Volume 56, Issue 2 2000091
Original Paper

Heteroepitaxial Growth of 1T MoS2 Nanosheets on SnO2 with Synergetic Improvement on Photocatalytic Activity

Songting Shan

Songting Shan

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

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Shuaishuai Zhu

Shuaishuai Zhu

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

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Zhigang Pan

Zhigang Pan

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

State Key Laboratory of Materials-Oriented Chemical Engineering, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

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Yinong Lu

Yinong Lu

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

State Key Laboratory of Materials-Oriented Chemical Engineering, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

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Yunfei Liu

Yunfei Liu

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

State Key Laboratory of Materials-Oriented Chemical Engineering, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

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Yaqiu Tao

Corresponding Author

Yaqiu Tao

College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

State Key Laboratory of Materials-Oriented Chemical Engineering, 30 South Puzhu Road, Nanjing, Jiangsu Province, 21800 P. R. China

E-mail: taoyaqiu@njtech.edu.cn

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First published: 29 December 2020
Citations: 4

Abstract

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[ 1 ¯ 1 1 ¯ ] and MoS2[100]//SnO2[ 1 1 ¯ 1 ] 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.

Conflict of Interest

The authors declare no conflict of interest.

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