Fine-tuning photoluminescence and photocatalysis: Exploring the effects of carbon quantum dots synthesis and purification on g-C3N4

IF 4.9 2区 化学 Q2 CHEMISTRY, PHYSICAL Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-19 DOI:10.1016/j.colsurfa.2024.135789
Nijad Ishak , Pavel Galář , Roopesh Mekkat , Mathieu Grandcolas , Miroslav Šoóš
{"title":"Fine-tuning photoluminescence and photocatalysis: Exploring the effects of carbon quantum dots synthesis and purification on g-C3N4","authors":"Nijad Ishak ,&nbsp;Pavel Galář ,&nbsp;Roopesh Mekkat ,&nbsp;Mathieu Grandcolas ,&nbsp;Miroslav Šoóš","doi":"10.1016/j.colsurfa.2024.135789","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the constituents of microwave-synthesized carbon quantum dots (CQDs) and their effects on the photocatalytic performance of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) semiconductors. The synthesized g-C<sub>3</sub>N<sub>4</sub> and CQDs were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), UV–visible (UV–vis) spectroscopy, and Raman spectroscopy. The influence of CQD synthesis parameters on photoluminescence (PL) behavior was analyzed through time-integrated photoluminescence spectroscopy and time-resolved photoluminescence spectroscopy (TRPL). CQD purification via column chromatography and heat treatment enhanced the photocatalytic efficiency of CQDs/g-C<sub>3</sub>N<sub>4</sub> composites, achieving up to 90 % methylene blue (MB) degradation. Extended CQDs pyrolysis resulted in fluorophore degradation and the formation of carbogenic cores, contributing to increased photocatalytic activity. Cytotoxicity testing confirmed the nontoxic nature of CQDs components and the composite. The high efficiency, low toxicity, and durability of the CQDs/g-C<sub>3</sub>N<sub>4</sub> photocatalyst present promising applications for renewable energy, environmental remediation, and sustainable chemical processes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135789"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927775724026530","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

This study investigates the constituents of microwave-synthesized carbon quantum dots (CQDs) and their effects on the photocatalytic performance of graphitic carbon nitride (g-C3N4) semiconductors. The synthesized g-C3N4 and CQDs were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), UV–visible (UV–vis) spectroscopy, and Raman spectroscopy. The influence of CQD synthesis parameters on photoluminescence (PL) behavior was analyzed through time-integrated photoluminescence spectroscopy and time-resolved photoluminescence spectroscopy (TRPL). CQD purification via column chromatography and heat treatment enhanced the photocatalytic efficiency of CQDs/g-C3N4 composites, achieving up to 90 % methylene blue (MB) degradation. Extended CQDs pyrolysis resulted in fluorophore degradation and the formation of carbogenic cores, contributing to increased photocatalytic activity. Cytotoxicity testing confirmed the nontoxic nature of CQDs components and the composite. The high efficiency, low toxicity, and durability of the CQDs/g-C3N4 photocatalyst present promising applications for renewable energy, environmental remediation, and sustainable chemical processes.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
微调光致发光和光催化:探索碳量子点的合成和纯化对 g-C3N4 的影响
本研究探讨了微波合成的碳量子点(CQDs)的成分及其对氮化石墨碳(g-C3N4)半导体光催化性能的影响。利用 X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、透射电子显微镜 (TEM)、热重分析 (TGA)、紫外可见光谱 (UV-vis) 和拉曼光谱对合成的 g-C3N4 和 CQDs 进行了表征。通过时间积分光致发光光谱和时间分辨光致发光光谱(TRPL)分析了 CQD 合成参数对光致发光(PL)行为的影响。通过柱层析和热处理纯化 CQD,提高了 CQDs/g-C3N4 复合材料的光催化效率,亚甲基蓝(MB)降解率高达 90%。延长 CQDs 高温分解可导致荧光团降解并形成碳核,从而提高光催化活性。细胞毒性测试证实了 CQDs 成分和复合材料的无毒性。CQDs/g-C3N4 光催化剂具有高效、低毒和耐久性的特点,在可再生能源、环境修复和可持续化学过程中具有广阔的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
8.70
自引率
9.60%
发文量
2421
审稿时长
56 days
期刊介绍: Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.
期刊最新文献
Study on improving the performance of engineered cement-based composites by modifying binder system and polyethylene fiber/matrix interface Toxic gas molecules adsorbed on the original and metal-doped two-dimensional s-C3N4: A first-principles investigation Unveiling molecular alignment, dielectric and electrical conductivity of an unaligned 4-octyl-4′-cyanobiphenyl liquid crystal doped with carbon dots Crown-grafted loose nanofiltration membranes for the recovery of brine resources: Insights from molecular dynamics simulations A first principles study of BiSb monolayer: A novel gas sensor for robotic applications
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1