点击次数：

发表刊物：Applied Surface Science

刊物所在地：Elsevier

关键字：g-C3N4, TiB2, core-Shell structure, photocatalysts, heterojunction

摘要：g-C3N4 based heterojunction photocatalysts attract much attention as degradation materials for organic pollutants due to their wide light absorption range and rich photoinduced carriers. Strategies to effectively improve photoelectron separation and transmission have become a research hotspot. Herein, a novel heterojunction TiB2TiO2@g-C3N4 photocatalyst with core–shell structure was constructed by in-situ growth of g-C3N4 on the TiB2TiO2 cores using one-step calcination method. The composite processes a higher photodegradation performance of Rhodamine B (RhB) and 4-Chlorophenol (4-CP) compared to the pure g-C3N4. The results show that the surface of TiB2-TiO2 cores contains numerous ‘TiB2 bridges’, as photoinduced carriers transport channels, which effectively accelerate photoinduced e- and h+ migration. In addition, the g-C3N4 coated on TiB2-TiO2 cores forms a Z-scheme heterojunction, which hinders the recombination of photogenerated charges resulting in a longer electron lifetime. Furthermore, the TiB2 also could act as acceptors of electrons for the formation of •O2–. The main active substances for degradation of RhB are •OH, •O2– and h+. This strategy is applicable to design highly capable heterojunction photocatalysts by constructing fast electronic transmission channels.

全部作者：Shasha Xu,Shijie Zhang,Shuguang Wang

第一作者：Huijun Yu

论文类型：期刊论文

通讯作者：Zuoli He

卷号：579

页面范围：152201

是否译文：否

发表时间：2022-01-01

收录刊物：SCI