Yang Miao-Miao, Cao Jia-Min, Qi Guang-Dong, Shen Xian-Yu, Yan Guan-Yu, Wang Ye, Dong Wen-Wen, Zhao Jun, Li Dong-Sheng, Zhang Qichun
College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, China.
Hubei Three Gorges Laboratory, Yichang, Hubei 443007, China.
Inorg Chem. 2023 Oct 2;62(39):15963-15970. doi: 10.1021/acs.inorgchem.3c02026. Epub 2023 Sep 19.
Solar-driven high-efficiency conversion of CO with water vapor into high-value-added alcohols is a promising approach for reducing CO emissions and achieving carbon neutrality. However, the rapid recombination of photogenerated carriers and low CO adsorption capacity of photocatalysts are usually the factors that limit their applicability. Herein, a series of low-cost Z-scheme heterostructures CuO/PCN-250- are constructed by growth of ultrasmall CuO nanoparticles on PCN-250. A systematic investigation revealed that there is a strong interaction between CuO nanoparticles and PCN-250. The resulting CuO/PCN-250-2 exhibits excellent photogenerated carrier separation efficiency and CO adsorption capacity, which dramatically promote the conversion of CO into alcohols. Notably, the total yield of 268 μmol g for the production of CHOH and CHHOH is superior to that of isolated PCN-250 and CuO. This study provides a new perspective for the design of a CuO nanoparticle/metal-organic framework Z-scheme heterojunction for the reduction of CO to alcohols with water vapor.
太阳能驱动一氧化碳与水蒸气高效转化为高附加值醇类是减少一氧化碳排放和实现碳中和的一种有前景的方法。然而，光生载流子的快速复合以及光催化剂对一氧化碳的低吸附能力通常是限制其应用的因素。在此，通过在PCN-250上生长超小的氧化铜纳米颗粒构建了一系列低成本的Z型异质结构CuO/PCN-250-。系统研究表明，氧化铜纳米颗粒与PCN-250之间存在强相互作用。所得的CuO/PCN-250-2表现出优异的光生载流子分离效率和一氧化碳吸附能力，极大地促进了一氧化碳向醇类的转化。值得注意的是，生成CHOH和CHHOH的总产率为268 μmol g，优于单独的PCN-250和CuO。本研究为设计用于将一氧化碳与水蒸气还原为醇类的氧化铜纳米颗粒/金属有机框架Z型异质结提供了新的视角。
