Enhancement of oxidative desulfurization performance over 3DOM H3PW12O40/TiO2 by HF treatment
Three-dimensional ordered (3DOM) H 3 PW 12 O 40 /TiO 2 nanocomposites with anatase TiO 2 exposed {001} facets are fabricated by HF treatment and applied as effective catalyst in oxidative desulfurization (ODS) process. The structure characterization results including SEM, TEM, XRD, N 2 adsorption-de...
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Published in | Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 22; no. 5 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.05.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Three-dimensional ordered (3DOM) H
3
PW
12
O
40
/TiO
2
nanocomposites with anatase TiO
2
exposed {001} facets are fabricated by HF treatment and applied as effective catalyst in oxidative desulfurization (ODS) process. The structure characterization results including SEM, TEM, XRD, N
2
adsorption-desorption isotherms, XPS, and FT-IR confirm the different percentage of exposed {001} facets of anatase TiO
2
and highly dispersion of Keggin-type phosphotungstic acid (HPW) on the 3DOM TiO
2
framework. The ODS performance of as-fabricated catalysts suggests that the optimal ratio of the exposed {001} facets on anatase TiO
2
is determined to be 26.83%, which exhibits superior catalytic activity for dibenzothiophene (DBT) than other catalysts. In addition, density functional theory (DFT) calculation has been applied to illustrate the influence of exposed {001} surface of anatase TiO
2
on catalytic activity of catalyst.
Grapical abstract |
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ISSN: | 1388-0764 1572-896X |
DOI: | 10.1007/s11051-020-04847-1 |