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Heteroepitaxial Growth of 1T MoS2 Nanosheets on SnO2 with Synergetic Improvement on Photocatalytic Activity
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-12-29 , DOI: 10.1002/crat.202000091 Songting Shan 1 , Shuaishuai Zhu 1 , Zhigang Pan 1, 2 , Yinong Lu 1, 2 , Yunfei Liu 1, 2 , Yaqiu Tao 1, 2
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-12-29 , DOI: 10.1002/crat.202000091 Songting Shan 1 , Shuaishuai Zhu 1 , Zhigang Pan 1, 2 , Yinong Lu 1, 2 , Yunfei Liu 1, 2 , Yaqiu Tao 1, 2
Affiliation
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Molybdenum disulfide has promising applications from electronics to catalysis. Facile controlled synthesis of desired MoS2 phase and improving optical and electrical properties of MoS2 are under intensive investigation. The significant enhancement in photocatalytic activity is found in the heteroepitaxial structure of 1T MoS2 and SnO2 constructed using convenient hydrothermal method compared to 1T MoS2. High‐resolution transmission electronic microscopy demonstrates epitaxial growth of 1T MoS2 nanosheets on SnO2 nanoparticle based on an epitaxial relationship of zone axis MoS2[100]//SnO2[ ] and MoS2[100]//SnO2[ ] and plane MoS2(011)//SnO2(011) in both cases. Serving as substrate for growth of desired 1T MoS2 phase, smaller grain‐sized SnO2 is in favor of more effective epitaxial growth of 1T MoS2. The epitaxial structure formed between 1T MoS2 and SnO2 of 3–5 nm ensures stable electron transfer and thus a much‐improved photocatalytic activity. Direct evidence of epitaxial construction of desired 1T MoS2 nanosheets on SnO2 nanoparticles is provided, which accounts for the synergetic improvement on photocatalytic activity of MoS2–SnO2 composite photocatalysts.
中文翻译：
在SnO2上异质外延生长1T MoS2纳米片并协同提高光催化活性
二硫化钼具有从电子到催化的广阔前景。期望的MoS的简易控制合成2相和MoS的改进的光学和电学性质2正在深入研究。与1T MoS 2相比，使用方便的水热法构建的1T MoS 2和SnO 2的异质外延结构发现光催化活性显着增强。高分辨率透射电子显微镜表明，基于区域轴MoS 2 [100] // SnO 2 [ ]的外延关系，在SnO 2纳米颗粒上外延生长1T MoS 2纳米片。]和MoS 2 [100] // SnO 2 []和飞机MoS 2（011）// SnO 2（011）。较小尺寸的SnO 2用作所需1T MoS 2相生长的基质，有利于1T MoS 2的更有效的外延生长。在1T MoS 2和SnO 2之间形成的3–5 nm的外延结构确保了稳定的电子传输，因此大大提高了光催化活性。提供了在SnO 2纳米颗粒上外延构建所需的1T MoS 2纳米片的直接证据，这说明了MoS 2 -SnO 2复合光催化剂的光催化活性协同提高。
更新日期：2021-02-11
中文翻译：
在SnO2上异质外延生长1T MoS2纳米片并协同提高光催化活性
二硫化钼具有从电子到催化的广阔前景。期望的MoS的简易控制合成2相和MoS的改进的光学和电学性质2正在深入研究。与1T MoS 2相比，使用方便的水热法构建的1T MoS 2和SnO 2的异质外延结构发现光催化活性显着增强。高分辨率透射电子显微镜表明，基于区域轴MoS 2 [100] // SnO 2 [ ]的外延关系，在SnO 2纳米颗粒上外延生长1T MoS 2纳米片。]和MoS 2 [100] // SnO 2 []和飞机MoS 2（011）// SnO 2（011）。较小尺寸的SnO 2用作所需1T MoS 2相生长的基质，有利于1T MoS 2的更有效的外延生长。在1T MoS 2和SnO 2之间形成的3–5 nm的外延结构确保了稳定的电子传输，因此大大提高了光催化活性。提供了在SnO 2纳米颗粒上外延构建所需的1T MoS 2纳米片的直接证据，这说明了MoS 2 -SnO 2复合光催化剂的光催化活性协同提高。
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