enhanced magnetic separation and photocatalytic activity of patent us4704139

Magnetic Fe3O4/ZnCr-layered double hydroxide composite with enhanced

During the whole construction process, the composite showed enhanced adsorption and photocatalytic activity. The adsorption capacity was up to 1.64 mmol/g, and around 95% of dyes were photodegraded in 3 h. Magnetic measurement shows that Fe 3 O 4 /ZnCr-LDH is magnetic with a saturation magnetization of 22.6 emu/g and a …

Facile fabrication of ternary MWCNTs/ZnO/Chitosan

Yang, Y. et al. Insights into the mechanism of enhanced photocatalytic dye degradation and antibacterial activity over ternary ZnO/ZnSe/MoSe2 photocatalysts under visible light irradiation. Appl ...

Ag2O modified magnetic BaFe12O19/C3N4 photocatalysts with enhanced

Based on above analysis, the possible mechanism of enhanced photocatalytic activity over 10%Ag 2 O-BaFe 12 O 19 /C 3 N 4 under visible light irradiation was expounded in Fig. 9. Firstly, the conduction and valence bands g-C 3 N 4 and Ag 2 O were excited under visible light irradiation, and the photoelectrons and holes …

Construction of a ternary g-C3N4/TiO2@polyaniline

The combination of two or more semiconductor materials for the synthesis of new hybrid photocatalyst could be a good approach to enhance the visible light absorption, electron-hole (e−/h+) pair ...

Magnetic Separable Bi2Fe4O9/Bi2MoO6 Heterojunctions in …

Abstract A magnetic Bi2Fe4O9/Bi2MoO6 heterojunction was synthesized by a facile one-pot solvothermal method, and the photodegradation performance was evaluated by degrading methylene blue () and tetracycline hydrochloride (TC). Compared with pure Bi2MoO6 composite, the Bi2Fe4O9/Bi2MoO6 heterojunction with …

Enhanced photocatalytic activity of magnetic core–shell Fe

Furthermore, a possible mechanism of the photocatalytic reaction was proposed. The results fully certificated magnetic core–shell Fe 3 O 4 @Bi 2 O 3 –RGO heterojunctions had outstanding photocatalytic activity, excellent cyclic stability, and convenient magnetic separation.

Enhanced photocatalytic hydrogen evolution by …

To verify the crucial role of piezopotential in promoting charge separation and photocatalysis, the photocatalytic H 2 evolution activities were performed under different rotation speed. As the above hydrogen production curves ( Fig. 7 c ) showed, the H 2 production of 20-MS/CSS at 500 rpm rotation speed (20-MS/CSS-500) was 145.3 …

Novel CaCO3/g-C3N4 composites with enhanced charge separation …

Radical trapping and electron spin resonance experiments show that hydroxyl radicals (OH) and holes (h +) are the key reactive species in the photocatalytic process. The enhanced photocatalytic activity of the composite is mainly attributed to the efficient separation rate of electron-hole pairs achieved through the incorporation of CaCO 3.

Enhanced magnetic separation and photocatalytic …

The photocatalytic activity was investigated with a recalcitrant phenolic compound namely 2,4-dichlorophenol (2,4-DCP) as a model pollutant under direct bright …

Highly hydrophilic and dispersed TiO2 nano-system with enhanced …

Titanium dioxide (TiO2)-based photodynamic antibacterial (PDA) agents present a novel approach for addressing drug-resistant bacterial infections and the associated tissue damage. However, the suboptimal dispersibility, negative charge, and weak photocatalytic activity under visible light of TiO2 hinder its practical applications. …

Graphene quantum dot modified Bi2WO6 with enhanced photocatalytic

The poor light-harvesting capability and fast charge recombination of Bi-based photocatalysts weaken their photocatalytic activity. In this study, graphene quantum dot (GQD) modified Bi 2 WO 6 (BWO) composites (GQDs/BWO) were prepared by a facile microwave-assisted hydrothermal method. GQDs/BWO exhibited an excellent …

Nanostructured materials based on g-C3N4 for enhanced photocatalytic

There has been a rapid advancement in the number of scientific papers and patents (Kumar and Devi, 2011) dealing with photocatalytic OWS process, CO 2 reduction, and pollutants degradations (Hernández-Alonso, 2009, Sohail, 2021, Hayat, 2022).Fig. 6 a shows that g-C 3 N 4 is a promising metal-free polymeric semiconductor …

Enhanced Photocatalytic CO2 Reduction Performance via …

Photocatalytic CO2 reduction with naturally abundant H2O as the proton source has attracted widespread concern for its environmental and sustainable advantages. Nevertheless, the high recombination rate of photogenerated electron–hole pairs leads to unsatisfactory solar-to-chemical energy conversion efficiency. In this work, we proposed …

Magnetic materials for photocatalytic applications—a review

Besides the straightforward magnetic separation of the material upon photoreaction completion, detailed photocatalytic experiments comparing the nonmagnetic and magnetic composite (TiO 2-G-NiFe 2 O 4 and TiO 2-G) showed that the magnetic photocatalyst presented a higher MC-LR degradation, which was attributed to the larger …

Enhanced magnetic property and photocatalytic activity of …

The N-doped Fe 2 O 3 /FeVO 4 (R N =0.75) heterojunction with the maximum content of α-Fe 2 O 3 (30.46%) shows the best photocatalytic activity under UV–light irradiation, which can efficiently catalyze the degradation of RhB up to 90% at 180 min. The obtained data are used to analyze the enhanced photocatalytic mechanism.

