Teng Yuan, Feng Wang, Jianqing Hu & Weiping Tu. 878 Accesses. 10 Citations. Explore all metrics. Abstract. A facile and efficient approach for the fabrication …

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 …

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 …

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.

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 ...

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 …

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 …

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).

Considering adsorption and magnetic separation performances, the optimal molar ratio of Fe 3 O 4 to TiO 2 * is 0.02 to prepare TiO 2 */Fe 3 O 4 composite. When preparing the TiO 2 */Fe 3 O 4 composite, except that 0.1307 g of nano-Fe 3 O 4 was ultrasonically dispersed in 40 mL of absolute ethanol before adding C 16 H 36 O 4 Ti, the …

Ballast water has a negative impact on marine environment; the existing combined ultraviolet (UV) filtration system that for treating ballast water has relatively low effective rate and instability in inactivating microorganisms. In this study, the established high gradient magnetic separation-ultraviolet photocatalysis (HGMS-UV/TiO2) system …

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 …

We combined an SMSMPR with the magnetic TiO 2 –Fe 3 O 4 catalyst. The prepared TiO 2 –Fe 3 O 4 composites showed high photo-Fenton catalytic activity for degradation of AMX. Cycle experiments demonstrate that the combination of backwashing treatment with magnetic separation could enhance the stability and reusability of the …

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].

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 …

Fe is thought to capture electrons that are photo-generated in TiO 2. This promotes the separation of photo-generated electrons and holes, so is responsible for the highest photocatalytic performance. Fe/TiO 2 has the highest saturation magnetization (61.5 emu/g), which is beneficial for magnetic separation. (3)

The magnetic TiO 2 composites show high photocatalytic performance and can be recycled five times by magnetic separation without major loss of activity, which …

TiO 2 nanoparticles were separated from water by magnetically seeded filtration and sedimentation.. Heteroaggregation of the TiO 2 nanoparticles and the magnetic Fe-C-COOH nanoseeds is a key factor.. The magnetic separation is tuned by changing pH and the particle concentration in water. • Magnetic filtration is a more …

The assembled TiO 2 -based magnetic catalysts inherited the features of both magnetic components and TiO 2 nanostructures, generating high photocatalytic activity and improving separation capability.

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 ...

Internal magnetic-field-enhanced photogenerated charge separation in ferromagnetic TiO2 surface heterojunctions between {001} and {101} facets | Semantic Scholar. DOI: …

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 …

In this study, the established high gradient magnetic separation-ultraviolet photocatalysis (HGMS-UV/TiO 2) system was taken, the back propagation (BP) neural …

The dynamics of magnetic separation of TiO2 nanoparticles (25 nm) from water by adding composite magnetic Fe-C-COOH nanoparticles (15 nm) and …

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 ...

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 …

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 …

Wakasa et al. initially studied the photocatalytic reaction of magnetic ultrafine TiO 2. ... On the contrary, the magnetic field can inhibit the separation of photo-generated carriers for the other part. Therefore, the two effects may be canceled out each other. In order to solve these problems, we first proposed the idea of constructing a dual ...

The amorphous TiO 2 shell is the photocatalyst for the degradation and mineralization of the organics, bisphenol A and dibutyl phthalate, under UV illumination, and the magnetism associated with the 9 nm crystalline Fe 3 O 4 core allows for the magnetic separation from the dispersion once photocatalytic degradation is complete. An …

The removal both target TiO 2 particles and Fe-based magnetic flocculant particles were controlled from their residual concentration in water in the course of magnetic separation process. The understanding of the heteroaggregation effect on sedimentation dynamics will help to elaborate practical recommendations on the use of …

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.

In this study, the established high gradient magnetic separation-ultraviolet photocatalysis (HGMS-UV/TiO 2) system was taken, the back propagation (BP) neural network and TracePro was used to simulate and analyse the UV field intensity in the system for optimizing. Further experimental verification was carried out with seawater sample to ...

The use of the internal magnetic field of ferromagnets can effectively promote charge separation and transfer (CST) in photoelectrochemical energy conversion. However, photoelectrochemical materials with a ferromagnetic field are scarce, and the internal magnetic field is negligible in nonferromagnetic materials. ... The photocatalytic …