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Noble Metal-Based Nanomaterials for Heterogeneous Catalysis
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Noble Metal-Based Nanomaterials for Heterogeneous Catalysis

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

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 16461

Special Issue Editors

Dr. Menggang Li

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Peking University, Beijing 100871, China
Interests: electrocatalysis; oxygen reduction reactions; hydrogen evolution reactions; oxygen evolution reactions; alcohol oxidation reactions; Zn-air batteries
Dr. Shuo Geng

E-Mail Website
Guest Editor
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
Interests: electrocatalysis; thermalcatalysis; hydrogenation reactions; HCOOH dehydration; overall water splitting; CO oxidation reactions
Special Issues, Collections and Topics in MDPI journals
Dr. Manyi Gao

E-Mail Website
Guest Editor
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Interests: photocaytalysis; CO2 reduction reaction; photocatalytic water splitting; selective organic synthesis

Special Issue Information

Dear Colleagues,

In order to boost the efficiency of a desired reaction, catalysts are necessary for over 80% of industrial processes. Different from homogeneous catalysts, heterogeneous catalysts are usually in the form of either metals or ionic compounds, are stable even under relatively harsh reaction conditions and readily separate from reactants and products. Noble metals have received widespread attention in the field of heterogeneous catalysis due to their unique intrinsic properties and irreplaceable catalytic activities. However, the scarcity and high cost limit their large-scale application; thus, maximizing the utilization efficiency of noble metals is of significance for the pursuit of sustainable energy. Nanostructures offer the possibility to reduce costs and maximize atom utilization, becoming an ideal catalyst platform for heterogeneous catalysis. In particular, rational structural design and regulation are very important for optimizing the catalytic performance of noble metals. Therefore, the main goal of this Special Issue is to present progress in the advancement of noble metal-based nanomaterials for heterogeneous catalysis.

Submissions to this Special Issue, entitled “Noble Metal-Based Nanomaterials for Heterogeneous Catalysis,” are welcome in the form of original research papers or short reviews reflecting upon the knowledge in the field of noble metal-based catalysts and their applications in heterogeneous catalysis, including electrocatalysis, photocatalysis, thermal catalysis, etc. We cordially invite you to submit your contributions to this Special Issue, whose topics include, but are not limited to, the following:

  • Electrocatalysis, including fuel cells, water electrolyzers, small molecule electrooxidation, CO2 reduction reaction, etc.;
  • Photocatalysis, including photocatalytic water splitting, degradation and mineralization of organic pollutants, CO2 reduction into hydrocarbon fuels, selective organic synthesis, etc.;
  • Thermal catalysis, including CO2 hydrogenation, CO hydrogenation, methanethiol from H2S-rich syngas and CH3OH–H2S routes, HCOOH dehydration, etc.;
  • Others topics related to heterogeneous catalysis.

Dr. Menggang Li
Dr. Shuo Geng
Dr. Manyi Gao
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. 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 2200 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

  • noble metals
  • nanomaterials
  • heterogeneous catalysis
  • electrocatalysis
  • photocatalysis
  • thermal catalysis

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Published Papers (6 papers)

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Editorial

Jump to: Research, Review

3 pages, 150 KiB  
Editorial
Editorial: Noble Metal-Based Nanomaterials for Heterogeneous Catalysis
by Menggang Li, Shuo Geng and Manyi Gao
Catalysts 2024, 14(12), 848; https://doi.org/10.3390/catal14120848 - 23 Nov 2024
Viewed by 765
Abstract
As is well known, precious metal catalysts can be widely used in fields such as environmental protection, energy conversion, food processing, petrochemicals, and fine chemicals due to their unique intrinsic properties and irreplaceable catalytic activities [...] Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)

