» Articles » PMID: 36936836

Metalloporphyrin Modified Defective TiO Porous Cages with the Enhanced Photocatalytic Activity for Coupling of Hydrogen Generation and Tetracycline Removal

Overview
Journal RSC Adv
Specialty Chemistry
Date 2023 Mar 20
PMID 36936836
Authors
Affiliations
Soon will be listed here.
Abstract

Integration of molecular transition-metal complexes and semiconductors is an appealing method to develop high-performance hybrid photocatalysts based on improvement of their solar energy harvesting ability and photogenerated charge carrier separation efficiency. Herein, Cu-TCPP modified TiO porous cages with oxygen vacancy defects, derived from NH-MIL-125(Ti) nanocrystals, are successfully prepared to form PC-TiO-/Cu-TCPP hybrids a surface assembly process. The PC-TiO-/Cu-TCPP hybrid shows an enhanced photodegradation efficiency (73.7%, 95.4%) towards tetracycline in the air under visible light or the simulated sunlight irradiation compared to PC-TiO- (33.7%, 81.1%) within 100 min. Moreover, the photocatalytic system is applicable to coupling both processes of solar fuel production and pollutant degradation. The PC-TiO-/Cu-TCPP hybrid exhibits a high hydrogen evolution rate of ∼2 mmol g h in the aqueous solution of tetracycline in an inert atmosphere upon irradiation by the simulated sunlight. In contrast, an inferior photocatalytic performance of hydrogen evolution is observed in pure water without the addition of tetracycline. Finally, the high sustainability of PC-TiO-/Cu-TCPP is mainly attributed to the strong interaction between the molecular photosensitizer and the semiconductor photocatalyst by oxygen vacancies and Cu(ii) ions.

References
1.
Hiroto S, Miyake Y, Shinokubo H . Synthesis and Functionalization of Porphyrins through Organometallic Methodologies. Chem Rev. 2016; 117(4):2910-3043. DOI: 10.1021/acs.chemrev.6b00427. View

2.
Ye T, Liu H, Qi W, Qu J . Removal of pharmaceutical in a biogenic/chemical manganese oxide system driven by manganese-oxidizing bacteria with humic acids as sole carbon source. J Environ Sci (China). 2022; 126:734-741. DOI: 10.1016/j.jes.2022.05.035. View

3.
Wang C, Cai M, Liu Y, Yang F, Zhang H, Liu J . Facile construction of novel organic-inorganic tetra (4-carboxyphenyl) porphyrin/BiMoO heterojunction for tetracycline degradation: Performance, degradation pathways, intermediate toxicity analysis and mechanism insight. J Colloid Interface Sci. 2021; 605:727-740. DOI: 10.1016/j.jcis.2021.07.137. View

4.
Zhou T, Zhang Z, Liu H, Dong S, Nghiem L, Gao L . A review on microalgae-mediated biotechnology for removing pharmaceutical contaminants in aqueous environments: Occurrence, fate, and removal mechanism. J Hazard Mater. 2022; 443(Pt A):130213. DOI: 10.1016/j.jhazmat.2022.130213. View

5.
Wan J, Chen W, Jia C, Zheng L, Dong J, Zheng X . Defect Effects on TiO Nanosheets: Stabilizing Single Atomic Site Au and Promoting Catalytic Properties. Adv Mater. 2018; 30(11). DOI: 10.1002/adma.201705369. View