Toward practical solar-driven photocatalytic water splitting on two-dimensional MoS2 based solid-state Z-scheme and S-scheme heterostructure

• Published in: Fuel (Guildford) 2021-11, Vol.303, p.121302, Article 121302
• Main Authors: Raizada, Pankaj, Nguyen, Thi Hong Chuong, Patial, Shilpa, Singh, Pardeep, Bajpai, Archana, Nguyen, Van-Huy, Nguyen, Dang Le Tri, Cuong Nguyen, Xuan, Aslam Parwaz Khan, Aftab, Rangabhashiyam, S., Young Kim, Soo, Le, Quyet Van
• Format: Article
• Language: English
• Subjects: Absorptivity; All-solid-state Z-schemes; Charge transfer; H2 evolution; Heterostructures; Hydrogen evolution reactions; Hydrogen production; Improved photocatalytic performance; Molybdenum disulfide; Molybdenum disulfide (MoS2); Optoelectronics; Photocatalysis; Photocatalysts; Photoexcitation; Photosynthesis; Physiochemistry; Reviews; Solar energy; Splitting; Synergistic effect; Water splitting
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2021.121302

The review provides construction of different Z-scheme systems between MoS2 and other semiconductors, a promising way to improve charge kinetic and separation mechanism which is a bottleneck to enhance photocatalytic water splitting reactions. [Display omitted] •The MoS2 Z-schemes for photocatalytic water splitting is comprehensively reviewed.•The in-depth mechanism of the potential MoS2 for H2 evolution is summarized.•The structural and optical properties of MoS2 are briefly discussed.•The ongoing challenges and opportunities of MoS2 based Z-schemes are proposed. Solar-driven splitting of water to hydrogen production is one of the utmost auspicious and cost-effective technologies providing sustainable fuel as it necessitates only sunlight and water. This substantial technology can be achieved in a two step-photoexcitation system using an artificial Z-scheme process. The key to comprehend this reaction is to discover an effective and robust photocatalyst which preferably makes sufficient use of solar energy. Benefiting from the ultrahigh surface area, appropriate band potentials and unique physiochemical properties of 2D layered structure, MoS2 has attained intensive research attention for hydrogen evolution reaction. The comprehensive review summarizes the recent progression in solid mediator Z-scheme based MoS2 particularly in the field of water splitting. The review initiates with the important bases of Z-scheme water splitting mechanism in addition to structural and optoelectronic properties of MoS2. In addition, detailed discussion on the solid-mediator Z-schemes to further improve the photocatalytic efficacy and limit the back (water-forming) reactions. The review mainly focuses on the solid-mediator based Z-schematic systems involving new tandem structures with an efficient synergistic effect to achieve both wide-range light absorptivity and charge pairs transference. In addition, a new S-scheme heterostructing is briefly introduced to understand the charge-transport route clearly and vividly. The aim of wide-spreading water splitting devices from lab-scale to wide-range potential applications has been considered as ‘artificial photosynthetic leaf-to-tree challenge’. Finally, a summary and outlook on the challenges and future research topics on MoS2 based Z-scheme heterostructure photocatalysts are presented.