Green Synthesized Composite AB-Polybenzimidazole/TiO2 Membranes with Photocatalytic and Antibacterial Activity DOI Creative Commons
Hristo Penchev, Katerina Zaharieva, S. Dimova

et al.

Crystals, Journal Year: 2024, Volume and Issue: 14(12), P. 1081 - 1081

Published: Dec. 16, 2024

Novel AB-Polybenzimidazole (AB-PBI)/TiO2 nanocomposite membranes have been prepared using a synthetic green chemistry approach. Modified Eaton’s reagent (methansulfonic acid/P2O5) was used as both reaction media for microwave-assisted synthesis of AB-PBI and an efficient dispersant partially agglomerated titanium dioxide powders. Composite 80 µm thickness by film casting approach involving subsequent anti-solvent inversion in order to obtain porous composite possessing high sorption capacity. The maximal TiO2 filler content achieved 20 wt.% nanoparticles (NPs). Titania particles were synthesized (using different Mentha Spicata (MS) aqueous extract) hydrothermal activation (150 °C), followed thermal treatment at 400 °C. various methods such powder X-ray diffraction Thermogravimetric analyses, photoelectron spectroscopy, Fourier transform infrared spectroscopy Energy-dispersive Electronic paramagnetic resonance, Scanning Electron Microscopy Transmission study the phase surface composition, structure, morphology, behavior membranes. photocatalytic ability so-prepared AB-Polybenzimidazole/bio-TiO2 studied decolorization Reactive Black 5 (RB5) model azo dye pollutant under UV light illumination. polymer membrane basic form, containing particles, obtained with 40 mL quantity MS extract, exhibiting highest rate (96%) after 180 min irradiation. AB-Polybenzimidazole/TiO2 samples powerful antibacterial effect on E. coli when irradiated light.

Language: Английский

State-of-the-art review on photocatalysis for efficient wastewater treatment: Attractive approach in photocatalyst design and parameters affecting the photocatalytic degradation DOI Creative Commons
Dong‐Eun Lee,

Mo-Keun Kim,

Mohtaram Danish

et al.

Catalysis Communications, Journal Year: 2023, Volume and Issue: 183, P. 106764 - 106764

Published: Sept. 15, 2023

This review focuses on recently proposed photocatalyst designs for maximizing the efficiency of photogenerated charge carriers to improve photocatalytic performance photocatalysts. These include doping with metal and non-metal ions, surface grafting, noble deposition, dye sensitization, heterostructure fabrication. In addition, this thoroughly examines all prominent parameters that can influence degradation Furthermore, summarizes energy-band structures photocatalysts are suitable both O2 reduction oxidation H2O molecules generate reactive oxygen species. Lastly, we discuss future trends in development environmental applications.

Language: Английский

Citations

116
Sol-Gel technique, characterization and photocatalytic degradation activity of Manganese doped ZnO nanoparticles DOI

A. Kistan,

Sneha Mohan,

S. Mahalakshmi

et al.

Main Group Chemistry, Journal Year: 2023, Volume and Issue: 23(1), P. 17 - 30

Published: Nov. 17, 2023

Photocatalysis using semiconductor metal oxide stands out as a highly effective and efficient method for eliminating organic pollutants from wastewater. This study aims to assess the photocatalytic capabilities of Mn doped ZnO nanocomposites in degrading methylene blue (MB) dye under ultra-violet light exposure. details synthesis photocatalysts through straightforward one-step sol-gel method, incorporating varying levels Mn-doping (0%, 2% & 4%). The structural optical attributes were examined techniques such powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission (TEM), energy dispersive spectroscopy (EDS) UV-Vis diffuse reflectance spectra. analyses verified presence hexagonal wurtzite crystal structure all synthesized samples, exhibiting high degree crystallinity. In addition, an investigation into impact impurities on performance catalysts was conducted context degradation. experimental findings revealed that nanoparticles produced exhibited significantly superior compared pure when used breaking down UV-light proposes these could serve photocatalyst treating water contaminated with certain chemically persistent synthetic dyes. improved nanostructures ascribed synergistic increased surface area nanosphere enhanced efficiency charge separation resulting optimized doping. A potential explanation heightened Mn-doped is proposed tentatively.

Language: Английский

Citations

44
Facile Synthesis of Ni-Doped ZnO Nanoparticles Using Cashew Gum: Investigation of the Structural, Optical, and Photocatalytic Properties DOI Creative Commons

Alexsandro Lins,

Aimée G. Jerônimo,

Ricardo Luís Barbosa

et al.

Molecules, Journal Year: 2023, Volume and Issue: 28(23), P. 7772 - 7772

Published: Nov. 25, 2023

This work adopted a green synthesis route using cashew tree gum as mediating agent to obtain Ni-doped ZnO nanoparticles through the sol–gel method. Structural analysis confirmed formation of hexagonal wurtzite phase and distortions in crystal lattice due inclusion Ni cations, which increased average crystallite size from 61.9 nm 81.6 nm. These resulted growth point defects structure, influenced samples’ optical properties, causing slight reductions band gaps significant increases Urbach energy. The fitting photoluminescence spectra an increase concentration zinc vacancy (VZn) monovacancies (Vo) Zn cations were replaced by structure. percentage VZn for pure compound was 11%, increasing 40% 47% samples doped with 1% 3% respectively. In contrast, highest VO is recorded material lowest ions concentration, comprising about 60%. influence dopant also reflected photocatalytic performance. Among tested, Zn0.99Ni0.01O presented best result MB degradation, reaching efficiency 98.4%. Thus, recovered underwent reuse tests, revealing 98.2% dye confirming stability photocatalyst. Furthermore, use different inhibitors indicated that •OH radicals are main ones involved removing pollutant. valuable because it presents ecological gum, natural polysaccharide has been little explored literature.

