Morphology engineering of type-II heterojunction nanoarrays for improved sonophotocatalytic capability.
Morphology engineering of type-II heterojunction nanoarrays for improved sonophotocatalytic capability.
复制标题
用于提高声光催化能力的 II 型异质结纳米阵列的形态工程
DOI：
10.1016/j.ultsonch.2021.105849
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发表时间：
2021-12
影响因子：
8.4
通讯作者：
Ma J
中科院分区：
文献类型：
--
作者：
Guo L;Chen Y;Ren Z;Li X;Zhang Q;Wu J;Li Y;Liu W;Li P;Fu Y;Ma J
成功地合成了具有II型异质结的纳米结构的氧化锌/硫化锌。异质结纳米管比纳米棒表现出更好的声光催化性能。通过实验和模拟研究了形貌对压电体性能的影响。形态工程可以通过转动压电体来影响声光催化。声光催化是探索压电场与载流子相互作用的重要成果之一，在染料降解、水分解和杀菌等方面显示出潜在的应用前景。虽然已有多种异质结催化剂被应用于提高声光催化性能，但表面形貌对声光催化性能的重要性还没有得到重视。在本研究中，我们在不锈钢网状物上合成了刷状的氧化锌奈米棒阵列，并将其硫化成氧化锌/硫化锌核壳奈米棒阵列，以研究异质结的声光催化能力。通过硫化处理，超声光催化性能从25.1%提高到45.4%。然后，在不影响纳米颗粒壳层结构和分布的情况下，将纳米棒刻蚀到纳米管上，使其性能进一步提高到63.3%。电子自旋共振测试和数值模拟表明，这种改善可以归因于增强的压电场和减小的迁移距离的耦合作用，抑制了光激发的电子-空穴对的复合，同时将形貌从纳米棒转变为纳米管。本研究探索了一种新的提高异质结纳米阵列声光催化能力的形态工程方法。
ZnO/ZnS nanostructures with type-II heterojunction are successfully synthesized. Heterojunction nanotube exhibits better sonophotocatalysis than nanorod. Effect of morphology on piezoelectric is experimentally and simulatively studied. Morphology engineering can affect sonophotocatalysis through turning piezoelectric. Sonophotocatalysis is one of the most significant outcomes of the exploration of the interaction between piezoelectric field and charge carriers, which exhibits potential applications in dye degradation, water splitting, and sterilization. Although several heterojunction catalysts have been applied to improve the sonophotocatalytic capability, the importance of the morphology on the sonophotocatalytic capability has not been emphasized. In this study, brush-like ZnO nanorod arrays are synthesized on a stainless-steel mesh and subsequently vulcanized into ZnO/ZnS core–shell nanorod arrays to investigate the sonophotocatalytic capability of the heterojunction. The sonophotocatalytic capability increases from 25.1% to 45.4% through vulcanization. Afterward, the ZnO/ZnS nanorods are etched to ZnO/ZnS nanotubes without affecting the crystallography and distribution of the ZnS nanoparticle shell, further improving the capability to 63.3%. The improvement can be ascribed to the coupling effect of the enhanced piezoelectric field and the reduced migration distance, which suppresses the recombination of photoexcited electron–hole pairs while transforming the morphology from nanorod to nanotube, as proven by the electron spin resonance test and numerical simulations. This study explores a novel approach of morphology engineering for enhancing the sonophotocatalytic capability of heterojunction nanoarrays.
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影响因子：
9.5
作者：
Hong, Deyi;Zang, Weili;Xue, Xinyu
通讯作者：
Xue, Xinyu
通过静电纺丝-煅烧技术提高La掺杂ZnO纳米纤维的可见光光催化效率
DOI：
10.1016/j.apmate.2021.09.004
发表时间：
2022-04-01
期刊：
ADVANCED POWDER MATERIALS
影响因子：
--
作者：
Jian, Shaoju;Tian, Zhiwei;Jiang, Shaohua
通讯作者：
Jiang, Shaohua
影响因子：
8.4
作者：
Chakma, Sankar;Moholkar, Vijayanand S.
通讯作者：
Moholkar, Vijayanand S.
影响因子：
29.4
作者：
Hu, Cheng;Chen, Fang;Huang, Hongwei
通讯作者：
Huang, Hongwei
影响因子：
41.2
作者：
Naber, RCG;Tanase, C;De Leeuw, DM
通讯作者：
De Leeuw, DM