[email protected]₂ nanocomposites were prepared and tested for photocatalytic CO₂ conversion in the presence of H₂O. The characterizations showed that [email protected] [email protected] structures were formed. The photocatalytic activity of [email protected]_x-TiO₂ catalysts with different Ag content showed that the deposition of Ag shell could increase the photocatalytic CO₂ reduction efficiency and selectivity by suppressing H₂ generation. [email protected]_1.0-TiO₂ with an Ag content of 1.95 wt.‰ showed a maximum CH₄ formation rate of 160.3 μmol·g⁻¹·h⁻¹, together with a CO₂ reduction selectivity of 87.90%. PL spectra and photocurrent measurements indicated that [email protected]_1.0-TiO₂ had the highest photogenerated electron-hole separation efficiency among all the prepared photocatalysts.

制备[受电子邮件保护的] _2种纳米复合材料，并在H ₂ O存在下测试其光催化CO ₂转化。特征表明，形成了[受电子邮件保护的] [受电子邮件保护的]结构。具有不同Ag含量的[电子邮件保护] _x -TiO ₂催化剂的光催化活性表明，Ag壳的沉积可以通过抑制H _2的产生来提高光催化CO _2的还原效率和选择性。[受电子邮件保护] Ag含量为1.95 wt。‰的_1.0 -TiO ₂的最大CH ₄形成速率为160.3μmol·g ^-1 ·h^-1以及87.90％的CO ₂还原选择性。PL光谱和光电流测量表明，在所有制备的光催化剂中，[受电子邮件保护的] _1.0 -TiO ₂具有最高的光生电子-空穴分离效率。