Influence of the synthesis route on sol–gel SiO2–TiO2 (1:1) xerogels and powders

Watermelon‐Like Structured SiOx–TiO2@C Nanocomposite as a High‐Performance Lithium‐Ion Battery Anode

“…The three bands at 1101, 807, and 471 cm −1 are assignable to Si–O–Si asymmetric stretching, symmetric stretching, and bending vibrations, respectively . There are two additional peaks located at 648 and 951 cm −1 for SiO x –TiO 2 @C sample, which are attributed to Ti–O–Ti and Si–O–Ti bond, respectively. The presence of Ti–O–Ti bond is in accord with the XRD result that TiO 2 phase is detected in SiO x –TiO 2 @C sample (Figure a).…”

Synthesis of tin oxide nanosized crystals embedded in silica matrix through sol–gel process using alkoxide precursors

“…The bands located at 470, 572 and 800 cm À1 are assigned to the SiAO bonds in the three dimensional SiO 2 network [27][28][29]. The bands closed to 1078, 1215 and 960 cm À1 correspond to bending and asymmetric stretching vibrations of SiAOASi and SiAOH [27][28][29][30]. The IR spectrum of SC90 sample exhibits the same bands at 470, 1078 and 1215 cm À1 associated to SiAOASi and SiAO bonds showing that a silica network is formed even though the Si content in this sample is as low as 10%.…”

Synthesis and characterization of silica–titania nanocomposite via a combination of sol–gel and mechanochemical process

“…[10]. For samples milled until 10 h, two obvious and independent transmittance peaks at 1100 and 1040 cm −1 have been recorded.…”