https://m2.mtmt.hu/ eng 2026-05-02 14:57 JournalArticle 36850300 VALIDATED true 0 false 2026-04-24T10:20:33.719+0000 2026-04-24T09:56:28.792+0000 2026-01-07T02:43:58.914+0000 true 10039657 Kmety Andrea /api/admin/10039657 Admin true 10039657 2026-04-24T09:56:29.402+0000 2026-04-24T09:56:29.402+0000 2026-01-27T10:27:02.874+0000 true 10072271 Andódy Katalin /api/admin/10072271 Admin true 2026-04-20T06:56:29.073+0000 true 10073918 Kovács Marcell /api/admin/10073918 Admin true Admin 10013962 /api/admin/10013962 Vasvari Lilian true 10013962 true 2026-01-27T14:45:19.129+0000 true false true 24 24 /api/publicationtype/24 PublicationType 1 true 24 JournalArticle true 10000059 Article true 24 24 /api/publicationtype/24 PublicationType 1 true 24 JournalArticle /api/subtype/10000059 Szakcikk SubType 101 true 10000059 true 1 /api/category/1 Category true 1 Kovács, Dávid Photoassisted Chemical Transformation of Cu2O Nanooctahedra into Cu2S Quantum-Dot Superstructures: Structural and Photoelectrochemical Properties true true /api/journal/20093097 REVIEWED true false false 20093097 true 2694-2461 2694-2461 Journal FOREIGN 5 6 1018 1028 1018 11 2025 Copper sulfides represent a broad range of chemical compounds, including naturally occurring minerals and wet-chemically synthesized nanoparticles. Tailoring the size, shape, and chemical composition of Cu2-x S nanoparticles enables the tuning of their optical and electronic properties allowing the switch between semiconducting and plasmonic characteristics. While the sulfidation of metals and metal oxides can even occur spontaneously under ambient storage conditions, the targeted synthesis of Cu2-x S nanoparticles mostly relies on the use of inorganic sulfur compounds. Inspired by the natural sulfidation reactions, a novel approach is developed in this paper to transform sacrificial Cu2O nanooctahedra by a short-chain organic thiol (beta-mercaptoethanol) into spherical Cu2S superstructures consisting of phase-pure Cu2S quantum dots. The optical and photoelectrochemical properties are thoroughly investigated and supplemented by advanced electron microscopy analysis to identify the phase of the superstructure building blocks. Structural and surface analyses reveal that the superstructures are composed of small (4-5 nm) Cu2S quantum dots spatially separated by a thin amorphous ligand layer. The results highlight the dual role of beta-mercaptoethanol serving both as a sulfur source and as a stabilizing ligand upon superstructure formation. To synthesize semiconductor/metal multicomponent nanostructures, the surface of the superstructures is decorated with Au nanograins initiated by the photoreduction of aqueous Au3+ ions. Upon the fabrication of working electrodes from the developed superstructures, the p-type nature of the Cu2S is demonstrated by open-circuit potentiometry. Superstructures supply negative photocurrent under UV irradiation, which can be further enhanced by the presence of Au nanograins. Using the developed synthetic method, phase-pure photofunctional nanomaterials can be prepared by the sulfidation of cuprous oxide in a controlled manner. 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http://scholar.Google.com/scholar?hl=en&lr=&cluster=11756828878044072993 false true SjrRating 11599543 /api/sjrrating/11599543 30 0.1 journal RatingType 10002 /api/ratingtype/10002 sjr true true ClassificationExternal 2505 /api/classificationexternal/2505 true 2505 true D1 FROM_LAST_YEAR true true /api/publication/36850300 <div class="JournalArticle Publication long-list"> <div class="authors"> <img title="Forrásközlemény" style="float: left" src="/frontend/resources/grid/publication-core-icon.png"> <img title="Idézőközlemény" style="float: left" src="/frontend/resources/grid/publication-citation-icon.png"> <div class="autype autype0"> <span class="author-name" mtid="10086672"><a href="/gui2/?type=authors&mode=browse&sel=10086672" target="_blank">Kovács Dávid (<span class="authorship-author-name">Kovács Dávid</span> <span class="authorAux-mtmt"> Kolloidkémia, Nanotechnológia, Anyagtudomány</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/Institute of Technical Physics and Materials Science; <span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Fotonika Laboratórium; <span title="Budapest University of Technology and Economics">BUTE</span>/<span title="Faculty of Chemical Technology and Biotechnology">FCTB</span>/Department of Physical Chemistry and Material Science</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10002050"><a href="/gui2/?type=authors&mode=browse&sel=10002050" target="_blank">Radnóczi György Z. (<span class="authorship-author-name">Radnóczi György Zoltán</span> <span class="authorAux-mtmt"> Anyagtudomány, vékonyréteg-fizika</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Vékonyrétegfizika Laboratórium</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10001480"><a href="/gui2/?type=authors&mode=browse&sel=10001480" target="_blank">Horváth Zsolt E. (<span class="authorship-author-name">Horváth Zsolt Endre</span> <span class="authorAux-mtmt"> Szilárdtestfizika</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Nanoszerkezetek Laboratórium</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10002235"><a href="/gui2/?type=authors&mode=browse&sel=10002235" target="_blank">Frey Krisztina (<span class="authorship-author-name">Frey Krisztina</span> <span class="authorAux-mtmt"> Heterogén