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A nanocomposite material based on CE-based amorphous alloy, its preparation method and its application in the treatment of dye wastewater

A technology of nanocomposite materials and amorphous alloys, applied in nanocomposite materials based on Ce-based amorphous alloys and its preparation, and in the application field of dye wastewater treatment, which can solve the problems of unclear reaction mechanism and low TOC removal rate, etc. Achieve the effect of good dispersion, simple reaction method and high decolorization rate

Active Publication Date: 2022-03-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems to be explored about the dark reaction thermal catalysis, such as the reaction mechanism is not yet clear, the removal rate of TOC is generally low, etc.

Method used

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  • A nanocomposite material based on CE-based amorphous alloy, its preparation method and its application in the treatment of dye wastewater
  • A nanocomposite material based on CE-based amorphous alloy, its preparation method and its application in the treatment of dye wastewater
  • A nanocomposite material based on CE-based amorphous alloy, its preparation method and its application in the treatment of dye wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, based on Ce 50 Al 10 Cu 40 Nanocomposites of Amorphous Alloys

[0033]In this example, Ce 50 Al 10 Cu 40 Amorphous alloy strips are used as raw materials to prepare nanocomposites. The specific steps are as follows:

[0034] (1) At room temperature, weigh about 0.4g of Ce 50 Al 10 Cu 40 Place the amorphous alloy strip in a container, then add 20mL of dilute HCl (1M), and react until no bubbles emerge (black CuO is generated in this step);

[0035] (2) Under the condition of magnetic stirring at 200rpm, add 1.5M NaOH solution dropwise to the container until the pH is 8.5 to form a suspension;

[0036] (3) Transfer the suspension into a 50mL reaction kettle lined with polytetrafluoroethylene, and keep it warm at 100°C for 12 hours; after the reaction is completed, cool it down to room temperature naturally, centrifuge the product at 15,000 rpm for 5 minutes, and wash the precipitate with water and alcohol respectively. 4 times each, and dried at 60...

Embodiment 2

[0046] Embodiment 2, the contrast of nanocomposite material obtained by different sedimentation pH

[0047] The present embodiment presses the same method of embodiment 1, with Ce 50 Al 10 Cu 40 Amorphous alloy strips are used as raw materials to prepare nanocomposites, the only difference being that in step (2), the pH adjusted by adding NaOH solution is different.

[0048] The nanocomposites obtained under different sedimentation pH conditions were used to degrade Orange II in the same manner as in Example 1.

[0049] Figure 5 It is the curve graph of the nanocomposite degradation orange II obtained under different sedimentation pH conditions, Image 6 The fitted reaction kinetic curve (ln(C 0 / C t )=kt) graph. from Figure 5 with Image 6 Visible, decolorization rate and reaction kinetics constant k change less obviously in the scope of pH8.0-10.5 (the decolorization rate after 2 minutes has good linear relationship with reaction kinetics k, therefore, the present...

Embodiment 3

[0050] Embodiment 3, the contrast of nanocomposite material obtained by different amorphous alloy raw materials

[0051] In this embodiment, the nanocomposite material is prepared according to the same method as in Example 1, the only difference is that the raw materials used are respectively changed to Ce 60 Al 10 Cu 30 、Ce 70 Al 10 Cu 20 、Ce 70 Cu 30 The amorphous alloy strips and the corresponding obtained nanocomposites are marked as C2, C3, and C4, respectively.

[0052] By the same method as in Example 1, each sample was used to degrade Orange II. Figure 7 It is the graph of the degradation of Orange II for each sample (including C1). It can be seen from the figure that compared with C1, C2 and C3, the decolorization speeds of the three materials are not much different, but by the treatment of Ce 70 Cu 30 The decolorization speed of the product C4 obtained by MG to Orange II is obviously not as good as that of the first three, and the decolorization rate in t...

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Abstract

The invention discloses a nano-composite material based on Ce-based amorphous alloy and its preparation method and its application in treating dye wastewater. After reacting Ce-based amorphous alloy with dilute acid, adding alkali to settle to obtain suspension, Then, the suspension was subjected to hydrothermal treatment to obtain a nanocomposite material based on Ce-based amorphous alloy. The nanocomposite material of the present invention can be in dark normal temperature and pressure, and do not add any chemicals (H 2 o 2 , PS / PMS or O 3 ) and energy, it has a high removal rate for dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a nanocomposite material based on a Ce-based amorphous alloy, a preparation method thereof, and an application in treating dye wastewater. Background technique [0002] Amorphous alloys, also known as metallic glasses (MG), have been extensively studied in recent years for the catalytic degradation of azo dyes. For example: Fe reported by L.C. Zhang research group 78 Si 9 B 13 and Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 Amorphous alloys, as light-enhanced Fenton-based catalysts, exhibited excellent catalytic activity and cycle stability in the degradation of azo dye wastewater; Wang Qianqian of Baolong Shen's research group reported Fe 80 P 13 C 7 The efficient decolorization rate of amorphous alloy to methylene blue is better than that of Fe 78 Si 9 B 13 ; Jian Lv research group found that Fe 83 Si 2 B 11 P 3 C 1 The glass ribbon has outstanding efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83B01J37/10B01J37/06B82Y30/00B82Y40/00C02F1/72C02F1/30C02F101/30
CPCB01J23/83B01J37/10B01J37/06C02F1/725C02F1/30C02F2101/308C02F2305/10B01J35/39
Inventor 张博宋敬敬张发宝胡青卓李冬冬蒋伟
Owner HEFEI UNIV OF TECH
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