| Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering | |
| Li, Haining1,2; Yang, Bing1; Lu, Jiaqi1,2; Guo, Xiaokun1,2; Yu, Biao1,2; Xiong, Ying3; Huang, Nan1; Liu, Lusheng1; Xu, Ge4; Jiang, Xin1 | |
| Corresponding Author | Yang, Bing(byang@imr.ac.cn) ; Xu, Ge(gxu@sut.edu.cn) ; Jiang, Xin(xjiang@imr.ac.cn) |
| 2022-10-15 | |
| Source Publication | APPLIED SURFACE SCIENCE
 |
| ISSN | 0169-4332 |
| Volume | 599Pages:9 |
| Abstract | Carbon materials exhibit great potential in the application of surface-enhanced Raman scattering (SERS). In this work, the approaches of tailoring the sp2/sp3 carbon using chemical vapor deposition (CVD) and chemical terminations using surface modification were carried out in order to improve the SERS properties of carbon materials. With increasing the methane gas flow in CVD process, amorphous sp2 carbon was added into nanocrystalline diamond films. At high methane concentration, diamond/graphite (D/G) nanosheet films with a porous structure were formed with diamond nanosheet as a core and multilayer graphite as a shell. The adsorbed R6G molecules exhibit an increase in Raman signals with increasing the methane concentration. With oxidizing the D/G samples by modified Hummers method, the Raman signals are further increased with a detection limit of 10-8 mol/L and an enhancement factor of about 7 x 106. The Raman and XPS results indicate that such Raman enhancement is attributed to the C--O groups formed on the conductive graphite, the 7C-7C stacking interaction between the probe molecule and the graphite and the presence of the porous structure. The oxidized D/G films exhibit high mechanical strength and recyclability after repeated detection-cleaning process, which are urgently needed for practical SERS application. |
| Keyword | surface-enhanced Raman scattering Nanocrystalline diamond film Chemical vapor deposition Surface modifications |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.apsusc.2022.153966 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52172056] ; National Natural Science Foundation of China[51872294] |
| WOS Research Area | Chemistry ; Materials Science ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000817796000004 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174768 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, Bing; Xu, Ge; Jiang, Xin |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res IMR, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Peoples R China 4.Shenyang Univ Technol, Sch Environm & Chem Engn, 111 Shenliao West Rd, Shenyang 110870, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Haining,Yang, Bing,Lu, Jiaqi,et al. Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering[J]. APPLIED SURFACE SCIENCE,2022,599:9. |
| APA | Li, Haining.,Yang, Bing.,Lu, Jiaqi.,Guo, Xiaokun.,Yu, Biao.,...&Jiang, Xin.(2022).Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering.APPLIED SURFACE SCIENCE,599,9. |
| MLA | Li, Haining,et al."Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering".APPLIED SURFACE SCIENCE 599(2022):9. |
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