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Cobalt molybdate-based Z-type photo-anode material and high-temperature solid-phase preparation method and application thereof

A cobalt molybdate-based, high-temperature solid-phase technology is applied to building thermal insulation materials, buildings, building components, etc., and can solve problems such as unsatisfactory protection effects, achieve high-efficiency photocathode protection, simple preparation methods, and good protection effects.

Active Publication Date: 2022-03-25
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cobalt molybdate-based Z-type photoanode material and its high-temperature solid-phase preparation method and application, so as to solve the problem that the photoanode material in the prior art has an unsatisfactory protection effect on marine construction projects

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  • Cobalt molybdate-based Z-type photo-anode material and high-temperature solid-phase preparation method and application thereof
  • Cobalt molybdate-based Z-type photo-anode material and high-temperature solid-phase preparation method and application thereof
  • Cobalt molybdate-based Z-type photo-anode material and high-temperature solid-phase preparation method and application thereof

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preparation example Construction

[0028] The present invention aims at the problem that the photoanode materials currently used for photocathode protection have an unsatisfactory protection effect on marine construction projects, and provides a high-temperature solid-phase preparation method for a cobalt molybdate-based Z-type photoanode material, comprising the following steps : After mixing and grinding tungsten-containing compound, molybdenum-containing compound and cobalt-containing compound, roasting to obtain the cobalt molybdate-based Z-type photoanode material. Among them, grinding helps to fully contact the crystal faces of tungsten-containing compounds, molybdenum-containing compounds and cobalt-containing compounds, and nucleation reactions occur at the interfaces at high temperatures.

[0029] This is because the CoMoO in the cobalt molybdate-based Z-type photoanode material prepared by a high-temperature solid-phase preparation method 4 with CoWO 4 With a matching band structure, CoMoO 4 has a l...

Embodiment 1

[0040] 1. The cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) The photoanode material is prepared according to the method comprising the following steps:

[0041] (1) Put 10mmol of tungsten oxide, 500mmol of molybdenum oxide and 510mmol of cobalt oxide into a mortar and grind for 5min to obtain a precursor mixture;

[0042] (2) The precursor mixture prepared in the above step (1) was roasted at 700°C for 12 hours to obtain the cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) photoanode material.

[0043] 2. CoMoO 4 Preparation of photoanode materials: with the above-mentioned cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) The difference in the preparation method of the photoanode material is only that: the step of adding tungsten oxide is omitted, which will not be repeated here.

[0044] 3. CoWO 4 Preparation of photoanode materials: with the above-mentioned cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) The difference in the preparation method of the photoanod...

Embodiment 2

[0048] 1. The cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) The photoanode material is prepared according to the method comprising the following steps:

[0049] (1) Put 500mmol of tungsten nitrate, 10mmol of molybdenum nitrate and 510mmol of cobalt nitrate into a mortar and grind for 5min to obtain the precursor mixture;

[0050] (2) The precursor mixture prepared in the above step (1) was roasted at 1500°C for 3 hours to obtain the cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) photoanode material.

[0051] 2. CoWO 4 Preparation of photoanode materials: with the above-mentioned cobalt molybdate-based Z-type (CoMoO 4 -CoWO 4 ) The difference in the preparation method of the photoanode material is only that the step of adding molybdenum nitrate is omitted, and will not be repeated here.

[0052] 3. Under intermittent light, the CoWO obtained in Example 2 4 and CoMoO 4 -CoWO 4 The current-time curve of the photoanode material is tested, such as figure 2 shown. ...

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Abstract

The invention belongs to the technical field of marine construction engineering metal corrosion inhibition, and particularly relates to a cobalt molybdate-based Z-type photo-anode material and a high-temperature solid-phase preparation method and application thereof. The cobalt molybdate-based Z-type photo-anode material is prepared according to the method comprising the following steps: mixing and grinding a tungsten-containing compound, a molybdenum-containing compound and a cobalt-containing compound, and roasting to obtain the cobalt molybdate-based Z-type photo-anode material. The cobalt molybdate-based Z-type photo-anode material disclosed by the invention has a good protection effect on ocean construction engineering, and can realize photoelectric cathode protection of an ocean engineering structure.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion inhibition in marine construction engineering, and in particular relates to a cobalt molybdate-based Z-type photoanode material and a high-temperature solid-phase preparation method and application thereof. Background technique [0002] The oceans on the earth are vast and rich in natural resources. In recent years, due to the gradual scarcity of land resources, a large number of marine resources have been developed. In addition, economic globalization is advancing steadily, trade links between countries are getting closer and closer, and shipping has become one of the important modes of transportation. However, regardless of offshore development, maritime transportation or maritime military construction, the most basic and widely used engineering material is steel. However, steel is easily corroded in seawater. Therefore, for the development of the ocean and the development of the econo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/14C23F13/08E04B1/64
CPCC23F13/14C23F13/08E04B1/642Y02P20/133
Inventor 张小影金祖权蒋浩森王晓晴樊伟杰孙萌萌陈越华程海洋唐恒闫杰刘佳豪王亚伟
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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