High-efficiency separation and transfer of photo
Combining Lorentz force and build-in electric potential to boost charge separation and transfer for powder photocatalysts. • The photocatalytic efficiency of rGO/TiO 2 nanobelts heterostructure in magnetic field can be improved by 107%.. Provide a new idea to boost photocatalytic activity based on external magnetic field and …
Internal magnetic-field-enhanced photogenerated charge …
Internal magnetic-field-enhanced photogenerated charge separation in ferromagnetic TiO 2 surface heterojunctions [J]. J. Mater. Sci. Technol., 2023, 160: 240-247. share …
Insight into the enhanced magnetic separation and …
Request PDF | Insight into the enhanced magnetic separation and photocatalytic activity of Sn-doped TiO2 core-shell photocatalyst | Much attention has been focused on the synthesis of TiO2 based ...
Charge-switchable magnetic separation and …
Growing concerns about the potential health effects of nanoscale titanium dioxide (TiO 2 ) have necessitated the need for monitoring the size distribution and physicochemical properties of food additive TiO 2 that are present in commercial food. ... Charge-switchable magnetic separation and characterization of food additive titanium …
A New Technique for Preparation of High-Grade Titanium …
The small iron particles embedded in the slag could be removed by fine grinding and magnetic separation process. The grade of TiO2 in the obtained high-grade titanium slag reached 60.68% and the total recovery of TiO2 was 91.25%, which could be directly applied for producing titanium white by the sulfuric acid process.
Individual enrichment of titanium and iron from low …
Reduction roasting-magnetic separation realizes the separation of titanium and iron in high-titanium beach titanomagnetite. However, the TiO 2 grade in titanium concentrate is low, and few studies have investigated low-titanium beach titanomagnetite. The preconcentration-reduction roasting and magnetic separation process was …
Separations | Free Full-Text | Separation of Ilmenite from …
Here, the separation of ilmenite from VTM ore is studied by combining magnetic separation and flotation technologies. In particular, the floatability of mixed MOH/PG-1 collectors is thoroughly investigated. The results show that a concentrate with a TiO2 grade of 9.90% can be separated via weak magnetic separation and coarse particle tailing ...
Preparation of a new green magnetic Fe3O4 @TiO2-P25 …
A novel green method has been investigated to obtain a magnetic recoverable photocatalyst. Fe 3 O 4 particles formed in situ by aerial oxidative precipitation of aqueous Fe(II) in the presence of terephthalate were bonded to TiO 2-P25 nanoparticles, giving rise to a coupled semiconductor heterostructure with superparamagnetic behavior …
Photo-Fenton degradation of amoxicillin via magnetic TiO
In an effort to separate suspended TiO 2-GO-Fe 3 O 4 from wastewater, we designed a submerged magnetic separation membrane photocatalytic reactor (SMSMPR) and, for the first time, combined this reactor with the TiO 2-GO-Fe 3 O 4 magnetic catalyst. The ceramic membranes used in the SMSMPR can be effectively used for the …
Enhanced catalytic degradation of amoxicillin …
A novel photo-Fenton catalytic system for the removal of organic pollutants was presented, including the use of photo-Fenton process and a submerged magnetic separation membrane …
Preparation and characterization of magnetic TiO2 …
All solids presented type IV adsorption isotherms (not shown), characteristic of non-porous materials. BET surface area of nanosized magnetic iron oxide and Degussa P25 TiO 2 were found to be 42 and 47 m 2 /g, respectively, which are close to the values given by the suppliers (49 and 53 m 2 /g). TiO 2 /Fe 3 O 4 and TiO 2 /SiO 2 /Fe 3 O 4 …
Charge-switchable magnetic separation and
Preparation of PL@SMBs for magnetic separation of food additive TiO 2 from food. Starch magnetic beads (SMBs) were synthesized through co-crystallization of iron oxide nanoparticles (IONPs) and short-chain glucan (SCG) obtained by enzymatic hydrolysis of waxy maize starch using pullulanase (Fig. 1A) (Luo et al., 2018a).
Photocatalytic performance and magnetic separation of TiO2
Fe/TiO 2 also has the highest saturation magnetization (61.5 emu/g), which is beneficial for magnetic separation. The adsorption efficiencies, degradation efficiencies, apparent reaction rate constants, and saturation magnetizations of the Fe@Fe 2 O 3 @TiO 2 catalysts are sensitive to the properties of the Fe 2 O 3 intermediate layer.
Enhancing Reduction Separation and Efficient Recovery of
Overall, the metallization reduction–magnetic separation process with diboron trioxide and calcium fluoride as composite additives has achieved excellent metallization ratio, satisfied separation and recovery of valuable components, and large-scale lowered reaction temperature and time. ... However, at 1050 °C, part of TiO 2 …
Efficient oil-water separation with amphipathic magnetic …
Recently, oil-water separation materials with special wettability surfaces have attracted intense attention. In this work, amphiphilic magnetic nanoparticles of Fe3O4@TiO2 are prepared by the ...
