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在可见光照射下，三元 AgO/AgBr-CeO 光催化剂对有机染料和四环素的光催化降解。

Photocatalytic degradation of organic dye and tetracycline by ternary AgO/AgBr-CeO photocatalyst under visible-light irradiation.

机构信息

Nanjing Tech University, Nanjing, 211800, People's Republic of China.

School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, People's Republic of China.

出版信息

Sci Rep. 2021 Jan 8;11(1):85. doi: 10.1038/s41598-020-76997-0.

DOI:10.1038/s41598-020-76997-0
PMID:33420105
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7794347/
Abstract

In this work, CeO nanosheets decorated with AgO and AgBr are successfully fabricated via a simple sediment-precipitation method. The as-prepared ternary AgO/AgBr-CeO composite with double Z-scheme construction was analyzed by various analytical techniques. Ag nanoparticles (NPs) used as the electron medium could reduce the recombination of photoelectrons and holes, thus leading to the improvement of photocatalytic performance of these catalysts. Due to the unique structure and composite advantages, the optimal AgO/AgBr-CeO photocatalysts exhibit the superior tetracycline (TC) degradation efficiency of 93.23% and favorable stability with near-initial capacity under visible light irradiation. This ternary Z-scheme structure materials will be the well-promising photocatalysts or the purification of antibiotic wastewater.

摘要

在这项工作中，通过简单的沉淀法成功制备了 CeO 纳米片负载 AgO 和 AgBr 的复合材料。采用多种分析技术对所制备的具有双 Z 型结构的三元 AgO/AgBr-CeO 复合材料进行了分析。Ag 纳米粒子（NPs）作为电子介质可以减少光生电子和空穴的复合，从而提高这些催化剂的光催化性能。由于其独特的结构和复合优势，最佳的 AgO/AgBr-CeO 光催化剂在可见光照射下具有高达 93.23%的四环素（TC）降解效率和良好的稳定性，几乎保持了初始降解能力。这种三元 Z 型结构材料将成为有前途的光催化剂或抗生素废水的净化剂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/f9c7053ba3a4/41598_2020_76997_Sch2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/8ea9b27b44fe/41598_2020_76997_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/fdb802f4e8e5/41598_2020_76997_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/a1a09ea2486a/41598_2020_76997_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/bb07a47b991d/41598_2020_76997_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/eec3c41fbfd3/41598_2020_76997_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/f51173f78654/41598_2020_76997_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/e23046ab6c68/41598_2020_76997_Sch1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/f9c7053ba3a4/41598_2020_76997_Sch2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/8ea9b27b44fe/41598_2020_76997_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/fdb802f4e8e5/41598_2020_76997_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/a1a09ea2486a/41598_2020_76997_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/bb07a47b991d/41598_2020_76997_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/eec3c41fbfd3/41598_2020_76997_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/f51173f78654/41598_2020_76997_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/e23046ab6c68/41598_2020_76997_Sch1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b42/7794347/f9c7053ba3a4/41598_2020_76997_Sch2_HTML.jpg

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