scholarly journals Possibility of Superconductivity in a Layered Perovskite Niobate, KCa2Nb3O10, Synthesized by an Ion Exchange Reaction

2006 ◽  
Vol 114 (1334) ◽  
pp. 861-865 ◽  
Author(s):  
Sachi TAKEZAWA ◽  
Takashi TERANISHI ◽  
Hironori ISHIKAWA ◽  
Toshiaki TOKUMITSU ◽  
Kenji TODA ◽  
...  
CrystEngComm ◽  
2015 ◽  
Vol 17 (45) ◽  
pp. 8703-8709 ◽  
Author(s):  
Yingqi Wang ◽  
Xiaofang Lai ◽  
Xujie Lü ◽  
Yanting Li ◽  
Qinglong Liu ◽  
...  

The photocatalytic activity of the layered perovskite K2La2Ti3O10 was regulated by an ion-exchange reaction with a series of cations – Ca2+, Sr2+, and Ba2+. The underlying mechanism of the improved performance and an effective model for designing the photocatalyst were discussed.


2006 ◽  
Vol 301 ◽  
pp. 227-230
Author(s):  
Kenji Toda ◽  
Hiroki Sato ◽  
Akira Sugawara ◽  
Saori Tokuoka ◽  
Kazuyoshi Uematsu ◽  
...  

We present a new method for soft chemical synthesis of perovskite materials. Perovskite K1-xLixNbO3 powders are produced by an ion-exchange reaction of layered perovskite precursor, K2NbO3F, with lithium chloride in water at room temperature. X-ray diffraction and X-ray fluorescent spectroscopic studies show that a mechanism of the ion-exchange reaction is a self-assembly between the perovskite nanosheets in aqueous solution.


1999 ◽  
Vol 64 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Gabriel Čík ◽  
František Šeršeň ◽  
Alena Bumbálová

The formation of reactive oxygen species due to irradiation by a visible light of the polythiophene deposited in ZSM-5 zeolite channels in aqueous medium has been studied. Polymerization of thiophene was carried out in zeolite channels after the ion-exchange reaction of Na+ for Fe3+. By means of EPR spectroscopy, the temporarily generated 1O2 in irradiated aqueous medium was proved. The formation of O2-• was confirmed by the reduction of Fe3+-cytochrome c. Irradiation led to the water reduction to hydrogen.


2021 ◽  
Vol 9 (1) ◽  
pp. 104889
Author(s):  
Wyllamanney da S. Pereira ◽  
Fabrício B. Destro ◽  
Cipriano B. Gozzo ◽  
Edson R. Leite ◽  
Júlio C. Sczancoski

Author(s):  
Bei Peng ◽  
Yawen Shi ◽  
Xin Zhang ◽  
Peiwen Lv

BiVO4 is one of the fascinating materials with excellent photocatalytic properties. A top-down approach composed of solid state reaction and ion exchange reaction is introduced to fabricate Ti doped BiVO4...


The Analyst ◽  
2021 ◽  
Author(s):  
Ling Zhu ◽  
Zipeng Yin ◽  
Zijian Lv ◽  
Mei-Jin Li ◽  
Dianping Tang

Prostate-specific antigen (PSA), a glycoprotein that is most likely to cause prostate cancer, has attracted widespread attention in recent years due to its increasing threat to people's life and health....


1994 ◽  
Vol 75 (3) ◽  
pp. 1557-1564 ◽  
Author(s):  
M. T. S. Nair ◽  
P. K. Nair ◽  
R. A. Zingaro ◽  
E. A. Meyers

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