HREM and EDS analysis of (La, M)TiO3 (M = Zn, Mn) prepared by M/Li ion exchange

Tsurui, Takao; Wataru, Mashiko; Watanabe, Masato; Katsumata, Tetsuhiro; Inaguma, Yoshiyuki

doi:10.1093/jmicro/dfp035

Cited by 1 publication

(1 citation statement)

References 22 publications

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“…EDX analysis, presented in Figure c clearly shows that Ti, Zr and S are present on the nanocomposites depending on whether they are sulfated or not. In the EDX spectrum, the bands at 4.52 and 4.94 keV can be attributed to Ti Kα and Kβ, the band at 2.06 keV to Zr Lα1, and a weak band at 2.32 keV is attributed to S Kα. − These results are consistent with the formation of ZrO 2 -decorated TiO 2 nanocomposite modified by surface sulfate groups.…”

Section: Resultssupporting

confidence: 76%

Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid

Wnętrzak

Kwapiński

2012

ACS Appl. Mater. Interfaces

112

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TiO(2) nanorods and ZrO(2)-modified TiO(2) nanocomposites have been prepared by hydrothermal synthesis and the deposition-precipitation method. Their sulfated products were tested as solid superacid catalysts for the esterification of levulinic acid which was used as a model bio-oil molecule. SEM and TEM characterization showed that TiO(2) nanorods with diameters ranging from 20 to 200 nm and with lengths of up to 5 μm were synthesized by a hydrothermal method at 180 °C. ZrO(2) nanoparticles with the diameters ranging from 10 to 20 nm were evenly deposited on TiO(2) nanorods. IR and XPS results suggested that sulfated ZrO(2)/TiO(2) nanocomposite has higher content of sulfate groups on the surface with a S/(Zr+Ti) ratio of 13.6% than sulfated TiO(2) nanorods with a S/Ti ratio of 4.9%. The HPLC results showed that sulfated ZrO(2)/TiO(2) nanocomposite have enhanced catalytic activity for esterification reaction between levulinic acid and ethanol compared to sulfated TiO(2) nanorods. The conversion of levulinic acid to ethyl levulinate can reach to 90.4% at the reaction temperature of 105 °C after 180 min.

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Section: Resultssupporting

confidence: 76%

Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid

Wnętrzak

Kwapiński

2012

ACS Appl. Mater. Interfaces

112

View full text Add to dashboard Cite

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HREM and EDS analysis of (La, M)TiO3 (M = Zn, Mn) prepared by M/Li ion exchange

Cited by 1 publication

References 22 publications

Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid

Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid

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HREM and EDS analysis of (La, M)TiO3 (M = Zn, Mn) prepared by M/Li ion exchange

Cited by 1 publication

References 22 publications

Synthesis and Characterization of Sulfated TiO2 Nanorods and ZrO2/TiO2 Nanocomposites for the Esterification of Biobased Organic Acid

Synthesis and Characterization of Sulfated TiO2 Nanorods and ZrO2/TiO2 Nanocomposites for the Esterification of Biobased Organic Acid

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Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid

Synthesis and Characterization of Sulfated TiO₂ Nanorods and ZrO₂/TiO₂ Nanocomposites for the Esterification of Biobased Organic Acid