katalízis</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Research Institute for Energy Security and Environmental Safety">RIESES</span>/Surface Chemistry and Catalysis Department</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10002024"><a href="/gui2/?type=authors&mode=browse&sel=10002024" target="_blank">Sulyok Attila (<span class="authorship-author-name">Sulyok Attila</span> <span class="authorAux-mtmt"> Felület fizika</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Vékonyrétegfizika Laboratórium</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10026942"><a href="/gui2/?type=authors&mode=browse&sel=10026942" target="_blank">Fogarassy Zsolt (<span class="authorship-author-name">Fogarassy Zsolt</span> <span class="authorAux-mtmt"> Anyagfizika</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Vékonyrétegfizika Laboratórium</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10026050"><a href="/gui2/?type=authors&mode=browse&sel=10026050" target="_blank">Pap József S. (<span class="authorship-author-name">Pap József Sándor</span> <span class="authorAux-mtmt"> bioszervetlen kémia</span>) </a> </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10002004"><a href="/gui2/?type=authors&mode=browse&sel=10002004" target="_blank">Deák András (<span class="authorship-author-name">Deák András</span> <span class="authorAux-mtmt"> Kolloid kémia, anyagtudomány</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Fotonika Laboratórium</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10040900"><a href="/gui2/?type=authors&mode=browse&sel=10040900" target="_blank">Zámbó Dániel ✉ (<span class="authorship-author-name">Zámbó Dániel</span> <span class="authorAux-mtmt"> Nanotechnológia, Kolloidkémia, Fizikai Kémia</span>) </a> </span> <span class="author-affil"><span title="HUN-REN Centre for Energy Research">HUN-REN CER</span>/<span title="Institute of Technical Physics and Materials Science">MFA</span>/Fotonika Laboratórium</span> </div> </div> <div class="title"><a href="/gui2/?mode=browse&params=publication;36850300" target="_blank">Photoassisted Chemical Transformation of Cu2O Nanooctahedra into Cu2S Quantum-Dot Superstructures: Structural and Photoelectrochemical Properties</a></div> <div> <span class="journal-title">ACS MATERIALS AU</span> <span class="journal-issn">(<a target="_blank" href="https://portal.issn.org/resource/ISSN/2694-2461">2694-2461</a> <a target="_blank" href="https://portal.issn.org/resource/ISSN/2694-2461">2694-2461</a>)</span>: <span class="journal-volume">5</span> <span class="journal-issue">6</span> <span class="page"> pp 1018-1028 </span> <span class="year">(2025)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Language: English | </span> <span class="identifiers"> <span class="id identifier oa_GOLD" title=" Gold "> <a style="color:blue" title="10.1021/acsmaterialsau.5c00106" target="_blank" href="https://doi.org/10.1021/acsmaterialsau.5c00106"> DOI </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="001549276600001" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/001549276600001"> WoS </a> </span> <span class="id identifier oa_GREEN" title=" Green "> <a style="color:blue" title="224276" target="_blank" href="http://real.mtak.hu/224276"> REAL </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="105021867181" target="_blank" href="http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-105021867181"> Scopus </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="41245575" target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=41245575&dopt=Abstract"> PubMed </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="11756828878044072993" target="_blank" href="http://scholar.Google.com/scholar?hl=en&lr=&cluster=11756828878044072993"> Google scholar </a> </span> </span> <OnlyViewableByAuthor><div class="ratings"> <div class="journal-subject">Journal subject: Scopus - Materials Chemistry&nbsp;&nbsp;&nbsp;Rank:&nbsp;D1</div> <div class="journal-subject">Journal subject: Scopus - Polymers and Plastics&nbsp;&nbsp;&nbsp;Rank:&nbsp;D1</div> <div class="journal-subject">Journal subject: Scopus - Biomaterials&nbsp;&nbsp;&nbsp;Rank:&nbsp;Q1</div> <div class="journal-subject">Journal subject: Scopus - Electronic, Optical and Magnetic Materials&nbsp;&nbsp;&nbsp;Rank:&nbsp;Q1</div> </div></OnlyViewableByAuthor> <div class="publication-citation" style="margin-left: 0.5cm;"> <span title="" class="citingPub-count">Citing papers: 1</span> | Independent citation: 1 | Self citation: 0 | Unknown citation: 0 | Number of citations in WoS: 1 | WoS/Scopus assigned:&nbsp;1 | Number of citations with DOI:&nbsp;1 </div> <div class="publication-citation"> <a target="_blank" href="/api/publication?cond=citations.related;eq;36850300&sort=publishedYear,desc&sort=title"> Number of cited publications: 6 </a> </div> <div class="mtid"><span class="long-pub-mtid">Publication: 36850300</span> | <span class="status-data status-VALIDATED"> Validated </span> Core Citing | <span class="type-subtype">Journal Article ( Article ) </span> | <span class="pub-category">Scientific</span> | <span class="publication-sourceOfData">RIS-Egyéb</span> </div> <div class="funder"> (TKP2021-NKTA-05), (TKP2021-NKTA-05), (FK 142148), (TKP2021-NKTA-05) </div> <div class="lastModified">Last Modified: 2026.04.24. 11:56 Andrea Bolgár (MFA admin 4) </div> <div class="lockedBy">Centrally managed 2026.01.27. 15:45 Lilian Vasvari (MTMT Központ, admin) </div> </div></div>