Titanate nanotube composite type photocatalyst as well as preparation method and application thereof

A nanotube composite and photocatalyst technology, which is applied in the field of titanate nanotube composite photocatalyst and its preparation, to achieve the effects of easy recycling, high photocatalytic activity and selectivity, and environmental friendliness

Inactive Publication Date: 2014-02-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But we must note that TNT is only active in ultraviolet light, because TNT only absorbs in the ultraviolet region

Method used

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  • Titanate nanotube composite type photocatalyst as well as preparation method and application thereof
  • Titanate nanotube composite type photocatalyst as well as preparation method and application thereof
  • Titanate nanotube composite type photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Anatase TiO 2 (10 nm, 0.5 g) dispersed in 40 mL of 10 M NaOH solution, mixed and stirred uniformly, then placed in a reaction kettle at 140 ℃ for 12 h water heating, then cooled, filtered, and washed with water to pH 8, then use Washed with ethanol, and finally dried at 80 ℃ to obtain a solid, and then calcined at 400 ℃ for 6 h to obtain TNT with a one-dimensional tubular structure. The metal ion precursor salt M(CH 3 COO) 2 (M=Cu, Co, Ni, Fe or Mn) dissolved in water to form 50 mL 3 mM solution, then add ammonia (25%) dropwise to the solution, then add the above TNT to the solution and continue stirring for 20 h , Then filter, wash with ammonia, wash the solution to pH 8, and finally dry to obtain a one-dimensional tubular structure of TNT-M (Cu, Co, Ni, Fe or Mn) photocatalyst. Mix 8 mg of catalyst, 1.5 mL BTF that has been pre-passed with oxygen, and 0.1 mmol alcohol, and place it under visible light (> The photocatalytic activity and selectivity of a series of cataly...

Embodiment 2

[0044] Anatase TiO 2 (10 nm, 0.5 g) dispersed in 40 mL 10 M NaOH solution, mixed and stirred evenly, then 0.3856 g Cd(NO 3 ) 2 ·4H 2 O and 0.1033 g TAA, continue to stir for 0.5 h, and then place in the reaction kettle at 140 ℃ for 48 h, then cool, filter, wash the solution with water to pH 7, and finally dry at 60 ℃ to obtain a one-dimensional tubular structure of CdS / TNT Composite photocatalyst. Mix 8 mg of catalyst, 1.5 mL BTF with oxygen pre-passed with 0.1 mmol alcohol, and place it under visible light (> The photocatalytic activity and selectivity of a series of catalysts as shown in Table 2 were obtained by illuminating for 2 h under 420 nm).

[0045] Table 2 shows the selective alcohol activity of TNT, CdS / TNT and CdS catalysts

[0046]

[0047]

[0048] figure 1 These are the TEM images of TNT (a), TNT-Cu (b), TNT-Co (c), TNT-Ni (d), TNT-Fe (e) and TNT-Mn (f). From figure 1 We can see that the metal ion doped TNT does not affect or change the one-dimensional tubular struc...

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Abstract

The invention discloses a titanate nanotube composite type photocatalyst as well as a preparation method and application thereof. A metal ion doped titanate nanotube photocatalyst with the one-dimensiional tubular structure is obtained by using anatase TiO2 and metal ion acetate as raw materials through hydrothermal and an ion exchange method; in addition, the CdS/titanate nanotube composite type photocatalyst with the one-dimensiional tubular structure is obtained by using the anatase TiO2, Cd(NO3)2.4H2O and thioacetamide as raw materials through one-step hydrothermal. The titanate nanotube composite type photocatalyst is used for the photocatalytic selective oxidation of alcohols for the first time and has high catalytic efficiency. The titanate nanotube composite type photocatalyst is simple to prepare, is used for the selective oxidation of the alcohols by using visible light as driving energy and oxygen as an oxidizing agent and is beneficial to the sustainable development of environments and energy sources.

Description

Technical field [0001] The invention belongs to the field of catalyst preparation and the sustainable development of environment and energy, and specifically relates to a titanate nanotube composite photocatalyst and a preparation method and application thereof. Background technique [0002] Since the discovery of photocatalysis in the 1970s, photocatalysis has developed rapidly due to its mild reaction conditions, basically no pollution, low energy consumption and low cost, and has attracted a large number of scientific researchers. With the increasingly scarce petroleum resources and the deteriorating environment, it is urgent to use photocatalysis for the development of clean renewable energy and the treatment of environmental pollution. In terms of energy photocatalysis, everyone gathered in the photolysis of water to produce hydrogen, CO 2 Reduced to CO and organic matter and dye-sensitized solar cells; in terms of environmental photocatalysis, researchers have been committe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/72B01J23/75B01J23/755B01J23/745B01J27/04B82Y30/00C07B41/06C07C45/38C07C47/54C07C47/575C07C47/55C07C47/232C07C47/542C07C47/21C07C201/12C07C205/44
Inventor 唐紫蓉张燕辉
Owner FUZHOU UNIV
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