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Black ZrO2 synthesized by molten lithium reduction strategy for photocatalytic hydrogen generation
Journal of the American Ceramic Society ( IF 3.9 ) Pub Date : 2020-03-06 , DOI: 10.1111/jace.17093
Di Zu 1, 2, 3 , Haiyang Wang 1 , Tianzi Yang 1 , Hehe Wei 1 , Shuqing Sun 2, 3 , Hui Wu 1
Affiliation  

To promote the performance of metal oxides, introducing oxygen vacancies is an effective strategy. Oxygen vacancies can tailor the atomic arrangement and band structure, thus optimizing the physical and chemical properties of metal oxides. Herein, we prepared oxygen‐deficient black ZrO2 nanoparticles via molten lithium (Li) reduction. Massive oxygen vacancies were introduced into ZrO2 nanoparticles as well as defective disorder domains formed in ZrO2 lattice during the molten lithium treatment process. Benefitting from the defective structure, black ZrO2 with enhanced light absorption demonstrated increased photocatalytic hydrogen generation rate, which was ~5 times higher than that of pristine ZrO2. Moreover, molten lithium reduction provides a powerful way to not only implant oxygen vacancies to metal oxides but also extend their applications.

中文翻译:

熔融锂还原策略合成黑ZrO2用于光催化制氢

为了提高金属氧化物的性能,引入氧空位是一种有效的策略。氧空位可以调整原子排列和能带结构,从而优化金属氧化物的物理和化学性质。本文中,我们通过熔融锂(Li)还原制备了缺氧的黑色ZrO 2纳米颗粒。在熔融锂处理过程中,将大量的氧空位以及ZrO 2晶格中形成的缺陷无序域引入ZrO 2纳米粒子中。得益于缺陷的结构,光吸收增强的黑色ZrO 2表现出更高的光催化氢生成速率,比原始ZrO 2高约5倍。。此外,熔融锂还原提供了一种强大的方式,不仅可以将氧空位注入金属氧化物中,还可以扩展其应用范围。
更新日期:2020-03-06
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