Special Issue "Metal–Semiconductor Core–Shell Nanocatalysts: Application and Recycling"

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

Deadline for manuscript submissions: 31 December 2019.

Special Issue Editor

Guest Editor
Dr. Kunal Mondal Website E-Mail
Materials Science and Engineering Department, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
Interests: catalysis; biosensing; environmental remediation; soft materials; advanced manufacturing; carbon-based functional materials; colloids and interfaces; flexible electronics; liquid metal conductor; human–robot interaction; soft robotics

Special Issue Information

Dear Colleagues,

The application of metal–semiconductor core–shell nanocatalysts in photocatalytic oxidation of pollutants is receiving a great deal of attention. These catalysts harvest more photon from energy sources and thus enhance photocatalystic efficiency. They generate an ample amount of hydroxyl radicals, which are very powerful oxidative agents and can oxidize the entire organic pollutant present in the aqueous medium. Core–shell catalysts can be modified by either adding metal nanocenters inside the semiconductor shells or fabricating nanoscopic semiconducting shells around the metal core in a metal–semiconductor core–shell system. These core–shell catalysts can further improve photocatalysis, since this particular combination promotes more photon harvesting by refining the charge carrier separation at the metal–metal oxide semiconductor interfaces and improving the light absorption properties, thereby increasing hydroxyl radical generation into the reaction medium.

The main focus of this Special Issue is to promote most recent works in the field of metal–semiconductor core–shell nanoparticle catalysts, mediated photocatalysis of organic pollutants and harmful microorganisms, and their recycling process and possibility of reuse. The issue will attract the interests of diverse communities of chemists, physicists, materials scientists, biologists, and engineers.

Potential topics include but are not limited to the following:

  • Synthesis and application of metal–semiconductor core–shell catalysts;
  • Core–shell nanostructures for biocatalysts and sensing;
  • Core–shell nanostructures for the generation of H2 and hydrogenation;
  • Carbon–semiconductor core–shell nanocomposites for catalysis, photocatalysis, and sensing;
  • Core–shell nanostructures and composites for optical, electrical, and thermal conductivity, strength, stiffness, and toughness.

Dr. Kunal Mondal
Guest Editor

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 papers will be 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 1600 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

  • core–shell nanoparticles
  • core–shell photocatalyst
  • metal core–semiconductor shell
  • photocatalytic ozonation
  • wastewater purification
  • catalytic reactor
  • advanced oxidation process
  • biocatalysis
  • hydrogenation
  • electrocatalaylsis
  • water disinfection
  • photocatalyst recycling

Published Papers (1 paper)

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Research

Open AccessArticle
Electromagnetic Effective Medium Modelling of Composites with Metal-Semiconductor Core-Shell Type Inclusions
Catalysts 2019, 9(7), 626; https://doi.org/10.3390/catal9070626 - 22 Jul 2019
Abstract
The possibility of using light to drive chemical reactions has highlighted the role of photocatalysis as a key tool to address the environmental and energy issues faced by today’s society. Plasmonic photocatalysis, proposed to circumvent some of the problems of conventional semiconductor catalysis, [...] Read more.
The possibility of using light to drive chemical reactions has highlighted the role of photocatalysis as a key tool to address the environmental and energy issues faced by today’s society. Plasmonic photocatalysis, proposed to circumvent some of the problems of conventional semiconductor catalysis, uses hetero-nanostructures composed by plasmonic metals and semiconductors as catalysts. Metal-semiconductor core-shell nanoparticles present advantages (i.e., protecting the metal and enlarging the active sites) with respect to other hetero-nanostructures proposed for plasmonic photocatalysis applications. In order to maximize light absorption in the catalyst, it is critical to accurately model the reflectance/absorptance/transmittance of composites and colloids with metal-semiconductor core-shell nanoparticle inclusions. Here, we present a new method for calculating the effective dielectric function of metal-semiconductor core-shell nanoparticles and its comparison with existing theories showing clear advantages. Particularly, this new method has shown the best performance in the prediction of the spectral position of the localized plasmonic resonances, a key parameter in the design of efficient photocatalysts. This new approach can be considered as a useful tool for designing coated particles with desired plasmonic properties and engineering the effective permittivity of composites with core-shell type inclusions which are used in photocatalysis and solar energy harvesting applications. Full article
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