Electronic Supplementary Information

Unique polyhedral 26-facet CuS hollow architectures decorated with

nanotwinned, mesostructural and single crystalline shells

Shaodong Sun, Xiaoping Song, Chuncai Kong, Shuhua Liang,* Bingjun Ding and Zhimao Yang*

* Address correspondence to liangsh@xaut.edu.cn and zmyang@mail.xjtu.edu.cn.

Fig. S1 (a) FESEM image of the polyhedral 26-facet Cu2O templates. (b) XRD pattern of the polyhedral 26-facet

Cu2O templates.

Fig. S2 FESEM image of the polyhedral 26-facet Cu2O@CuS core/shell architectures. (a) Low magnification. (b)

Individual particle.

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Fig. S3 (a) The Inverse Fourier transform of the HRTEM images taken from the areas marked with red squares in

Fig. 4c. (b) The corresponding FFT image of section II in Fig. S3a. (c) The corresponding FFT image of section I

in Fig. S3a.

Fig. S4 FE-SEM images of the products harvested after different reaction time. (a) and (b) 3 min. (c) and (d) 10

min.

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Fig. S5 (a) High-magnification TEM image of the square shell of the products obtained at 3 min. (b) SAED pattern

of the square shell of the products obtained at 3 min. (c) Low-magnification HRTEM image of the nanoplates

building blocks. (d) High-magnification HRTEM image of the nanoplates building blocks. (e) FFT image of the of

the HRTEM image taken from the areas marked with red squares in Fig. S5d.

Fig. S6 (a) High-magnification TEM image of the triangular shell of the products obtained at 3 min. (b) SAED

pattern of the triangular shell of the products obtained at 3 min.

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Fig. S7 (a) High-magnification TEM image of the rectangular shell of the products obtained at 3 min. (b) SAED

pattern of the rectangular shell of the products obtained at 3 min. (c) The corresponding HRTEM image. (d) FFT

image of the of the HRTEM image taken from the areas marked with red squares in Fig. S7c.

Fig. S8 (a) High-magnification TEM image of the square shell of the products obtained at 10 min. (b) SAED

pattern of the square shell of the products obtained at 10 min. (c) The corresponding HRTEM image.

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Fig. S9 (a) High-magnification TEM image of the triangular shell of the products obtained at 10 min. (b) SAED

pattern of the triangular shell of the products obtained at 10 min. (c) The corresponding HRTEM image.

Fig. S10 (a) High-magnification TEM image of the rectangular shell of the products obtained at 10 min. (b) SAED

pattern of the rectangular shell of the products obtained at 10 min. (c) The corresponding HRTEM image.

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Fig. S11 The crystallographic structures of {110} (a), {111} (b) and {100} (c and d) facets of Cu2O crystal.

Fig. S12 A schematic illustration of the proposed CuS cage formation mechanism and reaction pathways.

Electronic Supplementary Material (ESI) for CrystEngCommThis journal is © The Royal Society of Chemistry 2011