Electronic Supplementary Information

Twins in polyhedral 26-facet Cu7S4

Shaodong Sun, Dongchu Deng, Chuncai Kong, Xiaoping Song and Zhimao Yang*

cages: Synthesis, characterization and their

enhancing photochemical activities

School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter,

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, ShaanXi,

People’s Republic of China

* Corresponding author. E-mail: zmyang@mail.xjtu.edu.cn

Fig. S1. (a) FESEM image of the polyhedral 26-facet Cu2

O templates; (b) the corresponding XRD pattern.

Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2012

Fig. S2. (a) FESEM image of the polyhedral 26-facet Cu2O@Cu7S4

core/shell architectures obtained in anhydrous

ethanol reaction system; (b) the corresponding XRD pattern.

Fig.S3. FESEM image of the copper sulfide octahedral microcage with nanoplates building blocks.

Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2012

Fig. S4. (a) TEM image of an octahedral microcage; (b) High-magnification TEM image of the octahedral

microcage; (c) SAED pattern of the octahedral microcage; (d) HRTEM image of the nanotwinned structures of the

octahedral microcage.

Fig. S5. (a) FESEM image of the polyhedral 26-facet Cu2O@Cu7S4 core/shell architectures obtained in pure water

system; (b) the corresponding XRD pattern.

Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2012

Fig. S6 (a) Absorption spectra of a solution of MB solution in the presence of the Cu2O@Cu7S4 core/shell

architectures synthesized in anhydrous ethanol (EtOH) system; (b) Absorption spectra of a solution of MB solution

in the presence of the Cu2O@Cu7S4 core/shell architectures synthesized in pure water (H2O) system; (c) A plot of

the extent of photodegradation of MB by different catalysts under natural light, Panel I: the Cu2O@Cu7S4

core/shell architectures synthesized in anhydrous ethanol (EtOH) system, Panel II: the Cu2O@Cu7S4 core/shell

architectures synthesized in pure water (H2O) system.

Fig. S7 Absorption spectra of a solution of MB solution in the presence of the Cu7S4 cages synthesized in

anhydrous ethanol (EtOH) system without the aid of H2O2 molecules.

Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2012

Twins in polyhedral 26-facet CuR7RSR4R cages: Synthesis, characterization and their enhancing photochemical activitiesShaodong Sun, Dongchu Deng, Chuncai Kong, Xiaoping Song and Zhimao Yang*

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