Luminescent carbon dots obtained from cellulose and their applications as sensors for metal ions

发光 材料科学 水溶液中的金属离子 碳纤维 纤维素 化学工程 光电子学 金属 纳米技术 离子 化学 有机化学 复合数 工程类 复合材料 冶金
作者
Alessandra Pires Passos Zattar,João Paulo de Mesquita,Fabiano Vargas Pereira
出处
期刊:Materials Chemistry and Physics [Elsevier BV]
卷期号:290: 126633-126633 被引量:6
标识
DOI:10.1016/j.matchemphys.2022.126633
摘要

Carbon dots (CDs) can be obtained from different sources including wastes and green biomass materials, which, together with the method of preparation, can contribute to reduce the cost of production of these nanomaterials. In this work we have prepared different CDs from cellulose and using hydrothermal carbonization. The obtained nanocarbons were functionalized to enhance the quantum yield (QY) by two different methods: in a one pot reaction where the CDs were obtained in the presence of certain amount of ammonia or through a reaction with a oligomeric poly(ethylene glycol) diamine (PEG1500 N) after the preparation of CDs. The obtained CDs were characterized by different techniques including Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), UV-VIS spectroscopy, Fluorescence, and Potentiometric Titration. Size distribution measurements from isolated nanoparticles showed that the different obtained CDs presented a narrow size distribution, with the diameters in the range 0.7–3.0 nm. The CDs which presented high values of QY were used as probes for different metal ions, showing considerable selectivity and sensitivity for Fe 3+ ions and a limit of detection of 0.15 μM in the case of CDs modified with PEG1500 N oligomers. Finally, the results presented here show the possibility to obtain CDs with a relatively low cost method, using only water as solvent and with potential applications in different areas including those as probe for metal ions. • Carbon dots (CDs) were obtained from cellulose using hydrothermal carbonization. • The nanocarbons were functionalized by different methods to enhance the quantum yield. • The modified CDs were used as sensitive and selective probes for iron ions. • The PEG1500N-modified CD showed a limit of detection of 0.15 μM for Fe 3+ ions.
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
刚刚
刚刚
1秒前
Jasper应助8564523采纳,获得10
1秒前
1秒前
科目三应助齐小明采纳,获得10
1秒前
2秒前
CodeCraft应助健壮的盛开采纳,获得10
2秒前
量子星尘发布了新的文献求助10
2秒前
3秒前
小马甲应助橘子采纳,获得10
3秒前
温柔樱桃发布了新的文献求助10
4秒前
锌小子完成签到,获得积分10
5秒前
5秒前
舒服的醉卉完成签到,获得积分10
5秒前
5秒前
manjusaka发布了新的文献求助10
5秒前
黄经亮完成签到,获得积分10
6秒前
6秒前
222完成签到 ,获得积分10
6秒前
黑豆完成签到,获得积分10
6秒前
7秒前
李健应助5High_0采纳,获得10
7秒前
mmm关闭了mmm文献求助
7秒前
7秒前
共享精神应助暮商零七采纳,获得10
8秒前
JamesPei应助Dabaozi采纳,获得10
8秒前
9秒前
9秒前
烟花应助光亮的思柔采纳,获得10
10秒前
隐形曼青应助年轻的烨华采纳,获得10
10秒前
温水完成签到,获得积分10
10秒前
斋藤飞鸟完成签到,获得积分10
10秒前
10秒前
jue发布了新的文献求助10
10秒前
10秒前
feng发布了新的文献求助10
10秒前
夏沫发布了新的文献求助10
11秒前
苏生鑫发布了新的文献求助10
11秒前
11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
SOFT MATTER SERIES Volume 22 Soft Matter in Foods 1000
Zur lokalen Geoidbestimmung aus terrestrischen Messungen vertikaler Schweregradienten 1000
Storie e culture della televisione 500
Selected research on camelid physiology and nutrition 500
《2023南京市住宿行业发展报告》 500
Food Microbiology - An Introduction (5th Edition) 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 内科学 生物化学 物理 计算机科学 纳米技术 遗传学 基因 复合材料 化学工程 物理化学 病理 催化作用 免疫学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 4884713
求助须知:如何正确求助?哪些是违规求助? 4169858
关于积分的说明 12939294
捐赠科研通 3930463
什么是DOI,文献DOI怎么找? 2156559
邀请新用户注册赠送积分活动 1174925
关于科研通互助平台的介绍 1079670