|本期目录/Table of Contents|

 Photocatalytic Performance of TiO2 Film Prepared from Single Crystal TiN Nanoparticles(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2012年4期
页码:
298-301
栏目:
纳米技术
出版日期:
2012-07-15

文章信息/Info

Title:
单晶TiN颗粒为前驱体制备TiO2薄膜及其光催化性能
作者:
 SU Jingyang1 YU Hongtao1 MA Bin1 QUAN Xie1 DONG Xinglong2 HUANG Hao2
 (1. Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China;
2. School of Material Science and Technology, Dalian University of Technology, Dalian 116024, China)
Author(s):
苏景扬1 于洪涛1 马彬1 全燮1 董星龙2 黄昊2
(1. 大连理工大学环境学院工业生态与环境工程教育部重点实验室, 大连116024;
2. 大连理工大学材料科学与工程学院, 大连116024)
关键词:
 TiO2 photocatalysis TiN anneal
Keywords:
二氧化钛光催化氮化钛退火
分类号:
-
DOI:
-
文献标识码:
A
摘要:
 In order to develop TiO2 film photocatalyst with high photocatalytic activity, uniform TiO2 film was prepared by annealing TiN film, which was fabricated by a facile method including two steps: putting Ti wafer into a stable TiN nanoparticle suspension and then drying this system to obtain TiN/Ti film. The annealing temperature was optimized and the optimal one was 500 ℃. TiO2 prepared at the temperature had a polycrystalline anatase structure, and its absorption edge was about 400 nm. The photocatalytic degradation efficiency of phenol on the TiO2 film was up to 88% in 3 h, whereas it was only 62% on TiO2-P25. The kinetic constant of phenol degradation on the TiO2 film was 2.2 times as great as that on TiO2-P25. Hence, the TiO2 film displayed better photocatalytic ability than TiO2-P25 film.
Abstract:
为了开发高活性的二氧化钛(TiO2)光催化剂,通过简易的两步法制备了TiO2 薄膜.首先将钛片放入氮化钛(TiN)纳米颗粒悬浮液中,然后干燥这一体系制得TiN/Ti 薄膜,最后通过煅烧TiN 薄膜前驱体制备了平整均一的二氧化钛(TiO2)薄膜.通过考察退火温度对样品光吸收性能的影响,确定最优退火温度为500 ℃.在此条件下制备的TiO2 为多晶锐钛矿,吸收边带400 nm.以制备的TiO2 薄膜为催化剂,3 h 内苯酚的降解率达到88%,远大于使用德固赛TiO2 (P25)时的62%,制备的二氧化钛薄膜比P25 显示出更优良的光催化性能,其光催化降解苯酚的动力学常数为P25 的2.2 倍.

参考文献/References

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2012-11-14