Although photocatalysis with ultraviolet-visible (UV-vis) light has made considerable advances, it is limited by the low efficiency of UV-vis energy conversion. To overcome this problem, UV-vis light can be replaced with near-infrared (NIR) light. Herein, we coupled eggshell-derived CaCO with a NIR-absorbing CuSe semiconductor and fabricated an insulator-based heterojunction structure. In application case studies of 4-nitrophenol (4-NP) and bacteria, the nanocomposites showed enhanced photocatalysis activity under NIR light induction. A first-principles calculation indicated that photoexcited electrons could transfer from the conduction band of CuSe to the conduction band of CaCO. The main reactive species generated by the photocatalysis were ·CO, and ·OH free radicals. The antibacterial mechanisms of photocatalysis on the cell permeability and DNA layers of the bacterial cells were also revealed. Besides providing novel perspectives and mechanistic understanding of the fabrication of NIR light-driven photocatalysts, this study demonstrates the valorization of eggshell bio-wastes in environmental remediation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2022.135789 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dual-fluorescent starch biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine powder as a functional nanofiller.
Sci Rep
December 2024
Department of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, Akademicka 13, Lublin, 20-950, Poland.
Physical and photophysical properties of starch-based biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine (NTA) powder as a nanofiller were examined using atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), stationary UV-Vis and fluorescence spectroscopy as well as resonance light scattering (RLS) and time-resolved measurements, and where possible, analyzed with reference to pristine NTA solutions. AFM studies revealed that the addition of NTA into the starch biopolymer did not significantly affect surface roughness, with all examined films displaying similar Sq values ranging from 70.7 nm to 79.
View Article and Find Full Text PDFCharacteristics and Antitumor Activity of Doxorubicin-Loaded Multifunctional Iron Oxide Nanoparticles in MEC1 and RM1 Cell Lines.
J Funct Biomater
December 2024
Division of Immunology and Microbiology, Iv. Javakhishvili Tbilisi State University, 1, Ilia Tchavchavadze Ave., 0179 Tbilisi, Georgia.
The rapid progress in nanotechnology has introduced multifunctional iron oxide nanoparticles as promising agents in cancer treatment. This research focused on the synthesis and assessment of citric-acid-coated, folic-acid-conjugated nanoparticles loaded with doxorubicin, evaluating their therapeutic potential in tumor models. An advanced automated continuous technology line (CTL) utilizing a controlled co-precipitation method was employed to produce highly dispersive, multifunctional nanofluids with a narrow size distribution.
View Article and Find Full Text PDFVisible light-driven photocatalytic degradation of atrazine in aqueous phase: impact of the g-CN/TiO/NiFeO nanocomposite activated by potassium peroxymonosulfate.
Environ Sci Pollut Res Int
December 2024
Department of Soil Sciences and Agri-Food Engineering, Centre in Green Chemistry & Catalysis, Centr'Eau, University Laval, Quebec, G1V 0A6, Canada.
The present investigation focused on the photocatalytic degradation of aqueous atrazine over g-CN/TiO/NiFeO composite in the presence of peroxymonosulfate (PMS) under visible light irradiation. The ternary photocatalyst was synthesized and characterized using XRD, FTIR, nitrogen sorption, SEM, UV-Vis, and photoluminescence spectroscopy. This catalyst exhibited full absorption in the visible spectrum at 815 nm and a high specific surface area of 105 m/g.
View Article and Find Full Text PDFInterlaboratory Measurement of Adeno-Associated Virus: Comparative Quantification of Full and Empty Capsids.
Hum Gene Ther
December 2024
Prevail Therapeutics, New York, New York, USA.
Recombinant adeno-associated virus (AAV) is one of the main viral vector-based gene therapy platforms. AAV is a virus consisting of a ≈25 nm diameter capsid with a ≈4.7 kb cargo capacity.
View Article and Find Full Text PDFGreen Synthesis of Zinc Oxide Nanoparticles Including Rosehip (Rosa canina L.) Seed Extract: Evaluation of its Characterization and Bioactivity Properties.
Chem Biodivers
December 2024
İstanbul Üniversitesi-Cerrahpaşa: Istanbul Universitesi-Cerrahpasa, Chemical Engineering, Avcılar, İstanbul, TURKEY.
The use of bioactive compounds in plants as reducing, stabilizing, and capping agents in nanoparticle manufacturing is an exceptionally eco-friendly approach. This work used rosehip seed extract, acquired by automatic solvent extraction, in the microwave-assisted green production of zinc oxide nanoparticles (ZnO NPs). The total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of the extracted materials and nanoparticles were assessed using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!