Colloidal Template Synthesis of Nanomaterials by Using Microporous Organic Nanoparticles: The Case of C@MoS₂ Nanoadsorbents

The so-called colloidal template synthesis has been applied to the preparation of surface-engineered nanoadsorbents. Colloidal microporous organic network nanotemplates (C-MONs), which showed a high surface area (611 m² g⁻¹) and enhanced microporosity, were prepared through the networking of organic building blocks in the presence of poly(vinylpyrrolidone) (PVP). Owing to entrapment of the PVP in networks, the C-MONs showed good colloidal dispersion in EtOH. MoS₂ precursors were incorporated into the C-MONs and heat treatment afforded core–shell-type C@MoS₂ nanoparticles with a diameter of 80 nm, a negative zeta potential (−39.5 mV), a high surface area (508 m² g⁻¹), and excellent adsorption performance towards cationic dyes (q_max=343.6 and 421.9 mg g⁻¹ for methylene blue and rhodamine B, respectively).