IMR OpenIR
Oxygen defect engineering by the current effect assisted with temperature cycling in a perovskite-type La0.7Sr0.3CoO3 film
Li, J.; Wang, J.; Kuang, H.; Zhang, H. R.; Zhao, Y. Y.; Qiao, K. M.; Wang, F.; Liu, W.; Wang, W.; Peng, L. C.; Zhang, Y.; Yu, R. C.; Hu, F. X.; Sun, J. R.; Shen, B. G.; Wang, J; Hu, FX (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.; Hu, FX (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.; Hu, FX (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.
2017-09-21
发表期刊ROYAL SOC CHEMISTRY
ISSN2040-3364
卷号9期号:35页码:13214-13221
摘要Introducing and modulating the oxygen deficiency concentration have been received as an effective way to obtain high catalytic activity in perovskite oxides. However, it is difficult to control the oxygen vacancy in conventional oxygen defect engineering due to harsh reaction conditions at elevated temperatures and the reducing atmosphere, which make it impractical for many technological applications. Herein, we report a new approach to oxygen defect engineering based on the combination of the current effect and temperature cycling at low temperature. Our investigations revealed that the electrical conductivity of the (011)-La0.7Sr0.3CoO3/PMN-PT film changes continuously from metallicity to insulativity under repeated transport measurements below room temperature, which indicates the transformation of the Co4+ state to Co3+ in the film. Further experiments and analysis revealed that oxygen vacancies can be well regulated by the combined current effect and temperature cycling in repeated measurements, which results in a decrease of Co4+/Co3+ and thus the remarkable variation of conductive properties of the film. Our work provides a simple and highly efficient method to engineer oxygen vacancies in perovskite-type oxides and brings new opportunities in designing high-efficiency oxidation catalysts.; Introducing and modulating the oxygen deficiency concentration have been received as an effective way to obtain high catalytic activity in perovskite oxides. However, it is difficult to control the oxygen vacancy in conventional oxygen defect engineering due to harsh reaction conditions at elevated temperatures and the reducing atmosphere, which make it impractical for many technological applications. Herein, we report a new approach to oxygen defect engineering based on the combination of the current effect and temperature cycling at low temperature. Our investigations revealed that the electrical conductivity of the (011)-La0.7Sr0.3CoO3/PMN-PT film changes continuously from metallicity to insulativity under repeated transport measurements below room temperature, which indicates the transformation of the Co4+ state to Co3+ in the film. Further experiments and analysis revealed that oxygen vacancies can be well regulated by the combined current effect and temperature cycling in repeated measurements, which results in a decrease of Co4+/Co3+ and thus the remarkable variation of conductive properties of the film. Our work provides a simple and highly efficient method to engineer oxygen vacancies in perovskite-type oxides and brings new opportunities in designing high-efficiency oxidation catalysts.
部门归属[li, j. ; wang, j. ; kuang, h. ; zhang, h. r. ; zhao, y. y. ; qiao, k. m. ; wang, w. ; peng, l. c. ; zhang, y. ; yu, r. c. ; hu, f. x. ; sun, j. r. ; shen, b. g.] chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100190, peoples r china ; [li, j. ; wang, j. ; kuang, h. ; zhang, h. r. ; zhao, y. y. ; qiao, k. m. ; wang, w. ; peng, l. c. ; zhang, y. ; yu, r. c. ; hu, f. x. ; sun, j. r. ; shen, b. g.] chinese acad sci, inst phys, state key lab magnetism, beijing 100190, peoples r china ; [li, j. ; wang, j. ; kuang, h. ; zhang, h. r. ; zhao, y. y. ; qiao, k. m. ; wang, w. ; peng, l. c. ; zhang, y. ; yu, r. c. ; hu, f. x. ; sun, j. r. ; shen, b. g.] univ chinese acad sci, sch phys sci, beijing 100049, peoples r china ; [wang, f. ; liu, w.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
学科领域Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
资助者National Key Research and Development Program of China [2017YFA0303601, 2017YFB0702702, 2014CB643700, 2016YFB0700903, 2016YFA0300701]; National Natural Sciences Foundation of China [11474341, 51531008, 11674378, 51590880]; Key Program and Strategic Priority Research Program of the Chinese cademy of Sciences
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79089
专题中国科学院金属研究所
通讯作者Wang, J; Hu, FX (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.; Hu, FX (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.; Hu, FX (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.
推荐引用方式
GB/T 7714
Li, J.,Wang, J.,Kuang, H.,et al. Oxygen defect engineering by the current effect assisted with temperature cycling in a perovskite-type La0.7Sr0.3CoO3 film[J]. ROYAL SOC CHEMISTRY,2017,9(35):13214-13221.
APA Li, J..,Wang, J..,Kuang, H..,Zhang, H. R..,Zhao, Y. Y..,...&Hu, FX .(2017).Oxygen defect engineering by the current effect assisted with temperature cycling in a perovskite-type La0.7Sr0.3CoO3 film.ROYAL SOC CHEMISTRY,9(35),13214-13221.
MLA Li, J.,et al."Oxygen defect engineering by the current effect assisted with temperature cycling in a perovskite-type La0.7Sr0.3CoO3 film".ROYAL SOC CHEMISTRY 9.35(2017):13214-13221.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, J.]的文章
[Wang, J.]的文章
[Kuang, H.]的文章
百度学术
百度学术中相似的文章
[Li, J.]的文章
[Wang, J.]的文章
[Kuang, H.]的文章
必应学术
必应学术中相似的文章
[Li, J.]的文章
[Wang, J.]的文章
[Kuang, H.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。