Research

Jump to: Editorial, Review

13 pages, 3506 KiB  
Article
Development of Non-Spherical Platinum Nanoparticles on Carbon Supports for Oxygen Reduction Reaction
by Mark Lim, Mohmmad Khalid, Samaneh Shahgaldi and Xianguo Li
Catalysts 2023, 13(10), 1322; https://doi.org/10.3390/catal13101322 - 25 Sep 2023
Cited by 3 | Viewed by 1818
Abstract
Proton exchange membrane fuel cells are anticipated to play an important role in decarbonizing the global energy system, but the performance of platinum (Pt) catalysts must be improved to make this technology more economical. Studies have identified non-spherical Pt nanoparticles on carbon supports [...] Read more.
Proton exchange membrane fuel cells are anticipated to play an important role in decarbonizing the global energy system, but the performance of platinum (Pt) catalysts must be improved to make this technology more economical. Studies have identified non-spherical Pt nanoparticles on carbon supports as promising approaches to address this challenge. However, to realize the full benefits of these strategies, the catalyst synthesis procedures must be successfully simplified and scaled up, and the catalyst must perform well in half and full-cell tests. In this study, a surfactant-free one-pot method is developed to synthesize non-spherical Pt nanoparticles on Ketjen Black carbon, which is either non-treated (Pt/KB), acid-treated (Pt/KB-O), or nitrogen-doped (Pt/KB-N). The catalysts are synthesized in both small and large batches to determine the effect of scaling up the synthesis procedure. The nitrogen-doped carbon support shows a nearly identical morphological structure with uniform distribution of non-spherical Pt nanoparticles for both small and large batches’ synthesis compared with non-treated and acid-treated carbon samples. The comparative oxygen reduction reaction (ORR) activity shows that the Pt/KB-N prepared in small and large batches has better ORR activity, which is likely caused by uniformly distributed non-spherical Pt nanoparticles on the nitrogen-doped carbon support. All three catalysts show similar ORR durability, testing from 0.5–1.0 V, while Pt/KB-O displays slightly better durability from 1.0–1.5 V for carbon corrosion. These results will help inform the implementation of shape-controlled Pt catalysts on modified carbon supports in large scale. Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)
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Review

