Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering

doi:10.1016/j.apsusc.2022.153966

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	Tailoring the sp2/sp3 carbon composition for surface enhancement in Raman scattering
	Li, Haining 3,4; Yang, Bing 4; Lu, Jiaqi 3,4; Guo, Xiaokun 3,4; Yu, Biao 3,4; Xiong, Ying 2; Huang, Nan 4; Liu, Lusheng 4; Xu, Ge 1; Jiang, Xin 4
刊名	APPLIED SURFACE SCIENCE
	2022-10-15
卷号	599 页码:9
关键词	surface-enhanced Raman scattering Nanocrystalline diamond film Chemical vapor deposition Surface modifications
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2022.153966
通讯作者	Yang, Bing(byang@imr.ac.cn) ; Xu, Ge(gxu@sut.edu.cn) ; Jiang, Xin(xjiang@imr.ac.cn)
英文摘要	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.
资助项目	National Natural Science Foundation of China[52172056] ; National Natural Science Foundation of China[51872294]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000817796000004
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174766]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, Bing; Xu, Ge; Jiang, Xin
作者单位	1.Shenyang Univ Technol, Sch Environm & Chem Engn, 111 Shenliao West Rd, Shenyang 110870, Peoples R China 2.Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Peoples R China 3.Univ Sci & Technol China, Dept Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Inst Met Res IMR, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 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.