scholarly journals Composition-dependent surface chemistry of colloidal BaxSr1−xTiO3 perovskite nanocrystals

2016 ◽  
Vol 52 (95) ◽  
pp. 13791-13794 ◽  
Author(s):  
Tigran Margossian ◽  
Sean P. Culver ◽  
Kim Larmier ◽  
Feng Zhu ◽  
Richard L. Brutchey ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Alkaline Earth ◽  
State Of The Art ◽  
Sol Gel ◽  
Adsorption Properties ◽  
Vapor Diffusion ◽  
Gel Method ◽  
Perovskite Nanocrystals ◽  
Sol Gel Method

BaxSr1−xTiO3 perovskite nanocrystals, prepared by the vapor diffusion sol–gel method and characterized by state of the art surface techniques, display significantly different O–H stretching frequencies and adsorption properties towards CO2 as a function of the alkaline earth composition (Ba vs. Sr).

Synthesis and adsorption properties of chitosan-silica nanocomposite prepared by sol-gel method

nano Online ◽  
2016 ◽  
Author(s):  
Tetyana M Budnyak ◽  
Ievgen V Pylypchuk ◽  
Valentin A Tertykh ◽  
Elina S Yanovska ◽  
Dorota Kolodynska
Keyword(s):  
Sol Gel ◽  
Adsorption Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Nanocomposite

scholarly journals Synthesis and adsorption properties of chitosan-silica nanocomposite prepared by sol-gel method

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Tetyana M Budnyak ◽  
Ievgen V Pylypchuk ◽  
Valentin A Tertykh ◽  
Elina S Yanovska ◽  
Dorota Kolodynska
Keyword(s):  
Sol Gel ◽  
Adsorption Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Nanocomposite

Structure and adsorption properties of the composites ‘silica gel–sodium sulphate’, obtained by sol–gel method

2014 ◽  
Vol 64 (1-2) ◽  
pp. 408-412 ◽  
Author(s):  
Kostyantyn M. Sukhyy ◽  
Elena A. Belyanovskaya ◽  
Yaroslav N. Kozlov ◽  
Elena V. Kolomiyets ◽  
Mikhaylo P. Sukhyy
Keyword(s):  
Silica Gel ◽  
Sol Gel ◽  
Sodium Sulphate ◽  
Adsorption Properties ◽  
Gel Method ◽  
Sol Gel Method

Very Low-Temperature, Gram-Scale Synthesis of Monodisperse BaTiO3 Nanocrystals via an Interfacial Hydrolysis Reaction

2008 ◽  
Vol 1094 ◽  
Author(s):  
Daniel E. Morse ◽  
Richard L. Brutchey
Keyword(s):  
Low Temperature ◽  
Sol Gel ◽  
Cubic Phase ◽  
Vapor Diffusion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Stabilizing Agents ◽  
Nanocrystal Growth ◽  
Ptcr Effect ◽  
Post Synthesis

AbstractA vapor diffusion sol-gel method is reviewed for the preparation of high-quality BaTiO3 nanocrystals on the gram scale at very low temperatures. The synthesis is based on the kinetically controlled introduction of water into a solution of the bimetallic alkoxide, BaTi(O2C4H9)6, where slow hydrolysis then occurs at the vapor-solution interface followed by nucleation and nanocrystal growth at 16 °C. The resulting 6-nm, quasi-spherical nanocrystals are both monodisperse (without stabilizing agents or size selecting purification) and highly crystalline (without any post-synthesis heat treatment), and are isolated in yields near 100%. Based on new permittivity and calorimetry data, the crystal structure of the nanocrystals is most likely in the paraelectric cubic phase (space group Pm3m) at room temperature, which corroborates previous diffraction data. It was also demonstrated that the BaTiO3 nanocrystals can be doped with trivalent lanthanum cations using the same low-temperature vapor diffusion sol-gel method to yield donor-doped Ba1−xLaxTiO3, which exhibits a considerable PTCR effect.

scholarly journals Removal of aqueous Hg(ii) by thiol-functionalized nonporous silica microspheres prepared by one-step sol–gel method

RSC Advances ◽  
2020 ◽  
Vol 10 (31) ◽  
pp. 18534-18542 ◽  
Author(s):  
Ruixue Liang ◽  
Hua Zou
Keyword(s):  
Sol Gel ◽  
Adsorption Properties ◽  
Silica Microspheres ◽  
Gel Method ◽  
Sol Gel Method ◽  
One Step

The adsorption properties of nonporous SiO2-SH microspheres prepared by a one-step sol–gel method for Hg(ii) in water were studied.

scholarly journals Low-temperature synthesis of homogeneous solid solutions of scheelite-structured Ca1−xSrxWO4 and Sr1−xBaxWO4 nanocrystals

2015 ◽  
Vol 44 (33) ◽  
pp. 15042-15048 ◽  
Author(s):  
Sean P. Culver ◽  
Matthew J. Greaney ◽  
Antonio Tinoco ◽  
Richard L. Brutchey
Keyword(s):  
Low Temperature ◽  
Solid Solutions ◽  
Sol Gel ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Vapor Diffusion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Elemental Stoichiometry

The vapor diffusion sol–gel method was used to synthesize complex ternary scheelite nanocrystals of arbitrary and well-defined elemental stoichiometry.

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