up to its value of about 3. A surface area greater than 1000 m. 2 /g was obtained at a KOH carbon ratio of about 3.The reaction of KOH and surface carbon (C) occurring during activation process is as follows [13] : 4 KOH + C ==> K. 2. CO. 3 + K. 2. O + 2H2 (3)

Frontiers | MnO2/Carbon Composites for Supercapacitor ...

Synthesis And Properties of MnO 2 /Carbon Composites for Supercapacitor MnO 2 /Carbon Nanotube Composites. CNTs are one-dimensional quantum materials with a hollow tubular structure and excellent electrical conductivity, large specific surface area, and high chemical stability (Lu et al., 2019) om the perspective of the wall structure, it can be divided into single-walled CNTs (SWCNTs) and ...

Electrochemical activation to enhance the volumetric ...

In recent years, the floating catalyst chemical vapor deposition (FCCVD) method has established itself as one of the most commercially viable methods to produce carbon nanotubes (CNTs). However, at the final stage of the FCCVD process, densification of the web of CNTs to form a sheet causes a significant loss in the active surface area of the CNTs.

Adsorption of Cr(VI) from aqueous phase by high surface ...

2017-7-1 · Prepared activated carbon from fox nutshell by chemical activation with ZnCl 2 in the N 2 atmosphere was used for Cr(VI) removal from aqueous solution. Activated carbon was produced at 600 °C activation temperature with a 2.0 impregnation ratio for 1 h of activation time has been found as 2869 m 2 /g, 1.96 and 1.68 cm 3 /g of highest BET surface area, total pore volume and micropore volume ...

(PDF) Chemical activation of carbon nanofibers and …

The change in the specific surface area and mass loss were used to analyze the interaction of carbon nanofibers and multilayer carbon nanotubes produced by catalytic pyrolysis of CH4 with the alkalis.

High surface area activated carbon prepared from cassava ...

High surface area activated carbon prepared from cassava peel by chemical activation Bioresour Technol. 2006 Mar;97(5):734-9. doi: 10.1016/j.biortech.2005.04.029. Epub 2005 Jun 15. Authors Y Sudaryanto 1, S B Hartono, W Irawaty, H Hindarso, S Ismadji. Affiliation 1 Department of ...

Methods for preparation and activation of activated …

2020-1-4 · Activated carbon refers to a wide range of carbonised materials of high degree of porosity and high surface area. Activated carbon has many applications in the environment and industry for the removal, retrieval, separation and modification of various compounds in liquid and gas phases. Selection of the chemical activator agent is a major step controlling the performance and applicability of ...

High surface area rice husk‐based activated carbon ...

2015-7-29 · Then the morphology, pore structure, and surface chemistry of rice husk-based activated carbon (RAC) were analyzed. When using 5 mol/L ZnCl 2 and 0.4 mol/L CuCl 2 at the carbonization temperature of 500°C for 1.5 h, the BET surface area of the produced activated carbon was as high as 1924 m 2 /g and the total pole volume reached 1.493 cm 3 /g.

(PDF) High surface area carbon nanotubes prepared by ...

High surface area carbon nanotubes prepared by chemical activation

Fullerenes, Nanotubes and Carbon Nanostructures ...

Fullerenes, Nanotubes and Carbon Nanostructures,,,,,,PubMed,

Production and characterisation of activated carbon and ...

The AC produced after the two activation steps showed a surface area as high as 833 m 2 g-1 with a pore volume of 0.44 cm 3 g-1, where the raw material of PPW showed a surface area < 4 m 2 g-1. This can help aid and facilitate the concept of the circular economy by effectively up-cycling and valorising waste lignocellulosic biomass such as ...

E. Raymundo-Piero, D. Cazorla-Amorós, A. LinaresSolano, S ...

E. Raymundo-Piero, D. Cazorla-Amorós, A. LinaresSolano, S. Delpeux, E. Frackowiak, K. Szostak and F. Béguin, "High Surface Area Carbon Nanotubes Prepared by ...

KOH activation of carbon nanofibers

High surface area activated carbon prepared from cassava ...

Hierarchical structure N, O-co-doped porous …

and energy storage devices, limited by their speci c surface area. Recently, coal-based porous carbons with a high speci c surface area have been prepared by chemical activation. For example, through KOH activation, porous carbon with phrase surface area as high as 3000 m2 g 1 can be achieved.12 However, porous carbon as a supercapacitor ...

Ultrahigh surface area carbon from carbonated beverages ...

2015-5-11 · @article{osti_1214034, title = {Ultrahigh surface area carbon from carbonated beverages. Combining self-templaing process and in situ activation}, author = {Zhang, Pengfei and Zhang, Zhiyong and Chen, Jihua and Dai, Sheng}, abstractNote = {Ultrahigh surface area carbons (USACs, e.g., >2000 m2/g) are attracting tremendous attention due to their outstanding performance in energy-related ...

Adsorptive and Electrochemical Properties of Carbon ...

