TY - JOUR AU - Kustiningsih, I. AU - Sutinah, AU - Stefirizky, M. AU - Slamet, AU - Purwanto, W. W. PY - 2018/09/30 Y2 - 2024/03/28 TI - Optimization of TiO2 nanowires synthesis using hydrothermal method for hydrogen production JF - Journal of Mechanical Engineering and Sciences JA - J. Mech. Eng. Sci. VL - 12 IS - 3 SE - Article DO - 10.15282/jmes.12.3.2018.9.0340 UR - https://journal.ump.edu.my/jmes/article/view/563 SP - 3876 - 3887 AB - <div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p>Effects of sonication and hydrothermal treatment time on TiO2 nanowires (TNWs) formation have been investigated. Sonication of TiO2 P25 sol was performed using sonicator water bath Cole for 0.5, 1 and 2 hours followed by hydrothermal treatment. The hydrothermal treatment was carried out in a teflon lined stainless steel autoclave for 12, 15 and 24 hours. The samples were characterized by means of Scanning Electron Microscope (SEM), X-ray powder diffractometer (XRD), UV-vis diffuse and reflectance spectroscopy (UV-vis DRS). The specific surface area of each sample was determined by the BET nitrogen gas adsorption/desorption method. The photocatalytic activity of TNWs was evaluated with photocatalytic H2 evolution from aqueous methanol solution. The result showed that the best TNWs was obtained at 1 hr sonication followed by hydrothermal process for 12 hours. By using this catalyst hydrogen production reached 82 μmol after 5h while using TiO2 P25 could only reach 23 μmol.</p></div></div></div> ER -