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Urea Amperometric Biosensors Based on Nanostructured Polypyrrole
(Wiley-blackwellMaldenEUA, 2011)
Synthesis and characterization of mesoporous H4SiW12O40/TiO2 composites
(Nova Science Publishers, 2009)
Mesoporous H4SiW12O40 /TiO2 composites were successfully synthesized by sol-gel reactions using urea as a low-cost template, and adding tungstosilicic acid (TSA) at the same time as the template. The prepared materials ...
Hierarchical, template-free self-assembly morphologies in CeO2 synthesized via urea-hydrothermal method
(Elsevier, 2020-06)
Nano-crystalline CeO2 was synthesized via the urea-hydrothermal method without templates or structure-directing agents. The synthesis parameters Ce3+ to Ce4+ and urea to cation molar ratios, reaction temperature and reaction ...
Properties of mesoporous tungstosilicic acid/titania composites prepared by sol-gel method
(Elsevier Science, 2010-03-15)
The tungstosilicic acid/titania composites were prepared by the sol–gel method. Titanium isopropoxide was used as titania precursor, and urea as a low-cost template. The tungstosilicic acid (TSA) was added in the same step ...
Ce-Zr-Sm ternary oxides synthesized via a template free urea-hydrothermal method
(Elsevier, 2022-05-24)
Nano-crystalline Ce0.9Zr0.1-xSmxO2-δ (0 ≤ x ≤ 0.10) mixed oxides were synthesized for the first time by a urea-hydrothermal method without the use of template or structure directing agents. The use of a high molar ratio ...
Synthesis and characterization of trifluoromethanesulfonic acid supported on mesoporous titania
(Elsevier Science, 2006-12)
Mesoporous titania materials have been synthesized by using urea as a template via sol–gel reactions of titaniumisopropoxide, followed by the removal of urea by extraction with water. The solid was dried, calcined at ...
Mesoporous titania: Effect of thermal treatment on the texture and acidic properties
(Elsevier Science, 2005-04)
Mesoporous titania materials have been synthesized by using urea as low cost template via sol-gel reactions of titaniumisopropoxide, followed by removing the urea by extraction with water. They were characterized by FT-IR, ...
Crescimento de fibras de zircônia preparadas pela rota sol-gel a partir de moldes de cristal líquido
(Universidade Estadual Paulista (Unesp), 2008-02-27)
Estruturas mesoporosas auto-organizadas foram preparadas a partir do processo sol-gel utilizando-se cristais líquidos expandidos (CLE) e cristais líquidos expandidos modificados por uréia (CLEU) com nanoestrutura hexagonal ...
Crescimento de fibras de zircônia preparadas pela rota sol-gel a partir de moldes de cristal líquido
(Universidade Estadual Paulista (Unesp), 2008-02-27)
Estruturas mesoporosas auto-organizadas foram preparadas a partir do processo sol-gel utilizando-se cristais líquidos expandidos (CLE) e cristais líquidos expandidos modificados por uréia (CLEU) com nanoestrutura hexagonal ...