In situ synthesis of WS2 QDs for sensing of H2O2: Quenching and ...
2023年3月1日 · X-ray diffraction (XRD) patterns were recorded using Bruker D8 advance with 40 kV accelerating voltage and 20 mA current having Cu (K α) radiation source.
(a) XRD pattern and (b) Raman spectra of WS 2 NSs and QDs; high ...
Charge storage performance of WS2 quantum dots (QDs) and nanosheets is compared in a solid state symmetric two electrode system for the first time. Lithium bromide-assisted lithium intercalation...
XRD patterns of WS2a quantum dots, b nanosheets and c bulk …
Crystalline and hetero-dimensional nanostructures of WS2 quantum dots and a few layered sheets have been successfully synthesized in a single-step process using liquid exfoliation in deionized...
XRD pattern of commercial WS2 powder. - ResearchGate
The increase in the Li storage sites is attributed to the high specific capacity due to the well-dispersed 1T-WS2 QDs in the PCNFs; the increased Li-ion transfer rate is attributed to the high ...
超小荧光二硫化钨量子点的水热合成及细胞成像应用_百度文库
【摘 要】以钨酸钠和半胱氨酸为原料,采用水热法一步合成了具有超小粒径(约2 nm)的二硫化钨荧光量子点(ws2 qds).利用透射电子显微镜(tem)、 荧光光谱、x射线光电子能谱(xps)、 红外光谱(ftir)和x射线衍射光谱(xrd)对其进行了表征,并考察了其稳定性和细胞毒性.结果 ...
超小荧光二硫化钨量子点的水热合成及细胞成像应用
以钨酸钠和半胱氨酸为原料, 采用水热法一步合成了具有超小粒径 (约2 nm)的二硫化钨荧光量子点 (WS 2 QDs). 利用透射电子显微镜 (TEM)、 荧光光谱、 X射线光电子能谱 (XPS)、 红外光谱 (FTIR)和X射线衍射光谱 (XRD)对其进行了表征, 并考察了其稳定性和细胞毒性. 结果表明, 制备的WS 2 QDs具有水溶性好、 稳定性高和细胞毒性低的优点....
Hydrothermal synthesis of WS - RSC Publishing
Herein, we report a simple and green approach for the synthesis of photoluminescent WS 2 quantum dots (WS 2 QDs) from WS 2 powder by employing a hydrothermal route in the presence of NaOH. The monodispersed QDs possessed excellent water solubility, good photostability and temporal stability.
In situ synthesis of WS2 QDs for sensing of H2O2: Quenching and ...
2023年3月1日 · In most studies, liquid-exfoliated tungsten disulfide quantum dots (WS2 QDs) were synthesized at pH∼4 (acidic) and generally unstable. Therefore, a figment synthesis technique for creating stable WS 2 QDs is essential.
Excitation-dependent photoluminescence from WS2 …
2017年6月27日 · The structural analysis of nanosheets and quantum dots (QDs) was carried out using X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). The vibrational modes of the sample were investigated using Renishaw inVia Reflex micro-Raman spectrometer with excitation wavelength of 488 nm.
Hydrothermal Synthesis of Ultrasmall Fluorescent Tungsten …
The WS 2 QDs were characterized by means of transmission electron microscopy (TEM), fluorescence spectroscopy, infrared spectroscopy and X-ray diffraction spectroscopy (XRD), and their...