论文类型：期刊论文
发表刊物：ACS EST Water
收录刊物：SCI
文献类型：J
关键字：laser powder bed fusion, dealloying, hierarchically porous photocatalyst, TiO2, tetracycline degradation
DOI码：10.1021/acsestwater.3c00675
发表时间：2024-02-14
摘要：Hierarchically porous photocatalysts exhibit superior light-harvesting capacity and enhanced photocatalytic activity. In this work, a facile method by combining additive manufacturing (AM) and dealloying was employed to prepare a hierarchically porous photocatalyst, namely, nanoporous-TiO2-encapsulating macroporous-double-gyroid-structure photocatalyst (TiO2@DGS). It was found that TiO2@DGS possessed deterministic macropores and interconnected nanopores, which offered efficient mass transfer channels and abundant active sites, respectively. Thus, TiO2@DGS showed excellent photocatalytic capability under ultraviolet–visible (UV–vis) light irradiation and achieved a tetracycline degradation efficiency of over 90% within 60 min (photocatalytic rate constant k = 4.0 × 10–2 min–1). Furthermore, TiO2@DGS exhibited excellent durability and reusability due to its stable three-dimensional structures. This work not only exemplifies the high performance of the prepared TiO2@DGS for environmental remediation but also provides an innovative approach to introduce tailored macrostructures into hierarchically porous photocatalysts through the incorporation of AM and dealloying.
发布期刊链接：https://pubs.acs.org/doi/10.1021/acsestwater.3c00675