| S型异质结光催化剂ZnFe2O4/WO3的构筑及光催化还原CO2性能 |
| Construction and photocatalytic CO2 reduction performance of S-scheme heterojunction ZnFe2O4/WO3 catalysts |
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| 摘要: 通过在WO3纳米片表面负载ZnFe2O4纳米颗粒，构建了一系列S型异质结光催化剂ZnFe2O4/WO3，并研究了其光催化CO2还原性能。在没有助催化剂和牺牲剂的条件下，所制备的ZnFe2O4/WO3复合材料可对CO2与水蒸汽进行光催化反应。优化后的材料光照5 h后CO2还原产物CO和CH4的产量分别为7.87和4.88 μmol·g-1。相对于单相组分，CO和CH4的产量明显提高。光催化活性的提高，归因于ZnFe2O4和WO3异质结的形成以及光生载流子的S型电荷传输模式。 |
| 关键词: CO2还原 光催化活性 ZnFe2O4/WO3 异质结 S型电荷传输模式 |
| 基金项目: 河南省自然科学基金(No.222300420526)资助。 |
| Abstract: A series of ZnFe2O4/WO3 photocatalysts were constructed by loading ZnFe2O4 nanoparticles on the surface of WO 3 nanosheets, and their performance for photocatalytic CO2 reduction was studied. Under the conditions of no cocatalysts and sacrificial agents, the prepared ZnFe2O4/WO3 composite materials can catalyze the reaction between CO2 and water vapor. After illumination for 5 h, the yields of CO2 reduction products CO and CH4 of the optimal material were 7.87 and 4.88 μmol·g-1, respectively. Compared to its counterparts, the yields of CO and CH4 were improved. The increased photocatalytic activity of ZnFe2O4/WO3 is attributed to the formation of heterojunctions between ZnFe2O4 and WO3 as well as the S-scheme charge transfer mode of the photogenerated carriers, both of which are conducive to separation efficiency of photo-generated carriers and photocatalytic CO2 reduction activity. |
| Keywords: CO2 reduction Photocatalytic activity ZnFe2O4/WO3 heterojunction S-scheme change transfer mode |
| 投稿时间：2023-10-11 修订日期：2023-12-14 |
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| 刘平,朱成才,李艳阳,要红昌.S型异质结光催化剂ZnFe2O4/WO3的构筑及光催化还原CO2性能[J].无机化学学报,2024,40(1):197-208. |
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