Tang Jiayu, Shi Yunpeng, Cai Wei, Liu Fengling
Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China.
ACS Omega. 2020 Apr 16;5(16):9576-9584. doi: 10.1021/acsomega.0c00909. eCollection 2020 Apr 28.
SrZrO/flower-like MoS composites with an embedded heterostructure were synthesized via a simple two-step hydrothermal method and their performance was evaluated by photodegradation of methylene blue (MB) under solar-simulated light irradiation. The sandwiched flower-like MoS with a high Mo(VI) ratio was adopted as the matrix, and SrZrO was grown between the MoS layers, forming an intense contact interface, which promotes the efficient separation and transport of photoinduced carriers. The enhanced photocatalytic degradation of 99.7% after 80 min of irradiation is exhibited over the MS5 sample (5 wt % SrZrO loading amount on the MoS matrix). Moreover, the ratio of Mo(VI) and the superoxide radical plays a crucial role in the photodegradation of MB, and the higher the ratio the better the performance. This work provided a strategy to design a new kind of photocatalyst for photocatalysis and indicated that MoS is preferably adopted as a matrix rather than as a loading component.
通过简单的两步水热法合成了具有嵌入式异质结构的SrZrO/花状MoS复合材料，并通过在模拟太阳光照射下对亚甲基蓝（MB）进行光降解来评估其性能。采用具有高Mo(VI)比例的夹心花状MoS作为基质，在MoS层之间生长SrZrO，形成紧密的接触界面，促进光生载流子的有效分离和传输。在MS5样品（MoS基质上SrZrO负载量为5 wt%）上，照射80分钟后光催化降解率提高到99.7%。此外，Mo(VI)与超氧自由基的比例在MB的光降解中起关键作用，该比例越高性能越好。这项工作为设计一种新型光催化剂用于光催化提供了策略，并表明MoS更适合作为基质而非负载组分。
