2D and 3D nano/microstructures of 4ZnO center dot B2O3 center dot H2O with different morphologies have been successfully synthesized by a hydrothermal route in the presence of surfactant polyethylene glycol-300 (PEG-300). Lamellar-like nanoparticles and microsphere organizations of nano and microrods are fabricated by varying the reaction conditions. The products have been characterized by XRD. Fr-IR, TG-DTA and SEM. The XRD data indicate the as-prepared samples present at pure phase 4ZnO center dot B2O3 center dot H2O with monoclinic symmetry. The SEM results reveal that the lamellar-like particles are about 30 nm in thickness and around several hundred nanometers in diameter. The microsphere organizations have different diameters, and the secondary structures are made from rod-like particles with different size and mode, respectively. The morphologies of products strongly depend on surfactant, hydrothermal temperature and time. (C) 2008 Elsevier B.V. All rights reserved.