Figure 1.

The scheme for constructing hollow octahedron by using Zn(OH)2 as template. Process I: Surface chemical conversion of Zn(OH)2 template with S2− [Step 1]. Cation exchange can be performed on the surface of Zn(OH)2/ZnS architectures, generating various Zn(OH)2/sulfide core/shell structures [Step 2]. A core removal results in various nanoscale sulfide cavities. Process II: Chemical deposition on Zn(OH)2 template [Step 1], following a core removal step [Step 2]

Wu et al. Nanoscale Research Letters 2010 5:1779-1787   doi:10.1007/s11671-010-9711-1