The synthesis of titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles involves specific production processes that are detailed in various scientific articles. TiO2 nanopowder production methods include sol-gel and hydrothermal techniques, while ZnO nanoparticles are often synthesized using methods like chemical vapor deposition and precipitation. Access to these detailed production processes typically requires journal subscriptions for full articles. Key resources for understanding these synthesis methods include publications from ACS and RSC. Understanding these processes is crucial for their application in fields such as catalysis, electronics, and environmental remediation.