editor,<br /><br />I have a question in your edited sentence below.<br /><br />"The polymer molecules of TMDS being occupied in silica sand prevents steric stabilization of colloidal ZnO, reducing dispersion forces among ZnO NPs."<br /><br />Here the subject is "The polymer modecules" which is plural, then verb should be "prevent" not "prevents"<br /><br />Can you please confirm this?<br /><br />