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<span class="CharOverride-26">In this work, an efficient photocatalyst based on </span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">-cyclodextrin-glycine-modified TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26"> nanoparticles (TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26">-Gly-</span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">CD NPs) was successfully synthesized. The photocatalytic activity of the prepared TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26">-Gly-</span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">CD was tested on the degradation of methylene blue (MB) and methyl orange (MO) dyes. The enhanced surface properties of TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26">-Gly-</span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">CD photocatalyst generated excellent photocatalytic performance for the photocatalytic degradation of dyes in aqueous solution. These were strongly attributed to the presence of the functional hydroxyl groups and the inner cores of the hydrophobic cavity in </span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">-CD to form inclusion complexes with organic molecules. As compared to the pure TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26"> and TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26"> modified by Gly, the dye degradation rate under UV irradiation was considerably enhanced by TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26">/Gly/</span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">CD as a photocatalyst. In addition, the sonocatalytic degradation of dyes was investigated, and it was found that the ultrasonic waves slightly enhanced the degradation time of dyes. The results indicated that the first-order kinetic model well describes the degradation of MB and MO dyes by TiO</span><span class="CharOverride-28">2</span><span class="CharOverride-26">-Gly-</span><span class="CharOverride-27" lang="ar-SA">β</span><span class="CharOverride-26">CD. Furthermore, the chemical oxygen demand (COD) values were determined for real industrial wastewater and treated wastewater.</span>