Photocatalytic indoor/outdoor air treatment and bacterial inactivation on CuxO/TiO2 prepared by HiPIMS on polyester cloth under low intensity visible light

高功率脉冲磁控溅射 材料科学 X射线光电子能谱 溅射沉积 可见光谱 光催化 光化学 溅射 涂层 化学工程 化学 薄膜 光电子学 纳米技术 催化作用 有机化学 工程类
作者
M. Abidi,Aymen Amine Assadi,Abdelkrim Bouzaza,Anouar Hajjaji,B. Bessaı̈s,Sami Rtimi
出处
期刊:Applied Catalysis B-environmental [Elsevier BV]
卷期号:259: 118074-118074 被引量:70
标识
DOI:10.1016/j.apcatb.2019.118074
摘要

In this study, photoactive CuxO/TiO2 coatings were prepared using magnetron sputtering operated at different powers and modes (Direct-current magnetron sputtering and High Power Impulse magnetron sputtering). Indoor/outdoor air pollutions (Volatile Organic Compounds, VOCs) degradation have been dramatically reduced on sputtered CuxO/TiO2 on polyester (PES) cloth under low intensity visible light. The Low intensity visible light was used to irradiate the sputtered photocatalysts, which degraded various VOC molecules concomitant with a bacterial inactivation ability. The VOC removal kinetics were studied in the dark and under visible light as a function of the deposition time and applied peak currents during the coating by HiPIMS. High concentrations of chloroform and butyraldehyde were shown to be degraded (90% and 85%, respectively) on CuxO/TiO2-PES fabrics under daylight irradiation. The repetitive reuse of the sputtered coatings was also investigated showing the long operational lifetime of the prepared fabrics. The deposition rates of Ti and Cu atoms and their atomic distribution along the sputtered film have been investigated by Transmission Electronic Microscopy (TEM). Redox catalysis was shown to happen within the VOC degradation time as detected by X-ray Photoelectron Spectroscopy (XPS). Deconvolution of the Cu2p3/2 peak in the CuxO/TiO2 on PES samples showed changes in the Cu2O and CuO within the VOCs degradation and the bacterial inactivation. The interfacial charge transfer (IFCT) between CuxO induced under light leading to VOCs oxidation path seemed to require a low photons energy and were able to oxidize the pollutants even at high concentrations. The mechanisms involving the VOCs degradation on CuxO/TiO2 catalysts are suggested in which the holes generated by Cu2O transfer to TiO2 in the TiO2(n)/CuxO(p) in the hetero-junction. This transfer is favored by the electrostatic interaction between both semiconductors. The photo-generated ROS, mainly ⦁OH-radicals were determined by fluorescence method. The possible contribution of the ⦁OH-radicals in the bacterial inactivation on the sputtered CuxO/TiO2 catalysts was discussed. DRS, TEM, contact angle (CA) and XPS were used to characterize the catalyst optical and structural properties.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
鲍文启完成签到 ,获得积分10
刚刚
王小贝发布了新的文献求助10
刚刚
2秒前
开心的中心完成签到,获得积分10
2秒前
lyric应助安居宝采纳,获得10
2秒前
2秒前
3秒前
安静的幻然关注了科研通微信公众号
3秒前
pathetic宣宣完成签到,获得积分20
4秒前
4秒前
zyl完成签到 ,获得积分10
4秒前
嗨嗨害完成签到,获得积分10
4秒前
李健应助wcwzcz采纳,获得30
4秒前
kelvin发布了新的文献求助10
5秒前
5秒前
超级大帅比完成签到,获得积分10
6秒前
李健应助光亮元枫采纳,获得10
6秒前
6秒前
howgoods完成签到 ,获得积分10
7秒前
墨菲特发布了新的文献求助10
7秒前
刘欢发布了新的文献求助10
7秒前
研友_VZGvVn发布了新的文献求助10
7秒前
dnchenchen完成签到,获得积分10
7秒前
7秒前
8秒前
8秒前
朝花夕拾发布了新的文献求助10
8秒前
852应助会撒娇的芷烟采纳,获得10
8秒前
烟花应助香芋派采纳,获得10
8秒前
9秒前
9秒前
wtg完成签到,获得积分10
11秒前
11秒前
11秒前
双洁完成签到,获得积分10
12秒前
星辰大海应助甜美不评采纳,获得10
12秒前
oligo完成签到 ,获得积分10
12秒前
Victor发布了新的文献求助30
13秒前
DEYING发布了新的文献求助10
13秒前
13秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Toward a Combinatorial Approach for the Prediction of IgG Half-Life and Clearance 500
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970062
求助须知:如何正确求助?哪些是违规求助? 3514782
关于积分的说明 11175968
捐赠科研通 3250119
什么是DOI,文献DOI怎么找? 1795198
邀请新用户注册赠送积分活动 875630
科研通“疑难数据库(出版商)”最低求助积分说明 804951