水资源与水工程学报

文章摘要

李运林,张超,周蕾,周明华.两步阳极氧化制备TiO₂纳米管的光电催化产氢性能研究Journal of Water Resources and Water Engineering[J].,2013,24(1):64-68

两步阳极氧化制备TiO₂纳米管的光电催化产氢性能研究

Study on photoelectrocatalytic hydrogen generation performance of TiO_2nanotubes made by two-step anodization

Received:October 28, 2012 Revised:December 10, 2012

DOI：10.11705/j.issn.1672-643X.2013.01.014

英文关键词: titania nanotubes photo-to-hydrogen conversion efficiency photoelectrocatalytic organic pollutant hydrogen generation

基金项目:国家自然科学基金项目(51178225、21273120)；教育部博士点基金项目(20110031110025)；天津市自然科学基金项目(09JCYBJC08000)

Author Name	Affiliation
LI Yunlin	Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China [KH*2D]
ZHANG Chao	Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China [KH*2D]
ZHOU Lei	Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China [KH*2D]
ZHOU Minghua	Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China [KH*2D]

Hits: 1873

Download times: 1022

中文摘要:

利用两步电化学阳极氧化法制备了TiO₂纳米管(TNT),并比较了其与一步阳极氧化法制备的TNT形貌特征和光电催化活性。结果表明:两步氧化法制得的TNT较一步阳极氧化法制得的TNT形貌有较大的差异, 两步氧化后TNT平均管长和管径略有增加,分别达到7.67μm和72.12nm,而管壁厚度则减少到16.36nm,这导致长径比从59.73显著增加到104.83。相应地,其光-氢转化效率也从0.14%显著增加到0.36%。而目标污染物乙二醇的存在进一步提升了TNT的光电催化降解污染物同时产氢的活性。因此,两步阳极氧化法是一种简单有效改善TNT结构特征和光电催化性能的有效方法,在光电催化降解污水中的有机污染物同时产氢方面有应用前景。

英文摘要:

Titania nanotube was prepared by two-step anodization process, and compared morphology features and photoelectrocatalytic activity of TNT fabricated by one-step anodization process. The results suggested that TNT fabricated by two-step anodization processes exhibited bigger difference in morphology features in comparison with TNT prepared by one-step anodization process. The average tube length and diameter of TNT fabricated by two-step anodization processes displayed a little increase than those of TNT fabricated by one-step anodization process, and were 7.67μm and 72.12nm respectively. The wall thickness decreased to 16.36nm, which resulted in increase of aspect ratio from 59.73to 104.83. Correspondingly, the photon-to-hydrogen conversion efficiency significantly increased from 0.14% to 0.36%. Moreover, the presence of ethylene glycol as target pollutant further enhanced the photoelectrocatalytic activity of pollutant degradation and hydrogen generation of TNT. Thus, two-step anodization processes is a simple and effective method to improve the morphology features and photoelectrocatalytic performance of TNT and have an application prospect in photoelectrocatalytic degradation of organic pollutants and simultaneous hydrogen generation.

View Full Text View/Add Comment Download reader