Rutile phase titanium dioxide/graphene film preparation method

A graphene film and titanium dioxide technology is applied in the field of photocatalytic materials to achieve the effects of high photodegradation rate, improved photocatalytic activity, large adsorption and photocatalytic reaction surface area

Active Publication Date: 2019-12-13
XIAN UNIV OF SCI & TECH
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Problems solved by technology

However, the sol-gel method to prepare rutile TiO 2 and TiO 2 There are few research reports on graphene thin films and their related photocatalytic properties

Method used

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  • Rutile phase titanium dioxide/graphene film preparation method
  • Rutile phase titanium dioxide/graphene film preparation method
  • Rutile phase titanium dioxide/graphene film preparation method

Examples

Experimental program
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Effect test

Embodiment

[0025] TiO 2 and TiO 2 / Preparation of graphene film

[0026] 1×1 cm by low-pressure chemical vapor deposition (CVD) 2 Graphene thin films were prepared on copper substrates. Subsequent preparation of TiO by sol-gel method 2 and TiO 2 / graphene film. First, add 20 ml of tetrabutyl titanate into 15 ml of absolute ethanol and mix and stir for 1 hour to form A solution; then add 1.8 ml of acetylacetone and 2 ml of deionized water into 15 ml of absolute ethanol and mix and stir for 1 hours to form B solution; then, slowly inject B solution into A solution, stir at room temperature for 1 hour, and age in an oven at 60 °C to obtain TiO 2 Sol; Finally, spin-coat 4 layers of TiO repeatedly at a speed of 4000 rpm for 15 seconds on Cu substrates without graphene film layer and with graphene film layer respectively. 2 Sol, each spin-coated layer, dried in an oven at 110°C for 15 minutes, then placed the sample in an Ar gas atmosphere with a flow rate of 200 sccm, and annealed at ...

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Abstract

The invention discloses a rutile phase titanium dioxide / graphene film preparation method, which comprises: adding 20 ml of tetrabutyl titanate into 15 ml of dehydrated alcohol, and stirring for 1 h toform a solution A; adding 1.8 ml of acetylacetone and 2 ml of deionized water into 15 ml of dehydrated alcohol, and carrying out mixed stirring for 1 h to form a solution B; slowly injecting the solution B into the solution A, stirring for 1 h at a room temperature, and aging in a drying oven at a temperature of 60 DEG C to obtain a TiO2 sol; coating a Cu substrate / graphene thin film layer with four layers of the TiO2 sol in a spin coating manner, wherein drying is performed for 15 min in a drying oven at a temperature of 110 DEG C after the spin-coating of the one layer; and annealing in anAr atmosphere with a flow rate of 200 sccm. According to the invention, the graphene layer is inserted between the Cu substrate and the TiO2 film through the sol-gel method, such that the photocatalytic activity of the TiO2 film to methylene blue (MB) dye solutions is effectively improved.

Description

technical field [0001] The invention relates to the field of photocatalytic materials, in particular to a method for preparing a rutile phase titanium dioxide / graphene film. Background technique [0002] Environmental pollution and energy issues are issues of common concern to all countries in the world. Especially in recent years, with the increase in the amount of urban sewage treatment and the rapid development of various industries, resulting in the imbalance and danger of the ecological system, the problem of water pollution has increasingly attracted widespread attention. The industrial wastewater produced mainly includes salts, curing agents , detergents, organic matter and reactive dyes, etc., pose a serious threat to human health and other organisms. Therefore, research on advanced smart semiconductor materials, which are clean and renewable energy sources and have the ability to degrade pollutants, has attracted more and more attention from various countries. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J35/00B01J35/02B01J37/02B01J37/03B01J37/08
CPCB01J21/18B01J35/004B01J35/02B01J37/0244B01J37/036B01J37/08
Inventor 王安义刘进张威虎田丰王树奇吕媛媛
Owner XIAN UNIV OF SCI & TECH
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