Preparation method of embedded CoS / g-C3N4 photocatalyst with photocatalytic hydrogen evolution performance
By introducing CoS into g-C3N4, an embedded CoS/g-C3N4 photocatalyst is formed, which solves the problem of low hydrogen production performance of photocatalysts in the prior art, and achieves efficient photolysis and simulated seawater hydrogen production performance.
CN119680602AInactive Publication Date: 2025-03-25LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Patent Information
- Application Number
- CN202411828825.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
The existing photocatalysts have problems of uncontrollable morphology and incomplete carrier separation in order to improve the hydrogen production performance of g-C3N4, resulting in low hydrogen production performance.
Method used
The metal element Co is introduced through doping, and the growth of CoS is achieved inside g-C3N4 through in situ vulcanization technology, forming an embedded CoS/g-C3N4 photocatalyst to enhance interface contact and activity.
Benefits of technology
The hydrogen production performance of photohydrolysis and photolysis of g-C3N4 was significantly improved. The hydrogen production rate of CoS/g-C3N4 reached 386.7μmol h-1g-1, and the hydrogen production rate of photolysis simulated seawater reached 208.9μmol h-1g-1.
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Abstract
The invention belongs to the technical field of catalysts, and provides a preparation method of an embedded CoS / g-C3N4 photocatalyst with photocatalytic hydrogen evolution performance, and the preparation method comprises the following steps: mixing guanidine hydrochloride, CoCl2. 6H2O and water, carrying out oil bath, and continuously stirring to obtain mixed powder; calcining the mixed powder in an inert gas atmosphere to obtain cobalt-doped carbon nitride (Co-CN); na2S, Co-CN and water are mixed and subjected to ultrasonic dispersion, and dispersion liquid is obtained; the dispersion liquid is sequentially subjected to a hydrothermal reaction and vacuum drying, and the embedded CoS / g-C3N4 photocatalyst is obtained. The prepared CoS / g-C3N4 shows excellent photocatalytic hydrogen production performance, the rate of hydrogen production through water photolysis of the CoS / g-C3N4 reaches 386.7 [mu] mol h <-1 > g <-1 >, and the rate of hydrogen production through seawater photolysis simulation reaches 208.9 [mu] mol h <-1 > g <-1 >.
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