Controlling the chemical environment involves careful selection and manipulation of various parameters. In the laboratory, this can be achieved by adjusting the pH, temperature, and concentration of reactants. Surface modification techniques, such as coating nanoparticles with specific ligands or polymers, can also be used to tailor the chemical environment around nanomaterials. In practical applications, maintaining a controlled chemical environment may involve the use of buffers, stabilizers, or other additives to ensure consistent performance.