Phase Transition and Photocatalytic Activity of Hydrothermally-Synthesized LaPO₄ Nanorods
Ji-Yun Xiang1, Ke Zhang1, Zhong-Qi Zhu1
1Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials Science and Engineering, Yunnan University, Kunming 650091, China.
Abstract:
Monoclinic and hexagonal LaPO₄ nanorods were prepared through hydrothermal method without the assistance of additives. The products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). Monoclinic and hexagonal LaPO₄ nanorods can be achieved by adjusting the hydrothermal temperature and the pH value. The photocatalytic activity of monoclinic and hexagonal LaPO₄ nanorods on rhodamine B (RB) and Congo red (CR) under UV irradiation was investigated, respectively. Interestingly, the monoclinic and hexagonal phase shows different photocatalytic performance for the photodegradation of the organic RB and CR dye.
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