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Single-Atom Catalysts for Environmental Remediation and Resource Recovery: From Preparation...
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Single-Atom Catalysts for Environmental Remediation and Resource Recovery: From Preparation to Applications

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

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 9133

Special Issue Editors

Dr. Xuanhao Wu

E-Mail Website
Guest Editor
Institute of Environmental Technology, College of Environment and Resources, Zhejiang University, Hangzhou 310058, China
Interests: environmental engineering; environmental nanotechnology; environmnetal catalysis; pollutant control & resource recovery
Prof. Dr. Haiqiang Wang

E-Mail Website
Guest Editor
Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
Interests: environmental catalyis; photocatalysis; NOx reduction; NH3-SCR; VOCs treatment; plasma catalysis; indoor air purification
Prof. Dr. Liang Zhu

E-Mail Website
Guest Editor
Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
Interests: biological wastewater treatment and recycling; natural waters ecological restoration and intelligent control; environmental biotechnology

Special Issue Information

Dear Colleauges,

In the last decade, single-atom catalysts (SACs) have received vast attention in the areas of energy, chemical, and environmental engineering. Two properties of SACs are critical: high atomic efficiency and high atom-substrate binding stability. The former ensures low cost, especially for precious noble metals. The latter, which is often achieved via oxygen vacancy, dopant coordinations, and spatial confinement, is important for long-term and large-scale applications. For environmental remediation, SACs have been applied for (1) gas phase: VOC treatment, NOx reduction, CO2 reduction, and CO oxidation; (2) aqueous phase: Fenton-like advanced oxidation process (AOP), dehalogenation, and nitrate reduction. The application of SACs for environmental engineering is still at an early stage, with challenges remaining in terms of improving pollutant conversion efficiency, understanding the fundamental SAC catalysis mechanisms, and constructing physicochemically stable SACs in various environmental media. This Special Issue aims to include original research or review articles related to the application of SACs for environmental remediations and resource recovery, with subjects covering novel material designs, theoretical calculations, and engineered applications.

Dr. Xuanhao Wu
Prof. Dr. Haiqiang Wang
Prof. Dr. Liang Zhu
Guest Editors

Manuscript Submission Information

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Keywords

  • single atom catalyst
  • VOC treatment
  • NOx reduction
  • CO2 reduction
  • CO oxidation
  • advanced oxidation process
  • dehalogenation
  • nitrate reduction

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Published Papers (2 papers)

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12 pages, 2105 KiB  
Article
Single-Atom Platinum Catalyst for Efficient CO2 Conversion via Reverse Water Gas Shift Reaction
by Yulian He and Dahong Huang
Molecules 2023, 28(18), 6630; https://doi.org/10.3390/molecules28186630 - 14 Sep 2023
Cited by 17 | Viewed by 3775
Abstract
The need to tackle CO2 emissions arising from the continuously rising combustion of fossil fuels has sparked considerable interest in investigating the reverse water gas shift (RWGS) reaction. This reaction holds great promise as an alternative technique for the conversion and utilization [...] Read more.
The need to tackle CO2 emissions arising from the continuously rising combustion of fossil fuels has sparked considerable interest in investigating the reverse water gas shift (RWGS) reaction. This reaction holds great promise as an alternative technique for the conversion and utilization of CO2. In this study, a scalable method was employed to synthesize a single-atom Pt catalyst, uniformly dispersed on SiC, where up to 6.4 wt% Pt1 was loaded onto a support based on ligand modification and UV photoreduction. This Pt1/SiC catalyst exhibited a high selectivity (100%) towards the RWGS reaction; 54% CO2 conversion was observed at 900 °C with a H2/CO2 feed-in ratio of 1:1, significantly higher than the conventional Pt nanoparticle counterparts. Moreover, Pt1/SiC displayed a robust stability during the long-term test. The activation energy with as-synthesized Pt1/SiC was further calculated to be 61.6 ± 6.4 kJ/mol, which is much lower than the 91.6 ± 15.9 kJ/mol of the Pt nanoparticle counterpart and other Pt-based catalysts reported so far. This work offers new insights into the utilization of diverse single-atom catalysts for the RWGS reaction and other crucial catalytic processes, paving the way for the further exploration and application of SACs in various industrial endeavors. Full article
(This article belongs to the Special Issue Single-Atom Catalysts for Environmental Remediation and Resource Recovery: From Preparation to Applications)
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Review

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23 pages, 6053 KiB  
Review
Single-Atom Catalysts in Environmental Engineering: Progress, Outlook and Challenges
by Zhe Li, Rongrong Hong, Zhuoyi Zhang, Haiqiang Wang, Xuanhao Wu and Zhongbiao Wu
Molecules 2023, 28(9), 3865; https://doi.org/10.3390/molecules28093865 - 4 May 2023
Cited by 10 | Viewed by 4445
Abstract
Recently, single-atom catalysts (SACs) have attracted wide attention in the field of environmental engineering. Compared with their nanoparticle counterparts, SACs possess high atomic efficiency, unique catalytic activity, and selectivity. This review summarizes recent studies on the environmental remediation applications of SACs in (1) [...] Read more.
Recently, single-atom catalysts (SACs) have attracted wide attention in the field of environmental engineering. Compared with their nanoparticle counterparts, SACs possess high atomic efficiency, unique catalytic activity, and selectivity. This review summarizes recent studies on the environmental remediation applications of SACs in (1) gaseous: volatile organic compounds (VOCs) treatment, NOx reduction, CO2 reduction, and CO oxidation; (2) aqueous: Fenton-like advanced oxidation processes (AOPs), hydrodehalogenation, and nitrate/nitrite reduction. We present the treatment activities and reaction mechanisms of various SACs and propose challenges and future opportunities. We believe that this review will provide constructive inspiration and direction for future SAC research in environmental engineering. Full article
(This article belongs to the Special Issue Single-Atom Catalysts for Environmental Remediation and Resource Recovery: From Preparation to Applications)
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