Periodic binary Si:Ti, Si:Al mixed macroporous oxides with ultrahigh heteroatom loading: A facile sol-gel approach

Steven M. Hant; George S. Attard; Rodney Riddle; Kevin M. Ryan

doi:10.1021/cm0482582

Periodic binary Si:Ti, Si:Al mixed macroporous oxides with ultrahigh heteroatom loading: A facile sol-gel approach

Steven M. Hant, George S. Attard, Rodney Riddle, Kevin M. Ryan

Research output: Contribution to journal › Article › peer-review

Abstract

(Chemical Equation Presented) Highly ordered macroporous mixed metal oxides were prepared with very high mixed metal ratios using an optimized silicon alkoxide prehydrolysis process. The homogeneous solutions completely filled the interstitial voids in polymethyl methacrylate artificial opal templates. Subsequent template removal resulted in highly ordered aluminosilicate and titanosilicate inverse opal pore networks. The optimized process allowed the fabrication of periodic binary metal oxide frameworks with 2:1 Si:Al loadings and 1:1 Si:Ti loadings. The mixed metal oxides did not show any phase segregation during high-temperature template removal as evidenced by X-ray diffraction, energy-dispersive X-ray analysis, and Fourier-transform IR spectroscopy. The as-formed macroporous metal oxides demonstrate excellent substrate adherence and mechanical stability and showed refractive index modulation in direct relation to the silicon/ heterometal ratio in the precursor sol.

Original language	English
Pages (from-to)	1434-1440
Number of pages	7
Journal	Chemistry of Materials
Volume	17
Issue number	6
DOIs	https://doi.org/10.1021/cm0482582
Publication status	Published - 22 Mar 2005
Externally published	Yes

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title = "Periodic binary Si:Ti, Si:Al mixed macroporous oxides with ultrahigh heteroatom loading: A facile sol-gel approach",

abstract = "(Chemical Equation Presented) Highly ordered macroporous mixed metal oxides were prepared with very high mixed metal ratios using an optimized silicon alkoxide prehydrolysis process. The homogeneous solutions completely filled the interstitial voids in polymethyl methacrylate artificial opal templates. Subsequent template removal resulted in highly ordered aluminosilicate and titanosilicate inverse opal pore networks. The optimized process allowed the fabrication of periodic binary metal oxide frameworks with 2:1 Si:Al loadings and 1:1 Si:Ti loadings. The mixed metal oxides did not show any phase segregation during high-temperature template removal as evidenced by X-ray diffraction, energy-dispersive X-ray analysis, and Fourier-transform IR spectroscopy. The as-formed macroporous metal oxides demonstrate excellent substrate adherence and mechanical stability and showed refractive index modulation in direct relation to the silicon/ heterometal ratio in the precursor sol.",

author = "Hant, {Steven M.} and Attard, {George S.} and Rodney Riddle and Ryan, {Kevin M.}",

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T1 - Periodic binary Si:Ti, Si:Al mixed macroporous oxides with ultrahigh heteroatom loading

T2 - A facile sol-gel approach

AU - Hant, Steven M.

AU - Attard, George S.

AU - Riddle, Rodney

AU - Ryan, Kevin M.

PY - 2005/3/22

Y1 - 2005/3/22

N2 - (Chemical Equation Presented) Highly ordered macroporous mixed metal oxides were prepared with very high mixed metal ratios using an optimized silicon alkoxide prehydrolysis process. The homogeneous solutions completely filled the interstitial voids in polymethyl methacrylate artificial opal templates. Subsequent template removal resulted in highly ordered aluminosilicate and titanosilicate inverse opal pore networks. The optimized process allowed the fabrication of periodic binary metal oxide frameworks with 2:1 Si:Al loadings and 1:1 Si:Ti loadings. The mixed metal oxides did not show any phase segregation during high-temperature template removal as evidenced by X-ray diffraction, energy-dispersive X-ray analysis, and Fourier-transform IR spectroscopy. The as-formed macroporous metal oxides demonstrate excellent substrate adherence and mechanical stability and showed refractive index modulation in direct relation to the silicon/ heterometal ratio in the precursor sol.

AB - (Chemical Equation Presented) Highly ordered macroporous mixed metal oxides were prepared with very high mixed metal ratios using an optimized silicon alkoxide prehydrolysis process. The homogeneous solutions completely filled the interstitial voids in polymethyl methacrylate artificial opal templates. Subsequent template removal resulted in highly ordered aluminosilicate and titanosilicate inverse opal pore networks. The optimized process allowed the fabrication of periodic binary metal oxide frameworks with 2:1 Si:Al loadings and 1:1 Si:Ti loadings. The mixed metal oxides did not show any phase segregation during high-temperature template removal as evidenced by X-ray diffraction, energy-dispersive X-ray analysis, and Fourier-transform IR spectroscopy. The as-formed macroporous metal oxides demonstrate excellent substrate adherence and mechanical stability and showed refractive index modulation in direct relation to the silicon/ heterometal ratio in the precursor sol.

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Periodic binary Si:Ti, Si:Al mixed macroporous oxides with ultrahigh heteroatom loading: A facile sol-gel approach

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