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23 pages, 11426 KiB  
Review
Platinum Alloys for Methanol Oxidation Electrocatalysis: Reaction Mechanism and Rational Design of Catalysts with Exceptional Activity and Stability
by Renqin Yu, Yifan Zhang, Sixu Deng, Rongying Zhu, Shiming Zhang, Jiujun Zhang, Yufeng Zhao and Zhonghong Xia
Catalysts 2024, 14(1), 60; https://doi.org/10.3390/catal14010060 - 12 Jan 2024
Cited by 10 | Viewed by 2811
Abstract
Direct methanol fuel cells have emerged as highly promising energy conversion devices in the past few decades. However, some challenges, such as carbon monoxide (CO) poisoning and unsatisfactory long-term stability, remain for platinum (Pt) as a methanol oxidation reaction (MOR) catalyst. This review [...] Read more.
Direct methanol fuel cells have emerged as highly promising energy conversion devices in the past few decades. However, some challenges, such as carbon monoxide (CO) poisoning and unsatisfactory long-term stability, remain for platinum (Pt) as a methanol oxidation reaction (MOR) catalyst. This review covers recent advances in Pt alloy MOR catalysts and provides some insights. This review presents MOR catalytic mechanisms based on CO or non-CO pathways. Typical dimension-based designs of MOR catalysts, such as anisotropic nanowires, metallene, nanoframes, and corresponding rationales for performance enhancements, are introduced. More importantly, some key tuning strategies are elaborated, including intermetallic compound synthesis, interface engineering, and surface facet engineering. High-entropy alloys as an intriguing class of MOR catalysts with favorable prospects are also discussed. Finally, future directions and opportunities are outlined. Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)
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34 pages, 12422 KiB  
Review
Ultradurable Pt-Based Catalysts for Oxygen Reduction Electrocatalysis
by Ziting Li, Peng Zhou, Yuxin Zhao, Wenyue Jiang, Bingxin Zhao, Xiaoshuang Chen and Menggang Li
Catalysts 2024, 14(1), 57; https://doi.org/10.3390/catal14010057 - 12 Jan 2024
Cited by 11 | Viewed by 3857
Abstract
An oxygen reduction reaction (ORR) is the key half reaction of proton exchange membrane fuel cells (PEMFCs), and is highly dependent on Pt-based nanocrystals as core electrocatalysts. Despite the exceptional ORR activity from adjusting the electronic structures of surface or near-surface atoms, several [...] Read more.
An oxygen reduction reaction (ORR) is the key half reaction of proton exchange membrane fuel cells (PEMFCs), and is highly dependent on Pt-based nanocrystals as core electrocatalysts. Despite the exceptional ORR activity from adjusting the electronic structures of surface or near-surface atoms, several serious issues, including the corrosion of carbon supports, the preferential leaching of active metal elements, the instability of surface low-coordinated atoms and the sintering/agglomeration of nanocrystals, still exist, challenging the ORR durability of developed Pt-based ORR catalysts. From the point of view of the catalyst structure design, in this review, we summarized the state-of-the-art structural regulation strategies for improving the ORR durability of Pt-based catalysts. The current limitation of Pt-based binary catalysts for ORR electrocatalysis is firstly discussed, and the detailed strategies are further classified into the optimization of supports, metal-doped alloys, core/shell structures, intermetallics and high-entropy alloys, etc. The structure–performance relationship is detailedly explained, especially emphasizing the elimination of the above restrictions. Finally, the existing challenges and future research direction are further presented, aiming at practicing the PEMFC devices of the ultradurable Pt-based catalysts. Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)
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21 pages, 3708 KiB  
Review
Dimension Engineering in Noble-Metal-Based Nanocatalysts
by Bei Liu, Haosen Yang, Pengfei Hu, Guang-Sheng Wang, Yongqiang Guo and Hewei Zhao
Catalysts 2024, 14(1), 9; https://doi.org/10.3390/catal14010009 - 20 Dec 2023
Cited by 6 | Viewed by 2452
Abstract
Catalysts play a pivotal role in modern industries, such as energy, pharmaceuticals, and petrochemicals, serving as cornerstone of high-tech production. Noble metals, such as gold, silver, and platinum group elements, possess the superb catalytic characteristics of high-temperature oxidation resistance, corrosion resistance, stable electrochemical [...] Read more.
Catalysts play a pivotal role in modern industries, such as energy, pharmaceuticals, and petrochemicals, serving as cornerstone of high-tech production. Noble metals, such as gold, silver, and platinum group elements, possess the superb catalytic characteristics of high-temperature oxidation resistance, corrosion resistance, stable electrochemical performance, high catalytic activity, and so on. These characteristics offer excellent prospects for applications in catalysis. In this review, we summarize innovative approaches to regulating the size and morphology of nano-noble metal catalysts with different dimensions. We also showcase typical prominent examples of their applications in exhaust gas purification, battery manufacturing, water splitting, and selective hydrogenation. Finally, perspectives are discussed in terms of future research opportunities in the realm of noble metal nanocatalysts. Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)
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16 pages, 3213 KiB  
Review
Recent Progress on Ruthenium-Based Electrocatalysts towards the Hydrogen Evolution Reaction
by Lulu Li, Fenyang Tian, Longyu Qiu, Fengyu Wu, Weiwei Yang and Yongsheng Yu
Catalysts 2023, 13(12), 1497; https://doi.org/10.3390/catal13121497 - 7 Dec 2023
Cited by 69 | Viewed by 3977
Abstract
Hydrogen has emerged as an important candidate for clean energy, owing to its environmentally friendly advantages. Electrolytic hydrogen production stands out as the most promising technology for hydrogen production. Therefore, the design of highly efficient electrocatalysts is significant to drive the application of [...] Read more.
Hydrogen has emerged as an important candidate for clean energy, owing to its environmentally friendly advantages. Electrolytic hydrogen production stands out as the most promising technology for hydrogen production. Therefore, the design of highly efficient electrocatalysts is significant to drive the application of hydrogen technologies. Platinum (Pt)-based catalysts are famous for their outstanding performance in the hydrogen evolution reaction (HER). However, the expensive cost limits its wide application. Ruthenium (Ru)-based catalysts have received extensive attention due to their relatively lower cost and HER performance similar to that of Pt. Nevertheless, the performance of Ru-based catalysts is still unable to meet industrial demands. Therefore, improving HER performance through the modification of Ru-based catalysts remains significant. In this review, the reaction mechanism of HER is analyzed and the latest research progress in the modification of Ru-based electrocatalysts is summarized. From the reaction mechanism perspective, addressing the adsorption of intermediates on the Ru-based electrocatalyst surface, the adsorption–activation of interface water molecules, and the behavior of interface water molecules and proposing solutions to enhance performance of Ru-based electrocatalyst are the main findings, ultimately contributing to promoting their application in the field of electrocatalysis. Full article
(This article belongs to the Special Issue Noble Metal-Based Nanomaterials for Heterogeneous Catalysis)
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