Catalytic and SERS activities of WO3-based nanowires: the effect of oxygen vacancies, silver nanoparticle doping, and the type of organic dye

拉曼光谱 兴奋剂 材料科学 光催化 光化学 三氧化钨 纳米结构 纳米线 氧气 纳米技术 银纳米粒子 纳米颗粒 催化作用 化学工程 无机化学 化学 有机化学 光电子学 冶金 工程类 物理 光学
作者
Oguzhan Ustun,Aslı Yilmaz,Mehmet Yılmaz
出处
期刊:Physical Chemistry Chemical Physics [Royal Society of Chemistry]
卷期号:24 (31): 18615-18626 被引量:21
标识
DOI:10.1039/d2cp00034b
摘要

Oxygen vacancies in tungsten trioxide (WO3) nanostructures (WO3-x) dominate the major characteristics of the material and determine their activity in various applications including photocatalysis and surface-enhanced Raman spectroscopy (SERS). Despite some studies performed in the last decade, the photocatalytic activity toward different pollutants and SERS activity toward different Raman reporter molecules are still unclear and may provide valuable insights into this research field. Therefore, in this study, we propose WO3-x nanowires (NWs) both as ideal photocatalysts for the degradation of organic pollutants such as crystal violet (CV), methylene blue (MB), malachite green (MG), and rhodamine 6G (R6G) and a SERS platform for the detection of these molecules. In the first step, WO3-x NWs were fabricated through the solvothermal method. Afterward, the oxygen vacancy content of WO3-x NWs was manipulated by the addition of silver ions or H2O2. Although H2O2 led to a remarkable decrease in oxygen vacancies (WO3), the addition of silver ions led to the formation of Ag nanostructures on WO3-x NWs (WO3-x@Ag). Interestingly, the combination of WO3-x and WO3-x@Ag nanosystems with all dye molecules resulted in the formation of H-aggregates due to the strong electrostatic interaction between the nanostructure and dye molecules and then its photocatalytic degradation, while regular degradation of dyes was observed for WO3. In SERS activity tests, each NP system exhibited different activities depending on various parameters including the chemical nature of the nanosystem, the degree of oxygen vacancy, the interaction of the Raman reporter molecule with the surface of the NP, and the resultant formation of H-aggregates or photocatalytic degradation. The combination of MB with WO3-x, WO3-x@Ag, and WO3 created enhancement factors such as 1.6 × 103, 5.4 × 103, and 6.2 × 103, respectively. This report showed that the parameters mentioned here must be considered in detail to evaluate the photocatalytic and SERS activity of the WO3-based nanosystem.
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
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
Orange应助WQ采纳,获得10
刚刚
刚刚
w7完成签到,获得积分10
1秒前
2秒前
lengchitu完成签到,获得积分10
2秒前
集力申发布了新的文献求助100
2秒前
3秒前
3秒前
丘比特应助xxxx采纳,获得10
3秒前
4秒前
4秒前
4秒前
zxe发布了新的文献求助10
5秒前
科研通AI6.2应助karaha采纳,获得10
5秒前
木川发布了新的文献求助10
7秒前
7秒前
dimples发布了新的文献求助10
8秒前
8秒前
Amanda发布了新的文献求助10
8秒前
9秒前
大虫子完成签到,获得积分10
9秒前
11秒前
11秒前
wanci应助忧伤的小天鹅采纳,获得10
11秒前
科研菜鸟发布了新的文献求助10
11秒前
11秒前
冯小路发布了新的文献求助10
12秒前
FashionBoy应助jayna采纳,获得10
13秒前
研友_VZG7GZ应助King强采纳,获得10
13秒前
13秒前
13秒前
14秒前
14秒前
XXXX发布了新的文献求助10
14秒前
15秒前
Aniya完成签到,获得积分10
15秒前
眯眯眼的鸽子完成签到,获得积分20
15秒前
orixero应助静静采纳,获得10
16秒前
LiuHao发布了新的文献求助10
16秒前
小高完成签到,获得积分20
16秒前
高分求助中
(应助此贴封号)【重要!!请各用户(尤其是新用户)详细阅读】【科研通的精品贴汇总】 10000
Chemistry and Physics of Carbon Volume 18 800
The Organometallic Chemistry of the Transition Metals 800
Leading Academic-Practice Partnerships in Nursing and Healthcare: A Paradigm for Change 800
The formation of Australian attitudes towards China, 1918-1941 640
Signals, Systems, and Signal Processing 610
全相对论原子结构与含时波包动力学的理论研究--清华大学 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 纳米技术 工程类 有机化学 化学工程 生物化学 计算机科学 物理 内科学 复合材料 催化作用 物理化学 光电子学 电极 细胞生物学 基因 无机化学
热门帖子
关注 科研通微信公众号,转发送积分 6432994
求助须知:如何正确求助?哪些是违规求助? 8248524
关于积分的说明 17543255
捐赠科研通 5490370
什么是DOI,文献DOI怎么找? 2896812
邀请新用户注册赠送积分活动 1873417
关于科研通互助平台的介绍 1713682