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Composite film with photocatalytic function and preparation method thereof

A composite film and photocatalytic technology, applied in the field of photocatalytic materials, can solve the problem of low adsorption index, achieve large adsorption capacity, easy regeneration, and improve photocatalytic efficiency

Inactive Publication Date: 2012-10-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption index of ACF to organic pollutants in water is very low, even in the air, when the relative humidity is high, the adsorption capacity of ACF to organic pollutants such as toluene will drop sharply; therefore, a suitable carrier is still the need for this technology. well-resolved issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) First select industrial pure Ti to process the matrix material for photocatalytic degradation of organic matter;

[0032] (2) Pure titanium pretreatment: use metallographic sandpaper with labels of 600#, 800#, 1000#, and 1200# to polish the pure titanium base material step by step from coarse sand to fine sand, and then use acetone, alcohol, distilled water Ultrasonic cleaning, dry for use.

[0033] (3) Electrolyte configuration: use sodium carbonate solution system, configure 10L sodium carbonate solution with a concentration of 15g / L and potassium hydroxide solution with a concentration of 2g / L, stir and dissolve at a constant temperature of 40°C, and set aside;

[0034] (4) Micro-arc oxidation of pure titanium: place the pure titanium substrate in the electrolytic cell of the bipolar pulse micro-arc oxidation equipment and add the prepared electrolyte, use pure titanium as the anode, and the stainless steel electrolytic cell as the cathode, adjust the process par...

Embodiment 2

[0038] (1) First select the medical Ti6Al4V alloy to process the photodynamic therapy matrix material;

[0039] (2) Titanium alloy pretreatment: The titanium alloy substrate is polished and polished step by step from coarse sand to fine sand using metallographic sandpaper with labels of 600#, 800#, 1000#, and 1200#, and then ultrasonicated with acetone, alcohol, and distilled water Wash, dry and set aside.

[0040] (3) Electrolyte configuration: use sodium carbonate solution system, configure 10L sodium carbonate solution with a concentration of 15g / L and potassium hydroxide solution with a concentration of 2g / L, stir and dissolve at a constant temperature of 40°C, and set aside;

[0041] (4) Micro-arc oxidation of titanium alloy: place the titanium alloy in the electrolytic cell of the bipolar pulse micro-arc oxidation equipment and add the prepared electrolyte, use the Ti6Al4V alloy as the anode, and the stainless steel electrolytic cell as the cathode, adjust the process pa...

Embodiment 3

[0045] (1) First, select industrial Ti6Al4V to process the matrix material for photocatalytic degradation of organic matter;

[0046] (2) Ti6Al4V pretreatment: use metallographic sandpaper with labels of 600#, 800#, 1000#, and 1200# to polish and polish the base material step by step from coarse sand to fine sand, and then ultrasonically clean it with acetone, alcohol, and distilled water. Dry and set aside.

[0047] (3) Electrolyte configuration: use sodium carbonate solution system, configure 10L sodium carbonate solution with a concentration of 15g / L and potassium hydroxide solution with a concentration of 2g / L, stir and dissolve at a constant temperature of 40°C, and set aside;

[0048] (4) Micro-arc oxidation of Ti6Al4V substrate: place the titanium alloy in the electrolytic cell of the bipolar pulse micro-arc oxidation equipment and add the prepared electrolyte, use Ti6Al4V as the anode, and the stainless steel electrolytic cell as the cathode, and adjust the process par...

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PUM

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Abstract

The invention relates to a composite film with photocatalytic function and a preparation method thereof. The composite film is prepared on the titanium or titanium alloy surface. A nano zinc oxide photosensitizer is uniformly and dispersedly deposited and fixed on a titanium dioxide porous material which is also a semiconductor photosensitive material to form a novel composite film with photocatalytic function. The composite film has the purification functions of adsorption and decomposition, and also has the peculiar photocatalytic enhancement effect of heterojunction compounded by the two semiconductor photosensitive materials. Under the action of ultraviolet or natural light, the composite film can perform quick separation, efficient adsorption and quick degradation on methylbenzene, phenol and other typical toxic liquid organic pollutants, and can also purify the water source through efficient adsorption even under lightless conditions; and the composite film can also be used as an efficient photosensitizer for adjuvantly treating cancers in photodynamic therapy.

Description

technical field [0001] The invention relates to a novel photocatalytic functional composite film and its preparation method. It is prepared on the surface of titanium or titanium alloy, and zinc oxide nanorods or nanocones are grown by electrodeposition on the bottom layer of porous titanium dioxide and its surface hole walls by micro-arc oxidation. It is compounded and belongs to the field of photocatalytic materials that can be used for the purification treatment of toxic pollutants and the auxiliary treatment of cancer by photodynamic therapy. Background technique [0002] In recent years, nano-TiO 2 Photocatalytic technology has also made great progress in the treatment of toxic liquid pollution. Utilizing photocatalysis and using active free radicals to oxidize and decompose liquid pollutants is a simple and efficient method for treating liquid pollutants. Using nano-TiO 2 Under ultraviolet and visible light, free hydroxyl groups (·OH) and active oxygen (·O) with stro...

Claims

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Application Information

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IPC IPC(8): C25D11/26C25D9/08C30B29/16C30B29/64C30B30/02B82Y40/00B82Y30/00
Inventor 储成林孙青刘政红郭超盛晓波董寅生
Owner SOUTHEAST UNIV
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