Apo/PbSe复合材料的制备及其光催化性能

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (12): 4469-4476.

所属专题：新型功能材料

Apo/PbSe复合材料的制备及其光催化性能

樊云祥¹, 刘瑞杰¹, 谢佳², 谢银德¹

1.郑州大学材料科学与工程学院,郑州 450002;
2.郑州大学国际学院,郑州 450002

收稿日期:2022-07-24 修订日期:2022-09-02 出版日期:2022-12-15 发布日期:2023-01-11
通信作者: 谢银德,博士,副教授。E-mail:ydxie@zzu.edu.cn
作者简介:樊云祥(2000—),男,硕士研究生。主要从事仿生纳米材料制备及光催化的研究。E-mail:2966265504@qq.com
基金资助:
河南省科技攻关专项(192102210049)

Preparation and Photocatalytic Properties ofApoferritin/PbSe Composites

FAN Yunxiang¹, LIU Ruijie¹, XIE Jia², XIE Yinde¹

1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China;
2. International College, Zhengzhou University, Zhengzhou 450002, China

Received:2022-07-24 Revised:2022-09-02 Online:2022-12-15 Published:2023-01-11

摘要/Abstract

摘要： 利用脱铁铁蛋白制备的纳米材料具有尺寸可控、单一等优点,在催化方面同样具有很大优势。本文以脱铁铁蛋白为模板,硒脲为硒源,乙酸铵与乙酸铅为原料,通过模板合成法和两步法制备脱铁铁蛋白/硒化铅(apo/PbSe)复合材料,采用透射电子显微镜(TEM)、X射线衍射仪(XRD)、X射线能谱仪(EDS)、紫外-可见分光光度计(UV-vis)、荧光光谱仪(PL)等手段分析材料,并测定了apo/PbSe复合材料在可见光下对废水染料甲基橙的催化降解性能。结果表明,蛋白质内部的矿物核心主要物质为PbSe,成功合成了apo/PbSe复合光催化剂。复合光催化剂的最佳实验条件为溶液pH=3.0,H₂O₂质量分数9%,此时对甲基橙的降解效率最高可达97.10%,五次循环降解实验证明了其光催化效率的稳定性。基于以上结果,说明apo/PbSe具有良好的催化活性和稳定性,并提出了apo/PbSe复合材料对甲基橙的光催化降解机理。

关键词: 脱铁铁蛋白, PbSe, 复合材料, 光催化, 催化机理

Abstract: Nano materials prepared by using apoferritin have the advantages of controllable size and single structure, and also have great advantages in catalysis. In this paper, apoferritin/lead selenide (apo/PbSe) composites were prepared by template synthesis and two-step method, with the template of apoferritin, the selenium source of selenium urea, the raw materials of ammonium acetate and lead acetate. The materials were analyzed by transmission electron microscopy (TEM), X-ray diffractometer (XRD), energy dispersive X-ray spectroscopy (EDS), ultraviolet visible spectrophotometer (UV-vis) and fluorescence spectrometer (PL). The catalytic degradation performance of apo/PbSe composites for the wastewater dye methyl orange under visible light was measured. The results show that the main mineral core in the protein is PbSe, and the apo/PbSe composite photocatalyst is successfully synthesized. The best experimental conditions of the composite photocatalyst are pH=3.0, H₂O₂ mass fraction of 9%, and the degradation efficiency of methyl orange can reach 97.10%. The stability of photocatalytic efficiency is proved by five cycle degradation experiments. Based on the above results, it is shown that apo/PbSe has good catalytic activity and stability, and the photocatalytic degradation mechanism of methyl orange by apo/PbSe composite is proposed.

Key words: apoferritin, PbSe, composite, photocatalytic, catalytic mechanism

中图分类号:

樊云祥, 刘瑞杰, 谢佳, 谢银德. Apo/PbSe复合材料的制备及其光催化性能[J]. 硅酸盐通报, 2022, 41(12): 4469-4476.

FAN Yunxiang, LIU Ruijie, XIE Jia, XIE Yinde. Preparation and Photocatalytic Properties ofApoferritin/PbSe Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(12): 4469-4476.

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Apo/PbSe复合材料的制备及其光催化性能

Preparation and Photocatalytic Properties ofApoferritin/PbSe Composites

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