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Special Issue "Green Activated Carbons"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 31 March 2018

Special Issue Editor

Guest Editor
Dr. George Z. Kyzas

Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, Kavala, GR-65404, Greece
Website | E-Mail
Interests: synthesis of adsorbent materials; removal of pollutants from aqueous wastewaters; activated carbons; characterization of materials; adsorption and transportation phenomena

Special Issue Information

Dear Colleagues,

Activated carbons are considered to be the most successful adsorbent materials due to their high adsorption capacity for the majority of pollutants (dyes, heavy metals, pharmaceuticals, phenols, etc.). They possess large surface areas, and different surface functional groups, which include carboxyl, carbonyl, phenol, quinone, lactone, and other groups, bound to the edges of the graphite-like layers. Therefore, they are regarded as good adsorbents, both in liquid and gas phases. The most widely-used carbonaceous materials for the industrial production of activated carbons are coal, wood, and coconut shell. These types of precursors are quite expensive and often imported, in many places; hence making it necessary, particularly for developing countries, to find a cheap and available feedstock for the preparation of activated carbon for use in industry, drinking water purification and wastewater treatment. In order to reduce the synthesis cost of activated carbons, some green final products are recently proposed, using several suitable agricultural by-products (lignocellulosics)—i.e., including olive-waste cakes, cattle-manure compost, bamboo materials, apple pulp, potato peel—as activated carbon precursors. In this Special Issue, special attention is given to those activated carbons (synthesis, and adsorption applications) which can be characterized as “green” because their origin and green environmental-friendly sources. For example, agricultural wastes can be used as origin for the preparation of carbons etc. Furthermore, the application of activated carbons cannot be only adsorption in liquid- or gas-phase (metals, dyes, CO2, NOx, etc.), and also other proposed applications.

Dr. George Z. Kyzas
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Activated carbons
  • Agricultural wastes
  • Adsorption
  • Synthesis
  • Various applications.

Published Papers (1 paper)

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Research

Open AccessArticle Nitrogen-Doped Carbon Nanoparticles for Oxygen Reduction Prepared via a Crushing Method Involving a High Shear Mixer
Materials 2017, 10(9), 1030; doi:10.3390/ma10091030
Received: 3 August 2017 / Revised: 24 August 2017 / Accepted: 28 August 2017 / Published: 4 September 2017
Cited by 1 | PDF Full-text (2344 KB) | HTML Full-text | XML Full-text
Abstract
The disposal of agricultural wastes such as fresh banana peels (BPs) is an environmental issue. In this work, fresh BPs were successfully transformed into nitrogen-doped carbon nanoparticles (N-CNPs) by using a high shear mixer facilitated crushing method (HSM-FCM) followed by carbonization under Ar
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The disposal of agricultural wastes such as fresh banana peels (BPs) is an environmental issue. In this work, fresh BPs were successfully transformed into nitrogen-doped carbon nanoparticles (N-CNPs) by using a high shear mixer facilitated crushing method (HSM-FCM) followed by carbonization under Ar atmosphere. Ammonia-activated N-CNPs (N-CNPs-NH3) were prepared via subsequent ammonia activation treatments at a high temperature. The as-prepared N-CNPs and N-CNPs-NH3 materials both exhibited high surface areas (above 700 m2/g) and mean particle size of 50 nm. N-CNPs-NH3 showed a relatively higher content of pyridinic and graphitic N compared to N-CNPs. In alkaline media, N-CNPs-NH3 showed superior performances as an oxygen reduction reaction (ORR) catalyst (E0 = −0.033 V, J = 2.4 mA/cm2) compared to N-CNPs (E0 = 0.07 V, J = 1.8 mA/cm2). In addition, N-CNPs-NH3 showed greater oxygen reduction stability and superior methanol crossover avoidance than a conventional Pt/C catalyst. This study provides a novel, simple, and scalable approach to valorize biomass wastes by synthesizing highly efficient electrochemical ORR catalysts. Full article
(This article belongs to the Special Issue Green Activated Carbons)
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