DataVXACS Applied Nano MaterialsPaper
journal article·2022-01-28

Molybdenum Sulfide Quantum Dots Decorated on TiO2 for Photocatalytic Hydrogen Evolution

Tianyang Qiu, Lu Wang, Boye Zhou, Yanjun Zhu, Chen Zhuang, Qi Liu, Qing Shen, Yujie Xiong, Yong Zhou, Zhigang Zou

ACS Applied Nano Materials· Volume 5· Issue 1
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Source abstract

Abstract

Molybdenum disulfide (MoS2) has been identified as an active non-noble-metal-based cocatalyst for photocatalytic water splitting. Here, a TiO2 nanoplate/amorphous MoS2 quantum dot (a-MoS2) composite was developed via in situ sulfuration of MoO3/TiO2. Due to intimate chemical bonding instead of electrostatic adsorption between TiO2 and MoO3, effective transfer of electrons from TiO2 to a-MoS2 is achieved. Additionally, a-MoS2 with an outstanding electron conveying ability can function as an electron collector and catalytic sites. As a result, the obtained a-MoS2/TiO2 nanocomposite achieved an average yield of H2 up to 371 μmol·g–1·h–1 when the content of the cocatalyst was 1.5 wt %, which is 309 and 79 times those of bare TiO2 and trigonally coordinated MoS2/TiO2, respectively. The highest yield rate of H2 up to 880.3 μmol·g–1·h–1 was obtained over a-MoS2/TiO2. This work may provide a wider perspective on the preparation of a low-cost cocatalyst with high conversion efficiency, to replace other commonly used MoS2-based cocatalysts to solve the energy crisis.
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Research context

NanomaterialsCompositesCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, School of Physics, Eco-materials and Renewable Energy Research Center (ERERC), National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing, Jiangsu 210093, China

School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China

Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan

Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China

Kunshan Sunlaite New Energy Co., Ltd., Kunshan Innovation Institute of Nanjing University, Kunshan, No. 1666, South Zuchongzhi Road, Kunshan, Jiangsu 215347, P. R. China

School of Science and Engineering, The Chinese University of Hongkong (Shenzhen), Shenzhen, Guangdong 518172, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · Central University Basic Research Fund of China · National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Hefei National Laboratory for Physical Sciences at the Microscale, University of Science & Technology of China. · University Development Fund · Guangdong Introducing Innovative and Entrepreneurial Team

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