| Autor: |
She, Ping, Guan, Buyuan, Sheng, Jiyao, Qi, Yuanyuan, Qiao, Guanyu, Rui, Hongbang, Lu, Geyu, Qin, Jun-Sheng, Rao, Heng |
| Zdroj: |
Catalysis Science & Technology; 2022, Vol. 12 Issue: 4 p1092-1099, 8p |
| Abstrakt: |
Photocatalytic carbon dioxide (CO2) reduction (PCR) into syngas is one of the sustainable approaches for recycling CO2into value-added chemical feedstocks. However, the PCR efficiency is often limited by the insufficient light-harvesting and poor charge separation. Herein, we design a spike-like double yolk–shell structured TiO2@ZnIn2S4(D-Y-TiO2@ZnIn2S4) photocatalyst with superior PCR efficiency. The unique design not only integrates advantages of increasing active sites, surface areas and light-harvesting capacity induced by the hierarchical morphology, but also facilitates photo-induced charge separation based on the heterojunction of TiO2and ZnIn2S4. Owing to the combination of structural and compositional merits, the optimized D-Y-TiO2@ZnIn2S4photocatalyst shows superior PCR performance (325.29 μmol CO per g; 227.18 μmol H2per g) under visible light. In addition, the ratio of CO/H2can be tuned from 0.03 to 1.43 by changing the sacrificial hole capture condition. This work provides a prospective way to obtain efficient PCR photocatalysts. |
| Databáze: |
Supplemental Index |
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