Text this: RETRACTED: Saied et al. Mycosynthesis of Hematite (α-Fe<sub>2</sub>O<sub>3</sub>) Nanoparticles Using <i>Aspergillus niger</i> and Their Antimicrobial and Photocatalytic Activities. <i>Bioengineering</i> 2022, <i>9</i>, 397