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Preparation method for orientationally growing F-doped ZnO porous film on inner surface of microchannel

A technology of directional growth and porous film, which is applied in the direction of producing decorative surface effects, microstructure technology, microstructure devices, etc., can solve problems such as unsatisfactory effects, and achieve the promotion of functional design and application, growth shape Variety of appearance and controllable film thickness

Inactive Publication Date: 2015-05-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a pity that the effect of the modification of the inner surface of this microchannel is not very ideal, because the length of the ZnO nanorods is only about 1-2 μm.

Method used

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  • Preparation method for orientationally growing F-doped ZnO porous film on inner surface of microchannel
  • Preparation method for orientationally growing F-doped ZnO porous film on inner surface of microchannel
  • Preparation method for orientationally growing F-doped ZnO porous film on inner surface of microchannel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of Lotion I (V 浓硫酸 :V 双氧水 :V 蒸馏水 =4:1:20) and lotion II (V 氨水 :V 双氧水 :V 蒸馏水 =1:4:20). First, soak the microchannel in washing solution Ⅰ at 80°C for 30 minutes; rinse the microchannel with deionized water; then soak the microchannel in washing solution Ⅱ at 80°C for 30 minutes; then rinse the microchannel with deionized water , and finally dried for later use.

[0037] Prepare zinc acetate ethanol solution with a concentration of 0.01M and sodium hydroxide ethanol solution with a concentration of 0.03M; use a micro-syringe pump to push the above two solutions into the channel at the same time at a speed of 30 μL / min, and stop when the solution is full of the micro-channel. Transportation; place the microchannel in an oven with a temperature of 60°C and keep it warm for 2 hours; then raise the temperature of the oven to 70°C and keep it warm for 2 hours; finally raise the temperature of the oven to 150°C and dry it for 4 hours. A ZnO seed layer thin fi...

Embodiment 2

[0043] Preparation of Lotion I (V 浓硫酸 :V 双氧水 :V 蒸馏水 =4:1:20) and lotion II (V 氨水 :V 双氧水 :V 蒸馏水 =1:4:20). First, soak the microchannel in washing solution I at 75°C for 25 minutes; rinse the microchannel with deionized water; then soak the microchannel in washing solution II at 75°C for 25 minutes; then rinse the microchannel with deionized water , and finally dried for later use.

[0044] Prepare a zinc acetate ethanol solution with a concentration of 0.015M and a sodium hydroxide ethanol solution with a concentration of 0.025M; push the above two solutions into the channel at a speed of 25 μL / min respectively with a micro-syringe pump, and stop when the solution is full of the micro-channel. Transport; place the microchannel in an oven at 55°C and keep it warm for 2.5 hours; then raise the temperature of the oven to 75°C and keep it warm for 2.5 hours; finally raise the temperature of the oven to 155°C and dry it for 3.5 hours, then A ZnO seed layer thin film is obtain...

Embodiment 3

[0048] Preparation of Lotion I (V 浓硫酸 :V 双氧水 :V 蒸馏水 =4:1:20) and lotion II (V 氨水 :V 双氧水 :V 蒸馏水 =1:4:20). First, soak the microchannel in washing solution Ⅰ at 70°C for 20 minutes; rinse the microchannel with deionized water; then soak the microchannel in washing solution Ⅱ at 70°C for 20 minutes; then rinse the microchannel with deionized water , and finally dried for later use.

[0049] Prepare zinc acetate methanol solution with a concentration of 0.02M and sodium hydroxide methanol solution with a concentration of 0.03M; use a micro-syringe pump to push the above two solutions into the channel at the same time at a speed of 20 μL / min, and stop when the solution is full of the micro-channel. Transportation; place the microchannel in an oven with a temperature of 50°C and keep it warm for 3 hours; then raise the temperature of the oven to 80°C and keep it warm for 3 hours; finally raise the temperature of the oven to 160°C and dry it for 3 hours, and the inner surface o...

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Abstract

The invention relates to a preparation method for orientationally growing an F-doped ZnO porous film on the inner surface of a microchannel, which comprises the following steps of: (1) cleaning the microchannel; (2) preparing an alcoholic solution with zinc salt and an alkaline alcoholic solution, then simultaneously pushing the two solutions into the cleaned channel, heating, keeping warm and drying to obtain a microchannel in which a ZnO seed crystal is grown; (3) preparing a zinc salt and villiaumite mixed aqueous solution and an alkaline aqueous solution, then simultaneously pushing the two solutions into the microchannel with the ZnO seed crystal, stopping delivering the solutions after continuously introducing 0.5-3h, heating to 130-200 DEG C and drying 1-4h; and finally cleaning by using deionized water and drying 1-4h at 130-200 DEG C. The preparation method is convenient and simple to operate, the film of the porous film obtained by the preparation method is firmly combined with a substrate, and has various and uniform growing features and controllable film thickness, wherein the thickness is 0.5-50 mum; and the film can realize modification on the inner wall of the microchannel.

Description

technical field [0001] The invention belongs to the field of preparation of porous films, in particular to a preparation method for directional growth of F-doped ZnO porous films on the inner surface of a microchannel. Background technique [0002] Since the 1990s, an important trend in the development of natural science and engineering technology is to move towards miniaturization. Compared with conventional devices, microfluidic devices have many advantages such as large specific surface area, small reaction space, and laminar flow characteristics of fluids, which make them have broad potential application prospects in the fields of biology, medicine, and chemical industry. Microchannel is an important part of microfluidic devices. In the initial stage of development in this field, the inner surface of microchannel is only a pure surface that provides a microspace. With the development of microfluidic technology, especially the various specific applications of microfluidi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B81C1/00C01G9/02
Inventor 王宏志张权李耀刚张青红
Owner DONGHUA UNIV