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Preparation method of reduced molybdenum oxide quantum dot material

A technology of quantum dot material and molybdenum oxide, which is applied in molybdenum oxide/molybdenum hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem that the synthesis method of molybdenum oxide quantum dot material has not been realized, and achieve Strong near-infrared absorption ability, low reaction temperature, and uniform shape

Active Publication Date: 2016-08-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, the synthesis method of molybdenum oxide quantum dot materials has not been realized

Method used

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  • Preparation method of reduced molybdenum oxide quantum dot material
  • Preparation method of reduced molybdenum oxide quantum dot material
  • Preparation method of reduced molybdenum oxide quantum dot material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The amount of reducing agent is 0.5g chitosan in the present example, and concrete preparation steps are as follows:

[0030] Add 10ml of 30% hydrogen peroxide to a 100ml hydrothermal reaction kettle, add 1g of molybdenum powder under magnetic stirring until all are mixed and dissolved, then add 30ml of a solution containing 0.5g of chitosan, and then crystallize at 80°C for 12 hours. After cooling to room temperature, the sample was alternately washed with deionized water and absolute ethanol, centrifuged, and vacuum-dried to obtain a powder sample. Such as figure 2 As shown, the sample prepared in this embodiment is Mo with a diameter of about 2.2nm 13 o 33 quantum dots.

Embodiment 2

[0032] The amount of reducing agent is 2g chitosan in the present example, and concrete preparation steps are as follows:

[0033] Add 10ml of 30% hydrogen peroxide to a 100ml hydrothermal reaction kettle, add 1g of molybdenum powder under magnetic stirring until all are mixed and dissolved, then add 30ml of a solution containing 2g of chitosan, and then crystallize at 80°C for 12 hours. After cooling to room temperature, the sample was alternately washed with deionized water and absolute ethanol, centrifuged, and vacuum-dried to obtain a powder sample. Such as image 3 As shown, the sample prepared in this embodiment is Mo with a diameter of about 3nm 13 o 33 quantum dots.

Embodiment 3

[0035] The amount of reducing agent is 5g chitosan in the present example, and concrete preparation steps are as follows:

[0036] Add 10ml of 30% hydrogen peroxide to a 100ml hydrothermal reaction kettle, add 1g of molybdenum powder under magnetic stirring until all are mixed and dissolved, then add 30ml of a solution containing 5g of chitosan, and then crystallize at 80°C for 12 hours. After cooling to room temperature, the sample was alternately washed with deionized water and absolute ethanol, centrifuged, and vacuum-dried to obtain a powder sample. Such as Figure 4 As shown, the sample prepared in this embodiment is Mo with a diameter of about 2nm 13 o 33 quantum dots.

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Abstract

The invention discloses a preparation method of a reduced molybdenum oxide quantum dot material.The method particularly comprises the following steps that 1 g-3 g of metal molybdenum powder is dissolved in 10 ml of 30% hydrogen peroxide, under magnetic stirring, mixing is conducted till the powder is completely dissolved, 0.5 g-5 g of reducing agent is added, a crystallization reaction is conducted at 60 DEG C to 160 DEG C in a reaction kettle for 6 h to 48 h, after the reaction is finished, powder samples are centrifuged, washed and vacuum-dried, and the powder samples are obtained.According to the preparation method of the reduced molybdenum oxide quantum dot material, mixed valence state molybdenum oxide quantum dots are uniform in morphology, the size is smaller than 5 nm, and the excellent and stable near infrared absorption performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and relates to a preparation method of an inorganic oxide material, in particular to a preparation method of a reduced molybdenum oxide quantum dot material. Background technique [0002] Molybdenum oxide has a two-dimensional layered structure and a stable interlayer framework, and there are extensive channels, which provide ion circulation channels and insertion sites. The crystal structure of molybdenum oxide and its hydrates are both H + , Li + and other ions are good ion implantation hosts. This excellent property makes it have broad application prospects in the fields of information display and storage, catalysts, sensors, etc., such as electrochromic, smoke suppression-flame retardant, catalytic degradation, and gas-sensing properties. Recent studies have found that if the chemical valence state of molybdenum oxide can be controlled to be rich in low-valence molybdenum ions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/02B82Y30/00
CPCB82Y30/00C01G39/02C01P2002/72C01P2004/04C01P2004/64
Inventor 果崇申刘绍琴丁丹丹
Owner HARBIN INST OF TECH
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