Two-Dimensional Materials in Photo(electro)catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: 16 December 2024 | Viewed by 1894

Special Issue Editors


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Guest Editor
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, China
Interests: semiconductor photocatalysis; nanomaterials; environmental-catalysis; environmental chemistry

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Guest Editor
College of Resources and Environment, South-Central Minzu University, Wuhan 430074, China
Interests: semiconductor photocatalysis; nanomaterials; TiO2; g-C3N4
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
Interests: photocatalysis; removal of NOx, VOCs; semiconductor

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Guest Editor
Department of Civil and Environmental Engineering, Environmental Materials & Membrane Processing Laboratory, 222 Wangsimni-ro, Seongdong-gu, Hanyang University, Seoul 04763, Republic of Korea
Interests: CO2 reduction; photocatalytic hydrogen evolution; photodegradation of organic pollutant; graphene; carbon nitride

Special Issue Information

Dear Colleagues,

In the background of the carbon-neutral energy cycle, catalysis is one of the greenest approaches to solving the energy problem and achieving carbon neutrality. Two-dimensional materials, such as 2D organic framework systems, 2D polymers, and few-layered materials (graphene, graphene-like systems, transition metal dichalcogenides, carbides, nitrides, carbonitrides, silicene, germanene, stanene, and phosphorene), have been regarded as one of most important catalysts and gained significant attention due to their unique properties and versatile applications. Therefore, the design and manipulation of two-dimensional materials at the atomic and molecular scales is very meaningful for improving catalytic processes and developing more efficient energy conversion systems. This Special Issue covers, but is not limited to, the synthesis and applications of two-dimensional materials. Different ex- and in situ techniques for investigating these two-dimensional materials, such as their surface and interface properties, will be included. Many applications based on two-dimensional materials would be expected such as water splitting, hydrogen evolution, carbon dioxide reduction, degradation of organic pollutants, and organic synthesis reactions.

We are looking forward to receiving various research contributions and results in this Special Issue, and we are grateful for your support and contributions. Your active participation and substantive input will be the basis of a successful outcome. We look forward to your submissions.

Herein, we would like to invite you all to contribute with your valuable research to this Special Issue.

Prof. Daimei Chen
Prof. Dr. Kangle Lv
Dr. Yuhan Li
Dr. Puttaswamy Madhusudan
Guest Editors

Manuscript Submission Information

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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. Catalysts 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 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

  • two-dimensional materials
  • catalysis
  • CO2 utilization
  • pollutant abatement
  • hydrogen production
  • co-catalysts
  • heterojunction
  • solar fuels

Published Papers (2 papers)

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Research

13 pages, 4322 KiB  
Article
Plasmonic Bi-Modified Bi2Sn2O7 Nanosheets for Efficient Photocatalytic NO Removal
by Ning Li, Wenwen Zhao, Jiatong Zhang, Xuhui Liu, Yangqin Gao and Lei Ge
Catalysts 2024, 14(4), 275; https://doi.org/10.3390/catal14040275 - 18 Apr 2024
Viewed by 756
Abstract
The photocatalytic removal of nitric oxide (NO) is a promising technology used to reduce the level of harmful gaseous pollutants in parts per billion (ppb). As a potential photocatalyst, Bi2Sn2O7 has a low quantum efficiency due to its [...] Read more.
The photocatalytic removal of nitric oxide (NO) is a promising technology used to reduce the level of harmful gaseous pollutants in parts per billion (ppb). As a potential photocatalyst, Bi2Sn2O7 has a low quantum efficiency due to its fast recombination rate of photo-generated carriers. In this paper, Bi/Bi2Sn2O7 was prepared by the in situ deposition of Bi. The structural, electrical, and optical properties of the attained sample were investigated through a series of analyses. The results demonstrate that Bi nanoparticles not only enhance the photoabsorption ability of Bi2Sn2O7 due to their surface plasmon resonance (SPR) effect, but also improve its photocatalytic activity. Photocatalytic performance was evaluated by the oxidation of NO at ppb level under xenon lamp (λ > 400 nm) irradiation. It was found that the photocatalytic NO removal rate increased from 7.2% (Bi2Sn2O7) to 38.6% (Bi/Bi2Sn2O7). The loading of Bi promotes the separation and migration of photo-generated carriers and enhances the generation of •O2− and •OH radicals responsible for the oxidation of NO. The Bi/Bi2Sn2O7 composite photocatalyst also exhibits excellent photocatalytic stability, which makes it a potential candidate for use in air purification systems. Full article
(This article belongs to the Special Issue Two-Dimensional Materials in Photo(electro)catalysis)
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19 pages, 2724 KiB  
Article
Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni3Si2O5(OH)4 as a Novel Carrier of CdS for Efficient Photocatalytic H2 Generation
by Jiarong Ma, Run Zhou, Yu Tu, Ruixin Ma, Daimei Chen and Hao Ding
Catalysts 2024, 14(3), 183; https://doi.org/10.3390/catal14030183 - 6 Mar 2024
Viewed by 891
Abstract
Ni3Si2O5(OH)4 rods (NS) were synthesized via a hydrothermal method, employing natural wollastonite as a template. The hierarchical Ni3Si2O5(OH)4 rods exhibited vertically oriented nanosheets, resulting in a substantial increase in [...] Read more.
Ni3Si2O5(OH)4 rods (NS) were synthesized via a hydrothermal method, employing natural wollastonite as a template. The hierarchical Ni3Si2O5(OH)4 rods exhibited vertically oriented nanosheets, resulting in a substantial increase in the specific surface area (from 2.24 m2/g to 178.4 m2/g). Subsequently, a CdS/Ni3Si2O5(OH)4 composite photocatalyst (CdS/NS) was prepared using a chemical deposition method. CdS was uniformly loaded onto the surface of the Ni3Si2O5(OH)4 nanosheets, successfully forming a heterojunction with Ni3Si2O5(OH)4. The CdS/NS photocatalyst in the presence of lactic acid as a sacrificial agent demonstrated an impressive H2 production rate of 4.05 mmol h−1 g−1, around 40 times higher than pure CdS. The photocorrosion of CdS was effectively solved after loading. After four cycles, the performance of CdS/NS remained stable, showing the potential for sustainable applications. After photoexcitation, electrons moved from Ni3Si2O5(OH)4 to the valence band of CdS, where they interacted with the holes via an enhanced interface contact. Simultaneously, electrons in CdS transitioned to its conduction band, facilitating hydrogenation. The enhanced performance was attributed to the improved CdS dispersion by Ni3Si2O5(OH)4 loading and efficient photogenerated carrier separation through the heterojunction formation. This work provides new perspectives for broadening the applications of mineral materials and developing heterojunction photocatalysts with good dispersibility and recyclability. Full article
(This article belongs to the Special Issue Two-Dimensional Materials in Photo(electro)catalysis)
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