Enhancing near‐infrared photocatalytic activity and upconversion luminescence of BiOCl: Yb3+-Er3+ nanosheets with polypyrrole in-situ modification

2021 ◽  
Author(s):  
Youzhun Fan ◽  
Tianhui Wang ◽  
Yingying Zhang ◽  
Qibing Li ◽  
Zhijie Wu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Absorption Enhancement ◽  
Rare Earth Ion ◽  
Photophysical Process ◽  
In Situ Modification ◽  
Light Conversion Efficiency

Photocatalytic behavior and upconversion (UC) luminescence of rare earth ion (RE) are two opposite photophysical process, but improving the ultimate light conversion efficiency, light absorption enhancement and suppression of excited...

Enhanced photocatalytic activity of tetragonal BiVO 4 : Influenced by rare earth ion Yb 3+

2014 ◽  
Vol 133 ◽  
pp. 20-23 ◽  
Author(s):  
Jing Huang ◽  
Guoqiang Tan ◽  
Lili Zhang ◽  
Huijun Ren ◽  
Ao Xia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Rare Earth Ion

Significant enhancement of cathode-ray scintillation for a conductive Bi-SMOF via in situ partial rare earth ion replacement

2019 ◽  
Vol 7 (36) ◽  
pp. 11099-11103 ◽  
Author(s):  
Jian Lu ◽  
Xiu-Hui Zhao ◽  
Bing Bai ◽  
Fa-Kun Zheng ◽  
Guo-Cong Guo
Keyword(s):  
Rare Earth ◽  
Rare Earth Ions ◽  
Significant Enhancement ◽  
Partial Replacement ◽  
Rare Earth Ion ◽  
Luminescence Performance

Through in situ partial replacement of Bi3+ ions with rare earth ions like Eu3+ in a conductive Bi(iii)–MOF matrix, the cathode-ray luminescence performance gets significantly enhanced.

Modified TiO2Structures with Enhanced Photoluminescence and Photocatalytic Activity

2021 ◽  
Vol 13 (2) ◽  
pp. 331-341
Author(s):  
Jinqi Wang ◽  
Guopeng Li ◽  
Wei Wang ◽  
Fuxia Li ◽  
Chuankai Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Photocatalytic Degradation ◽  
Environmental Remediation ◽  
Rare Earth Ions ◽  
Shell Structures ◽  
Rare Earth Complex ◽  
Core Shell ◽  
Rare Earth Ion ◽  
The Rare Earth

Photocatalytic degradation of pollutants has attracted much attention because it can effectively solve the problem of environmental pollution. SiO2@Eu(TTA)3phen@TiO2 core-shell structures were successfully synthesized for the first time by a solvothermal method involving ultrasound assistance which can optimize the rare earth complex dispersibility and achieve strong emission intensity. SiO2@Eu3+@TiO2 core-shell structures were also successfully synthesized by a similar method. Photocatalytic activity analysis showed that the photocatalytic activity factor not only depended on the rare earth ion content, but also related to the structure and size of the TiO2 nanoparticles. Photocatalytic activity increased first and then decreased with the quantity of rare earth ions. Photocatalytic activity was also superior for hollow structures compared to solid structure. Photocatalytic activity of SiO2@TiO2 particles increased with the particle size, until the size increased to 450 nm. Rare earth ions content as well as particle structures and sizes affected efficiency for the photocatalytic degradation of methyl orange. Outstanding photocatalytic activity provides the composite particles with improved potential to purify aquatic contaminants and to meet the demands of future environmental remediation applications.

Cancer-targeted near infrared imaging using rare earth ion-doped ceramic nanoparticles

2015 ◽  
Vol 3 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Tamotsu Zako ◽  
Miya Yoshimoto ◽  
Hiroshi Hyodo ◽  
Hidehiro Kishimoto ◽  
Masaaki Ito ◽  
...  
Keyword(s):  
Rare Earth ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Human Colon ◽  
Oxide Nanoparticles ◽  
Rare Earth Ion ◽  
Human Colon Cancer ◽  
Nir Imaging ◽  
Cancer Tissues ◽  
Yttrium Oxide Nanoparticles

Cancer-specific NIR–NIR imaging was demonstrated using streptavidin-functionalized rare earth ion-doped yttrium oxide nanoparticles and biotinylated antibodies on cancer cells and human colon cancer tissues.

Spectroscopic research of upconversion nanomaterials based on complex oxide compounds doped with rare-earth ion pairs: Benefit for cancer diagnostics by upconversion fluorescence and radio sensitive methods/Spektroskopische Untersuchung von mit Ionenpaaren Seltener Erden dotierten Upconversion-Nanokompositen: Nutzen für die Krebsdiagnostik durch Upconversion-Fluoreszenz und strahlungssensitive Methoden

2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Anastasia V. Ryabova ◽  
Daria V. Pominova ◽  
Victoria A. Krut’ko ◽  
Maria G. Komova ◽  
Victor B. Loschenov
Keyword(s):  
Rare Earth ◽  
Upconversion Luminescence ◽  
Ion Pairs ◽  
Biological Tissues ◽  
Cancer Diagnostics ◽  
Inorganic Nanoparticles ◽  
Deep Penetration ◽  
Rare Earth Ion ◽  
Biological Studies ◽  
Upconversion Nanocrystals

AbstractHighly photochemically stable nanoparticles, in which upconversion luminescence can be excited – so-called upconversion nanocrystals (UC-NCs) – exhibit widely separated (up to 500 nm) narrow luminescence bands in the visible (VIS) region located far from the excitation near-infrared (NIR) laser radiation, and thus can be more easily identified compared to organic luminophores and semiconductor nanoparticles. Due to a deep penetration of exciting infrared (IR) radiation, the absence of parasitic fluorescence of biomolecules and the absence of phototoxicity and photobleaching upon near IR excitation, UC-NCs can be efficiently used as fluorescent probes in biological studies and fluorescence diagnostics (FD). The doping of such nanoparticles with GdWe studied the upconversion characteristics of inorganic nanoparticles made of different materials doped with rare-earth ion (REI) pairs YbBased on the results obtained, the matrix LaThe investigated complex polycrystalline oxide compounds are promising as diagnostic agents for biological tissues visualization by fluorescence, light scattering, and nuclear magnetic resonance imaging.

Temperature-sensing luminescent materials La9.67Si6O26.5:Yb3+–Er3+/Ho3+ based on pump-power-dependent upconversion luminescence

2020 ◽  
Vol 7 (24) ◽  
pp. 4892-4901
Author(s):  
Jia Zhang ◽  
Jiajun Chen ◽  
Yining Zhang
Keyword(s):  
Rare Earth ◽  
Pump Power ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Luminescent Materials ◽  
Rare Earth Ion ◽  
Potential Applications

Rare earth ion doped upconversion (UC) luminescent materials could show potential applications in optical temperature sensing.

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