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Preparation method of two-dimensional Bi12TiO20 nanosheet with high visible light response

A visible light, nanosheet technology, applied in nanotechnology, chemical instruments and methods, light water/sewage treatment, etc., can solve the problems of high cost, complicated operation steps, time-consuming, etc., and achieve morphology rules, process and process simplicity. , the effect of improving transmission efficiency

Inactive Publication Date: 2017-09-29
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the complex operation steps, time-consuming, high cost and no two-dimensional Bi 12 TiO 20 Technical drawbacks of nanosheets, providing a way to prepare two-dimensional sheet-like Bi with good photocatalytic activity 12 TiO 20 Photocatalyst and method thereof

Method used

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  • Preparation method of two-dimensional Bi12TiO20 nanosheet with high visible light response
  • Preparation method of two-dimensional Bi12TiO20 nanosheet with high visible light response
  • Preparation method of two-dimensional Bi12TiO20 nanosheet with high visible light response

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Effect test

Embodiment 1

[0023] Take 0.35g of bismuth oxide, 0.01g of P25, 0.466g of potassium chloride and 0.365g of sodium chloride in a mortar, and their molar ratios are 6:1:50:50, and grind evenly. The ground powder was transferred to a quartz boat and calcined at 800 °C for 2 h to prepare 2D Bi 12 TiO 20 Nanosheets.

[0024] figure 1 is the XRD diffraction pattern of the prepared material, the peaks at each position in the figure belong to Bi 12 TiO 20 , compared with the standard JCPDS card (34-0097), it can be confirmed that the prepared soft bismuthite Bi with good crystallinity 12 TiO 20 Material; figure 2 For the scanned photo, it can be seen from the scanned image that the as-prepared Bi 12 TiO 20 It presents an obvious two-dimensional sheet structure. image 3 It is a solid ultraviolet curve. It can be seen that the obtained curve has obvious absorption intensity when the wavelength is greater than 400nm (visible light) (the vertical axis is greater than 0, which means that it...

Embodiment 2

[0026] Take 0.35g of bismuth oxide, 0.01g of P25, 0.280g of potassium chloride and 0.219g of sodium chloride in a mortar, and their molar ratios are 6:1:30:30, and grind evenly. The ground powder was transferred to a quartz boat and calcined at 600° C. for 0.5 h to obtain bismuth titanate.

Embodiment 3

[0028] Take 0.35g of bismuth oxide, 0.01g of P25, 0.466g of potassium chloride and 0.365g of sodium chloride in a mortar, and their molar ratios are 6:1:50:50, and grind evenly. The ground powder was transferred to a quartz boat and calcined at 700°C for 1 hour to obtain bismuth titanate.

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Abstract

The invention belongs to the technical field of preparation of chemical materials, and provides a preparation method of a two-dimensional Bi12TiO20 nanosheet with high visible light response. The preparation method is characterized in that a direct calcining method is adopted for preparing the two-dimensional sheet-shaped Bi12TiO20; as proved by a photocatalytic degradation dye experiment, a prepared two-dimensional Bi12TiO20 nanosheet photocatalyst has high photocatalytic activity and higher performance than conventional blocky Bi12TiO20. The preparation method has the advantages of simple and convenient preparation process, low preparation cost, high efficiency, high practicability, easiness in large-scale production and high economic benefit and environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of chemical material preparation, and provides a two-dimensional flake Bi with good visible light response 12 TiO 20 The method of preparation of the material. Background technique [0002] With the development of modern industry and agriculture, the pollution of water environment is becoming more and more serious. A large number of organic pollutants in water seriously threaten the healthy growth of human beings and even animals and plants. It is imminent to control water pollution. Photocatalytic technology is a kind of advanced oxidation technology (AOPs), which has received extensive attention in recent years in the treatment of organic wastewater, especially in the treatment of high concentration and refractory wastewater. Among them, two-dimensional materials have been a research hotspot in recent years due to their shorter photogenerated electron-hole transport distance, excellent carrier transport ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/18C02F1/30C01G29/00B82Y40/00C02F101/38C02F101/36C02F101/34
CPCB82Y40/00C01G29/00C02F1/30B01J23/002B01J23/18C01P2002/84C01P2004/03C01P2004/22C01P2002/72C02F2101/34C02F2101/36C02F2101/308C02F2101/38C02F2305/10B01J35/39B01J35/40
Inventor 钱坤谢吉民夏莉魏巍姜志锋孙伟吕霞
Owner JIANGSU UNIV
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