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Metal free benzothiadiazole-diketopyrrolopyrrole-based conjugated polymer/g-C3N4 photocatalyst for enhanced sterilization and degradation in visible to near-infrared region
- Source :
- Journal of Colloid and Interface Science. 608:103-113
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- In recent years, photocatalytic technology has attracted wide attention in environmental treatment, exploring non-toxic and metal-free photocatalysts is imminent to meet sustainable development. However, semiconductors with wide spectral response are rarely studied and applied in the field of photocatalysis. Herein, a new narrow band-gap polymer PFBDT-DPP (P3) with wide absorption from 500 to 860 nm was synthesized and further constructed heterostructure with g-C3N4 for photocatalytic sterilization and degradation of organic pollutant Rhodamine B (RhB). The optimal antibacterial rate for Escherichia coli reached 99.8% after 190 min of light irradiation and for Staphylococcus aureus reached 96.8% after 120 min of irradiation, and the highest degradation efficiency of RhB by P3/g-C3N4 was 98.9% within 60 min light irradiation, while g-C3N4 displayed an unsatisfactory sterilization and photodegradation performance. This is mainly attributed to the broadened light absorption range and enhanced carrier separation efficiency of P3/g-C3N4. This work could provide a new strategy to fabricate metal-free photocatalysts with high utilization of sunlight and excellent photocatalytic performance.
- Subjects :
- chemistry.chemical_classification
Materials science
Polymer
Sterilization (microbiology)
Photochemistry
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
Rhodamine B
Photocatalysis
Degradation (geology)
Irradiation
Absorption (electromagnetic radiation)
Photodegradation
Subjects
Details
- ISSN :
- 00219797
- Volume :
- 608
- Database :
- OpenAIRE
- Journal :
- Journal of Colloid and Interface Science
- Accession number :
- edsair.doi...........cdb3895fc48ea120bda5891afb2d0cd9