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Silver sulfide/titanium dioxide nanobelt photocatalyst and preparation method thereof

A titanium dioxide and photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem that titanium dioxide photocatalyst can only absorb ultraviolet light, etc., to achieve excellent photocatalytic effect, good light Catalytic activity and the effect of large specific surface area

Inactive Publication Date: 2016-06-15
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that titanium dioxide photocatalysts can only absorb ultraviolet light in the prior art, the invention provides a silver sulfide / titanium dioxide nanobelt photocatalyst and its preparation method

Method used

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  • Silver sulfide/titanium dioxide nanobelt photocatalyst and preparation method thereof
  • Silver sulfide/titanium dioxide nanobelt photocatalyst and preparation method thereof
  • Silver sulfide/titanium dioxide nanobelt photocatalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] First, measure 1 mole of silver nitrate solution, weigh 5 moles of titanium dioxide nanobelts, add the silver nitrate solution and titanium dioxide nanobelts into deionized water and fully dissolve to prepare the first mixed solution. Then measure 0.5 mole of sodium sulfide solution, add the sodium sulfide solution dropwise into the first mixed solution, and then add the first mixed solution with the sodium sulfide solution dropwise for 2 hours by magnetic stirring to prepare the second mixed solution. Next, the second mixed solution was placed in a hydrothermal reaction tank, and reacted at 90° C. for 10 hours to prepare a third mixed solution. Then filter the third mixed solution to obtain a precipitate, wash the obtained precipitate with deionized water, and then vacuum-incubate the washed precipitate at 59-61°C for 9-11 hours, and finally take out the prepared Silver sulfide / titanium dioxide nanobelt photocatalyst.

[0025] The silver sulfide / titanium dioxide nanob...

Embodiment 2

[0027] First, measure 1 mole of silver nitrate solution, weigh 2 moles of titanium dioxide nanobelts, add the silver nitrate solution and titanium dioxide nanobelts into deionized water and fully dissolve to prepare the first mixed solution. Then measure 0.5 mole of sodium sulfide solution, add the sodium sulfide solution dropwise to the first mixed solution, and then add the first mixed solution containing the sodium sulfide solution dropwise for 2 hours by magnetic stirring to prepare the second mixed solution. Then, the second mixed solution was placed in a hydrothermal reaction tank, and reacted at 90° C. for 10 hours to prepare a third mixed solution. Then filter the third mixed solution to obtain a precipitate, wash the obtained precipitate with deionized water, and then vacuum-incubate the washed precipitate at 59-61°C for 9-11 hours, and finally take out the prepared vulcanized Silver / TiO2 nanoribbon photocatalyst.

[0028] The silver sulfide / titanium dioxide nanobelt...

Embodiment 3

[0030] First, measure 1 mole of silver nitrate solution, weigh 1 mole of titanium dioxide nanobelts, add the silver nitrate solution and titanium dioxide nanobelts into deionized water and fully dissolve to prepare the first mixed solution. Then measure 0.5 mole of sodium sulfide solution, add the sodium sulfide solution dropwise to the first mixed solution, and then add the first mixed solution containing the sodium sulfide solution dropwise for 2 hours by magnetic stirring to prepare the second mixed solution. Then, the second mixed solution was placed in a hydrothermal reaction tank, and reacted at 90° C. for 10 hours to prepare a third mixed solution. Then filter the third mixed solution to obtain a precipitate, wash the obtained precipitate with deionized water, and then vacuum-incubate the washed precipitate at 59-61°C for 9-11 hours, and finally take out the prepared vulcanized Silver / TiO2 nanoribbon photocatalyst.

[0031] The silver sulfide / titanium dioxide nanobelt ...

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Abstract

The invention provides a silver sulfide / titanium dioxide nanobelt photocatalyst and a preparation method thereof. During the silver sulfide / titanium dioxide nanobelt photocatalyst preparation, firstly, a silver nitrate solution and titanium dioxide are fully dissolved into deionized water to prepare first mixed liquid; then, a sodium sulfide solution is added into the first mixed liquid; the mixture is fully stirred to prepare second mixed liquid; next, the second mixed liquid is put into a hydrothermal reaction kettle for preparing third mixed liquid; next, the third mixed liquid is filtered to obtain precipitates; finally, the precipitates obtained through separation are washed and are subjected to vacuum heat preservation to prepare the silver sulfide / titanium dioxide nanobelt photocatalyst. The prepared silver sulfide / titanium dioxide nanobelt photocatalyst has the advantages that the specific surface area is great; good sunlight full-wave band photocatalytic activity is realized; the utilization rate of light-catalyzed reaction on sunlight is improved; the utilization range of the sunlight is expanded.

Description

technical field [0001] The invention relates to a photocatalyst and a preparation method thereof, in particular to a silver sulfide / titanium dioxide nano-belt photocatalyst with sunlight full-band photocatalysis effect and a preparation method thereof. Background technique [0002] In the spectrum distribution of sunlight, ultraviolet light accounts for 5% of the total energy of sunlight, among which titanium dioxide is the most typical ultraviolet photocatalyst, but its light absorption is only limited to the ultraviolet region. In the solar spectrum, the energy of visible light accounts for 48%. Visible light catalysts such as bismuth tungstate and bismuth molybdate have also attracted extensive research. However, in the solar spectrum, near-infrared light, which accounts for 44% of the total energy, has not been effectively utilized by suitable photocatalysts. [0003] One-dimensional titania nanoribbons have increasingly become a research hotspot due to the surface can ...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/10C02F1/32C02F101/38C02F103/30
CPCC02F1/32B01J27/04C02F2305/10C02F2101/308B01J35/60B01J35/39
Inventor 田健杨鸿儒胡晓琳崔洪芝魏娜宋晓杰
Owner SHANDONG UNIV OF SCI & TECH
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