Application method of perovskite complex oxides to hydrogen production by photocatalytic water splitting

A technology of composite oxides and application methods, which is applied in the field of photocatalytic hydrogen production from perovskite composite oxides, can solve the problems of ineffective application of industrialized water to hydrogen production, long preparation time, and high energy consumption for preparation. The required time is short, the preparation steps are simple, and the effect of ensuring solubility

Inactive Publication Date: 2019-06-14
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are still some shortcomings in its actual use. For example, the preparation of photocatalyst catalyst is relatively complicated, the preparation time is long and the energy consumption is high, which affects the efficiency of photocatalytic water splitting to produce hydrogen, and cannot be effectively applied to industrial water production. hydrogen process

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  • Application method of perovskite complex oxides to hydrogen production by photocatalytic water splitting
  • Application method of perovskite complex oxides to hydrogen production by photocatalytic water splitting
  • Application method of perovskite complex oxides to hydrogen production by photocatalytic water splitting

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Embodiment 1

[0032] The present invention provides such as Figure 1-2 The application method of a kind of perovskite composite oxide shown in photocatalytic water splitting hydrogen production, described perovskite composite oxide molecular formula is RE 1-X B X CO 3 , 0≤x≤1, the perovskite composite oxide has a porous microscopic appearance, RE is set to La, Ce, Pr, Nd, Sm or Eu, B and C are different or the same transition metal, alkali metal or alkaline earth metals;

[0033] Concrete preparation method comprises the following steps:

[0034] S1. Preparation of chemical element mixture: select the set chemical elements according to the actual situation, and then mix the selected chemical elements according to the stoichiometric molar ratio according to the chemical composition of the perovskite composite oxide molecular formula to prepare the chemical element mixture;

[0035] S2. Preparation of the raw material of the chloride mixed solution: dissolving the chemical element mixtur...

Embodiment 2

[0046] The present invention provides such Figure 1-2 The application method of a kind of perovskite composite oxide shown in photocatalytic water splitting hydrogen production, described perovskite composite oxide molecular formula is RE 1-X B X CO 3 , 0≤x≤1, the perovskite composite oxide has a porous microscopic appearance, RE is set to La, Ce, Pr, Nd, Sm or Eu, B and C are different or the same transition metal, alkali metal or alkaline earth metals;

[0047] Concrete preparation method comprises the following steps:

[0048] S1. Preparation of chemical element mixture: select the set chemical elements according to the actual situation, and then mix the selected chemical elements according to the stoichiometric molar ratio according to the chemical composition of the perovskite composite oxide molecular formula to prepare the chemical element mixture;

[0049] S2. Preparation of the raw material of the chloride mixed solution: dissolving the chemical element mixture i...

Embodiment 3

[0060] The present invention provides such Figure 1-2 The application method of a kind of perovskite composite oxide shown in photocatalytic water splitting hydrogen production, described perovskite composite oxide molecular formula is RE 1-X B X CO 3 , 0≤x≤1, the perovskite composite oxide has a porous microscopic appearance, RE is set to La, Ce, Pr, Nd, Sm or Eu, B and C are different or the same transition metal, alkali metal or alkaline earth metals;

[0061] Concrete preparation method comprises the following steps:

[0062] S1. Preparation of chemical element mixture: select the set chemical elements according to the actual situation, and then mix the selected chemical elements according to the stoichiometric molar ratio according to the chemical composition of the perovskite composite oxide molecular formula to prepare the chemical element mixture;

[0063] S2. Preparation of the raw material of the chloride mixed solution: dissolving the chemical element mixture i...

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Abstract

The invention discloses an application method of perovskite complex oxides to hydrogen production by photocatalytic water splitting, and particularly relates to the field of a photocatalysis material.The molecular formula of the perovskite complex oxides is RE1-XBXCO3; x is greater than or equal to 0 but smaller than or equal to 1. The preparation steps of the perovskite complex oxide powder aresimpler; the time required is shorter; the energy required by short-time freeze drying and high-precision grinding is obviously lower than the energy required for long-time roasting; meanwhile, underthe same condition, the hydrogen production speed is obviously higher than that in the prior art; the efficiency of the hydrogen production by photocatalytic water splitting is higher; the method is effectively applicable to the industrialized hydrogen preparation process so as to solve the problem in the prior art.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, and more specifically, the invention relates to an application method of a perovskite composite oxide in photocatalytic decomposition of water to produce hydrogen. Background technique [0002] The conversion of solar chemical energy mainly includes the use of solar energy to decompose water into hydrogen and oxygen on the surface of photocatalysts and the use of solar energy and photocatalysts to decompose organic pollutants such as formaldehyde. Both of these solar energy utilization methods rely on efficient photocatalysts. , a catalyst that converts solar energy and catalyzes chemical reactions. [0003] The invention patent of patent application publication number CN 109331852 A discloses a photocatalyst catalyst material and its preparation method and application. Nano, its molecular formula is La1-xCaxTaO1+yN2-y, wherein, 0≤x, y≤1, the photocatalyst catalyst material can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J37/32B01J37/02B01J37/34C25B11/06C25B1/04
CPCY02E60/36
Inventor 房玉真王东亭孔祥晋刘军海
Owner LIAOCHENG UNIV
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