Applied Catalysis B: Environment and Energy ( IF 20.2 ) Pub Date : 2017-11-07 , DOI: 10.1016/j.apcatb.2017.11.011 Haoyang Jiang , Ken-ichi Katsumata , Jeongsoo Hong , Akira Yamaguchi , Kazuya Nakata , Chiaki Terashima , Nobuhiro Matsushita , Masahiro Miyauchi , Akira Fujishima
A series of Cu2O-loaded Zn-Cr layered double hydroxides (LDHs) was prepared via an in situ reduction process from Cu-Zn-Cr ternary LDHs and applied to the photoreduction of CO2. The formation of Cu2O nanoparticles and the preservation of the LDH structure was confirmed by X-ray diffraction and transmission electron microscopy. Among the loaded LDHs, the 0.1Cu2[email protected]1.8Cr LDH exhibited optimal activity for the conversion of CO2 into CO in pure water and was superior to both the corresponding Cu-Zn-Cr ternary LDH and pristine Zn2Cr LDHs. In addition, the production of CO was further promoted by increasing the solubility of CO2 using a nano-bubble solution instead of pure water. The loaded Cu2O nanoparticles probably function as effective electron traps, promoting charge separation and providing active sites for CO2 reduction.
中文翻译:
负载Cu 2 O的Zn-Cr层状双氢氧化物对CO 2的光催化还原
通过原位还原法从Cu-Zn-Cr三元LDHs中制备了一系列负载Cu 2 O的Zn-Cr层状双氢氧化物(LDHs),并将其用于CO 2的光还原。X射线衍射和透射电子显微镜证实了Cu 2 O纳米颗粒的形成和LDH结构的保留。在负载的LDH中,0.1Cu 2 [受电子邮件保护] 1.8 Cr LDH在纯水中将CO 2转化为CO表现出最佳活性,并且优于相应的Cu-Zn-Cr三元LDH和原始Zn 2Cr LDHs。另外,通过使用纳米气泡溶液代替纯水增加CO 2的溶解度,进一步促进了CO的产生。负载的Cu 2 O纳米颗粒可能起到有效的电子陷阱的作用,促进电荷分离并提供还原CO 2的活性位。