Special Issue "Synthesis, Characterization, or Applications of Novel Catalytic Nanoparticles"

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

Deadline for manuscript submissions: 31 March 2023 | Viewed by 615

Special Issue Editors

Prof. Dr. Yuanhua Sang
E-Mail Website
Guest Editor
Institute of Crystal Materials, Shandong University, Jinan 250100, China
Interests: nanomaterials for energy conversion and application based on the photocatalysis; heterostructures; external field enhanced photocatalysis; magnetic field enhanced photocatalysis
Prof. Dr. Zupeng Chen
E-Mail Website
Guest Editor
College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
Interests: heterogeneous catalysis; nanocatalysis; single-atom catalysis; photo(electron)catalysis; water splitting; CO2 reduction; selective hydrogenation; coupling reactions; biomass conversions

Special Issue Information

Dear Colleagues,

Catalysis is one of the most important topics in material science. It is an outstanding route for the control of chemical reactions through changing the kinetics based on the specific physical–chemical properties of materials, especially for nano-sized materials. Recently, there has been great advancement in this subfield during the progress of nanomaterial science. For instance, photocatalytic water splitting is an encouraging strategy for solar energy conversion. Many factors, including light absorption, charge separation, reaction activity, have been extensively studied. Based on the improvement of catalytic property, the application has been extended to CO2 reduction, N2 reduction, as well as traditional organic synthesis. Similarly, the electrochemical process for the above catalytic process is also attractive. The different initial energy provides a higher energy density for the potential practical application. The various strategies, such as surface facet modification, band structure modification, and external field assistance, have been areas of interest for a while. The recent progress is encouraged to be reported to further improve this subfield. This Special Issue aims to cover the recent progress and trends in the synthesis, characterization, and applications of novel heterogeneous catalysts. 

Prof. Dr. Yuanhua Sang
Prof. Dr. Zupeng Chen
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

  • nanocatalysis
  • heterogeneous catalysis
  • photocatalysis
  • water splitting
  • CO2 reduction
  • N2 reduction
  • organic synthesis
  • charge separation
  • external field enhancement
  • catalytic activity
  • electrochemical reaction

Published Papers (1 paper)

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Research

Article
Ni-H-Beta Catalysts for Ethylene Oligomerization: Impact of Parent Cation on Ni Loading, Speciation, and Siting
Catalysts 2022, 12(8), 824; https://doi.org/10.3390/catal12080824 - 27 Jul 2022
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Abstract
Ni-H-Beta catalysts for ethylene oligomerization (EO) were prepared by ion exchange of NH4-Beta and H-Beta zeolites with aqueous Ni(NO3)2 and characterized by H2-temperature-programmed reduction (TPR), NH3-temperature-programmed desorption (TPD), and diffuse-reflectance infrared Fourier-transform spectroscopy (DRIFTS). [...] Read more.
Ni-H-Beta catalysts for ethylene oligomerization (EO) were prepared by ion exchange of NH4-Beta and H-Beta zeolites with aqueous Ni(NO3)2 and characterized by H2-temperature-programmed reduction (TPR), NH3-temperature-programmed desorption (TPD), and diffuse-reflectance infrared Fourier-transform spectroscopy (DRIFTS). Quadruple exchange of NH4-Beta at 70 °C resulted in 2.5 wt.% Ni loading corresponding to a Ni2+/framework aluminum (FAl) molar ratio of 0.52. [NiOH]+ and H+ are the primary charge-compensating cations in the uncalcined catalyst, as evidenced by TPR and DRIFTS. Subsequent calcination at 550 °C in air yielded a Ni-H-Beta catalyst containing primarily bare Ni2+ ions bonded to framework oxygens. Quadruple exchange of H-Beta at 70 °C gave 2.0 wt.% Ni loading (Ni2+/FAl = 0.41). After calcination at 550 °C, the resulting Ni-H-Beta catalyst comprises a mixture of bare Ni2+ ions: [NiOH]+ and NiO species. The relative abundance of [NiOH]+ increases with the number of exchanges. In situ pretreatment at 500 °C in flowing He converted the [NiOH]+ species to bare Ni2+ ions via dehydration. The bare Ni2+ ions interact strongly with the Beta framework as evidenced by a perturbed antisymmetric T-O-T vibration at 945 cm−1. DRIFT spectra of CO adsorbed at 20 °C indicate that the Ni2+ ions occupy two distinct exchange positions. The results of EO testing at 225 °C and 11 bar (ethylene) suggested that the specific Ni2+ species initially presented (e.g., bare Ni2+, [NiOH]+) did not significantly affect the catalytic performance. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Piezotronic process enhanced photocatalytic process by charge separation improvement
Authors: Xiaowen Su; Xiaolei Zhao; Chao Cui; Ning Xi; Yuanhua Sang
Affiliation: State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

Title: Ultrathin TiO2 nanobelts/Sn3O4 nanosheets heterostructures for boost photocatalytic property
Authors: Xiaoning Wang; Yanming Wang
Affiliation: School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan, 250357, China

Title: Preparation and Electrochemical Properties of MnO2/TiO2/ Porous Titanium Sandwich Structure
Authors: Jing Pan, Qing Li, Xigui Sun, Sujie Chang*
Affiliation: School of Materials Science and Engineering, Shandong Jianzhu University, Fengming Road, Jinan 250101, China
Abstract: Powder metallurgical porous titanium-based nanostructure composites are attractive for high-tech applications of energy conversion and energy storage due to their three-dimensional (3D) micro-nano hierarchical structure. This study presents a novel sandwich nanostructure of MnO2/TiO2/porous Ti that was successfully prepared by a chemical co-precipitation reaction between KMnO4 and MnSO4. The composite structural and morphological analysis of the nano-coatings were carried out by means of X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), respectively. The results indicate that the surface of coatings is uniform and compact, with a high load capacity. The MnO2 nanoparticles are filled onto the TiO2 nanowire formed by the hydrothermal method. The electrochemical properties of the resultant were investigated by testing the charge/discharge curves and cyclic voltammetry of a three-electrode system. It showed that MnO2/TiO2/porous Ti electrode has the best capacitor performance and that nano-MnO2 coatings significantly decrease the corrosion currents densities. It indicates that the nano-MnO2 coatings exhibit excellent anti-corrosion properties at room temperature and better capacitance performance.

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