g-C3N4-CdS-NiS2 composite nanotube: synthesis and its photocatalytic activity for H2 generation under visible light

CHEN Kelong; HUANG Jianhua

doi:10.11949/0438-1157.20191249

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g-C₃N₄-CdS-NiS₂ composite nanotube: synthesis and its photocatalytic activity for H₂ generation under visible light

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- g-C₃N₄-CdS-NiS₂ composite nanotube: synthesis and its photocatalytic activity for H₂ generation under visible light
- CIESC Journal Vol. 71, Issue 1, Pages: 397-408(2020)
- 作者机构：
  
  浙江理工大学化学系，浙江杭州 310018
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20191249
  CLC： O 643.36
- Received：23 October 2019，
  
  Revised：2019-11-15，
  
  Online First：12 August 2020，
  
  Published：05 January 2020
- 稿件说明：
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陈克龙, 黄建花. g-C₃N₄-CdS-NiS₂复合纳米管的制备及可见光催化分解水制氢[J]. 化工学报, 2020, 71(1): 397-408 DOI: 10.11949/0438-1157.20191249.

CHEN Kelong, HUANG Jianhua. g-C₃N₄-CdS-NiS₂ composite nanotube: synthesis and its photocatalytic activity for H₂ generation under visible light[J]. CIESC Journal, 2020, 71(1): 397-408 DOI: 10.11949/0438-1157.20191249.
陈克龙, 黄建花. g-C₃N₄-CdS-NiS₂复合纳米管的制备及可见光催化分解水制氢[J]. 化工学报, 2020, 71(1): 397-408 DOI: 10.11949/0438-1157.20191249. DOI：

CHEN Kelong, HUANG Jianhua. g-C₃N₄-CdS-NiS₂ composite nanotube: synthesis and its photocatalytic activity for H₂ generation under visible light[J]. CIESC Journal, 2020, 71(1): 397-408 DOI: 10.11949/0438-1157.20191249. DOI：

摘要

光生电子-空穴对的快速复合是导致半导体光催化剂性能不佳的重要因素之一，构建异质结是分离光生电子-空穴对的有效方法。结合热缩合和两步水热反应构建了g-C

-CdS-NiS

复合纳米管，并进一步研究了在可见光照射下不同CdS含量的g-C

-CdS-NiS

分解水制氢的光催化性能。结果表明，当CdS含量为10%(质量)时，三元复合物的产氢速率最高(50.9 μmol·h

-1

)，是纯g-C

纳米管的25倍，是g-C

-CdS和g-C

-NiS

二元复合物的11倍。而且，经过五次循环光催化反应后，产氢速率保持不变。光催化制氢性能的提高主要源于g-C

、CdS与NiS

形成的异质结促进光生电子和空穴的迁移及电子-空穴对的分离。

Abstract

Rapid recombination of photogenerated electron-hole pairs is one of important factors leading to poor performance of semiconductor photocatalysts. Constructing a heterojunction is an effective method for separation of photogenerated electron-hole pairs. In the present work

g-C

-CdS-NiS

composite nanotube was synthesized

via

thermal condensation using urea and thiourea as precursors

and subsequent two-step hydrothermal reactions. The photocatalytic activity of g-C

-CdS-NiS

composite was investigated for H

generation from water using triethanolamine as sacrificial agent under visible light irradiation. The optimal g-C

-CdS-NiS

composite with the content of CdS 10%(mass) produced H

at a rate of 50.9 μmol·h

-1

which is 25 times and 11 times of that of pure g-C

nanotube and g-C

-CdS (NiS

) binary composite

respectively. Moreover

cyclic photocatalytic experiments demonstrated the high stability of g-C

-CdS-NiS

composite. The improvement in the photocatalytic performance for H

production can be mainly attributed to the formation of heterojunction between CdS

NiS

and g-C

nanotubes

which is beneficial to the separation of photogenerated electron-hole pairs.

关键词

Keywords

references

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