期刊信息

  • 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
  • 主办： 河北师范大学
  • ISSN： 1000-5854
  • CN： 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

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碳量子点修饰Co2SnO4光催化剂的制备与光催化产氢性能

  • （河北师范大学 化学与材料科学学院，河北 石家庄 050024）
  • DOI： 10.13763/j.cnki.jhebnu.nse.202203009

Preparation and Photocatalytic Hydrogen Evolution Activity of Co2SnO4 Modified by Carbon Quantum Dots

摘要/Abstract

摘要：

通过简单的水热法制备了CQDs/Co2SnO4复合光催化剂，探究了其光催化产氢性能.研究表明，在模拟太阳光照射下，质量分数为2 %的CQDs/Co2SnO4产氢速率达到475.53 μmol/(g·h)，是纯相Co2SnO4的4.74倍，是质量分数为1 % Pt/Co2SnO4的4.15倍.此复合光催化剂光催化活性的提高主要归因于CQDs是良好的电子接受体，能有效提高光生电子和空穴对的分离效率.

Abstract：

CQDs/Co2SnO4 nanocomposites were prepared by a facile hydrothermal method.It was found that 2 % CQDs/Co2SnO4 (mass fraction)nanocomposite exhibited particularly excellent H2 production of 475.53 μmol/(g·h), which is 4.74 times higher than that of bare Co2SnO4 and 4.15 times higher than that of 1 % Pt/Co2SnO4 (mass fraction) under simulated solar light irradiation.The enhanced photocatalytic H2 evolution could be attributed to the fact that CQDs can serve as an xcellent electron acceptor and accelerate the separation efficiency of photogenerated electrons and holes.

关键词

关键词： 碳量子点； Co2SnO4； 光催化； 氢气
Key words： carbon quantum dot； Co2SnO4； photocatalysis； hydrogen

参考文献 18

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