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Catalysts
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Laser Spectroscopy: A Powerful Tool for Photocatalysis
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Laser Spectroscopy: A Powerful Tool for Photocatalysis

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

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 3766

Special Issue Editors

Dr. Jiaming Li

E-Mail Website
Guest Editor
1. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
2. State Key Laboratory of Optical Information Physics and Technologies, South China Normal University, Guangzhou 510006, China
Interests: laser spectroscopy; laser-induced fluorescence; photocatalyst prepared by laser; laser–material interaction
Dr. Huiwu Yu

E-Mail Website
Guest Editor
Department of Physics, Northwest University, 1 Xuefu Ave., Guodu, Chang'an District, Xi'an, Shaanxi 710127, China
Interests: laser–material interaction; laser spectroscopy; laser micro–nano fabrication; photocatalysis; electrocatalysis

Special Issue Information

Dear Colleagues, 

Photocatalysts provide convenient and green ways to realize pollutant degradation, energy conversion, anti-bacterial agents, and so on. Photocatalysts have been widely employed in the areas including the environment, energy, desalination plants, medicine, and agriculture. However, there are some important factors hindering the further development of photocatalysts: (a) narrowing bandgaps, (b) increasing production, (c) a better understanding of reaction mechanisms, and (d) larger specific surface ratios. Laser spectroscopy is a powerful tool for material characterization and reaction diagnosis, which are essential for further development of photocatalysts.

This Special Issue includes the following topics: (a) material characterization methods of photocatalysts by laser spectroscopy, and (b) reaction kinetics and reaction mechanisms diagnosed by laser spectroscopy.

Dr. Jiaming Li
Dr. Huiwu Yu
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 2700 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

  • photocatalyst
  • laser spectroscopy
  • laser-induced fluorescence
  • atomic and molecular fluorescence
  • online diagnosis

Published Papers (2 papers)

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Research

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16 pages, 5784 KiB  
Article
Effect of Sr-Doping on the Photocatalytic Performance of LaNiO3−σ
by Yuhao Zhang, Liang Guo, Qunang Xu, Qingmao Zhang, Jiaming Li and Qiongxiong Ma
Catalysts 2022, 12(11), 1434; https://doi.org/10.3390/catal12111434 - 15 Nov 2022
Cited by 4 | Viewed by 1728
Abstract
In this study, to investigate how oxygen vacancy impacts the photocatalytic performance of LaNiO3, undoped and Sr-doped LaNiO3−σ nanoparticles are successfully prepared by the sol-gel method. The X-ray diffractometer (XRD) results show both two samples belong to the R-3c space [...] Read more.
In this study, to investigate how oxygen vacancy impacts the photocatalytic performance of LaNiO3, undoped and Sr-doped LaNiO3−σ nanoparticles are successfully prepared by the sol-gel method. The X-ray diffractometer (XRD) results show both two samples belong to the R-3c space group of the rhombohedral system. According to the conservation of valence and the X-ray photoelectron spectroscopy (XPS) results, it is demonstrated that Sr-doping can introduce more oxygen vacancy into LaNiO3−σ. According to photocatalytic experiments of the degradation of methyl orange (MO) solution, La0.875Sr0.125NiO3−σ shows higher photocatalytic performance than undoped LaNiO3−σ. First-principle calculation results show that the introduction of oxygen vacancy and Sr-doping can lead to the narrowing of the band gap width of LaNiO3. Full article
(This article belongs to the Special Issue Laser Spectroscopy: A Powerful Tool for Photocatalysis)
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Review

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17 pages, 3713 KiB  
Review
A Review on Pulsed Laser Preparation of Nanocomposites in Liquids and Their Applications in Photocatalysis
by Yang Li, Zhong Zheng, Jiujiang Yan, Bing Lu and Xiangyou Li
Catalysts 2022, 12(12), 1532; https://doi.org/10.3390/catal12121532 - 28 Nov 2022
Cited by 5 | Viewed by 1695
Abstract
The purpose of photocatalysis is to realize the conversion between solar energy and chemical energy, and it is essential to develop a high-performance photocatalyst under visible-light irradiation. The conventional methods for photocatalyst preparation are mainly wet chemical routes, and abundant yields can be [...] Read more.
The purpose of photocatalysis is to realize the conversion between solar energy and chemical energy, and it is essential to develop a high-performance photocatalyst under visible-light irradiation. The conventional methods for photocatalyst preparation are mainly wet chemical routes, and abundant yields can be obtained. However, the products are not neat and accompanied by chemical groups and impurities, which are not beneficial for the enhancement of photocatalytic performance. In recent years, as a powerful tool for nanomaterial fabrication, pulsed laser heating in a liquid medium has been utilized to prepare a variety of nanocomposites. Products with synergistic effects and high crystallinity can be rapidly prepared under pulsed laser selective heating, which is beneficial for obtaining more effective photocatalytic performance. In this review, the typical characteristics of pulsed laser heating in liquids and their prepared nanocomposites for photocatalytic applications are summarized. This review not only highlights the innovative works of pulsed-laser-prepared nanocomposites in liquids for photocatalysis but also briefly introduces the specific challenges and prospects of this field. Full article
(This article belongs to the Special Issue Laser Spectroscopy: A Powerful Tool for Photocatalysis)
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