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Molecules
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Novel Catalytic Materials and Underlying Reaction Mechanisms for Air Purification...
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Novel Catalytic Materials and Underlying Reaction Mechanisms for Air Purification and CO2 Conversion

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 2743

Special Issue Editors

Dr. Xinbo Zhu

E-Mail Website
Guest Editor
Faculty of Maritime and Transportation, Ningbo University, Ningbo 315832, China
Interests: plasma; catalyst; VOCs; NH3; soot oxidation; reaction mechanisms
Dr. Zijian Zhou

E-Mail Website
Guest Editor
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: flue gas; coal combustion; catalyst; heavy metal; NOx; VOCs
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The extensive combustion of various fossil fuels in power plants, chemical industries and mobile sources has resulted in the emission of major greenhouse gases and air pollutants, including CO, CO2, N2O and volatile organic compounds, leading to global warming and air quality issues. Heterogeneous catalysis has been proven as one of the most effective solutions to these issues, while great efforts have been made in the related fields. In particular, materials with special structures and carefully designed active sites could play a vital role in dealing with these issues. Moreover, the reaction pathways and underlying mechanisms of these novel materials in greenhouse gas and air pollutant control may be quite different from the conventional bulk materials. This Special Issue aims to gather a range of researchers and share their latest progress in air purification and CO2 conversion over novel catalytic materials.

Dr. Xinbo Zhu
Dr. Zijian Zhou
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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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

  • CO2 conversion
  • CO2 utilization
  • CO
  • VOCs
  • NOx

Published Papers (2 papers)

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Research

19 pages, 8999 KiB  
Article
Synergistic Promotion of Photocatalytic Degradation of Methyl Orange by Fluorine- and Silicon-Doped TiO2/AC Composite Material
by Jinyuan Zhu, Yingying Zhu, Yifan Zhou, Chen Wu, Zhen Chen and Geng Chen
Molecules 2023, 28(13), 5170; https://doi.org/10.3390/molecules28135170 - 02 Jul 2023
Cited by 3 | Viewed by 1421
Abstract
The direct or indirect discharge of organic pollutants causes serious environmental problems and endangers human health. The high electron–hole recombination rate greatly limits the catalytic efficiency of traditional TiO2-based catalysts. Therefore, starting from low-cost activated carbon (AC), a photocatalyst (F-Si-TiO2 [...] Read more.
The direct or indirect discharge of organic pollutants causes serious environmental problems and endangers human health. The high electron–hole recombination rate greatly limits the catalytic efficiency of traditional TiO2-based catalysts. Therefore, starting from low-cost activated carbon (AC), a photocatalyst (F-Si-TiO2/AC) comprising fluorine (F)- and silicon (Si)-doped TiO2 loaded on AC has been developed. F-Si-TiO2/AC has a porous structure. TiO2 nanoparticles were uniformly fixed on the surface or pores of AC, producing many catalytic sites. The band gap of F-Si-TiO2/AC is only 2.7 eV. In addition, F-Si-TiO2/AC exhibits an excellent adsorption capacity toward methyl orange (MO) (57%) in the dark after 60 min. Under the optimal preparation conditions, F-Si-TiO2/AC showed a significant photodegradation performance toward MO, reaching 97.7% after irradiation with visible light for 70 min. Even under the action of different anions and cations, its degradation efficiency is the lowest, at 64.0%, which has good prospects for practical application. At the same time, F-Si-TiO2/AC has long-term, stable, practical application potential and can be easily recovered from the solution. Therefore, this work provides new insights for the fabrication of low-cost, porous, activated, carbon-based photocatalysts, which can be used as high-performance photocatalysts for the degradation of organic pollutants. Full article
(This article belongs to the Special Issue Novel Catalytic Materials and Underlying Reaction Mechanisms for Air Purification and CO2 Conversion)
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16 pages, 9395 KiB  
Article
Catalytic-CO2-Desorption Studies of BZA-AEP Mixed Absorbent by the Lewis Acid Catalyst CeO2-γ-Al2O3
by Shenghua Liu, Xudong Mao, Hao Chen, Xinbo Zhu and Guohua Yang
Molecules 2023, 28(11), 4438; https://doi.org/10.3390/molecules28114438 - 30 May 2023
Viewed by 1029
Abstract
Traditional organic amines exhibit inferior desorption performance and high regeneration energy consumption. The implementation of solid acid catalysts presents an efficacious approach to mitigate regeneration energy consumption. Thus, investigating high-performance solid acid catalysts holds paramount importance for the advancement and implementation of carbon [...] Read more.
Traditional organic amines exhibit inferior desorption performance and high regeneration energy consumption. The implementation of solid acid catalysts presents an efficacious approach to mitigate regeneration energy consumption. Thus, investigating high-performance solid acid catalysts holds paramount importance for the advancement and implementation of carbon capture technology. This study synthesized two Lewis acid catalysts via an ultrasonic-assisted precipitation method. A comparative analysis of the catalytic desorption properties was conducted, encompassing these two Lewis acid catalysts and three precursor catalysts. The results demonstrated that the CeO2-γ-Al2O3 catalyst demonstrated superior catalytic desorption performance. Within the desorption temperature range of 90 to 110 °C, the average desorption rate of BZA-AEP catalyzed by the CeO2-γ-Al2O3 catalyst was 87 to 354% greater compared to the desorption rate in the absence of the catalyst, and the desorption temperature can be reduced by approximately 10 °C. A comprehensive analysis of the catalytic desorption mechanism of the CeO2-γ-Al2O3 catalyst was conducted, and indicated that the synergistic effect of CeO2-γ-Al2O3 conferred a potent catalytic influence throughout the entire desorption process, spanning from the rich solution to the lean solution. Full article
(This article belongs to the Special Issue Novel Catalytic Materials and Underlying Reaction Mechanisms for Air Purification and CO2 Conversion)
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