摘要
采用浸渍法将铁基超导材料β-FeSe合金粒子负载于石墨相氮化碳(g-C_(3)N_(4)),制备出FeSe/g-C_(3)N_(4)复合光催化剂。采用X射线衍射仪(XRD)和X射线光电子能谱(XPS)对复合材料的结构和性质进行了表征,研究了复合材料可见光下的催化活性。结果表明:FeSe/g-C_(3)N_(4)复合材料比g-C_(3)N_(4)和FeSe表现出更高的光催化活性,对甲基橙的降解率达到87.5%。此外,复合材料在循环实验中表现出良好的降解稳定性。基于荧光光谱和能带结构,提出了一种可能的机制,即g-C_(3)N_(4)受光激发产生的光生电子向FeSe转移,有效地抑制了g-C_(3)N_(4)光生电子空穴对的复合,延长了载流子的寿命。
FeSe/g-C_(3)N_(4) composite photocatalyst was prepared by impregnating the iron-based superconductorβ-FeSe alloy particles onto g-C_(3)N_(4).The structure and properties of the composite were characterized by X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The catalytic activity of the composite under visible light was investigated.The results showed that FeSe/g-C_(3)N_(4) exhibited higher photocatalytic activity than g-C_(3)N_(4) and FeSe,and the degradation rate of methyl orange reached 87.5%.In addition,the composite showed good degradation stability in the cyclic test.Based on the fluorescence spectrum and band gap structure,apossible mechanism was proposed,which was the transfer of photogenerated electrons from g-C_(3)N_(4) excited by light to FeSe,effectively inhibiting the recombination of photogenerated electron hole pairs of g-C_(3)N_(4) and prolonging the carrier lifetime.
作者
王勇
陈桂华
Wang Yong;Chen Guihua(School of Pharmaceutical and Materials Engineering,Taizhou University,Jiaojiang 318000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2021年第8期132-135,139,共5页
New Chemical Materials
基金
浙江省自然科学基金项目(LY19E020002)
台州市科技计划项目(1802gy07)。
