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Spherical mesoporous iron oxide and preparation method thereof

An iron oxide and mesoporous technology, applied in the field of spherical mesoporous iron oxide and its preparation, can solve the problems of skeleton collapse, difficult preparation of spherical iron oxide, complex crystal phase behavior, etc., and achieves difficult to collapse, uniform size and large adsorption capacity Effect

Active Publication Date: 2016-05-25
海门市创豪工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the field of iron oxide research, there are many studies on granular iron oxide, but no reports on spherical mesoporous iron oxide.
In addition, iron oxide has complex crystal phase behavior, and the crystallization process is prone to skeleton collapse, so it is necessary to use suitable surfactants or other additives to enhance the toughness of its skeleton, which makes the preparation of spherical iron oxide difficult.

Method used

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  • Spherical mesoporous iron oxide and preparation method thereof
  • Spherical mesoporous iron oxide and preparation method thereof
  • Spherical mesoporous iron oxide and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032]Add 0.22 g of CTAB and 0.24 g of DDAB to 45 mL of deionized water at a temperature of 35 ° C and stir overnight, then add 0.71 mL of ammonia water with a volume ratio of 20% to the solution, and stir for 3 hours to obtain a mixed solution; 3 ·6H 2 O was added to the above mixed solution to make FeCl 3 ·6H 2 The mass ratio of O to other raw materials is FeCl 3 ·6H 2 O:CTAB:DDAB:NH 3 ·H 2 O=1:0.07:0.10:0.17, stirred for 24 hours to obtain a reddish-brown solution; after the above-mentioned reddish-brown solution was transferred to a reactor, it was placed in a thermostat at 90°C for a hydrothermal reaction for 24 hours; after the above-mentioned hydrothermal reaction The reddish-brown solution was suction-filtered, washed, dried, ground, and calcined at 400°C for 3 hours to obtain iron oxide powder.

[0033] Observation with transmission electron microscope and scanning electron microscope, such as figure 1 and figure 2 As shown, the spherical mesoporous iron oxid...

Embodiment 2

[0036] Add 0.22 g of CTAB and 0.24 g of DDAB to 45 mL of deionized water at a temperature of 35 ° C and stir overnight, then add 0.71 mL of ammonia water with a volume ratio of 25% to the solution, and stir for 3 hours to obtain a mixed solution; 3 ·6H 2 O was added to the above mixed solution to make FeCl 3 ·6H 2 The mass ratio of O to other raw materials is FeCl 3 ·6H 2 O:CTAB:DDAB:NH 3 ·H 2 O=1:0.07:0.10:0.17, stirred for 30 hours to obtain a reddish-brown solution; after the above-mentioned reddish-brown solution was transferred to a reactor, it was placed in a thermostat at 90°C for a hydrothermal reaction for 24 hours; after the above-mentioned hydrothermal reaction The reddish-brown solution was suction-filtered, washed, dried, ground, and calcined at 400°C for 3 hours to obtain iron oxide powder.

Embodiment 3

[0038] Add 0.22 g of CTAB and 0.24 g of DDAB to 45 mL of deionized water at a temperature of 35 ° C and stir overnight, then add 0.71 mL of ammonia water with a volume ratio of 21% to the solution, and stir for 3 hours to obtain a mixed solution; 3 ·6H 2 O was added to the above mixed solution to make FeCl 3 ·6H 2 The mass ratio of O to other raw materials is FeCl 3 ·6H 2 O:CTAB:DDAB:NH 3 ·H 2 O=1:0.07:0.10:0.17, stirred for 36 hours to obtain a reddish-brown solution; after the above-mentioned reddish-brown solution was transferred to a reactor, it was placed in a thermostat at 90°C for a hydrothermal reaction for 24 hours; after the above-mentioned hydrothermal reaction The reddish-brown solution was suction-filtered, washed, dried, ground, and calcined at 400°C for 3 hours to obtain iron oxide powder.

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Abstract

The invention discloses a spherical mesoporous iron oxide and a preparation method thereof. The method comprises the following steps: adding certain amounts of CTAB and DDAB to water, dissolving the CTAB and the DDAB, adding a small amount of ammonia water, stirring, adding FeCl3.6H2O, continuously stirring to obtain a solution with a reddish brown precipitate, transferring the solution to a reaction kettle, placing the reaction kettle in a thermotank, carrying out a hydrothermal reaction, centrifuging the obtained product, washing the centrifuged product, drying the washed product, grinding the dried product, and calcining the ground product to obtain the mesoporous spherical iron oxide. The spherical mesoporous iron oxide with the surface having uniformly-distributed mesopores and with the inside being honeycomb is obtained by using a monocationic / dicationic surfactant as a composite template, the aperture is about 2-4nm, and the particle size is 200-250nm. The mesoporous spherical iron oxide prepared through the method has large adsorption ability to arsenic ions, lead ions and other ions, so the mesoporous spherical iron oxide is of great practical significance to develop efficient arsenic and lead removal adsorption materials.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a spherical mesoporous iron oxide and a preparation method thereof. Background technique [0002] Nano-iron oxide has good weather resistance, light resistance, magnetism and good absorption and shielding effect on ultraviolet rays, and can be widely used in flash coatings, inks, plastics, leather, automotive topcoats, catalysts, and biomedical processes. Understanding and mastering various preparation methods of nano-iron oxide is undoubtedly of great practical significance. [0003] In recent years, the preparation of nano-iron oxide has made great progress, and the research on the morphology of nano-iron oxide has become the focus of attention. For example, the Chinese patent application publication number CN103754956A (application number 201310744725.7) discloses a hydrothermal synthesis method of nanometer iron oxide with controllable morphology. The...

Claims

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Application Information

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IPC IPC(8): C01G49/06B82Y30/00
CPCC01G49/06C01P2002/72C01P2004/03C01P2004/04C01P2004/32C01P2004/62
Inventor 周国伟史雪李秀艳
Owner 海门市创豪工业设计有限公司
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