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Minerals
Special Issues
Luminescence Properties of Minerals: Technological Applications and Modeling
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Luminescence Properties of Minerals: Technological Applications and Modeling

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Crystallography and Physical Chemistry of Minerals & Nanominerals".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 6653

Special Issue Editors

Dr. Sylvie Villain

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Guest Editor
Institut Matériaux Microélectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Université du Sud Toulon-Var, BP 20132, 83957, La Garde Cedex, France
Interests: nanomaterials; self-assembled materials; smart materials; electrical measurement; photoluminescence; photodegradation
Dr. Bahcine Bakiz

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Guest Editor
Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Département de Chimie, BP 8106, Cité Dakhla, Agadir, Morocco
Interests: rare earths; materiel sciences; solid–gas interactions; catalysis; modeling; gas sensors; photoluminescence; photodegradation
Dr. Frédéric Guinneton

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Guest Editor
Institut Matériaux Microélectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Université du Sud Toulon-Var, BP 20132, 83957, La Garde Cedex, France
Interests: material characterization; materials; nanotechnology; X-ray diffraction; materials processing; thin films; materials chemistry; catalyst; photocatalysis; photoluminescence; PLD

Special Issue Information

Dear Colleagues,

While luminescence has been the subject of many observations since Antiquity, it was only really understood in the twentieth century, after many questions and controversies.

In recent years, interest has grown in the field of luminescent materials. The applications of such materials are indeed many and varied: lighting, display (we note in particular the new electroluminescent flat screens and screens for intensifying X-ray images), lasers, optical telecommunications, renewable energy (including photovoltaic), medicine (particularly marking in biological imaging), radiation detection, etc. This list is not exhaustive and shows that this type of luminescent material has a more than significant technological potential.

Mineral luminescent materials are considered to be informative tools capable of probing recombination, charge carrier transport, and defect migration.

Devoting a Special Issue to the luminescence of mineral materials therefore seems relevant. This Special Issue will focus on the following issues: characterization, understanding, and origin of luminescence in minerals; control of photoluminescence (e.g., control of emission color); and adaptability to the desired application of luminescent materials.

Review contributions as well as original research papers within the topic are welcomed in this Special Issue.

Dr. Sylvie Villain
Dr. Bahcine Bakiz
Dr. Frédéric Guinneton
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. Minerals 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 2400 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

  • Photoluminescence
  • Materials science
  • Minerals
  • Rare earths
  • Modeling
  • Doping effects

Published Papers (3 papers)

