Raman analysis and mapping for the determination of COOH …
2010年10月1日 · Raman spectroscopy and mapping, coupled to molecular labelling, is used to analyse and monitor the first stage of carbon nanotube functionalization, i.e. their oxidation, which is usually performed to increase the number of surface carboxylic groups, allowing both a better dispersion in solution and the further attachment of biomolecules.
Bicarbonate Rebalances the *COOH/*OCO– Dual Pathways in CO2 ...
2022年8月2日 · By employing an alternative acid electrolyte to restrict the exchange between CO 2 and HCO 3– and eliminating the effect of solution pH, we reveal that HCO 3– can decrease the onset potential of *OCO – and promote further formate production. Theoretical calculations indicate HCO 3– can stabilize the adsorption of *OCO – instead of *COOH.
AFM | 湖南大学刘继磊课题组—原位电化学拉曼揭秘Co(OH)2 …
XRD、Raman、FTIR和XPS（图2）分析进一步表明异质结中Co3O4和Co(OH)2两相共存，且具有三明治结构（即外层为Co(OH)2，中间层为Co3O4）。 Co3O4/Co(OH)2异质结对应的拉曼光谱在589 cm-1处出现了一个新的特征峰，可能是由于Co3O4和Co(OH)2之间的相互作用引起的。
Power of Infrared and Raman Spectroscopies to Characterize …
2020年12月14日 · The ν s (COO –) modes for MIL-88B(Fe) were Raman detected at 1455 cm –1. The presence of two metals in MIL-88B(Ni,Fe) materials causes a split of the ν s (COO –) Raman band into two components and a red shift by 10–15 cm –1.
Mechanistic insights into CO2 conversion chemistry of copper bis ...
2022年10月13日 · We directly observe an intriguing baton-relay-like mechanism of active sites transfer by employing a widely accessible operando Raman/Fourier-transform infrared spectroscopy analysis coupled with...
In Situ Surface-Enhanced Raman Spectroscopic Evidence on the …
2020年8月10日 · Here, in situ surface-enhanced Raman spectroscopy (SERS) empowered by 13 C/ 12 C isotope exchange is applied to probing the CO 2 ER process on nanoporous silver (np-Ag). Direct spectroscopic evidence of the preliminary intermediates, *COOH and *OCO – , indicates that CO 2 is coordinated to the catalyst via diverse adsorption modes.
Raman spectra of MWCNT-COOH | Download Scientific Diagram …
Figure 1 shows the main graphite bands are present in the Raman spectrum of fMWCNTs-COOH bundles. The band located at 1303.60 cm -1 (D band) which is related to disorder in carbon systems and...
In situ topographical chemical and electrical imaging of carboxyl ...
2018年7月23日 · Here we demonstrate mapping of functional groups on a carboxyl-modified graphene oxide (GO–COOH) surface with a spatial resolution of ≈10 nm using tip-enhanced Raman spectroscopy (TERS)....
simultaneous trapping and micro-Raman spectroscopy of SWCNT materials with OET, providing a versatile means forlocallyconcentratingdilutesamples,therefore,enhancing
Unraveling the improved CO2 adsorption and COOH
2023年1月15日 · Cu-decorated ZnO nanosheet as paradigm for validating reaction mechanism. Cu decoration promotes CO 2 physisorption and chemisorption on ZnO nanosheet. Cu clusters lower energy barrier of *CO 2 →*COOH and facilitate COOH* formation. Coupling effect between Cu and ZnO enhances selective CO 2 -to-CO reduction.