光催化,石墨相氮化碳,稀土,Ag,异质结,降解," /> 光催化,石墨相氮化碳,稀土,Ag,异质结,降解,"/> photocatalysis,graphite phase carbon nitride,rare earth elements,Ag,heterojunction,degradation,"/> <p class="MsoNormal"> <span>g-C</span><sub><span>3</span></sub><span>N</span><sub><span>4</span></sub><span>/CeO</span><sub><span>2</span></sub><span>/Ag</span><span>三元纳米光催化剂的制备及其光催化性能研究</span>

沈阳化工大学学报 ›› 2024, Vol. 38 ›› Issue (2): 103-109.doi: 10.3969/j.issn.2095-2198.2024.02.002

• 化学与化学工程 • 上一篇    下一篇

g-C3N4/CeO2/Ag三元纳米光催化剂的制备及其光催化性能研究

  

  1. (1.沈阳化工大学 化学工程学院，辽宁 沈阳 110142; 2.沈阳化工大学 材料科学与工程学院， 辽宁 沈阳110142)

  • 出版日期:2024-04-30 发布日期:2024-12-31
  • 通讯作者: 高雨
  • 作者简介:礼峥（1995—），男（满族），辽宁沈阳人，硕士研究生在读，主要从事光催化领域的研究.
  • 基金资助:

    国家自然科学基金（51402198,21671139）

Preparation of g-C3N4/CeO2/Ag Ternary Nano-Photocatalyst and Its Photocatalytic Performance

  1. Shenyang University of Chemical Technology, Shenyang 110142, China

  • Online:2024-04-30 Published:2024-12-31

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摘要：

通过简单的水热合成和光沉积方法，设计出将耦合半导体和沉积贵金属粒子两种改性方法集于一身的g-C3N4/CeO2/Ag异质结光催化剂.通过XRD、TEM、UV-Vis DRS等对目标光催化剂进行表征，并通过其在可见光下对有机污染物（以甲基橙为例）的去除效果来评价其光催化活性.结果表明：耦合10.0%CeO2和沉积2.0%Ag的g-C3N4/10.0%CeO2/2.0%Ag异质结光催化剂的催化活性分别是纯g-C3N4和CeO2的2.91倍和2.18倍.光催化活性的提高主要归因于复合材料间异质结构的形成和Ag纳米粒子的引入.

关键词: 光催化')">

光催化, 石墨相氮化碳, 稀土, Ag, 异质结, 降解

Abstract:

A series of g-C3N4/CeO2/Ag heterojunction photocatalysts were designed by combining two modification methods of coupling semiconductor and depositing precious metal particles through simple hydrothermal synthesis and photo deposition.The target photocatalyst was characterized by XRD,TEM and UV-Vis DRS,etc.,and through the removal of organic pollutants (methylene orange as an example) under visible light to evaluate its photocatalytic activity.The statistical results show that the catalytic activity of g-C3N4/10.0% CeO2/2.0 %Ag heterojunction photocatalyst coupled with 10.0 %CeO2 and 2.0 %Ag is 2.91 times and 2.18 times higher than that of pure g-C3N4 and CeO2,respectively.The improvement of photocatalytic activity is mainly attributed to the formation of heterostructures between composite materials and the introduction of Ag nanoparticles.

Key words: photocatalysis')">

photocatalysis, graphite phase carbon nitride, rare earth elements, Ag, heterojunction, degradation

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