Recent Advances in Photocatalytic Treatment of Pollutants in Water, 2nd Edition

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: 31 January 2026 | Viewed by 576

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Guest Editor
National & Local Joint Engineering Research Center for Textile Fiber Materials and Processing Technology, College of Material Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
Interests: Fenton-like photocatalysis; detection of organic pollutants and degradation products; integration of advanced oxidation technologies and biological processes for industrial wastewater treatment; advanced treatment of water and wastewater
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Guest Editor
National & Local Joint Engineering Research Center for Textile Fiber Materials and Processing Technology, College of Material Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
Interests: photocatalysis; photocatalytic environmental purification; photocatalytic organic synthesis; development of photocatalytic nanomaterials
Special Issues, Collections and Topics in MDPI journals
National & Local Joint Engineering Research Center for Textile Fiber Materials and Processing Technology, College of Material Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
Interests: synthesis of nanoporous photocatalysts; photocatalytic hydrogen production; microsphere-nanofiber composites; biomimetic catalytic structure; organic pollutants and wastewater treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This is the second edition of the successful Special Issue titled “Recent Advances in Photocatalytic Treatment of Pollutants in Water”.

Organic pollutants are widely dispersed in industrial wastewater and have caused widespread environmental concerns. Photocatalysis has been a hotspot of research as an environmentally benign, low-cost and highly efficient approach to the decomposition of organic pollutants.

This Special Issue of Catalysts will cover the recent advancements in photocatalyst development, water environmental remediation applications, industrial wastewater treatment, reaction mechanisms, and modeling processes for water decontamination. The Guest Editors encourage submissions in the following areas:

  • The development of photocatalytic materials;
  • Photocatalytic-based process degradation of emerging contaminants in wastewater;
  • Wastewater recycling and repurposing via photocatalysts;
  • Disinfection and decontamination via advanced oxidation processes (photocatalysis-, ozone, UV, H2O2 and PMS-based processes);
  • Photocatalytic degradation processes and intermediates of emerging contaminants in wastewater.

If you would like to submit papers for publication in this Special Issue or have any questions, please contact the in-house Editor, Mr. Ives Liu (ives.liu@mdpi.com).

Dr. Zhexin Zhu
Dr. Xiufang Chen
Dr. Yinsong Si
Guest Editors

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Keywords

  • photocatalytic nanomaterial
  • advanced oxidation technology
  • environmental photocatalysis
  • degradation mechanism
  • wastewater treatment

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Published Papers (1 paper)

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Research

18 pages, 3492 KB  
Article
Construction of a Visible Light-Driven LaFeO3/Bi4Ti3O12 Heterojunction Photocatalyst Towards Removal of Tetracycline in Aquatic Environment
by Weifang Chen, Na Zhao, Shuo Zhang and Qiaoqiao Ma
Catalysts 2025, 15(12), 1147; https://doi.org/10.3390/catal15121147 - 5 Dec 2025
Viewed by 332
Abstract
A LaFeO3/Bi4Ti3O12 heterojunction photocatalyst composite was constructed for the removal of tetracycline (TC). The structure, morphology, and elemental composition of the composite were systematically characterized using tools such as XRD, SEM, and XPS. The results from [...] Read more.
A LaFeO3/Bi4Ti3O12 heterojunction photocatalyst composite was constructed for the removal of tetracycline (TC). The structure, morphology, and elemental composition of the composite were systematically characterized using tools such as XRD, SEM, and XPS. The results from characterization jointly verified the successful construction of a LaFeO3/Bi4Ti3O12 heterojunction. UV–vis DRS analysis further revealed a narrowing of the optical bandgap from 3.29 eV to 2.24 eV, which enhanced visible-light absorption. Characterization via XPS identified the presence of Fe2+/Fe3+ mixed valence states, while bismuth predominantly existed in the stable Bi3+ state. Under simulated sunlight (300 W xenon lamp) irradiation, the photocatalytic performance of LaFeO3/Bi4Ti3O12 was systematically evaluated. The results demonstrated that the LaFeO3/Bi4Ti3O12 composite achieved a removal efficiency of 95% for TC within 120 min, with a reaction rate constant of 0.023 min−1. The construction of heterojunction greatly increased not only the removal efficiency but also the reaction rate. For instance, the first-order reaction rate constants of LaFeO3/Bi4Ti3O12 were 3.8 and 4.7 times higher than those of pure LaFeO3 and Bi4Ti3O12. TC removal by the composite was affected by dosage, initial TC concentration, and pH of the water. The composite exhibited the best performance at a dosage of 1.6 g/L with a pH around 7–8 and an initial TC concentration less than 20 mg/L. Anions such as Cl and NO3 had minimal impact on its photocatalytic activity, whereas H2PO4, humic acid, showed inhibitory effects. Free radical trapping experiments further confirmed that holes (h+) and hydroxyl radicals (·OH) were the primary active species in the process. Full article
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