Can nanoparticles influence the pH of their environment?
Yes, nanoparticles can influence the pH of their environment. Certain nanoparticles, such as metal oxides, can act as catalysts and participate in chemical reactions that alter the pH. For example, titanium dioxide nanoparticles can generate reactive oxygen species under light, leading to changes in the acidity of the surrounding medium. This property is exploited in environmental remediation and photocatalysis.
