胡亚微,高慧,王晓芳.g-C3N4/TiO2纳米管阵列的制备及光催化性能的研究[J].表面技术,2018,47(12):113-118.
HU Ya-wei,GAO Hui,WANG Xiao-fang.Preparation and Photocatalytic Performance of g-C3N4/TiO2 Nanotubes Arrays[J].Surface Technology,2018,47(12):113-118
g-C3N4/TiO2纳米管阵列的制备及光催化性能的研究
Preparation and Photocatalytic Performance of g-C3N4/TiO2 Nanotubes Arrays
投稿时间:2018-04-13  修订日期:2018-12-20
DOI:10.16490/j.cnki.issn.1001-3660.2018.12.016
中文关键词:  TiO2纳米管阵列  g-C3N4  光催化活性  阳极氧化  亚甲基蓝
英文关键词:TiO2 nanotube array  g-C3N4  photocatalytic activity  anodic oxidation  methylene blue
基金项目:国家自然科学基金项目(21201115)
作者单位
胡亚微 陕西科技大学 陕西省轻化工助剂重点实验室,西安 710021 
高慧 陕西科技大学 陕西省轻化工助剂重点实验室,西安 710021 
王晓芳 陕西科技大学 陕西省轻化工助剂重点实验室,西安 710021 
AuthorInstitution
HU Ya-wei Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China 
GAO Hui Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China 
WANG Xiao-fang Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 获得在可见光下光催化活性较好,且可回收、可重复利用的光催化材料。方法 在钛基底上采用阳极氧化法制备TiO2纳米管阵列(TiO2 NTAs),将TiO2 NTAs在10%尿素溶液中浸渍不同时间后,在氮气保护下高温热分解,制备g-C3N4/TiO2 NTAs复合薄膜。采用XRD、SEM、TEM对复合薄膜进行物相及形貌的表征,在可见光照射下,通过亚甲基蓝溶液的催化降解实验来评估复合薄膜的光催化活性。结果 在10%尿素溶液中浸渍不同时间后所获得的g-C3N4/TiO2 NTAs样品,其可见光催化活性均较纯TiO2 NTAs有所提高,而且随浸渍时间的增加,其可见光催化活性依次增加。浸渍时间为6 h的g-C3N4/TiO2 NTAs样品,在可见光下的光催化活性最高,在120 min内对亚甲基蓝的降解率可达73%。继续增加浸渍时间,所获得的TiO2 NTAs样品的可见光催化活性有所降低。结论 g-C3N4与TiO2 NTAs复合,可以有效提高TiO2 NTAs的光催化活性,其原因是g-C3N4的复合提高了载流子的传递效率,同时也提高了对可见光的吸收。
英文摘要:
      The work aims to obtain a kind of photocatalytic material with high activity and able to be recycled and reused under visible light. Firstly, TiO2 nanotubes arrays (TiO2 NTAs) were prepared on titanium substrate by anodic oxidation method. Then, g-C3N4/TiO2 NTAs composite films were prepared through high temperature thermal decomposition under nitrogen protection by dipping TiO2 NTAs in 10% urea solution for different time. XRD, SEM and TEM were used to characterize the phase and morphology of the composite films. Under visible light irradiation, the photocatalytic properties of composite films were evaluated by the catalytic degradation experiments of methylene blue solution. The photocatalytic activity of g-C3N4/TiO2 NTAs dipped in the 10 % urea solution for different time was higher than that of pure TiO2 NTAs. Simultaneously, the photocatalytic activity of g-C3N4/TiO2 NTAs was increasing with the increase of dipping time. Moreover, the photocatalytic activity of g-C3N4/TiO2 NTAs dipped in the urea solution for 6 h was the highest under the visible light and the degradation rate of methylene blue could reach 73% for 120 min. With the continuous prolonging of dipping time in urea solution, the photocatalytic activity of g-C3N4/TiO2 NTAs decreased. g-C3N4 combined with TiO2 NTAs can improve the photocatalytic activity of TiO2 NTAs, because the composite g-C3N4 improves the transmission efficiency of carrier and also promotes the absorptance of visible light.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第19514341位访问者    渝ICP备15012534号-3

版权所有:《表面技术》编辑部 2014 surface-techj.com, All Rights Reserved

邮编:400039 电话:023-68792193传真:023-68792396 Email: bmjs@surface-techj.com

渝公网安备 50010702501715号