石墨烯量子点粉末JCGD-1-4，石墨烯量子点水溶液JCGD-1-4-W
作者：石墨烯量子点粉末JCGD-1-4，石墨烯量子点水溶液JCGD-1-4-W 发布时间：2022-09-05 17:15:32
次浏览
石墨烯量子点粉末JCGD-1-4
Fig. 1Microstructure of the as-prepared GQDs: (a) TEM image. Inset of (a): HR-TEM image. (b) Diameter distribution. (c) AFM image. (d) Height distribution.(e) Height profile along the line A–B.
Table 1 Inductively coupled plasma (ICP) analysis data of GQDs.
Samples(ppm)
Fe
Ni
Mn
Cu
Na
Ca
GQDs
2.6
0.8
0.8
3.6
130.7
270.5
Table 2 QY of GQDs using quinine sulfate as a reference.
Sample
Integrated emission intensity (I)
Abs. (A)
Refractive index of solvent (n)
Quantum yield ( )
Quinine sulfate
65134.5
0.0523
1.33
0.54 (known)
GQDs
4321.6
0.0371
1.33
0.051
Fig. 2 (a) Raman spectrum of the GQDs. (b) XPS spectrum of the GQDs.
Fig. 3(a)UV-vis absorption spectrum of the GQDs at different excitation wavelengths. Inset: Optical photograph of the GQDs dispersed in water under different wavelengths irradiation. (b) PL spectra of the GQDs at excitation wavelengths from 260 to 580 nm.
JCGD-1-4粉末价格：2500元/100毫克、4250元/200毫克、9000元/500毫克
JCGD-1-4-W水分散液价格：100元/20毫升，浓度0.25毫克/毫升
