Synthesis of Cu-Mo/TiO2 and Co-Mo/TiO2 photocatalysts for the efficient degradation of organic pollutants in water.

Flower-like ZnO/BiOI p–n heterojunction composite membrane composed of nanosheets for enhanced photodegradation of water-soluble pollutant and high efficiency oil–water emulsion separation

Pharmaceuticals, pesticides, and organic dyes form a large group of contaminants contributing to depleting water quality and posing a threat to both flora and fauna. These contaminants are generally released from textile, agricultural, and healthcare industrial processes. There are several techniques that have been developed for the efficient degradation of organic pollutants in water. In this chapter, the significance of photocatalysis using metal oxides and doped metal oxides is discussed. Next, various synthesis routes for advanced materials such as the sol–gel method, hydrothermal method, micro-emulsion method, electrochemical method, and thermal decomposition method are also explained. Furthermore, the chapter highlights the crucial role of modifying advanced materials to improve their effectiveness in removing pollutants. It also discusses techniques involving the addition of metals, non-metals, and polymers to these materials, emphasizing their contribution to enhancing their ability for efficient degradation of organic pollutants. The focal point of this chapter is the use of metal oxides and doped metal oxides to degrade various organic pollutants like pesticides, drugs, and dyes using light. In brief, this chapter emphasizes the importance of photocatalytic materials for the removal of water pollutants to clean our environment.

Activation of peroxymonosulfate by nitrogen-doped porous carbon for efficient degradation of organic pollutants in water: Performance and mechanism

Facile fabrication of ZnO/MoS2 p-n junctions on Ni foam for efficient degradation of organic pollutants through photoelectrocatalytic process

Preparation of reusable UHMWPE/TiO2 photocatalytic microporous membrane reactors for efficient degradation of organic pollutants in water

Carbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: A review

Activation of peroxymonosulfate by nitrogen-functionalized sludge carbon for efficient degradation of organic pollutants in water

In-situ implantation of BiVO4 QDs into NH2-mil-125 to construct Z-scheme heterojunction for photocatalytic degradation of organic pollutants in water

Water, the source of life, is undeniably essential to all living beings in nature. However, the process of industrialization has led to the pollution of water resources. Photocatalytic water treatment technology can convert solar energy into environmentally friendly and renewable chemical energy, effectively degrading organic pollutants in water. This offers a promising solution for the purification of water environments. The development of high-performance photocatalysts is crucial for photocatalytic reactions. Polyoxometalates (POMs) are anionic metal oxide clusters that come in various sizes and shapes. Their unique electronic properties, tunable structures, and photocatalytic activity make them highly promising materials for the efficient degradation of organic pollutants in water. This review summarizes the recent advances in emerging POM-based photocatalytic materials for water treatment, elaborating on their mechanisms of action. Finally, the current development prospects and the future challenges of POM-based photocatalytic materials are envisioned.

High flux Fe/activated carbon membranes for efficient degradation of organic pollutants in water by activating sodium persulfate

Construction of AgI/NH2-MIL-125(Ti) heterojunction: Efficient degradation of organic pollutants in water by visible light response

A novel TiO2-wrapped nanofiber composite catalyst, which possessed a unique porous structure and mixed crystalline phase, was prepared by the combination of superficial sol–gel and post-calcination processes. By means of the superficial sol–gel process, TiO2 layers were deposited on the surface of each nanofiber-like cellulose fiber, and then the TiO2-wrapped nanofiber composite catalysts were calcined at different temperatures under a nitrogen atmosphere. With temperature increasing, the original cotton nanofiber composites were converted into porous carbon nanofiber catalysts wrapped by a TiO2 mixed crystalline phase, which was accompanied by a crystal transformation. The photocatalytic activity of the new catalysts was evaluated by the degradation of methylene blue (MB) under ultraviolet (UV) irradiation. The results demonstrated that the new catalysts had good photocatalytic ability, and the TNC-700 catalyst showed a superior photocatalytic ability compared with the other catalysts; the new catalysts had a unique porous structure, high specific surface area, and mixed crystalline phase. Additionally, the synergistic photocatalytic effect of the TiO2 and activated carbon nanofiber resulted in the efficient degradation of organic pollutants in water or air.

In this study, Z‐scheme NiO/BiO2−x heterojunction was successfully constructed by hydrothermal method, which can maintain strong redox potential and excellent visible light response and effectively improve the separation efficiency of photogenerated carrier. Under visible irradiation, the impact of different contents of NiO in NiO/BiO2−x on photocatalytic activity was explored, and the results shown that 3‐NiO/BiO2−x had the highest photocatalytic activity. The degradation rate of 3‐NiO/BiO2−x for methyl orange (MO) was 7.69 times and 19.7 times higher than pure BiO2−x and NiO, respectively. Moreover, the degradation rate of 3‐NiO/BiO2−x for ciprofloxacin (CIP) was 7.54 times and 60.8 times higher than that of the pure BiO2−x and NiO, respectively. NiO/BiO2−x heterojunction can be used in the field of wastewater treatment due to their excellent degradation activity for organic pollutants.

Microwave-assisted design of S-scheme BiOBr/UiO-66 (Zr) heterojunctions photocatalyst for the efficient degradation of organic pollutants in water: Performance and mechanism studies

Fabrication of Co3O4-Bi2O3-Ti catalytic membrane for efficient degradation of organic pollutants in water by peroxymonosulfate activation