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g-C3N4/H-TiO2 based nano tube array as well as manufacturing method thereof and application thereof

A nanotube array, nanotube technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of nanotube structure damage, decreased light utilization rate, poor effect, etc., to achieve wide application and improve photoelectric conversion. The effect of high efficiency and light conversion rate

Inactive Publication Date: 2017-06-30
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing modification technologies of nanotube arrays are mainly ion doping, semiconductor recombination, noble metal deposition and dye surface modification, among which the combined modification of multiple methods has been reported, but the effect is poor, and the modification process is more common The destruction of the nanotube structure, etc., resulting in a decrease in light utilization

Method used

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  • g-C3N4/H-TiO2 based nano tube array as well as manufacturing method thereof and application thereof
  • g-C3N4/H-TiO2 based nano tube array as well as manufacturing method thereof and application thereof
  • g-C3N4/H-TiO2 based nano tube array as well as manufacturing method thereof and application thereof

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Effect test

Embodiment 1

[0041] a g-C 3 N 4 / H-TiO 2 The preparation method of base nanotube array, concrete steps are:

[0042] Electrolyte is selected, specifically 0.5wt% NH 4 F+0.1MH 3 PO 4 An aqueous solution of metal titanium is anodized in the electrolyte system at 20V for 1 hour, and a highly ordered array of nanotubes grows on the surface of metal titanium. The average diameter of nanotubes is about 90nm, the thickness of the tube wall is 15nm, and the tube length 600nm.

[0043] The ordered array of nanotubes was first heat-treated at 500°C for 2h, and then hydrogenated on the surface at 450°C for 5h in a hydrogen atmosphere to obtain H-TiO 2 base nanotube arrays.

[0044] Weigh a certain amount of urea, and heat-treat the urea in a muffle furnace at 500°C for 3 hours to obtain light yellow g-C 3 N 4 Powder; according to the ratio of solid-liquid ratio 1g: 50ml, measure g-C respectively 3 N 4 Powder and absolute ethanol, mixed thoroughly and then ultrasonically peeled off for 2 ho...

Embodiment 2

[0046] a g-C 3 N 4 / H-TiO 2 The preparation method of base nanotube array, concrete steps are:

[0047] Prepare electrolyte 0.5wt% NH 4 F+0.1MH 3 PO 4 Aqueous solution, the titanium alloy Ti-0.2Pd (TA9) was anodized in the electrolyte system at 20V for 1h, and a highly ordered ordered array of nanotubes grew on the surface of the titanium alloy TA9. The average diameter of the nanotubes was about 85nm. The tube wall thickness is 20nm and the tube length is 650nm.

[0048] The ordered array of nanotubes was first heat-treated at 500°C for 2h, and then hydrogenated on the surface at 450°C for 5h in a hydrogen atmosphere to obtain H-TiO 2 base nanotube arrays.

[0049] Measure 5g of urea and 30ml of absolute ethanol respectively, and fully dissolve urea in absolute ethanol to obtain an ethanol solution of urea; 2 The base nanotube array was soaked in the urea suspension for 30min, then taken out and heat-treated at 500°C for 3h to obtain g-C 3 N 4 / H-TiO 2 base nanotub...

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Abstract

The invention provides a g-C3N4 / H-TiO2 based nano tube array as well as a manufacturing method thereof and an application thereof, and belongs to the technical field of nano composite materials. The manufacturing method comprises the following specific steps of: manufacturing a nano tube ordered array on a titanium-containing metallic matrix through an anode oxidization method; performing crystallization and surface hydrogenating treatment on the manufactured nano tube ordered array to obtain a H-TiO2 based nano tube array; and compounding the manufactured H-TiO2 based nano tube array and g-C3N4 to obtain the g-C3N4 / H-TiO2 based nano tube array. The ordered nano tube array composite material is widely applied, and can be used as a photoelectrode for use; the advantages of the nano tube ordered sequence are sufficiently brought into play, so that multi-component modification is realized while the morphology and the structure of the nano tube array are not obviously improved, sunlight response range is remarkably expanded, photoelectric conversion efficiency is obviously improved, and support is provided for designing, developing and applying a high-performance photoelectrode.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, in particular to a g-C 3 N 4 / H-TiO 2 Base nanotube array and its preparation method and application. Background technique [0002] Titanium dioxide is one of the most common and widely used oxide semiconductor materials today. Because of its low price, harmless to human body, and relatively stable chemical properties, it has broad application prospects in photoelectric conversion, photocatalysis, and biomedicine, and has attracted great attention. TiO prepared on the surface of metal Ti by anodic oxidation technology 2 The nanotubes are evenly distributed, arranged in a very orderly and regular array, have a large specific surface area, and have a high quantum effect. The nanotubes are directly connected to the metal titanium conductive substrate, and the combination is firm. It can be used directly as a photoelectrode, etc. . However, due to its inherent wide band gap, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B01J27/24B01J21/06B82Y30/00B82Y40/00
CPCC25D11/26B82Y30/00B82Y40/00B01J21/063B01J27/24B01J35/39
Inventor 刘世凯郭丽萍邓士炜刘鑫鑫
Owner HENAN UNIVERSITY OF TECHNOLOGY
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