2021-1-21 · For example, activated carbon that is formed by subjecting turbostratic carbon to a chemical reaction (activation) that consumed a part of the carbon. The activation results in surface pores, which cause the specific surface area to be high, as needed for fluid purification through the adsorption of the molecules to be removed.

Chemical Functionalization of Carbon Nanotubes with ...

2021-3-30 · Carbon nanotubes (CNTs), the one-dimensional allotropes of carbon, have attracted noteworthy research interest since their discovery in 1991 owing to their large aspect ratio, low mass density, and unique chemical, physical, and electronic properties that provide exciting possibilities for nanoscale applications. Nonetheless, two major issues should be considered when working with this …

High-surface-area and high-nitrogen-content carbon ...

2017-7-1 · 1. Introduction. High-surface-area porous carbon materials have attracted widespread interest in energy storage,, catalysis, and adsorption,,, owning to their unique characteristics including developed porosity, good electrical conductivity, and excellent thermal and chemical stability in combination with availability.Although a variety of methods such as direct pyrolysis,, hard ...

Preparation of high-surface area activated carbons from ...

In this study, an activated carbon with high-surface area was prepared from Paulownia (P. tomentose) wood by chemical activation with ZnCl2. The influences of carbonization temperature and ...

High surface area activated carbon prepared from cassava ...

2006-3-1 · High surface area activated carbons were prepared from Indonesian cassava peel with chemical activation. As the activating agent, potassium hydroxide was used. From this study it was found that cassava peel is a good precursor for activated carbon preparation.

Preparation of High Surface Area Oxidized Activated …

2018-11-23 · A peanut shell-derived oxidized activated carbon (OAC) with high surface area was prepared by zinc chloride (ZnCl 2) chemical activation and subsequent nitric acid oxidation.OAC was characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and N 2 adsorption-desorption. The results showed that OAC had the surface area of 1807 m 2 g −1, …

[PDF] Preparation of Activated Carbon Derived from Rice ...

Abstract High surface area activated carbons were prepared by simple thermo-chemical activation of Jatropha curcas fruit shell with NaOH as a chemical activating agent. The effects of …

Lignocellulosic-Based Activated Carbon Prepared by a ...

The chemical activation method involves impregnation of the precursor with a chemical agent such as H 3 PO 4, ZnCl 2, NaOH, KOH, etc. and then activated at a comparatively high temperature [19] [20] [21] . The chemical activation method is advantageous for producing very high surface area AC [19] [20] [21] .

High surface area activated carbon prepared from cassava ...

2005-6-15 · High surface area activated carbon prepared from cassava peel by chemical activation. Y Sudaryanto Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya 60114, Indonesia.

High surface area rice husk‐based activated carbon ...

2016-1-1 · Read "High surface area rice husk‐based activated carbon prepared by chemical activation with Z n C l 2 ‐ C u C l 2 composite activator, Environmental Progress & Sustainable Energy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

(PDF) Preparation of high surface area activated carbon ...

It was found that the activated carbon had a well-developed micropore structure and BET surface area about 2010 m 2/g prepared from PET wastes at 975° C and 240 min holding time of activation ...

Rational design of high-surface-area carbon nanotube ...

All-carbon-based carbon nanotube (CNT)/microporous carbon core-shell nanocomposites, in which a CNT as the core and high-surface-area microporous carbon as the shell, have been prepared by in situ resorcinol-formaldehyde resin coating of CNTs, followed by carbonization and controlled KOH activation.

Synthesis of porous carbon nanotubes/activated carbon ...

2014-3-1 · In this paper, carbon nanotubes (CNTs) were added to activated carbon to enhance the mesopores. At first, different amounts of CNTs were added to phenolic resin and composite spheres were synthesized by suspension polymerization. Then, by carbonizing these spheres at 600°C followed by steam activation at 850°C for more than 90 min, we prepared highly developed porous …

Hierarchical structure N, O-co-doped porous …

The obtained porous carbon exhibited a 3D interconnected hierarchical porous structure with high phrase surface area (2164 m 2 g −1), high N/O doping content (about 8.0 at% for N, and 3.0 at% for O), outstanding specific capacitance (287 and 183 F g −1 at the current densities of 0.2 and 50 A g −1 in a 6 mol L −1 KOH electrolyte ...

High surface area porous carbons produced by steam ...

The as-prepared SAGA exhibits a high Brunauer–Emmett–Teller specific surface area (830–1230 m 2 g −1), an abundant large pore volume (2.2–3.6 cm 3 g −1), and excellent thermal stability. The SAGA shows excellent adsorption capabilities for toluene (710 …

Upcycling brewer''s spent grain waste into activated carbon ...

2019-9-30 · The AC produced showed a surface area as high as 692.3 m 2 g −1 with a pore volume of 0.44 cm 3 g −1. This can help aid and facilitate the circular economy by effectively upcycling and valorizing waste lignocellulosic biomass to high surface area AC and subsequently, multi-walled carbon nanotubes (MWCNTs).