Flatband λ-Ti3O5 towards extraordinary solar steam generation
文献类型：期刊论文
| 作者 | Yang, Bo2; Zhang, Zhiming2; Liu, Peitao1; Fu, Xiankai2; Wang, Jiantao1; Cao, Yu1; Tang, Ruolan2; Du, Xiran2; Chen, Wanqi2; Li, Song2 |
| 刊名 | NATURE
 |
| 出版日期 | 2023-09-13 |
| 页码 | 17 |
| ISSN号 | 0028-0836 |
| DOI | 10.1038/s41586-023-06509-3 |
| 通讯作者 | Zuo, Liang(lzuo@mail.neu.edu.cn) |
| 英文摘要 | Solar steam interfacial evaporation represents a promising strategy for seawater desalination and wastewater purification owing to its environmentally friendly character(1-3). To improve the solar-to-steam generation, most previous efforts have focused on effectively harvesting solar energy over the full solar spectrum(4-7). However, the importance of tuning joint densities of states in enhancing solar absorption of photothermal materials is less emphasized. Here we propose a route to greatly elevate joint densities of states by introducing a flat-band electronic structure. Our study reveals that metallic lambda-Ti3O5 powders show a high solar absorptivity of 96.4% due to Ti-Ti dimer-induced flat bands around the Fermi level. By incorporating them into three-dimensional porous hydrogel-based evaporators with a conical cavity, an unprecedentedly high evaporation rate of roughly 6.09 kilograms per square metre per hour is achieved for 3.5 weight percent saline water under 1 sun of irradiation without salt precipitation. Fundamentally, the Ti-Ti dimers and U-shaped groove structure exposed on the lambda-Ti3O5 surface facilitate the dissociation of adsorbed water molecules and benefit the interfacial water evaporation in the form of small clusters. The present work highlights the crucial roles of Ti-Ti dimer-induced flat bands in enchaining solar absorption and peculiar U-shaped grooves in promoting water dissociation, offering insights into access to cost-effective solar-to-steam generation. |
| 资助项目 | We are grateful to N. Wang and H. L. Qu at Analytical and Testing Center, Northeastern University, for the photoluminescence measurements and to Y. N. Jiang at Analytical and Testing Center, Institute of Metal Research, Chinese Academy of Sciences for the[BP0719037] ; Program of Introducing Talents of Discipline Innovation |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001078664900009 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | We are grateful to N. Wang and H. L. Qu at Analytical and Testing Center, Northeastern University, for the photoluminescence measurements and to Y. N. Jiang at Analytical and Testing Center, Institute of Metal Research, Chinese Academy of Sciences for the ; Program of Introducing Talents of Discipline Innovation |
| 源URL | [http://ir.imr.ac.cn/handle/321006/179482]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zuo, Liang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Bo,Zhang, Zhiming,Liu, Peitao,et al. Flatband λ-Ti3O5 towards extraordinary solar steam generation[J]. NATURE,2023:17. |
| APA | Yang, Bo.,Zhang, Zhiming.,Liu, Peitao.,Fu, Xiankai.,Wang, Jiantao.,...&Zuo, Liang.(2023).Flatband λ-Ti3O5 towards extraordinary solar steam generation.NATURE,17. |
| MLA | Yang, Bo,et al."Flatband λ-Ti3O5 towards extraordinary solar steam generation".NATURE (2023):17. |
入库方式： OAI收割
来源：金属研究所
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