Copper sulfide microtube in special shape and preparation method and application thereof

A copper sulfide and micro-tube technology, applied in copper sulfide and other directions, can solve the problems of increased preparation cost, human and environmental hazards, and difficult to control the appearance, and achieve the effects of favorable catalytic performance, stable performance and high crystallinity.

Inactive Publication Date: 2016-02-03
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, there are reports on the preparation of copper sulfide nanomaterials by microwave solvothermal method, ultrasonic wave, polymer template method, etc., but special equipment (such as microwave hydrothermal reactor, ultrasonic equipment) is required, which increases the preparation cost; some need to use Organic substances or organic solvents (such as ethylene glycol, ethylenediamine, aliphatic mercaptans, dimethyl sulfoxide, etc.) are harmful to humans and the environment; some have a long reaction time and the shape is not easy to control

Method used

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  • Copper sulfide microtube in special shape and preparation method and application thereof
  • Copper sulfide microtube in special shape and preparation method and application thereof
  • Copper sulfide microtube in special shape and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 0.1705gCuCl 2 2H 2 O was dissolved in 40 mL of double-distilled water to obtain solution A; 0.09 g of thioacetamide (TAA) and 0.04 g of NaOH were dissolved in 30 mL of double-distilled water to obtain solution B; the above solutions A and B were mixed under stirring, slowly Add 4mL PEG400 dropwise, the pH of the solution is 8.5, stir for 30min, transfer to a 100mL reactor, and react at 160°C for 6h; cool the reactor to room temperature, filter, wash three times with twice distilled water and ethanol, and dry at a constant temperature of 60°C Dry in the oven for 36 hours to obtain black copper sulfide microtube powder. Its X-ray diffraction pattern is as figure 1 (a), compared with the crystal standard card (JCPDS06-0464), it can be determined as a hexagonal crystal phase. The copper sulfide microtube has a diameter of 480-490nm and a length of 10μm.

Embodiment 2

[0045] The method for preparing CuS microtubes as described in Example 1, the difference is that the added TAA and NaOH are 0.083g and 0.043g respectively, the pH of the solution is 8.3; the amount of PEG400 is 3.5mL; react in a 150°C reactor 7h, CuS microtubes were prepared in a hexagonal crystal phase, with a diameter of 490-500 nm and a length of 9 μm.

[0046] The CuS microtubes prepared in Example 2 have an apparent reaction rate constant k=0.00836 / min for photocatalytic degradation of Rhodamine B; and an apparent reaction rate constant k=0.01013 / min for photocatalytic degradation of methyl orange.

Embodiment 3

[0048] The method for preparing CuS microtubes as described in Example 1, the difference is that the added TAA and NaOH are 0.09g and 0.048g respectively, the pH of the solution is 8.8; the amount of PEG400 is 4.5mL; react in a 170°C reactor 5h, the prepared CuS microtubes are in the hexagonal crystal phase, with a diameter of 485-495 nm and a length of 8 μm.

[0049] The CuS microtubes prepared in Example 2 have an apparent reaction rate constant k=0.00919 / min for photocatalytic degradation of rhodamine B; and an apparent reaction rate constant k=0.01009 / min for photocatalytic degradation of methyl orange.

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Abstract

The invention provides a copper sulfide microtube in a special shape and a preparation method and application thereof. The copper sulfide microtube is in a hexagonal phase, the diameter is 480 to 500 nm, and the length is 8 to 10 mum; the inner wall of the copper sulfide microtube is smooth, and the outer surface of the copper sulfide microtube is rough. According to the copper sulfide microtube, a hydrothermal method is adopted, thioacetamide reacts with copper chloride in the condition that a pH value is 8 to 9, and polyethylene glycol 400 (PEG400) as a guiding agent is added, so as to control the shape of a product. The copper sulfide microtube is used for photocatalytic degradation of rhodamine B and methyl orange dye. The copper sulfide microtube in the special shape and the preparation method and application thereof have the advantages of simple processing steps, environmentally friendliness, low cost, and easiness in operation, and the obtained copper sulfide microtube in the special shape has good effect on photocatalysis.

Description

technical field [0001] The invention relates to a copper sulfide microtube with a special shape, a preparation method and application thereof, and belongs to the field of micron material preparation. Background technique [0002] Copper sulfide is an important transition metal sulfide, which belongs to P-type semiconductor, and its band gap at room temperature is ~2.0eV. Due to the unique quantum size effect, surface effect and dielectric confinement effect, micron-scale / nano-scale copper sulfide exhibits novel physical and chemical properties. It is used in luminescent materials, gas sensor materials, antibacterial materials, photocatalytic materials and other fields have broad application prospects. Existing preparation technologies include hydrothermal method, solvothermal method, microwave solvothermal method, ultrasonic-chemical precipitation method, microemulsion method, etc. to prepare micro / nano copper sulfide with various morphology characteristics. For example, C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12
CPCC01G3/12C01P2002/72C01P2004/03C01P2004/62
Inventor 景志红耿小红由绪岩田梦王倩
Owner QUFU NORMAL UNIV
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