https://scholars.lib.ntu.edu.tw/handle/123456789/606921
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Luo P | en_US |
dc.contributor.author | Ye M | en_US |
dc.contributor.author | Zhou W | en_US |
dc.contributor.author | Wan P | en_US |
dc.contributor.author | Ma Z | en_US |
dc.contributor.author | Qiu Z | en_US |
dc.contributor.author | Zhang J | en_US |
dc.contributor.author | RU-SHI LIU | en_US |
dc.contributor.author | Lian S. | en_US |
dc.date.accessioned | 2022-04-25T06:39:13Z | - |
dc.date.available | 2022-04-25T06:39:13Z | - |
dc.date.issued | 2022 | - |
dc.identifier.issn | 13858947 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124323020&doi=10.1016%2fj.cej.2022.134951&partnerID=40&md5=b22e141bb1f8dcc5a7742b6d5b666575 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/606921 | - |
dc.description.abstract | The traditional strategy to improve material stability is to cover the surface with a shell to resist adverse environmental factors. For the red-emitting fluoride materials with easily hydrolyzed Mn4+ on the surface, many strategies have been reported with limited effectiveness. In this work, simultaneous construction of an impermeable dual-shell on Mn4+-doped fluoride is proposed to solve the instability problem by a simple pyruvic acid (PA) treatment. The internal quantum efficiency of the K2SiF6:Mn4+ with dual-shell can be optimized up to 99.71%, the photoluminescence intensity can maintain 88.5% of the original intensity after soaking in water for 360 h, and the body color is not changed even in boiling. The reduction effect of the PA solution builds a hard fluoride shell by removal of the surface Mn4+, and the hydrogen bonding effect of PA molecular leads to the formation of a soft organic shell. The dual-shell can effectively block the damage of fluoride by external water molecules and achieve a significant improvement in water stability. The dual effect of PA is derived from its special molecular structure containing α-ketone carbonyl and carboxyl groups. This hypothesis is supported by the results of the moisture resistance of fluoride-treated with a variety of solvents similar in molecular structure to PA. In addition, DFT calculations simulated various hydrogen bond structures that may be formed between PA molecules and fluoride surface atoms. ? 2022 Elsevier B.V. | - |
dc.relation.ispartof | Chemical Engineering Journal | - |
dc.subject | Core-Shell-Shell | - |
dc.subject | Fluoride | - |
dc.subject | Mn4+ | - |
dc.subject | Water Stability | - |
dc.subject | White Light-Emitting Diodes | - |
dc.subject | Fluorine compounds | - |
dc.subject | Hydrogen bonds | - |
dc.subject | Ketones | - |
dc.subject | Manganese compounds | - |
dc.subject | Molecules | - |
dc.subject | Stability | - |
dc.subject | Core shell | - |
dc.subject | Core-shell-shell | - |
dc.subject | Environmental factors | - |
dc.subject | Materials stability | - |
dc.subject | Pyruvic acid | - |
dc.subject | Red-emitting | - |
dc.subject | Water stability | - |
dc.subject | White light emitting diodes | - |
dc.subject | Shells (structures) | - |
dc.title | Simultaneous construction of impermeable dual-shell stabilizing fluoride phosphors for white light-emitting diodes | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.cej.2022.134951 | - |
dc.identifier.scopus | 2-s2.0-85124323020 | - |
dc.relation.journalvolume | 435 | - |
item.fulltext | no fulltext | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.grantfulltext | none | - |
item.openairetype | journal article | - |
crisitem.author.dept | Chemistry | - |
crisitem.author.orcid | 0000-0002-1291-9052 | - |
crisitem.author.parentorg | College of Science | - |
顯示於: | 化學系 |
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