用于废水处理的可见光驱动 La/Al 共掺杂氧化锌纳米粒子的燃烧合成与表征

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-12-04 DOI:10.15251/djnb.2023.184.1423

A. Phuruangrat, T. Thongtem, S. Thongtem

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引用次数: 0

摘要

采用酒石酸辅助燃烧法制备了可见光驱动的LaxAl0.03-xZn0.97O (x = 0.01, 0.015和0.02)纳米颗粒。ZnO和La/Al共掺杂ZnO样品均为纯六方纤锌矿ZnO结构，由粒径范围分别为100 ~ 150 nm和20 ~ 50 nm的纳米颗粒组成。研究了ZnO和LaxAl0.03-xZn0.97O (x = 0.01, 0.015和0.02)纳米粒子在可见光下降解亚甲基蓝(MB)的光催化活性。La0.02Al0.01Zn0.97O纳米粒子在可见光照射下降解MB具有最高的光催化活性，这是因为La/Al共掺杂剂在ZnO导带下产生了浅能级。

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Combustion synthesis and characterization of visible-light-driven La/Al co-doped ZnO nanoparticles used for wastewater treatment

Visible-light-driven LaxAl0.03-xZn0.97O (x = 0.01, 0.015 and 0.02) nanoparticles were synthesized by tartaric acid-assisted combustion method. Both ZnO and La/Al co-doped ZnO samples were indexed to the pure hexagonal wurtzite ZnO structure and were composed of nanoparticles with particle size ranges of 100-150 nm and 20-50 nm, respectively. The photocatalytic activities of ZnO and LaxAl0.03-xZn0.97O (x = 0.01, 0.015 and 0.02) nanoparticles were monitored through the degradation of methylene blue (MB) under visible light irradiation. The La0.02Al0.01Zn0.97O nanoparticles have the highest photocatalytic activity in degrading of MB under visible light irradiation because the La/Al co-dopant played the role in creating shallow energy level under the conduction band of ZnO.

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