Enhanced pollutant photodegradation over nanoporous titanium-vanadium oxides with improved interfacial interactions

光降解 纳米孔 污染物 材料科学 光催化 化学工程 无机化学 化学 催化作用 纳米技术 冶金 有机化学 工程类
作者
Milad Laghaei,Mohsen Ghasemian,Mahmoud Reza Ghandehari Ferdowsi,Jürg A. Schütz,Lingxue Kong
出处
期刊:Journal of Colloid and Interface Science [Elsevier BV]
卷期号:646: 11-24 被引量:10
标识
DOI:10.1016/j.jcis.2023.04.180
摘要

This study addressed the separation problem of colloidal catalytic powder from its solution and pore blockage of traditional metallic oxides by fabricating nanoporous composites of titanium (Ti)-vanadium (V) oxide via magnetron sputtering, electrochemical anodization, and annealing processes. The effect of V-deposited loading on the composite semiconductors was investigated by varying V sputtering power (20-250 W) to correlate their physicochemical properties to the photodegradation performance of methylene blue. The obtained semiconductors revealed circular and elliptical pores (14-23 nm) and formed different metallic and metallic oxide crystalline phases. Within the nanoporous composite layer, V ions substituted Ti4+, leading to Ti3+ formation accompanied by decreased band gap values and higher visible-light absorption. Thus, the band gap of TiO2 was 3.15 eV, while that of Ti-V oxide with the maximum V content (at 250 W) was 2.47 eV. The interfacial separators between clusters in the mentioned composite created traps disrupting the charge carrier movements between crystallites, thereby decreasing the photoactivity. In contrast, the composite prepared with the minimum V content showed approximately 90% degradation efficiency under solar-simulated irradiation resulting from the homogeneous V dispersion and the lower recombination possibility, owing to its p-n heterojunction constituent. The nanoporous photocatalyst layers with their novel synthesis approach and outstanding performance can be applied in other environmental remediation applications.

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
车 干发布了新的文献求助10
1秒前
Lucas应助旋881采纳,获得10
2秒前
2秒前
jamin发布了新的文献求助10
3秒前
4秒前
5秒前
平常的若雁完成签到,获得积分10
9秒前
袁涛发布了新的文献求助10
9秒前
慕青应助li采纳,获得10
12秒前
Akim应助肖肖采纳,获得10
12秒前
14秒前
shihuili发布了新的文献求助20
14秒前
15秒前
17秒前
CipherSage应助qq采纳,获得10
18秒前
Ricey完成签到,获得积分10
18秒前
19秒前
www发布了新的文献求助10
19秒前
小马甲应助矛头蝮采纳,获得10
20秒前
猫瑾完成签到,获得积分10
21秒前
旋881发布了新的文献求助10
21秒前
21秒前
小蘑菇应助空山新雨采纳,获得10
23秒前
23秒前
25秒前
肖肖发布了新的文献求助10
27秒前
量子星尘发布了新的文献求助10
28秒前
林昀完成签到 ,获得积分10
29秒前
shihuili完成签到,获得积分10
30秒前
YYJ发布了新的文献求助10
30秒前
wiwi发布了新的文献求助10
31秒前
雪球1248完成签到,获得积分10
32秒前
34秒前
36秒前
yedu完成签到,获得积分10
37秒前
37秒前
wangqianyu发布了新的文献求助30
39秒前
Leonard完成签到 ,获得积分10
40秒前
旋881完成签到,获得积分10
41秒前
42秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 330
Composite Predicates in English 300
Aktuelle Entwicklungen in der linguistischen Forschung 300
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 3984177
求助须知:如何正确求助?哪些是违规求助? 3527512
关于积分的说明 11236662
捐赠科研通 3265748
什么是DOI,文献DOI怎么找? 1802841
邀请新用户注册赠送积分活动 880631
科研通“疑难数据库(出版商)”最低求助积分说明 808217