The emergence of Mo2C- based catalysts in recent years has been favored as promising contender within diverse class MXenes. In terms of rapid development in the photocatalytic application, these intriguing compounds exhibit excellent photocatalytic performance because of their superior optical properties and peculiar structure characteristics. Unfortunately, a systematic review of Mo2C- based catalysts is lacking. In this review, we abstract the implication of structure—property relationship of emerging Mo2C- based MXenes materials and their applications toward the photocatalytic hydrogen evolution reaction (HER). Furthermore, synthetic pathways to prepare high-quality, low cost Mo2C- based MXenes materials and their outcomes for high HER applications are systematically described. Finally, several insights are provided into the prospects and future challenges for the development of highly reactive Mo2C- based MXenes materials, which present large range opportunities in this promising 2D materials for green and clean energy in environmental fields. This review provides a comprehensive scientific guide to the preparation, modification, and photocatalytic HER of MXenes-based materials.

Leibniz was trying in his whole life to establish mutual understanding and cooperation in many respects, especially between the east and the west. This paper focuses on philosophy of mind in both Confucianism and Leibniz's organism. On the one hand, the two are almost in consonance with each other. Firstly, in the point of mind, Confucianism shows that mind has the characteristic of subjectivity and has a process for self-fulfilment as well. In Leibniz's organism, mind refers to the rational soul, which has the ability of introspection. Secondly, in the point of man, for Confucianism, man has morality, which distinguishes man from beast. For Leibniz, it is alike that man has self-awareness, which makes man to be man. On the other hand, the two are quite different. In the point of the relationship between mind and object, as well as man and the nature, Confucianism holds that mind and object is a unity. Man is an integral part of the nature natively. Nevertheless, as for Leibniz, mind and object are separated. Orders were set up by preestablished harmony. In summary, Confucianism and Leibniz have both the similar and different arguments on mind, which lay exactly the foundation for the dialogue and study between each other.