Highly ordered 2D honeycomb polyoxometalate clusterphene for efficient photocatalytic degradation of organic pollutants: Mechanism, pathways, and toxicity evaluation

Zhang，Xinyi1; Xu，Yiguo3; Guo，Rongshuo1; Chen，Yinxiang2; Zhang，Ye1,2

2024-05-30

10.1016/j.apsusc.2024.159675

Applied Surface Science   影响因子和分区

0169-4332

Self-assembled nanomaterials have aroused enormous interest owing to their enhanced physicochemical properties as compared to monomers. Herein, two-dimensional Nd-based polyoxometalate clusterphene (Nd-POMCene) with a highly ordered honeycomb structure is synthesized by self-assembly, which is demonstrated with efficient photocatalytic degradation performance towards organic dyes, such as Rhodamine B (RhB), methylene blue, and crystal violet. Especially, RhB can be totally photodegraded by Nd-POMCene under the simulated sunlight within 1 h while a degraded efficiency of 97.50 % can be achieved under natural light within 2 h. As proved by the density functional theory results, the highly ordered structure of POMCene is beneficial for enhancing photocatalytic performance associated with the improved separation/transmission of photogenerated electron/hole pairs and large-scale electron delocalization. The mechanism study provides compelling evidence to demonstrate that all of holes, hydroxyl radicals, and superoxide radicals chemically account for the efficient photodegradation by Nd-POMCene. Finally, it is verified that there is much less toxicity in the degradation products of RhB.

DFT calculations Highly ordered structure Organic pollutants Photocatalytic degradation Polyoxometalate clusterphene

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85185395565

Scopus

1.Lab of Optoelectronic Technology for Low Dimensional Nanomaterials,School of Chemistry and Chemical Engineering,University of South China,Hengyang,421001,China
2.School of Resources Environment and Safety Engineering,University of South China,Hengyang,421001,China
3.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Xinyi,Xu，Yiguo,Guo，Rongshuo,et al. Highly ordered 2D honeycomb polyoxometalate clusterphene for efficient photocatalytic degradation of organic pollutants: Mechanism, pathways, and toxicity evaluation[J]. Applied Surface Science,2024,656.

Zhang，Xinyi,Xu，Yiguo,Guo，Rongshuo,Chen，Yinxiang,&Zhang，Ye.(2024).Highly ordered 2D honeycomb polyoxometalate clusterphene for efficient photocatalytic degradation of organic pollutants: Mechanism, pathways, and toxicity evaluation.Applied Surface Science,656.

Zhang，Xinyi,et al."Highly ordered 2D honeycomb polyoxometalate clusterphene for efficient photocatalytic degradation of organic pollutants: Mechanism, pathways, and toxicity evaluation".Applied Surface Science 656(2024).