Retraction Note: Facile approach to prepare ZnO@SiO₂ nanomaterials for photocatalytic degradation of some organic pollutant models (Journal of Materials Science: Materials in Electronics, (2019), 30, 15, (14291-14299), 10.1007/s10854-019-01798-9)

The Editor in Chief has retracted this article due to irregularities in multiple figures in this article, specifically: In Fig. 1C the 1%, 5% and 10% appear to have identical noise and identical stretches of signal and the 20% and 17% curves appear to identical. Figure 2 is highly similar with with Fig. 2 from a previously published article [1] with shared authors. Figure 3F appears to overlap with Fig. 1C from a previously published article [1] with shared authors. Figure 4 appears to have an identical absorption spectra to one shown for a different particle from Fig. 3 of previously published article [2] with shared authors. Figure 8 is highly similar to Fig. 7 from a previously published article [2] with shared authors. The Editor in Chief has therefore lost confidence in the veracity of results presented in this article. Ahmed E. Shalan and Mohamed F. Sanad do not agree to the retraction. M. F. Abdel Messih and M. A. Ahmed have not responded to any correspondence from the editor about this retraction.