Flexoelectricity-induced enhancement in carrier separation and

In this paper, we have elucidated the role of flexoelectricity in the photoexcited carrier separation and photocatalysis enhancement by comparatively investigating the photocatalytic, flexocatalytic and flexo-photocatalytic activities of centrosymmetric Ag 2 MoO 4 photocatalyst for degrading methylene blue (). …

Fabrication of plate-on-plate Z-scheme SnS2/Bi2MoO6

The results indicated that the as-prepared SnS 2 /Bi 2 MoO 6 composites exhibited enhanced photocatalytic activities, in contrast to pure SnS 2 and Bi 2 MoO 6. The highest photocatalytic efficiency of the composites was obtained by optimizing the quantity of SnS 2. Finally, the active species generated during the photocatalytic …

Magnetic g-C3N4/NiFe2O4 composite with enhanced activity …

An efficient photocatalytic disinfection way to control Aspergillus flavus is demonstrated.. Z-schematic g-C 3 N 4 /NiFe 2 O 4 exhibits enhanced disinfection activities and recyclability. •OH and •O 2 − radicals play important roles in photocatalytic disinfection process.. Disinfection mechanism is attributed to cell damage and the leakage of …

V2C MXene–modified g-C3N4 for enhanced visible-light photocatalytic …

Therefore, we explored the photocatalytic activity of g-C 3 N 4 @V 2 C MXene photocatalyst and applied it to the photocatalytic degradation of MO. Herein, g-C 3 N 4 @V 2 C MXene photocatalyst was synthesized using a simple self-assembly mixing technique and tested for their photocatalytic degradation efficiency toward MO under …

Magnetic g-C3N4/NiFe2O4 hybrids with enhanced photocatalytic activity

Composite photocatalysts have attracted considerable attention in the exploration of both highly efficient and low cost materials. In this study, novel magnetic g-C 3 N 4 /NiFe 2 O 4 photocatalysts were fabricated by a facile chemisorption method. X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared spectroscopy (IR), …

Preparation and Enhanced Visible Light Photocatalytic Activity …

Preparation and Enhanced Visible Light Photocatalytic Activity of Magnetic Flower-like SDBS/BiOBr- Induced by SDBS: HUANG Guofu 1, LIU Kun 2, WANG Zhongkai 1, SONG Rongrong 1, ZHU Ying 1, TANG Rui 2, ZHANG Hanbing 1,2, TONG Zhangfa 2: 1 College of Resources, Environment and Materials, Guangxi University, Nanning 530004, …

Industry applications of magnetic separation based …

The magnetic core, with an average hydrodynamic size of 235.5 nm, allowed the magnetic nanoparticles (MNPs) rapid separation from solutions under an external …

Insight into the enhanced magnetic separation and photocatalytic

It could be concluded that the content of Sn dopant plays a key role in the enhancement of photocatalytic activity by the enhancement of the separation of photogenerated pairs or extension the response range of TiO 2 absorption spectrum. Tetracycline hydrochloride (TC), a typical antibiotic, is widely used in human and …

Bi2WO6–BiOCl heterostructure with enhanced photocatalytic activity …

Mechanism of the enhanced photocatalytic activity of Bi 2 WO 6 –BiOCl ... Peng, R., Li, J. & Duan, R. Effective photoinduced charge separation and photocatalytic activity of hierarchical ...

CoFe2O4/BiFeO3 Z-scheme heterojunction under rotating magnetic …

The cooperation of heterojunction and magnetic field can effectively improve the efficiency of photocatalytic degradation of pollutants. Herein, CoFe 2 O 4 /BiFeO 3 Z-scheme heterojunctions (CFO/BFO) were applied in the magnetic field-assisted photocatalytic reaction generated by a rotating permanent magnet for the degradation of berberine …

Magnetically separable Fe3O4@TiO2 nanospheres: …

In this paper, we combined mixed-solvent and solvothermal method for preparing Fe 3 O 4 @TiO 2 core–shell structured nanospheres featuring enhanced …

Magnetic g-C3N4/NiFe2O4 hybrids with enhanced …

During the catalytic reaction, the synergistic effect between g-C 3 N 4 and NiFe 2 O 4 can accelerate photogenerated charge separation and facilitate the photo …

A magnetically recyclable photocatalyst with …

Simple facile synthesis, easy separation by an external magnet, good reusability and high degradation capability of the catalyst may promote the practical …

Insight into the enhanced magnetic separation and photocatalytic

The photocatalytic activity of TiO2 is influenced by both the heat treatment temperature and the Sn doping concentration. 1% Sn–TiO2 exhibits the highest degradation rate at 350 °C and 5% Sn ...

Enhanced photocatalytic activity of CeO2 and magnetic

When magnetic biochar acts, the sudden and easy elimination of the catalyst from an aqueous solution by magnetic separation solves many problems that biochar addresses, thus improving the photocatalytic degradation performance and making it easy to recycle and reuse [42]. Organic contaminants in an aqueous solution …