From Nanocatalysts to Single-Atom Catalysts

A special issue of Inorganics (ISSN 2304-6740).

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 2523

Special Issue Editors


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Faculty of Chemical Engineering, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming University of Science and Technology, Kunming 650500, China
Interests: carbon-based materials; single-atom catalyst; fuel cell; zinc-air battery

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Department of Nanoengineering, Jacobs School of Engineering, University of California San Diego, San Deigo, CA 92093, USA
Interests: nanomaterials; sensors and biosensors; single-atom catalysts; nanozymes; electrocatalysis; electrochemistry; wearable electronics
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School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
Interests: nanomaterials for enzyme-like biocatalysis and biosensing
Special Issues, Collections and Topics in MDPI journals
CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: nanocatalysts; analytical chemistry; biosensor; nanozymes

Special Issue Information

Dear Colleagues,

Nanocatalysts are a series of catalysts at the nanoscale level and show very excellent catalytic activity in various applications, especially in bio- or energy applications. With the rapid development of nanotechnology in past decades, different nanocatalysts with various nanostructures (nanocube, nanosphere, nanotube, nanowire, nanoflower, etc ) are designed and show huge potential in energy conversion (oxygen/hydrogen reduction and evaluation, CO2 reduction, urea oxidation, etc ), energy storage (batteries, supercapacitors, etc), and biomedical applications (biosensor, nanomedicine, antibacterial, etc). To continuously enhance the catalytic properties, lots of effort contribute to downsizing nano-level catalysts into the single-atom catalyst. The single-atom catalyst, aka single-atomic sites catalysts, owns numerous active sites that existed as isolated single-atom sites, which exhibit the theoretical one hundred percent utilization of active metal atoms, homogeneity of active sites, and particular geometric structure. Such advanced catalysts already show wide applications in energy conversion like fuel cells and water splitting. Also, some special single-atom catalysts with enzyme-like activities are also named single-atom nanozymes for biosensing and biomedical applications. Their superior catalytical properties and unique electronic/geometric structures endow them with continuous boost catalytic activity and stability, enhance the sensitivity in bio/electrochemical sensors, as well as improve the treatment efficiency of catalytical-based nanomedicine. 

This Special Issue aims to cover the recent advances in nanocatalysts or single-atom catalysts, including but not limited to topics of electrocatalysts, photocatalysts, nanozymes, and various energy and biomedical applications.

Prof. Dr. Jincheng Li
Dr. Shichao Ding
Dr. Zhaoyuan Lyu
Dr. Xin Li
Guest Editors

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Keywords

  • nanocatalysts
  • single-atom catalysts
  • active sites control and design
  • energy storage and conversion
  • biosensingng and medical applications

Published Papers (1 paper)

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Research

12 pages, 3327 KiB  
Article
Metal–Organic Framework-Derived Mn/Ni Dual-Metal Single-Atom Catalyst for Efficient Oxygen Reduction Reaction
by Zewen Sun, Siyuan Zhang, Bo Zheng, Yue Zhou, Wenshu Chen, Rui Liu, Guangxiang Liu and Leiming Lang
Inorganics 2023, 11(3), 101; https://doi.org/10.3390/inorganics11030101 - 28 Feb 2023
Cited by 1 | Viewed by 1642
Abstract
Non-precious-metal-based oxygen reduction reaction (ORR) catalysts hold great prospects for rechargeable metal–air batteries and reversible electrolyzer/fuel cell systems. Among the various earth-abundant and noble-metal-free catalysts, Mn- and Ni-based single-atom catalysts (SACs) are attracting attention for ORRs. Herein, we designed a facile and efficient [...] Read more.
Non-precious-metal-based oxygen reduction reaction (ORR) catalysts hold great prospects for rechargeable metal–air batteries and reversible electrolyzer/fuel cell systems. Among the various earth-abundant and noble-metal-free catalysts, Mn- and Ni-based single-atom catalysts (SACs) are attracting attention for ORRs. Herein, we designed a facile and efficient strategy to obtain Mn/Ni dual-metal single-atom catalysts, in which atomic Mn and Ni sites were dispersed on nitrogen-doped porous carbon. The optimized Mn/Ni catalysts showed excellent ORR electrocatalytic performance with a half-wave potential of 0.803 V, comparable to that of commercial Pt/C catalysts. Meanwhile, the electron transfer number was determined to be 3.9, indicating a good four-electron reaction process. The excellent electrocatalytic performance was attributed to the N-doped porous carbon structure with a large specific surface area, which afforded abundant active sites to anchor the single Mn and Ni atoms. Full article
(This article belongs to the Special Issue From Nanocatalysts to Single-Atom Catalysts)
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