A Novel Z-Scheme Ag3PO4/SrTiO3 Heterojunction for Highly Efficient Photocatalytic Degradation

IF 3.7 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2025-02-11 DOI:10.1002/aoc.70041

Yanzhi Zheng, Yu Sun, Zihan Yang, Yuqing Liu, Xiaotong Sun, Lixia Li, Wanning Cao, Jingkai Yang

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Abstract

There are still challenges to eliminate and reduce the harmful persistent organic pollutants (POPs) in the water, especially the dye-based POPs. Two big obstacles the Ag₃PO₄ photocatalyst faces are serious carrier recombination and photocorrosion, which presents a limitation for its application in water purification. Therefore, in this work, a novel Ag₃PO₄/SrTiO₃ heterojunction was synthesized by a simple in situ deposition method. Ag₃PO₄/SrTiO₃ 10:1 exhibits the highest photocatalytic activity with rhodamine B (RhB) degradation of 98.8% in only 20 min and methyl orange (MO) degradation of 97.5% in 80 min under simulated sunlight irradiation, which is much higher than that of pure Ag₃PO₄ and the mixed photocatalysts. During the photocatalytic reaction, h⁺ and •O₂⁻ are the main active species, and the charge transfer path is satisfied with the Z-scheme mechanism. Additionally, the possible degradation pathways of RhB and MO were proposed by analyzing the intermediate products via HPLC-MS.

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新型Z-Scheme Ag3PO4/SrTiO3异质结用于高效光催化降解

消除和减少水中有害的持久性有机污染物，特别是染料类持久性有机污染物仍然面临挑战。Ag3PO4光催化剂面临的两大障碍是严重的载流子复合和光腐蚀，这限制了其在水净化中的应用。因此，本文采用原位沉积的方法合成了一种新型的Ag3PO4/SrTiO3异质结。在模拟日光照射下，Ag3PO4/SrTiO3 10:1的光催化活性最高，在20 min内对罗丹明B （RhB）的降解率为98.8%，在80 min内对甲基橙（MO）的降解率为97.5%，远高于纯Ag3PO4和混合光催化剂。在光催化反应中，h+和•O2−是主要的活性物质，电荷转移路径符合Z-scheme机制。此外，通过HPLC-MS对中间产物进行分析，提出了RhB和MO可能的降解途径。

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.