| 摘要: |
| 采用简单的溶剂热法制备了厚度约为1.16nm单层超薄FeS纳米片，其具有涵盖从近紫外至近红外的太阳光谱波段的优异光学吸收性能和干净均一的表面，显微图像显示其具有超薄的片状结构，晶面结构清晰，物相测定证实合成的超薄FeS纳米片为单硫铁矿相，物性测定及理论计算显示超薄FeS纳米片具有半导体的电子能带结构，电子迁移率高，全光谱光催化CO2 还原到CO的产率约为260 μmol g-1 h-1，且具有很好的光催化稳定性，该研究为地球储量丰富的铁基材料应用于能源转化领域提供了可行的方向。 |
| 关键词: FeS纳米片，溶剂热，光催化，CO[sub_s]2[sub_e]还原 |
| DOI： |
| 投稿时间：2020-09-23修订日期：2020-09-23 |
| 基金项目: |
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| PACS：28.52.Fa, 77.55.hf, 84.60.Jt, 87.85.Qr |
|
Zhao He, Zeng Linghui, Xu Xiaoliang
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| (University of Science and Technology of China) |
| Abstract: |
| A simple solvothermal method was used to prepare a single-layer ultra-thin FeS nanosheet with a thickness of about 1.16nm. It has a clean and uniform surface and excellent optical absorption performance covering the solar spectrum from near ultraviolet to near infrared. The microscopic image shows that it has ultra-thin sheet structure as well as a clear crystal plane structure. Phase measurement confirmed that the synthesized ultra-thin FeS nanosheets are troilite structure. Then physical property measurement and theoretical calculations show that ultra-thin FeS nanosheets have a semiconductor electronic band structure, whose electrons have high mobility. The yield of photocatalytic reduction of CO2 is about 260μmol g-1 h-1, and it has good photocatalytic stability. This research provides a feasible direction for the application of the earth''s abundant iron-based materials in the field of energy conversion. |
| Key words: FeS nanosheets, solvothermal, photocatalysis, CO2 reduction |