Interfacial-charge-transfer-induced photochromism of MoO3@TiO2 crystalline-core amorphous-shell nanorods
文献类型：期刊论文
| 作者 | Li, Ning1,4; Li, Yamei2; Zhou, Yijie1; Li, Wenjing1; Ji, Shidong1; Yao, Heliang1; Cao, Xun1; Jin, Ping1,3 |
| 刊名 | SOLAR ENERGY MATERIALS AND SOLAR CELLS
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 160页码:116-125 |
| 关键词 | MoO3@TiO2 Core-shell Photochromic Heterojunction Interfacial charge transfer The anneal treatment |
| 英文摘要 | Materials with excellent photochromic (PC) characteristics are promising to be applied in energy-saving smart windows, however little progress was achieved in the past decade. Herein we propose a heterojunction strategy based on a MoO3@TiO2 (MT) core/shell nanorods system to obtain remarkably enhanced photochromic property. MT core/shell nanorods have a crystalline MoO3 core with a chemically bonded amorphous TiO2 shell. They were synthesized by a scalable water-bath method and characterized by using x-ray diffraction (XRD), transmission electron microscopy, Raman spectroscopy, x-ray photoelectron spectroscopy (XPS), electron energy loss spectrum (EELS) and ultraviolet-visible spectrophotometry. The MT photochromic response extends from the visible to the infrared and depends on the transmittance of the MT core/shell nanorods. The photochromic optical modulation of MT core/shell nanorods is faster and more efficient than that of MoO3 nanorods, derived from remarkable structural and chemical changes, as revealed by XRD and Raman spectroscopy. XPS analysis combined with EELS probing on a single rod indicates that the photochromic-enhancement mechanism is highly correlated to the charge transfer between Ti and Mo species, especially across the MoO3/TiO2 interface. Oxidation of Ti3+ occurs simultaneously with the PC reductive transition of the Mo center, which indicates that Ti3+ plays an important role either as electron source or by favoring electron transfer by charge rectification through hole scavenging. The significant role of Ti3+ is further confirmed by annealing the material in air, which quenches the Ti3+ defects and thereby reduces PC enhancement to negligible levels compared with the unannealed samples. By controlling the shell defect state rather than only considering the bulk band structure, this work provides a new paradigm for modulating photo-driven charge transfer across core/shell heterojunctions. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Energy & Fuels ; Materials Science ; Physics |
| 关键词[WOS] | OPTICAL-PROPERTIES ; THIN-FILMS ; PHOTOCATALYTIC PROPERTIES ; ELECTROCHROMIC MATERIALS ; GREEN SYNTHESIS ; WO3 FILMS ; OXIDES ; HETEROJUNCTIONS ; COMPOSITE ; OXYGEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000390072700016 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/21922]  |
| 专题 | 上海硅酸盐研究所_古陶瓷与工业陶瓷工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Dingxi 1295, Shanghai 200050, Peoples R China 2.RIKEN, Biofunct Catalyst Res Team, 2-1 Hirosawa, Wako, Saitama 3510198, Japan 3.Natl Inst Adv Ind Sci & Technol, Nagoya, Aichi 4638560, Japan 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ning,Li, Yamei,Zhou, Yijie,et al. Interfacial-charge-transfer-induced photochromism of MoO3@TiO2 crystalline-core amorphous-shell nanorods[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2017,160:116-125. |
| APA | Li, Ning.,Li, Yamei.,Zhou, Yijie.,Li, Wenjing.,Ji, Shidong.,...&Jin, Ping.(2017).Interfacial-charge-transfer-induced photochromism of MoO3@TiO2 crystalline-core amorphous-shell nanorods.SOLAR ENERGY MATERIALS AND SOLAR CELLS,160,116-125. |
| MLA | Li, Ning,et al."Interfacial-charge-transfer-induced photochromism of MoO3@TiO2 crystalline-core amorphous-shell nanorods".SOLAR ENERGY MATERIALS AND SOLAR CELLS 160(2017):116-125. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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