TY - JOUR

T1 - TiO2 immobilized on 2D mordenite: effect of hydrolysis conditions on structural, textural, and optical characteristics of the nanocomposites

AU - Shelyapina, Marina

AU - Yocupicio-Gaxiola, R.I.

AU - Valkovsky, Gleb

AU - Petranovskii, V.

PY - 2025/2/10

Y1 - 2025/2/10

N2 - A series of novel TiO 2/2D mordenite nanocomposites were synthetized by the introduction of titanium tetraethoxide (TEOT) into the interlamellar space of 2D mordenite, its subsequent hydrolysis in water or a solution of 70% ethanol in water for 6, 12, and 24 h, and calcination. The resulting TiO 2/2D mordenite materials were studied by a set of complementary characterization techniques, including XRD, SEM-EDX, TGA, N 2 sorption, NMR, XPS and UV-vis spectrometry. It was observed that treatment in 70% ethanol solution preserves the ordered layered structure of 2D mordenite because TEOT hydrolysis is slowed down. This, in turn, leads to higher mesoporosity after calcination due to anatase nanoparticles of about 4 nm preventing the collapse of the interlamellar space. Immobilization of TiO 2 on the zeolite surface is evidenced by the formation of Si-O-Ti bonds. The bandgap width of the synthetized nanocomposites was found to be sensitive to the hydrolysis medium.

AB - A series of novel TiO 2/2D mordenite nanocomposites were synthetized by the introduction of titanium tetraethoxide (TEOT) into the interlamellar space of 2D mordenite, its subsequent hydrolysis in water or a solution of 70% ethanol in water for 6, 12, and 24 h, and calcination. The resulting TiO 2/2D mordenite materials were studied by a set of complementary characterization techniques, including XRD, SEM-EDX, TGA, N 2 sorption, NMR, XPS and UV-vis spectrometry. It was observed that treatment in 70% ethanol solution preserves the ordered layered structure of 2D mordenite because TEOT hydrolysis is slowed down. This, in turn, leads to higher mesoporosity after calcination due to anatase nanoparticles of about 4 nm preventing the collapse of the interlamellar space. Immobilization of TiO 2 on the zeolite surface is evidenced by the formation of Si-O-Ti bonds. The bandgap width of the synthetized nanocomposites was found to be sensitive to the hydrolysis medium.

KW - 2D цеолиты

KW - иерархическая пористость

KW - морденит

KW - TIO2

KW - TEOT

KW - тетраэтоксид титана

KW - 2D zeolite

KW - TEOT

KW - TiO2

KW - hierarchical porosity

KW - mordenite

KW - titanium tetraethoxide

UR - https://www.mendeley.com/catalogue/078fd171-4b41-3aa7-82c8-475c16c3a5be/

U2 - 10.3762/bjnano.16.12

DO - 10.3762/bjnano.16.12

M3 - Article

C2 - 39968167

VL - 16

SP - 128

EP - 140

JO - Beilstein Journal of Nanotechnology

JF - Beilstein Journal of Nanotechnology

SN - 2190-4286

ER -