Preparation method of self-assembled three-dimensional Pt/TiO2 hierarchical-structure photocatalyst

A hierarchical structure, photocatalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as low catalytic performance and cumbersome preparation process, and achieve The effect of high quantum efficiency, simple preparation process and excellent catalytic performance

Active Publication Date: 2014-11-05
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the invention is to solve the existing Pt / TiO 2 The preparation method of photocatalyst requires external light source, sacrificial agent or high temperature environment, the preparation process is cumbersome, and the catalytic performance is low. However, a self-assembled three-dimensional Pt / TiO 2 Preparation method of hierarchical structure photocatalyst

Method used

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  • Preparation method of self-assembled three-dimensional Pt/TiO2 hierarchical-structure photocatalyst
  • Preparation method of self-assembled three-dimensional Pt/TiO2 hierarchical-structure photocatalyst
  • Preparation method of self-assembled three-dimensional Pt/TiO2 hierarchical-structure photocatalyst

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specific Embodiment approach 1

[0025] Specific embodiment 1: This embodiment is a self-assembled three-dimensional Pt / TiO 2 The preparation method of the hierarchical structure photocatalyst is completed according to the following steps:

[0026] 1. First, mix tetrabutyl titanate / ethylene glycol mixed solution with chloroplatinic acid / ethylene glycol mixed solution to obtain mixed solution A; then add mixed solution A to NaOH with a concentration of 5mol / L~10mol / L In the aqueous solution, stir at a stirring speed of 200r / min to 400r / min for 1h to 3h to obtain a mixed solution B;

[0027] The tetrabutyl titanate / ethylene glycol mixed solution described in step 1 is formed by mixing tetrabutyl titanate and ethylene glycol, and the tetrabutyl titanate / ethylene glycol mixed solution in the tetrabutyl titanate The concentration of ester is 0.1mol / L~0.5mol / L;

[0028] The chloroplatinic acid / ethylene glycol mixed solution described in step 1 is formed by mixing chloroplatinic acid and ethylene glycol, and the c...

specific Embodiment approach 2

[0036] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the concentration of tetrabutyl titanate in the tetrabutyl titanate / ethylene glycol mixed solution described in step 1 is 0.3mol / L~0.5mol / L L. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: the concentration of tetrabutyl titanate in the tetrabutyl titanate / ethylene glycol mixed solution described in step 1 is 0.5mol / L . Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a self-assembled three-dimensional Pt / TiO2 hierarchical-structure photocatalyst, and relates to the preparation method of the Pt / TiO2 photocatalyst. The invention aims to solve the problems that a conventional Pt / TiO2 photocatalyst preparation method needs an externally-added light source, a sacrificial agent or a high-temperature environment, the preparation process is tedious and the catalytic performance is low. The preparation method comprises the steps: firstly mixing a tetrabutyl titanate / ethylene glycol mixed solution with a chloroplatinic acid / ethylene glycol mixed solution, then adding into an NaOH aqueous solution with the concentration of 5 mol / L-10 mol / L, stirring, then carrying out a reaction for 5 h-24 h at the temperature of 120 DEG C-200 DEG C, washing, drying, then calcining for 2 h-4 h at the temperature of 450-600 DEG C, and thus obtaining the self-assembled three-dimensional Pt / TiO2 hierarchical-structure photocatalyst. The preparation method of the self-assembled three-dimensional Pt / TiO2 hierarchical-structure photocatalyst can be obtained.

Description

technical field [0001] The present invention relates to a kind of Pt / TiO 2 Preparation method of photocatalyst. Background technique [0002] Energy is the foundation of economic and social development. With the increasing demand for energy around the world, human beings are facing the dual threats of fossil fuel depletion and environmental pollution. The development of new energy and renewable clean energy is imminent. Hydrogen energy is considered to be the most ideal and promising green energy that can replace oil, coal, and natural gas because of its abundant reserves, cleanness, and renewable advantages. Since the early 1970s, Japanese scientists Fujishima and Honda discovered TiO 2 After the phenomenon of hydrogen production by photoelectrolysis of water on the electrode, the use of semiconductor materials to photocatalytically split water to produce hydrogen has become a research direction that has attracted worldwide attention. It is considered to be an ideal way t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42C01B3/04
CPCY02E60/36
Inventor 于洪文李海彦
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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