@article{oai:tsukuba.repo.nii.ac.jp:00032043, author = {小林, 幹佳 and 足立, 泰久 and UENO, KENTO and KOBAYASHI, MOTOYOSHI and ADACHI, YASUHISA and KOJIMA, TAKASHI}, issue = {3S1}, journal = {Communications in physics}, month = {}, note = {Charging and stability of needle-like TiO2 nanoparticles were studied. Measured isoelectric point (IEP) was pH~4 and lower than that of spherical ones pH~6. Heat treatment at 400\r{}C changed the IEP from 4 to 6. The shift is probably due to shape controller (ethylenediamine). The particles aggregate around IEP and thus are charge-stabilized. Experimental hydrodynamic diameters of needle-like particles showed a reasonably good agreement with the theoretical diameter. That is, the particles can be dispersed to primary particles. 1pK Stern and standard electrokinetic models describe electrophoretic mobility of needle-like TiO2, indicating that double layer relaxation is significant for needle-like TiO2.}, pages = {13--21}, title = {Electric Charging and Colloid Stability of Fabricated Nedle-Like TiO2 Nanoparticles}, volume = {24}, year = {2014} }