We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Porphyrin-Conjugated Hybrid Nanomaterials for Photocatalytic Wastewater Remediation
Summary
Researchers reviewed the use of porphyrin-conjugated hybrid nanomaterials for photocatalytic wastewater treatment, including the degradation of microplastics. The study found that these materials show strong visible-light absorption and enhanced electron properties that make them effective at breaking down hazardous pollutants, offering a promising approach for environmental remediation.
Advanced oxidation processes using porphyrin-based heterogeneous catalysts hold promise for removing hazardous pollutants from wastewater. Their high visible-light absorption coefficients enable absorption of light from the solar spectrum. Moreover, their conjugated aromatic skeletons and intrinsic electronic properties facilitate the delocalization of photogenerated electrons during photodegradation. Delaying the recombination of photogenerated electron–hole pairs by introducing specific materials increases efficiency, as separated charges have more time to participate in redox reactions, boosting photocatalytic activities. However, applying these photocatalysts for wastewater treatment is challenging owing to facile agglomeration, deactivation, and recovery of the photocatalyst for reuse, which can significantly increase the overall cost. Therefore, new photocatalytic systems comprising porphyrin molecules must be developed. For this purpose, porphyrins can be conjugated to nanomaterials to create hybrid materials with photocatalytic efficiencies superior to those of free-standing starting porphyrins. Various transition metal oxides (TiO2, ZnO, and Fe3O4) nanoparticles, main-group-element oxides (Al2O3 and SiO2) nanoparticles, metal plasmons (silver nanoparticles), carbon-based platforms (graphene, graphene oxide, and g-C3N4), and polymer matrices have been used as nanostructured solid supports for the successful fabrication of porphyrin-conjugated hybrid materials. The conjugation of porphyrin molecules to solid supports improves the photocatalytic degradation activity in terms of visible-light conversion ability, recyclability, active porous sites, substrate mobility, separation of photogenerated charge species, recovery for reuse, and chemical stability, along with preventing the generation of secondary pollution. This review discusses the ongoing development of porphyrin-conjugated hybrid nanomaterials for the heterogeneous photocatalytic degradation of organic dyes, pharmaceutical pollutants, heavy metals, pesticides, and human care in water. Several important results and advancements in the field allow for a more efficient wastewater remediation process.
Sign in to start a discussion.
More Papers Like This
Porphyrin-Based Nanomaterials for the Photocatalytic Remediation of Wastewater: Recent Advances and Perspectives
This review covers recent advances in porphyrin-based nanomaterials designed for photocatalytic degradation of hazardous contaminants in wastewater under sunlight. The study highlights various fabrication methods and suggests that these self-organized nanostructures hold promise for sustainable water treatment and environmental remediation.
Efficiency of Hybrid Materials for Photocatalytic Degradation of Micro‐ and Nano‐Plastics
Researchers reviewed how hybrid materials — combinations of multiple substances engineered at the nanoscale — can serve as highly effective photocatalysts to break down microplastics and nanoplastics using light energy. These multi-functional materials improve electron separation and reaction efficiency compared to single-component catalysts, representing a promising technological pathway for removing persistent plastic particles from the environment.
Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms
This review explores how nanomaterial-enhanced photocatalysts can break down microplastics that conventional water treatment fails to remove. The paper details key strategies like element doping and heterojunction construction that improve degradation efficiency, and explains the underlying mechanisms involving free radical formation and singlet oxygen oxidation.
Photocatalytic strategy to mitigate microplastic pollution in aquatic environments: Promising catalysts, efficiencies, mechanisms, and ecological risks
This review summarizes recent advances in photocatalytic degradation of microplastics, covering catalysts, mechanisms, and reactive oxygen species generation pathways. The authors call for more realistic photocatalytic materials, better mechanistic understanding of degradation intermediates, and quantitative ecological risk assessment of photocatalysis byproducts.
Photocatalytic Degradation of Microplastics in Aquatic Environments: Materials, Mechanisms, Practical Challenges, and Future Perspectives
This review examines how light-activated materials called photocatalysts can break down microplastics in water into harmless byproducts using sunlight or UV light. While still facing challenges with incomplete breakdown and variable sunlight conditions, this technology offers a promising way to reduce microplastic contamination in water sources that affect human health.