Controllable synthesis of nanorod/nanodisk TiO2 from titanium-containing electric furnace molten slag

Que, Zaiqing; Li, Yang; Yu, Haiyang; Zheng, Feng; Zhang, Mei; Guo, Min

doi:10.1007/s12598-013-0129-7

Cited by 7 publications

(6 citation statements)

References 17 publications

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“…In order to make full use of valuable elements existed in Ti-bearing EAF slag, a novel process based on alkali fusion-water leachingacidolysis process has been proposed by our group. [19][20][21] During the alkali fusion process, the elements existed in Ti-bearing EAF slag were converted to their corresponding sodium salts. Then the alkaline solution containing sodium aluminate and sodium silicate were obtained in the water leaching process, which was an ideal precursor to prepare NaA zeolite.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Peng

Man

et al. 2016

RSC Adv.

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Ti-bearing electric arc furnace slag (Ti-bearing EAF slag) is the main solid waste generated in the direct reduction iron making process. During the extraction process of Ti from Ti-bearing EAF slag, a byproduct containing abundant Si and Al was seldom utilized, thus leading to waste of valuable elements and secondary pollution. In this paper, NaA zeolite (6Na 2 O$6Al 2 O 3 $12SiO 2 ) and sodalite (SOD, 4Na 2 O$3Al 2 O 3 $6SiO 2 ) were synthesized successfully using the by-product as a precursor. The effects of the SiO 2 /Al 2 O 3 molar ratio (n(SiO 2 )/n(Al 2 O 3 )), H 2 O/Na 2 O molar ratio (n(H 2 O)/n(Na 2 O)), hydrothermal temperature and time on the crystal phase and microstructure of the prepared zeolites were systematically investigated. The results indicated that NaA zeolite with good crystallinity and cubic morphology was obtained at 140 C for 3 h with n(SiO 2 )/n(Al 2 O 3 ) and n(H 2 O)/n(Na 2 O) fixed at 2.0 : 1 and 100 : 1, respectively. Decreasing n(H 2 O)/n(Na 2 O), raising the hydrothermal temperature and prolonging the hydrothermal time were beneficial for the formation of spherical SOD zeolite. The phase transformation between NaA and SOD zeolite was discussed and a mechanism was proposed to explain the phenomenon of these zeolites coexisting in the obtained samples. In addition, the removal performances of Cu 2+ in aqueous solutions using zeolites synthesized at different temperatures were studied. The maximum removal capacity of the prepared zeolite can reach 1.346 mmol g À1 for 180 min.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Peng

Man

et al. 2016

RSC Adv.

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“…Moreover, the Cl À ions preferred to adsorb on the (110) plane of the TiO 2 crystal. [42] Consequently, these Cl À ions have a greater ability to ensure that TiO 2 crystal does not grow radially but takes the [001] direction as its preferred direction of growth to achieve TiO 2 nanorods. [43] Besides that, the affinity of NO 3…”

Section: Discussion Of the Formation Mechanismmentioning

confidence: 99%

Metal‐Organic Framework Derived Terephthalate Ligand Decorated TiO₂ with Various Morphologies for Efficient Photocatalytic H₂ Evolution

Dong

Gao

et al. 2023

Chemistry A European J

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It has been rarely reported the morphological control of derivatives of metal‐organic frameworks (MOFs) in hydrothermal conditions for photocatalytic applications. We report here a family of highly efficient composite photocatalysts composed of terephthalic acid/terephthalate (TPA) ligand and TiO2 with various morphologies (e. g., nanoparticles, nanosheets, and nanorods). The composites are synthesized by a simple one‐step hydrothermal method in various solvents (i. e., H2O, HF, H2SO4, HCl, and HNO3) using Ti‐based MOF (MIL‐125(Ti)) as precursor. The formation mechanism of composite materials with different morphological features is discussed. Impressively, the composite of TiO2 nanoparticles/TPA synthesized using H2O as solvent under hydrothermal condition exhibits the highest photocatalytic H2 activity among the studied materials, with a photocatalytic H2 production rate of 6.38 mmol g−1 h−1, which is approximately 7.5‐fold higher than pure TiO2 (Degussa, P25) and prominent apparent quantum efficiency (AQE) of 65 % at 365 nm. Furthermore, the mechanism of boosted photocatalytic H2 production is discussed.

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“…According to our previous works Que et al, 2015), it is known that that the Ti-bearing phases of the slag are anosovite solid solution (MgTi 2 O 5 or Ti 3 O 5 etc.) and Mg 2 TiO 4 , while the main impurity phases are MgAl 2 O 4 and amorphous metasilicate.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of TiO 2 visible light catalysts with controllable crystalline phase and morphology from Ti-bearing electric arc furnace molten slag

Liu

Guo

et al. 2016

Journal of Environmental Sciences

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Controllable synthesis of nanorod/nanodisk TiO2 from titanium-containing electric furnace molten slag

Cited by 7 publications

References 17 publications

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Metal‐Organic Framework Derived Terephthalate Ligand Decorated TiO₂ with Various Morphologies for Efficient Photocatalytic H₂ Evolution

Synthesis of TiO 2 visible light catalysts with controllable crystalline phase and morphology from Ti-bearing electric arc furnace molten slag

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Controllable synthesis of nanorod/nanodisk TiO2 from titanium-containing electric furnace molten slag

Cited by 7 publications

References 17 publications

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

Metal‐Organic Framework Derived Terephthalate Ligand Decorated TiO2 with Various Morphologies for Efficient Photocatalytic H2 Evolution

Synthesis of TiO 2 visible light catalysts with controllable crystalline phase and morphology from Ti-bearing electric arc furnace molten slag

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Metal‐Organic Framework Derived Terephthalate Ligand Decorated TiO₂ with Various Morphologies for Efficient Photocatalytic H₂ Evolution