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Sulfur-copper-tin-zinc hollow-structure microsphere and preparation method and application thereof

A technology of sulfur copper tin zinc and hollow structure is applied in the field of materials, which can solve the problems of excessively wide band gap and low efficiency, and achieve the effect of large specific surface area.

Inactive Publication Date: 2016-05-11
KUNMING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these materials are inefficient due to their wide bandgap and severe electron-hole recombination

Method used

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  • Sulfur-copper-tin-zinc hollow-structure microsphere and preparation method and application thereof
  • Sulfur-copper-tin-zinc hollow-structure microsphere and preparation method and application thereof
  • Sulfur-copper-tin-zinc hollow-structure microsphere and preparation method and application thereof

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preparation example Construction

[0023] The preparation method of the sulfur-copper-tin-zinc hollow structure microspheres of the present invention comprises the following steps:

[0024] A, raw material cupric chloride, stannous chloride and thiourea 1:1:3 molar ratio are dissolved in ethylene glycol and form sample solution;

[0025] B. Add K to the sample solution 4 SiW 12 o 40 The template agent is heat-treated to obtain the target sulfur-copper-tin-zinc hollow structure microspheres.

[0026] In step B, the heat treatment temperature is 180-200° C., and the treatment time is 22-26 hours.

[0027] Step B is to transfer the sample solution to a polytetrafluoro container and fix it in a stainless steel reaction kettle, and place the stainless steel reaction kettle in an oven for heating.

[0028] The step B also includes cooling and removing impurities from the sulfur-copper-tin-zinc hollow structure microspheres.

[0029] The impurity removal is to centrifuge the sulfur-copper-tin-zinc hollow structur...

Embodiment 1

[0036] 2mM SnCl 2 .2H 2 O, 2mM CuCl 2 .2H 2 O, 6mM thiourea and 10 -3 mmolK 4 SiW 12 o 40 Add it to a 50ml DMF beaker to dissolve, transfer it to a 100ml Teflon-lined stainless steel autoclave, and keep it heated in a hot air oven at 200°C for 24h. The precipitate is centrifuged at 6000rpm for 10min from the solution, and used to Ionized water and ethanol with a concentration of 10% by volume were alternately washed 3 times, and then dried at a vacuum degree of 0.1 MPa and a temperature of 70°C for 6 hours to obtain the target product.

Embodiment 2

[0038] 2mM SnCl 2 .2H 2 O, 2mM CuCl 2 .2H 2 O, 2mM thiourea and 10 -5 mmolK 4 SiW 12 o 40 Add it to a 50ml DMF beaker to dissolve, transfer it to a 100ml Teflon-lined stainless steel autoclave, and keep it heated in a hot air oven at 200°C for 24h. The precipitate is centrifuged at 6000rpm for 10min from the solution, and used to Ionized water and ethanol with a concentration of 10% by volume were alternately washed 3 times, and then dried at a vacuum degree of 0.1 MPa and a temperature of 70°C for 6 hours to obtain the target product.

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Abstract

The invention discloses a sulfur-copper-tin-zinc hollow-structure microsphere and a preparation method and application thereof. The kesterite hollow-structure microsphere is 10-15 Mum in diameter, the surface of the microsphere is in a porous geometrical configuration, the pore size is 1-3 Mum, and the pore depth is 1-3 Mum. The preparation method comprises the following steps: dissolving in ethylene glycol the materials, copper chloride, stannous chloride, thiourea and K4SiW12O40 according to a molar ratio of 1:1:3:10-3, to form a sample solution, and thermally treating to obtain the target sulfur-copper-tin-zinc hollow-structure microsphere. The application refers to application of the sulfur-copper-tin-zinc hollow-structure microsphere in the preparation of photocatalysts. The preparation method of the invention is simple to perform and has very high catalytic effect in terms of light degradation of Rhodamine B(RhB) and hydrogen production by photocatalytic degradation of water.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a sulfur-copper-tin-zinc hollow structure microsphere and a preparation method and application thereof. Background technique [0002] In recent years, the development of sustainable industry and the increasing population have led to the increasing demand for energy in human society. Traditional energy is non-renewable and almost exhausted. The world is facing an increasingly severe energy crisis. These problems All drive us to look for environmentally friendly and renewable new energy sources. Solar energy is considered to be an inexhaustible and inexhaustible energy that can meet the increasing energy demand of human society in the future. However, intermittent solar radiation and the lack of cost-effective energy storage methods pose the most important challenges for harnessing solar energy. Since Fujishima and Honda discovered that light radiation can drive the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/047B01J27/02C01B3/04C02F1/30
CPCC01B3/042C02F1/30B01J27/02B01J27/047B01J27/188C02F2305/10B01J35/51B01J35/39Y02E60/36
Inventor 吴琼王海王宝玲卢静乔振芳邹涛隅罗莉
Owner KUNMING UNIV
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