Abstract
Abstract Echinoid-like TiO2 particles were prepared via modified sol–gel process using PVA as a surface-directing agent in acetic acid solution. The surface of echinoid-like TiO2 particle is significantly rough, and the size of the particles is 800–1100 nm. The specific surface area and average pore size of echinoid-like TiO2 particles are 82.81 m2 g−1 and 11.79 nm, respectively. The photocatalytic activity of echinoid-like TiO2 particles was very high compared with P25 due to larger surface area.
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