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6.1
4.1
Journals
Clean Technol.
Special Issues
Green Solvents and Materials for CO2 Capture
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Green Solvents and Materials for CO2 Capture

A special issue of Clean Technologies (ISSN 2571-8797).

Deadline for manuscript submissions: 31 October 2025 | Viewed by 1786

Special Issue Editors

Dr. Giuseppina Vanga

E-Mail Website
Guest Editor
ENEA—Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Via Anguillarese 301, 00123 Rome, Italy
Interests: green chemistry; carbon dioxide; CO2 capture; materials chemistry; catalyst; chemical engineering; energy conversion; e-fuels; biofuels
Dr. Claudia Bassano

E-Mail Website
Guest Editor
ENEA, Italian Agency for New Technologies, Energy and Sustainable Economic Development, Via Anguillarese 301, 00123 Rome, Italy
Interests: carbon dioxide; biomass; Fischer–Tropsch process; catalyst; carbon capture; Fischer–Tropsch synthesis; energy engineering; renewable energy technologies; energy conversion; biomass conversion; e-fuels; biofuel production

Special Issue Information

Dear Colleagues,

We are pleased to announce the call for papers for this Special Issue, which aims at collecting works showing strategies of scientists working on green solvents and materials for CO2 capture. We welcome original research articles, review articles and case studies exploring novel strategies. The use of fossil fuels as the main primary energy source inevitably leads to an increasing amount of carbon dioxide released into the atmosphere. The increasing concentration of CO2 in the atmosphere is indicated as the main cause of the greenhouse effect on the planet, resulting in climate change. These reasons have motivated the growing efforts in recent years, both by the technical-scientific and policy communities, to control the accumulation of atmospheric CO2, and considerable progress has already been made in CO2 capture, storage and utilization, as evidenced by the new materials proposed since the beginning of the millennium in the literature. In general, the synthesis of most CO2 sorbents may require multiple steps for their preparation or activation, which goes against the principles of green chemistry (GCP). A global effort is therefore needed to develop new green solvents and materials for CO2 capture, while improving their capture efficiency in a sustainable way using different approaches and technologies. To address these challenges, it becomes essential to think about green frameworks to design chemical products and processes.

Dr. Giuseppina Vanga
Dr. Claudia Bassano
Guest Editors

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 submissions that pass pre-check are 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. Clean Technologies is an international peer-reviewed open access quarterly 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 1600 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

  • green chemistry
  • CO2 capture
  • deep eutectic solvent
  • ionic liquid
  • amines
  • solubility of CO2
  • adsorption of CO2
  • choline chloride

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Published Papers (2 papers)

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Research

21 pages, 2981 KiB  
Article
Nitrogen-Doped Porous Waste Biomass as a Sustainable Adsorbent for CO2 Capture: The Influence of Preparation Conditions
by Christiano B. Peres, Leandro C. Morais and Pedro R. Resende
Clean Technol. 2025, 7(1), 25; https://doi.org/10.3390/cleantechnol7010025 - 12 Mar 2025
Viewed by 515
Abstract
In the context of global warming, technologies and studies aimed at mitigating carbon dioxide (CO2) have become increasingly relevant. One such technology is CO2 capture by activated and functionalized N-doped carbon from biomasses. This paper explores the ways to find [...] Read more.
In the context of global warming, technologies and studies aimed at mitigating carbon dioxide (CO2) have become increasingly relevant. One such technology is CO2 capture by activated and functionalized N-doped carbon from biomasses. This paper explores the ways to find the optimal CO2 adsorption conditions, based on the carbonization temperature, impregnation rate, and preparation method, considering four different preparation routes in activated and functionalized carbon-N (PCs) of banana peel biomass residues. PCs were produced and chemically activated by K2C2O4 and H2O and functionalized by ethylenediamine (EDA). Carbon dioxide capture was investigated using functional density theory (DFT). Nitrogen (N) doping was confirmed by X-ray photoelectron spectroscopy (XPS), while the thermal characteristics were examined by thermogravimetric analysis (TGA). Surface morphology was examined by scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) detection, and surface functional groups were characterized using Fourier-transform infrared (FTIR) spectroscopy. In addition, the inorganic components were characterized by X-ray diffraction (XRD). The best performance of CO2 adsorption of 1.69 mmol/g was achieved at 0 °C and 1 bar over the adsorbent synthesized at 600 °C with 60 min residence time, a 1:1 degree of impregnation, and a dry preparation method (single-stage preparation). This work presents as a great innovation the use of biomass as a raw material in the adsorption of the main greenhouse gases, using easy and accessible products. Full article
(This article belongs to the Special Issue Green Solvents and Materials for CO2 Capture)
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15 pages, 2301 KiB  
Article
Measurement and Correlation of Vapor–Liquid Equilibrium of Mixtures of 1,2-Propanediol or 1,4-Butanediol + 1,8-Diazabicyclo(5.4.0)undec-7-ene at 30 kPa
by Camilla Barbieri, Valentina Schiattarella, Stefania Moioli, Laura A. Pellegrini, Giacomo Filippini, Alberto R. de Angelis and Gianluca Fiori
Clean Technol. 2025, 7(1), 3; https://doi.org/10.3390/cleantechnol7010003 - 30 Dec 2024
Viewed by 773
Abstract
In this study, vapor–liquid equilibrium (VLE) experimental data were measured for two binary solvents based on 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU), which can be used as a new CO2-binding organic liquids (CO2-BOLs) solvent. No experimental data are available in the literature and [...] Read more.
In this study, vapor–liquid equilibrium (VLE) experimental data were measured for two binary solvents based on 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU), which can be used as a new CO2-binding organic liquids (CO2-BOLs) solvent. No experimental data are available in the literature and are fundamental to determine whether the considered mixtures are suitable to be possible alternatives to traditional amine solutions for CO2 removal. The bubble point data of 1,2-propanediol+1,8-diazabicyclo(5.4.0)undec-7-ene (DBU) and 1,4-butanediol+DBU mixtures were measured at 30 kPa. The experimental determination was carried out in an all-glass dynamic recirculation still at the Process Thermodynamics laboratory (PT lab) of Politecnico di Milano. The thermodynamic modeling of the VLE behavior of two DBU-based mixtures was performed considering the NRTL, the UNIQUAC, and the Wilson models, and binary interaction parameters of the NRTL activity coefficients model were regressed on the basis of the measured experimental data. Full article
(This article belongs to the Special Issue Green Solvents and Materials for CO2 Capture)
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