降级(电信)
甲基橙
材料科学
化学工程
光催化
异质结
催化作用
二氧化钛
核化学
化学
复合材料
光电子学
有机化学
计算机科学
电信
工程类
作者
Linsheng Zeng,He Zhang,Yongping Luo,Jitao Xu,Jiansheng Chen,Li Wu,Ping Huang,Shunjian Xu
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2021-11-01
卷期号:168 (11): 116520-116520
被引量:6
标识
DOI:10.1149/1945-7111/ac3abc
摘要
In this work, highly ordered titanium dioxide nanotube arrays (TNTs) were first prepared by anodic oxidation method. Then, g-C 3 N 4 /TNTs heterojunctions were prepared by ultrasonically loading graphitic carbon nitride (g-C 3 N 4 ) onto the TNTs. The morphology and crystal structure of TNTs and g-C 3 N 4 /TNTs were characterized by SEM/TEM and XRD. The photoelectrocatalytic (PEC) degradation of methyl orange (MO) by TNTs and g-C 3 N 4 /TNTs was studied in a PEC degradation system. The photocatalytic (PC), electrocatalytic (EC), and PEC degradation properties were compared, and the effect of pollutant concentration on the degradation performance of the catalysts was analyzed. According to the experimental results, the degradation rate of MO with TNTs only reaches 65.1% after 120 min, while the degradation rate of MO with g-C 3 N 4 /TNTs reaches 84.6% in the same time. Due to the synergistic effect of light and electricity, the PEC degradation efficiency of the two catalysts is greater than the sum of PC and EC degradation, proving that g-C 3 N 4 /TNTs heterojunctions provide excellent PEC performance for the degradation of MO.
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