The morphology control and full-spectrum photodegradation tetracycline performance of microwave-hydrothermal synthesized BiVO4:Yb3+,Er3+ photocatalyst

Q3 Energy

燃料化学学报 Pub Date : 2025-03-01 DOI:10.1016/S1872-5813(24)60514-1

Jiahui YU, Jixian DONG, Yutong ZHAO, Fuping ZHAO, Bo GE, Xipeng PU, Dafeng ZHANG

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引用次数: 0

Abstract

By adjusting the pH value of the precursor solution, different morphologies of BiVO₄:Yb³⁺,Er³⁺-X (BYE-X) were successfully synthesized via a facile microwave hydrothermal method. Tetracycline was employed as a model pollutant to evaluate the full-spectrum photocatalytic activity of BYE-X samples. The experimental results revealed that when the pH ranged from 3 to 8, BYE showed pure monoclinic BiVO₄ phase. At pH values of 10–12, the synthesized samples had mixed phases of Bi₂O(OH)(VO₄), Bi₂O₃, and BiVO₄. In addition, a notable variation in the morphological characteristics of BYE was observed with the increasing pH values. The samples of different pH values showed obvious up-conversion luminescence. Due to the up-conversion of Er³⁺ and Yb³⁺, the near-infrared (NIR) light was effectively utilized, successfully broadening the light response range. Under the visible or NIR light irradiation, BYE-5 demonstrated the optimal photodegradation activity. Based on the experimental results, a mechanism for full-spectrum photocatalysis was proposed. This work provides a feasible approach to improve the solar light utilization rate of semiconductor catalysts, thereby achieving efficient full-spectrum photocatalytic activity.

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微波水热合成BiVO4:Yb3+，Er3+光催化剂的形貌控制及全光谱光降解四环素性能

通过调整前驱体溶液的pH值，通过简易微波水热法成功合成了不同形态的BiVO4:Yb3+，Er3+-X （BYE-X）。以四环素为模型污染物，评价了BYE-X样品的全光谱光催化活性。实验结果表明，当pH为3 ~ 8时，BYE为纯单斜BiVO4相。在pH值为10 ~ 12时，合成的样品具有Bi2O(OH)（VO4）、Bi2O3和BiVO4的混合相。此外，随着pH值的增加，BYE的形态特征也发生了显著的变化。不同pH值的样品均表现出明显的上转换发光。由于Er3+和Yb3+的上转换，有效地利用了近红外（NIR）光，成功地拓宽了光响应范围。在可见光和近红外光照射下，BYE-5的光降解活性最佳。根据实验结果，提出了一种全光谱光催化机理。本工作为提高半导体催化剂的太阳光能利用率，从而实现高效的全光谱光催化活性提供了可行的途径。

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来源期刊

燃料化学学报 Chemical Engineering-Chemical Engineering (all)

CiteScore

2.80

自引率

0.00%

发文量

5825

期刊介绍： Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.