摘要
Two-dimensional(2D)transition metal dichalcogenides(TMDCs)are emerging as promising building blocks of high-performance photocatalysts for visible-light-driven water splitting because of their unique physical,chemical,electronic,and optical properties.This review focuses on the fundamentals of 2D TMDC-based mixed-dimensional heterostructures and their unique properties as visible-light-driven photocatalysts from the perspective of dimensionality and interface engineering.First,we discuss the approaches and advantages of surface modification and functionalization of 2D TMDCs for photocatalytic water splitting under visible-light illumination.We then classify the strategies for improving the photocatalytic activity of 2D TMDCs via combination with various low-dimensional nanomaterials to form mixed-dimensional heterostructures.Further,we highlight recent advances in the use of these mixed-dimensional heterostructures as high-efficiency visible-light-driven photocatalysts,particularly focusing on synthesis routes,modification approaches,and physiochemical mechanisms for improving their photoactivity.Finally,we provide our perspectives on future opportunities and challenges in promoting real-world photocatalytic applications of 2D TMDC-based heterostructures.
基金
the financial support from the Research Grants Council of Hong Kong(No.15304519)
the National Natural Science Foundation of China(No.11904306)
the Hong Kong Polytechnic University(No.1-ZVH9)
The authors also thank the Fundamental Research Funds for the Central Universities(Nos.2019B02414 and 2019B44214)
PAPD,and Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering,MOE(No.KLIEEE-18-02).