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Research

11 pages, 2927 KiB  
Article
Unusual Luminescence of Quartz from La Sassa, Tuscany: Insights on the Crystal and Defect Nanostructure of Quartz Further Developments
by Andrea Maurizio Monti, Giulia Ricci, Marco Martini, Anna Galli, Federico Lugli, Maria Chiara Dalconi and Gilberto Artioli
Minerals 2022, 12(7), 828; https://doi.org/10.3390/min12070828 - 29 Jun 2022
Viewed by 1384
Abstract
Quartz luminescence finds applications on many fields, but much work still needs to be done to precisely characterize it. In this work, we made further developments on the study of luminescence of quartz from La Sassa, Tuscany: a sample with unique properties in [...] Read more.
Quartz luminescence finds applications on many fields, but much work still needs to be done to precisely characterize it. In this work, we made further developments on the study of luminescence of quartz from La Sassa, Tuscany: a sample with unique properties in this regard. Photoluminescence (PL) measurements allowed study of the excitation profile of the previously reported luminescence, showing an excitation maximum at around 4.3 eV, among other minor ones. This kind of luminescence has also been studied as a function of X-ray irradiation, showing that ionizing radiation desensitizes the photoluminescence emissions. New radioluminescence (RL) measurements have been done to study the effect of thermal annealing at 1000 °C, showing a more complex emission picture in the red region (1.8–2.0 eV), with multiple emissions. The data presented here allow more precise assumptions regarding the assignment of the centers responsible for each emission. The assignment has been confirmed by chemical profiles measured by laser-ablation inductively coupled plasma (ICP) mass spectrometry. The previously tentative assignment of non-bridging oxygen hole centers (NBOHCs) has been disproved for the PL and LIF emissions and confirmed for the RL ones. Full article
(This article belongs to the Special Issue Luminescence Properties of Minerals: Technological Applications and Modeling)
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14 pages, 3196 KiB  
Article
Unusual Luminescence of Quartz from La Sassa, Tuscany: Insights on the Crystal and Defect Nanostructure of Quartz
by Giulia Ricci, Andrea Maurizio Monti, Renato Pagano, Marco Martini, Luisa Caneve and Gilberto Artioli
Minerals 2021, 11(12), 1345; https://doi.org/10.3390/min11121345 - 30 Nov 2021
Cited by 3 | Viewed by 2452
Abstract
Quartz from La Sassa (Tuscany, Italy) presents a unique luminescence related to intrinsic and extrinsic defects in the crystal lattice due to the growth mechanisms in hydrothermal conditions. The bright fluorescence under the UV lamp was apparent to collectors since the early 1970s, [...] Read more.
Quartz from La Sassa (Tuscany, Italy) presents a unique luminescence related to intrinsic and extrinsic defects in the crystal lattice due to the growth mechanisms in hydrothermal conditions. The bright fluorescence under the UV lamp was apparent to collectors since the early 1970s, and it entered the literature as a reference case of yellow-luminescent quartz. Early reports present the history of the discovery, the geological context, and preliminary luminescence measurements of the quartz nodules, suggesting various activators as potentially responsible of the peculiar luminescence effects: uranyl groups (UO22+), rare earths (Tb3+, Eu3+, Dy3+, Sm3+, Ce3+) and polycyclic aromatic compounds (PAH). Here, we report a full investigation of the La Sassa material, by a multi-analytical approach encompassing cathodoluminescence optical microscopy (OM-CL), laser-induced fluorescence (LIF), wavelength resolved thermally stimulated luminescence (WR-TSL), trace elements analysis by mass spectrometry (ICP-MS) and Raman spectroscopy (RS). The results provide a significant step forward in the interpretation of the luminescence mechanisms: the main luminescent centres are identified as alkali-compensated (mainly Li+ and Na+, K+ and H+) aluminum [AlO4/M+]0 centres substituting for Si, where the recombination of a self-trapped exciton (STE) or an electron at a nonbridging oxygen hole centre (NBOHC) are active. Full article
(This article belongs to the Special Issue Luminescence Properties of Minerals: Technological Applications and Modeling)
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17 pages, 4648 KiB  
Article
Phase Transformation, Photocatalytic and Photoluminescent Properties of BiPO4 Catalysts Prepared by Solid-State Reaction: Degradation of Rhodamine B
by Abdessalam Bouddouch, Elhassan Amaterz, Bahcine Bakiz, Aziz Taoufyq, Frédéric Guinneton, Sylvie Villain, Jean-Raymond Gavarri, Jean-Christophe Valmalette and Abdeljalil Benlhachemi
Minerals 2021, 11(9), 1007; https://doi.org/10.3390/min11091007 - 15 Sep 2021
Cited by 8 | Viewed by 2168
Abstract
Polycrystalline bismuth phosphate BiPO4 was synthesized by solid-state reaction at different temperatures varying from 500 to 900 °C. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS) and Raman spectroscopy. The low-temperature phase of [...] Read more.
Polycrystalline bismuth phosphate BiPO4 was synthesized by solid-state reaction at different temperatures varying from 500 to 900 °C. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS) and Raman spectroscopy. The low-temperature phase of BiPO4 has monoclinic structure with a space group P21/n, and was transformed into the monoclinic phase P21/m with a slight distortion of monoclinic lattice when it was heated above 500 °C. The effect of the transformation on the structure, morphology and photocatalytic properties was examined. The photocatalytic activity of each sample, in presence of Rhodamine B (RhB) in aqueous solution, was carried out and analyzed under UV light irradiation. Photoexperiments showed that the material prepared at 500 °C is the best catalyst with degradation efficiency of the order of 96% after 12 min of reaction time under UV light irradiation. This high photocatalytic efficiency could be due to their structural and morphological changes. The photocatalytic degradation mechanism of RhB in the presence of the best photocatalyst BiP-500 °C is proposed. The stability of the catalyst was also examined by carrying out four successive tests of the degradation in the presence of BiP-500 °C. Total organic carbon (TOC) was used to further estimate the rate of mineralization in the presence of BiP-500 °C (83% TOC removal). Photoluminescence experiments performed under UV-laser light irradiation revealed emissions in the green-orange range, with optimal intensities for the mix systems observed at 550 °C. Full article
(This article belongs to the Special Issue Luminescence Properties of Minerals: Technological Applications and Modeling)
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