Controllable Synthesis of Silica Hollow Spheres by Vesicle Templating of Silicone Surfactants

Supplementary materials

Controllable Synthesis of Silica Hollow Spheres by Vesicle Templating of Silicone Surfactants

Bo Sun,a Caiyun Guo,b Yuan Yao,aZhehao Huangaand Shunai Chea,*

aSchool of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, ShanghaiJiaoTongUniversity, 800 Dongchuan Road, Shanghai, 200240 (P. R. China).

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b Petrochina Jilin Petrochemical Company Research Institute, 27 Zunyi East RoadLongtan District, Jilin, 132021 (P. R. China)

Fig. S1 High magnification SEM images of the SHSs synthesized by route I with different PSEP concentration. The synthetic mass composition was PSEP:H2O:TEOS=1:x:2.08, where x=32 (A), 48 (B), 96 (C) and 180 (D). The scale bars are 200 nm.

Table S1 Morphological information of the SHSs synthesized through routeI, II and III.

[a]:The size and the wall thicknesses of the spheres were calculated on average by counting 80-100 particles.

[b] The diameter of the cavity was calculated with the diameter of sphere minus double shell thickness.

[c]: TEOS-1 that mixed with the PSEP was tuned in route III.

Fig. S2 SEM images of the SHSs synthesized by route II with different PSEP concentration. The synthetic mass composition was PSEP:H2O:TEOS=1:x:2.08, where x= 48 (A), 64 (B), 128 (C) and 240 (D).

Table S2Structural properties of the calcined SHSs synthesized through routeI, II and III.a

a Notation:SBET, BET specific surface area; Vp, pore volume calculated on the basis of the N2desorption isotherm curves by the BJH method; d, BJH pore diameter calculated on the basis of the N2desorption isotherm curves.

Fig. S3 HR-TEM image of the calcined sample SHSs-R1-1.

Fig.S4The observed Tyndall effect for the samples synthesized through routes I, II and III.

Table S3DLS data of the samples synthesized through routesI, II and III.

Fig.S5DLS plots of the vesicle templates according to the samples synthesized through route I.

Table S4DLS data of thevesicle templates according to the samples synthesized through route I.