strong synergistic effect of the (110) and (100) facets of the SrTiO3 perovskite micro/nanocrystal: decreasing the binding energy of exciton and superb photooxidation capability for Co2+
文献类型：期刊论文
| 作者 | Jia, Qibo2; Wang, Chuyu1,2; Liu, Jian1,2; Cai, Xiaojiao2; Zhong, Li2; Yu, Gangqiang3; Duan, Dongping1,2 |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2022-08-30 |
| 页码 | 10 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/d2nr02977d |
| 英文摘要 | Crystal facet regulation is an effective method for preparing SrTiO3 or other perovskite semiconductor materials with high photochemical catalysis performance. In general, the edge-truncated cube of SrTiO3 micro-nano particles has been widely reported because of the multiple crystal facets exposed at the same time. However, the effect of the (110) facet and the interaction between the (100) and (110) facets on the properties of photo-induced carriers is still not very clear. In this article, we have designed and prepared two edge-truncated cube SrTiO3-a small and large area proportion of the (110) facet, respectively. In addition to the morphological and structural characterization, high-resolution XPS and femtosecond multiphoton transient absorption (fs-TA) spectroscopy were used to detect the atomic vacancy and were applied to confirm the state of carrier transition. The results showed that the larger (110) facet led to two influences-more Sr vacancies and more self-trapping excitons (STEs) with an ultra-low binding energy (E-b = 2.13 meV), about 1.17 meV lower than that of the sample with the smaller (110) facet. In particular, the larger (110) facet also caused a much higher photooxidation performance for Co2+ to Co3+. This study not only enriches the arsenal of SrTiO3 materials but also sheds new insights into the understanding of the synergistic effect essence of the (100) and (110) facets, which could promote the development of new perovskite photocatalytic materials, particularly in the recovery of heavy metals. |
| WOS关键词 | SURFACE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000847483900001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54582]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Duan, Dongping |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Qibo,Wang, Chuyu,Liu, Jian,et al. strong synergistic effect of the (110) and (100) facets of the SrTiO3 perovskite micro/nanocrystal: decreasing the binding energy of exciton and superb photooxidation capability for Co2+[J]. NANOSCALE,2022:10. |
| APA | Jia, Qibo.,Wang, Chuyu.,Liu, Jian.,Cai, Xiaojiao.,Zhong, Li.,...&Duan, Dongping.(2022).strong synergistic effect of the (110) and (100) facets of the SrTiO3 perovskite micro/nanocrystal: decreasing the binding energy of exciton and superb photooxidation capability for Co2+.NANOSCALE,10. |
| MLA | Jia, Qibo,et al."strong synergistic effect of the (110) and (100) facets of the SrTiO3 perovskite micro/nanocrystal: decreasing the binding energy of exciton and superb photooxidation capability for Co2+".NANOSCALE (2022):10. |
入库方式： OAI收割
来源：过程工程研究所
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