Language: Английский

Citations

31
Cu and Ni dual-doped ZnO nanostructures templated by cellulose nanofibrils for the boosted visible-light photocatalytic degradation of wastewater pollutants DOI
Jiangang Yu,

Pingnian Bao,

Jia Liu

et al.

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(24), P. 10530 - 10537

Published: Jan. 1, 2023

Cu and Ni dual-doped nano-ZnO particles immobilized on cellulose nanofibrils were developed for boosting the photocatalytic performance towards degradation of various wastewater pollutants under blue light irradiation.

Language: Английский

Citations

13
The Synthesis and Photocatalytic Efficacy of Distinct Nano-Oxides in the Breakdown of Organic Contaminants DOI Open Access
Jelena Pavlović, Nataša Novak Tušar, Nevenka Rajić

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(11), P. 771 - 771

Published: Oct. 31, 2024

Nano metal oxides (NMOs), with their unique physico-chemical properties and low toxicity, have become a focus of research in heterogeneous catalysis. Their distinct characteristics, which can be tailored based on size structure, make them highly efficient catalysts. NMOs the potential to significantly contribute degradation numerous environmental pollutants through photolytic decomposition. This work comprehensively analyzes synthesis, catalytic performance, applications photocatalytically active oxides, specifically titanium, zinc, copper, iron, silver, tin, tungsten oxides. The primary objective is demonstrate how effectiveness photocatalytic processes enhanced optimized by incorporating metals, non-metals, metalloids into structure forming heterostructures. Furthermore, aim understand underlying process oxidation thoroughly. Photocatalysis, promising approach advanced processes, has garnered significant interest these fields.

Language: Английский

Citations

5
Selective photocatalytic oxidation of (hetero)aryl alcohols to aldehydes and ketones by visible-light-absorbing three-dimensional Ni/ZnO nanoparticles DOI
Zahra Bazyar, Zahra Bazyar,

Nastaran Moalemiyan

et al.

Reaction Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Heterogeneous photocatalysis offers a promising avenue for green oxidation processes in organic synthesis.

Language: Английский

Citations

0
Structural and Optoelectronic Properties of Ni-Doped ZnO-Based Thin Films Deposited by Co-precipitation Spin-Coating Method DOI
M. Salem,

Amel Haouas,

Abdullah Almohammedi

et al.

Journal of Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 6, 2025

Language: Английский

Citations

0
Synthesis, Characterization and Photocatalytic Applications of Nanocomposites with Nickel Nitrate Doped Zinc Oxide Nanoparticles DOI Open Access
A. Andrews, M. Packiya raj, Anand Gaspar

et al.

Asian Journal of Chemistry, Journal Year: 2025, Volume and Issue: 37(6), P. 1289 - 1293

Published: May 27, 2025

In this work, the co-precipitation method was used to synthesize nickel nitrate-doped zinc oxide (Ni:ZnO) nanoparticles. Zinc (ZnO) is widely known for its optical, electrical and catalytic properties, making it a versatile material in various applications, including sensors, catalysis optoelectronic devices. The incorporation of nitrate into ZnO matrix aims enhance structural functional properties by altering defect states, band gap surface morphology. study, Ni-doped nanoparticles were prepared using as precursor dopant. doping concentration varied investigate impact on structural, optical magnetic synthesized material. employed, followed calcination achieve crystallization. characterized X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) UV-Vis spectroscopy. results revealed that significantly affected crystallite size, bandgap energy absorption ZnO, Ni:ZnO promising candidate potential applications photocatalysis, cyclic voltammetery provides insights electrochemical optoelectronics.

Language: Английский

Citations

0
Investigating the Effect of Nickel Concentration on the Photocatalytic Activity of ZnO Photocatalysts for Methylene Blue Dye Degradation Prepared via Facile Green Synthesis Method DOI Creative Commons

N.S. Mohan,

Arunachalam Arulraj, R.V. Mangalaraja

et al.

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: unknown, P. 100802 - 100802

Published: Sept. 1, 2024

Language: Английский

Citations

2
Green synthesis of ZnO and Ni-doped ZnO from okra stalks for the photocatalytic degradation of Procion Red MX-5B DOI
Sabit Horoz, Ceren Orak, Emre Biçer

et al.

International Journal of Phytoremediation, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 9

Published: Oct. 14, 2024

This study investigates the photocatalytic degradation of Procion Red MX-5B (PRM) using ZnO and Ni-doped catalysts derived from okra stalks through a green synthesis method. Various parameters, including hydrogen peroxide concentration (HPC), catalyst amount, nickel (Ni) doping initial PRM concentration, pH, are systematically studied to assess their impact on efficiency. The results reveal that both exhibit promising activity, with highest efficiency achieved at following reaction conditions: 6 mM HPC, 40 mg Ni(7%):ZnO catalyst, 10 ppm pH = 6. Under these conditions, demonstrated 98.08% compared 82.99% for catalyst. highlights potential efficient organic pollutant removal provides valuable insights into factors influencing performance.

Language: Английский

Citations

2