Enhanced Visible Light Photocatalytic Activity for TiO2 Nanotube Array Films by Codoping with Tungsten and Nitrogen

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td align="left">Sample</td><td align="center">N-TiO2</td><td align="center">W-N-TiO2-0.01</td><td align="center">W-N-TiO2-0.05</td><td align="center">W-N-TiO2-0.5</td><td align="center">W-N-TiO2-1</td><td align="center">W-N-TiO2-3</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td align="left">W/Ti</td><td align="center">0</td><td align="center">0.11</td><td align="center">0.11</td><td align="center">0.12</td><td align="center">0.16</td><td align="center">0.12</td></tr><tr><td align="left">N/Ti</td><td align="center">0.02</td><td align="center">0.13</td><td align="center">0.16</td><td align="center">0.19</td><td align="center">0.22</td><td align="center">0.14</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

W/Ti and N/Ti ratio of W-N-TiO2-X samples determined by XPS analysis.

International Journal of Photoenergy

tab1

Table 1

Table 1: Enhanced Visible Light Photocatalytic Activity for TiO2 Nanotube Array Films by Codoping with Tungsten and Nitrogen