LaNiO3/TiO2纳米管阵列的电化学制备及其光催化性能

弓   程; 张泽阳; 向思弯; 孙   岚; 叶陈清; 林昌健

doi:10.13208/j.electrochem.181213

电化学 >

2019 , Vol. 25 >Issue 6: 682 - 689

DOI: https://doi.org/10.13208/j.electrochem.181213

研究论文

LaNiO₃/TiO₂纳米管阵列的电化学制备及其光催化性能

弓程 ,
张泽阳 ,
向思弯 ,
孙岚 ,
叶陈清 ,
林昌健

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1. 厦门大学化学化工学院，福建厦门 361005；2. 厦门大学深圳研究院，深圳518000；3. 宁德市师范学院，特色生物化工材料福建省重点实验室，福建宁德 352100

收稿日期: 2018-12-12

修回日期: 2019-01-08

网络出版日期: 2019-12-28

基金资助

国家自然科学基金(No. 21621091)和广东省自然科学基金（No. 2016A030313845）资助

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Electrochemical Preparation and Photocatalytic Performance of LaNiO₃/TiO₂Nanotube Arrays

GONG Cheng ,
ZHANG Ze-yang ,
XIANG Si-wan ,
SUN Lan ,
YE Chen-qing ,
LIN Chang-jian

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1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, China; 2. Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China; 3. Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, Fujian Province, China

Received date: 2018-12-12

Revised date: 2019-01-08

Online published: 2019-12-28

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摘要

利用脉冲电沉积与高温退火相结合的方法制备了镍酸镧(LaNiO₃)纳米颗粒负载的二氧化钛(TiO₂)纳米管阵列. 修饰于TiO₂纳米管阵列上的LaNiO₃纳米颗粒粒径小（< 10 nm）、分布均匀、负载量可控，一些LaNiO₃纳米颗粒沉积于TiO₂纳米管内. 紫外可见吸收光谱显示，LaNiO₃/TiO₂纳米管阵列的吸收带边较TiO₂纳米管阵列明显红移，可见光吸收明显增强. 可见光下光催化降解罗丹明B（RhB）的结果表明，脉冲循环沉积500次制得的LaNiO₃/TiO₂纳米管阵列的光催化活性最佳，其对RhB光催化降解速率是TiO₂纳米管阵列的3.5倍，并且表现出极好的光催化稳定性.

关键词： LaNiO₃纳米颗粒; TiO₂纳米管阵列; 可见光光催化; 罗丹明B

本文引用格式

弓程 , 张泽阳 , 向思弯 , 孙岚 , 叶陈清 , 林昌健 . LaNiO₃/TiO₂纳米管阵列的电化学制备及其光催化性能[J]. 电化学, 2019 , 25(6) : 682 -689 . DOI: 10.13208/j.electrochem.181213

Abstract

The LaNiO₃/TiO₂ nanotube arrays were prepared by pulse electrodeposition combined with high temperature annealing. The LaNiO₃ nanoparticles modified on the TiO₂ nanotube arrays had small particle size (< 10 nm), uniform distribution and controllable loading. Some LaNiO3 nanoparticles were deposited inside the TiO₂ nanotubes. The UV-visible absorption spectra displayed that the absorption band edge of LaNiO₃/TiO₂nanotube arrays was obviously red-shifted as compared with that of TiO₂ nanotube arrays, and the visible light absorption was enhanced significantly. The photocatalytic degradation results of rhodamine B (RhB) under visible light showed that the LaNiO₃/TiO₂nanotube arrays prepared by pulse electrodeposition for 500 cycles had the optimum photocatalytic activity, and the photocatalytic degradation rate of RhB was 3.5 times that of TiO₂ nanotube arrays. Furthermore, the LaNiO₃/TiO₂nanotube arrays presented the excellent photocatalytic stability.

Key words： LaNiO₃ nanoparticles; TiO₂ nanotube arrays; visible-light-induced photocatalysis; rhodamine B

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