A strategy of coupling a photocatalyst with a high CO₂ adsorption capacity material was proposed in order to integrate CO₂ capture and photoreduction processes into a single system. TiO₂ and ZIF-8 were selected for their high photoactivity and CO₂ adsorption capacity respectively. We employed a facile in-situ growth strategy to inlay ZIF-8 into the TiO₂ film grid. X-ray diffraction and scanning electron microscopy revealed that ZIF-8 was successfully prepared and inlaid into the TiO₂ film. X-ray photoelectron spectroscopy and photoluminescence spectra suggested that the TiO₂ and ZIF-8 were coupled by chemical bonding. The ZIF-8 decorated TiO₂ film exhibited excellent CO₂ capture capacity and showed remarkably enhanced yield for reducing CO₂ to CO and CH₄ when compared with pure TiO₂ film. The probable mechanism of the photoreduction process is also discussed.

为了将CO _2的捕获和光还原过程整合到一个单一的系统中，提出了一种将光催化剂与高CO ₂吸附能力的材料偶联的策略。分别选择TiO ₂和ZIF-8具有高光活性和CO ₂吸附能力。我们采用了一种简便的原位生长策略，将ZIF-8嵌入TiO ₂薄膜网格中。X射线衍射和扫描电镜观察表明，成功制备了ZIF-8并嵌入到TiO ₂膜中。X射线光电子能谱和光致发光光谱表明，TiO ₂ZIF-8和ZIF-8通过化学键结合。与纯TiO ₂膜相比，ZIF-8装饰的TiO ₂膜表现出出色的CO ₂捕获能力，并显着提高了将CO ₂还原为CO和CH _4的产率。还讨论了光还原过程的可能机理。