Ti-Au alloy nano-tube photonic crystal electrode with high periodicity and construction method thereof

A technology of alloy nano and photonic crystals, which is applied in nano optics, cleaning methods using liquids, nanotechnology, etc., can solve the problems of nano tube blockage, different sizes, uneven distribution of Au nanoparticles, etc., and achieve photoelectric catalysis Enhanced activity, improved photon efficiency, and reduced recombination rate

Inactive Publication Date: 2016-08-24
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the previous literature reports used electrochemical deposition or photoreduction methods to modify gold nanoparticles to TiO 2 However, the obtained Au nanoparticles are often unevenly distributed and have different sizes, which can easily cause the clogging of the nanotube mouth, artificially reduce the light absorption performance of the electrode, and affect its photocatalytic effect.

Method used

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  • Ti-Au alloy nano-tube photonic crystal electrode with high periodicity and construction method thereof
  • Ti-Au alloy nano-tube photonic crystal electrode with high periodicity and construction method thereof
  • Ti-Au alloy nano-tube photonic crystal electrode with high periodicity and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Before anodizing, the Ti0.2Au (0.2at% Au) alloy plate was polished successively with 180 mesh, 320 mesh, 600 mesh and metallographic sandpaper to make the surface uniform and smooth as a mirror surface, and then successively polished in acetone, ethanol, iso Ultrasonic cleaning with propanol and distilled water for 15 min each, and finally drying under nitrogen atmosphere. Under a constant temperature water bath at 10 °C, the pretreated Ti-Au alloy plate was used as the anode, and the platinum sheet electrode was used as the counter electrode with a distance of 1 cm between the electrodes. -1 HF and 1mol·L -1 H 2The ethylene glycol solution of O was used as the anodizing electrolyte solution, under the action of a constant temperature water bath at 10°C, anodized at a constant voltage of 120V for 3h, and then the prepared nanotubes were ultrasonically treated in deionized water, and the nanotubes were prepared from Ti- The surface of the Au alloy plate was removed, an...

Embodiment 2

[0041] The pretreatment of the Ti-Au alloy plate and the anodizing electrolyte solution are the same as in Example 1. Under the action of a constant temperature water bath at 10°C, anodize at a constant voltage of 120V for 3 hours, and then ultrasonically treat the prepared nanotubes in deionized water to remove the nanotubes from the surface of the Ti-Au alloy plate, and then the processed The Ti-Au alloy plate was then anodized under constant voltage conditions of 120V for 20min under the action of a constant temperature water bath at 10°C. After the two-step anodization process was completed, the obtained electrode was cleaned with distilled water, soaked in ethanol for 1 h, then dried under a nitrogen atmosphere, and finally placed in a tube furnace for heat treatment in an air atmosphere at 5 °C / min After the heating rate was raised to 450 °C, it was calcined at a constant temperature of 450 °C for 1 h, and finally the temperature was lowered to room temperature at a cool...

Embodiment 3

[0043] The pretreatment of the Ti-Au alloy plate and the anodizing electrolyte solution are the same as in Example 1. Under the action of a constant temperature water bath at 10°C, anodize at a constant voltage of 120V for 3 hours, and then ultrasonically treat the prepared nanotubes in deionized water to remove the nanotubes from the surface of the Ti-Au alloy plate, and then the processed The Ti-Au alloy plate was then anodized under constant voltage conditions of 120V for 30min under the action of a constant temperature water bath at 10°C. After the two-step anodization process was completed, the obtained electrode was cleaned with distilled water, soaked in ethanol for 1 h, then dried under a nitrogen atmosphere, and finally placed in a tube furnace for heat treatment in an air atmosphere at 5 °C / min After the heating rate was raised to 450 °C, it was calcined at a constant temperature of 450 °C for 1 h, and finally the temperature was lowered to room temperature at a cool...

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Abstract

The invention relates to a Ti-Au alloy nano-tube photonic crystal electrode with high periodicity and a construction method thereof. The photonic crystal electrode comprises TiO2 and Au which is uniformly doped in TiO2 crystal lattices, and is divided into upper and lower layers, wherein nano-pores are formed in the upper layer, and nano-tube arrays are arranged in the lower layer. The construction method comprises the following steps: (1) anodizing in a constant-temperature water bath by using a pre-treated Ti-Au alloy plate as an anode, a platinum gauze electrode as a counter electrode and an ethylene glycol solution containing fluoride and water as an anodizing electrolyte solution to obtain a nano-tube attached Ti-Au alloy plate; (2) carrying out ultrasonic treatment on the nano-tube attached Ti-Au alloy plate, and then continuously anodizing in the constant-temperature water bath to obtain an electrode sample; and (3) washing the electrode sample, soaking in ethanol, drying and heating to obtain a target product Ti-Au alloy nano-tube photonic crystal electrode. Compared with the prior art, the photonic crystal electrode has good photoelectrocatalysis performance, simple preparation process, low cost, high application value and the like.

Description

technical field [0001] The invention relates to an electrode construction method, in particular to a highly periodic Ti-Au alloy nanotube photonic crystal electrode and a construction method thereof. Background technique [0002] The coupling effect of radiation field and material is the most basic form of dynamic process in nature. Photonic crystal is an artificial crystal material that can control its internal radiation mode and respond to external radiation field. The most fundamental feature of this crystal material is that it has a photonic band gap—the photonic band gap. It is precisely because of the existence of the photonic band gap that the photonic crystal can block photons of a specific frequency and capture them. At present, photonic crystals have extensive and important applications in the field of optoelectronic devices and communications. Such typical applications include high-efficiency light-emitting diodes, photonic crystal optical waveguides, photonic cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82Y20/00B82Y40/00C25D11/26B08B3/12
CPCB08B3/12B82Y20/00B82Y40/00C25D11/26
Inventor 赵国华马骏
Owner TONGJI UNIV
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