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文章编号:1672-6987(2026)02-0058-07;DOI:10. 16351/j. 1672-6987. 2026. 02. 009
李子祺,袁 勋,朱海光* (青岛科技大学 材料科学与工程学院,山东 青岛 266042)
摘 要:单一的光催化剂存在光生载流子复合效率高、降解污染物的速率低等问题,这极大地 限制了其在光催化领域的应用。基于此,本研究通过简单的物理混合的方法,将超小金纳米 团簇(Au NCs)负载在超薄的 BiOCl 纳米片上,构建了新型的 Z 型 BiOCl /Au NCs 异质结。研究发现,BiOCl/Au NCs 之间形成的 Z 型异质结不仅减少了光生载流子的复合,促进了光生载 流子的分离,还提高了 Au NCs 的光稳定性,使得 BiOCl /Au NCs 异质结表现出优异的光催化 降解水体污染物(甲基橙,MO)性能,其 MO 降解速率是纯 BiOCl的 3 倍。
关键词:金属纳米团簇;光催化技术; Z 型异质结;甲基橙
中图分类号:TQ 110. 3 文献标志码:A
引用格式:李子祺,袁勋,朱海光 . Z 型 BiOCl/Au NCs 异质结的制备及其光催化应用[J]. 青 岛科技大学学报(自然科学版),2026,47(2):58-64.
LI Ziqi, YUAN Xun, ZHU Haiguang. Preparation and photocatalytic application of Z-type BiOCl/Au NCs heterojunction[J]. Journal of Qingdao University of Science and Technology (Natural Science Edition),2026,47(2):58-64.
Preparation and Photocatalytic Application of Z-Type BiOCl/Au NCs Heterojunction
LI Ziqi,YUAN Xun,ZHU Haiguang (College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract:A single photocatalyst has the problems of high photocarrier recombination efficiency and low pollutant degradation rate, which greatly limits its application in photocatalysis. Based on this, a novel Z-type BiOCl/Au NCs heterojunction was constructed by loading ultra-small gold nanoclusters (Au NCs) onto ultra-thin BiOCl nanosheets through a simple physical mixing method. It was found that the Z-type heterojunction formed between BiOCl/Au NCs not only reduces the photogenerated carrier recombination and promotes the separation of photo⁃ generated carriers, but also improves the photostability of Au NCs, making BiOCl/Au NCs composites show excellent photocatalytic degradation performance of water pollutants (methyl orange, MO). The degradation rate of MO was 3 times that of pure BiOCl.
Key words:metal nanoclusters; photocatalytic technology; Z-type heterojunction; methyl orange
收稿日期:2025-06-19
基金项目:青岛科技大学科研启动基金项目(210/010029031,210/010029008).
作者简介:李子祺(1997—),男,硕士研究生 . * 通信联系人 .