Co-doped magnetic N-TiO2-x/rGO …
Titanium dioxide (TiO 2) ... (TGNF) photocatalyst, which exhibits magnetic property for convenient separation from water body. The immobilization of nano-photocatalysts onto a reliable floating substrate is a practical method that offers flexibility and self-separation for a wastewater treatment system. More noteworthy, such design …
Preparation of Fe3O4/TiO2 magnetic photocatalyst for …
In this study, Fe3O4 magnetic nanoparticles were prepared from FeCl2/FeCl3 and NaOH solution by chemical co-precipitation method in an impinging stream-rotating packed bed. Then, Fe3O4/TiO2 photocatalyst was prepared for photocatalytic degradation of phenol by sol–gel method using butyl titanate and Fe3O4 …
Liquid-phase deposition of TiO2 nanoparticles on …
The magnetic TiO 2 composites show high photocatalytic performance and can be recycled five times by magnetic separation without major loss of activity, which …
Insight into the enhanced magnetic separation and photocatalytic
Much attention has been focused on the synthesis of TiO 2 based materials as photocatalysts for water pollutant treatment, it still needs overcome difficulties of separation of TiO 2 photocatalyst from the treated water and the recombination of photo-induced carriers to improve catalytic activities.In this paper, a magnetical core-shell Fe 3 O 4 …
Magnetic Fe2O3/mesoporous black TiO2 hollow sphere
The solar-light-harvesting and separation of nanostructured photocatalysts in slurry systems are key issues in fields of photocatalysis. Herein, magnetic Fe 2 O 3 /mesoporous black TiO 2 hollow sphere heterojunctions (M-Fe 2 O 3 /b-TiO 2) are fabricated through wet-impregnation and surface hydrogenation strategy, which show …
A Novel Process for Titanium Sand by Magnetic Separation …
This novel process achieved an effective processing of the sand and obtained a high-grade ilmenite concentrate assaying 46.30% TiO2 with a high recovery of 57.88%, and a by-product of ...
Magnetically separable Fe3O4@TiO2 nanospheres: …
Teng Yuan, Feng Wang, Jianqing Hu & Weiping Tu. 878 Accesses. 10 Citations. Explore all metrics. Abstract. A facile and efficient approach for the fabrication …
High-Titanium Slag Preparation Process by Carbothermic
The morphology of the titanium slag before and after the wet-magnetic separation process is shown in Figure 13. The particle size of the titanium slag after wet-magnetic separation was smaller than that before wet-magnetic separation, which is due to further decrease in particle size caused by grinding in water during wet-magnetic …
Recyclable magnetic nanoparticles combined with TiO2 …
In the presence of an external magnetic field, they can carry out the separation of reaction substrates quickly [17]. Besides, to achieve enrichment of phosphate groups, we have introduced TiO 2 because the nature of the chelating force can be formed between TiO 2 and phosphate diphosphate [18], [19], [20].
Insight into the enhanced magnetic separation and …
Magnetic Sn-doped TiO 2 core-shell photocatalyst is successful synthesized by Stöber and sol-gel methods. • FST-S can be quickly separated from aqueous solution by a magnet. • The degradation rate constant of the FST-S is 3.86 …
Magnetically separable Fe3O4@TiO2 nanospheres: …
The Fe 3 O 4 @TiO 2 nanospheres photocatalysts has exhibit superior photoactivities and fast magnetic separation. The enhanced photocatalytic activity, excellent chemical stability, and fast magnetic separation make the magnetic photocatalysts have potentially application in environmental remediation.
Enhanced catalytic degradation of amoxicillin with TiO2 …
A novel photo-Fenton catalytic system for the removal of organic pollutants was presented, including the use of photo-Fenton process and a submerged magnetic separation membrane photocatalytic reactor (SMSMPR). We synthesized TiO2-Fe3O4 composites as the photocatalys …
Efficient oil-water separation with amphipathic magnetic …
The oil removal performance with magnetic nanoparticles Fe 3 O 4 @TiO 2 is evaluated by a handheld oil meter after rotating at 250 rpm for a certain time. Results show that the prepared material has the best oil-water separation performance and maintains high magnetism when the weight ratio of TiO 2 is 80%. When the dosage is …
Study on the mineral characteristics and separation …
A low-TiO 2 ilmenite (ilmenite-M) was separated from the vanadium–titanium magnetite ore in Panzhihua, and its chemical composition and separation behaviors were investigated compared to common ilmenite. The chemical composition and structure analysis indicated that ilmenite-M had 43.53% TiO 2 but a high Fe content and two types …
Internal magnetic-field-enhanced photogenerated charge separation …
@article{Wang2023InternalMP, title={Internal magnetic-field-enhanced photogenerated charge separation in ferromagnetic TiO2 surface heterojunctions between {001} and {101} facets}, author={Guojing Wang and Shirong Xiong and Yonghui Chen and Chunchang Wang and Shasha Lv and Ke Jun Jia and Yunjie Xiang and Jianbo Liu and …
