Nitrogen-doped carbon dot-based fiber optic sensor for alkaline pH monitoring
文献类型：期刊论文
| 作者 | Fan, Liang3; Xu, Weiqiao2,3; Liao, Xiufen2; Huang, Songqiang1; Pan, Zihan2; Zhao, Xia3 |
| 刊名 | OPTICAL MATERIALS
 |
| 出版日期 | 2026-03-01 |
| 卷号 | 171页码:16 |
| 关键词 | Nitrogen-doped carbon quantum dots Mesoporous silica Fiber optic pH sensor Alkaline cement slurry solution |
| ISSN号 | 0925-3467 |
| DOI | 10.1016/j.optmat.2025.117787 |
| 通讯作者 | Fan, Liang(fanl@qdio.ac.cn) ; Zhao, Xia(zx@qdio.ac.cn) |
| 英文摘要 | Real-time pH monitoring in concrete pore solutions is vital for assessing durability and corrosion risks, but traditional methods and fluorescent sensors lack sensitivity, stability, and anti-interference capability in this complex environment. To address this, nitrogen-doped carbon quantum dots (N-CQDs-OH) were synthesized via a one-step hydrothermal method using resorcinol and mixed nitrogen sources (nitric acid, ammonia, formamide). N-CQDs-OH were combined with mesoporous silica to form fluorescent nanoparticles, preventing dye oxidation, and immobilized on a cellulose acetate membrane to create a fiber optic pH sensor. The sensor exhibits high sensitivity (R2 = 0.99668) and a rapid 15-s response within pH 9-13, alongside excellent resistance to ionic and temperature interference. Critically, it maintains stable performance in highly alkaline cement slurry solution (pH 13). This work provides an innovative strategy for N-CQD functional design and high-performance pH sensing, demonstrating significant potential for engineering and industrial monitoring. |
| WOS关键词 | CORROSION ; MECHANISM ; PROBE |
| 资助项目 | Shandong Excellent Youth Science Foundation Program[2023HWYQ-100] ; Guangxi Science and Technology Program[Guike AA23026007] ; Taishan Scholars Program ; Shandong Natural Science Foundation Youth Program[ZR2023QE015] |
| WOS研究方向 | Materials Science ; Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:001640781600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204427]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Fan, Liang; Zhao, Xia |
| 作者单位 | 1.China Southern Power Grid Co Ltd, Liuzhou Bur Extrahigh Voltage Power Transmiss Co, Dali, Peoples R China 2.Guangxi Acad Sci, Guangxi Acad Marine Sci, Guangxi Key Lab Marine Environm Sci, Nanning, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Liang,Xu, Weiqiao,Liao, Xiufen,et al. Nitrogen-doped carbon dot-based fiber optic sensor for alkaline pH monitoring[J]. OPTICAL MATERIALS,2026,171:16. |
| APA | Fan, Liang,Xu, Weiqiao,Liao, Xiufen,Huang, Songqiang,Pan, Zihan,&Zhao, Xia.(2026).Nitrogen-doped carbon dot-based fiber optic sensor for alkaline pH monitoring.OPTICAL MATERIALS,171,16. |
| MLA | Fan, Liang,et al."Nitrogen-doped carbon dot-based fiber optic sensor for alkaline pH monitoring".OPTICAL MATERIALS 171(2026):16. |
入库方式： OAI收割
来源：海洋研究所
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