In situ Raman spectra were collected at different temperatures as the coupons were heated and then cooled. Coupons were also characterized ex situ with Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectrometry, and X-ray diffraction. Coupons heated to either 374 or 505°...
In Situ Raman Spectroscopy of Catalysts: Examples from Current ResearchIn situ Raman spectroscopySelective oxidationMolybdenaCeriaDefectsNOx storage-reductionLean NOx trapsThe potential of Raman spectroscopy for the characterization of catalytic materials is outlined. Raman spectra can be recorded in situ ...
Raman spectra of spinel Li Mn O ( x=1.0 and 1.1) were recorded in situ during electrochemical intercalation of lithium ions. We demonstrate that phases and structural modifications in these compounds can be identified using Raman spectroscopy. In stoichiometric LiMn O , Raman spectral results indica...
Raman spectroscopy has been used to carry out in situ studies of K3PMo12O40 state in acrolein oxidation. It has been established that at 400°C the simultaneous effects of both the reaction mixture and laser beam lead to the formation of surface MoO3 on the catalyst. This is a preview ...
(Supplementary Fig.17), which is also confirmed by the fact that the peak at 750 cm−1in the in situ Raman spectra cannot be fully recovered upon setting back the electrode to OCP, while fully recovered after calcination at 300 °C under Ar atmosphere (Supplementary Fig.18). ...
We have measured in-situ Raman spectra of aluminosilicate glasses and liquids with albite (NaAl-Si3O8) and anorthite (CaAl2Si2O8) compositions at high temperatures, through their glass transition range up to 1700 and 2000 K, respectively. For these experiments, we have used a wire-loop heati...
apH dependence of the catalytic performance of COF-205-Ru with iR-compensation under H2SO4(pH values: 0.36, 0.97 and 1.19, respectively).bCorresponding log(j) at 1.60 and 1.70 V under different pH values.cIn situ Raman spectra of COF-205-Ru electrode at different applied voltages in 0....
Fig2 TimeresolvedinsituRamanspectraofadsorbed oxygenspeciesonelectrolyticsilvertreatedat423 Kfordifferenttime ( 1 ) 10min ,( 2 ) 20min ,( 3 ) 30min 2.3 433!973K 时样品的拉曼光谱分析 图 3 给出了温度由 433K 升高到 973K 的过程 中电解银表面氧物种的拉曼光谱的变化情况,可以 看出,在 433"473...
were performed on the Keithley 4200 semiconductor characterization system in a Cascade Summit 12000 probe station. To acquire the contact angle measurements, a commercial contact angle system (DataPhysics, OCA 20) was used with 3 μL of water droplet as the indicator. In situ Raman spectra ...
The distribution range, time-varying characteristics, and sources of lunar water are still controversial. Here we show the Chang’E-5 in-situ spectral observations of lunar water under Earth’s magnetosphere shielding and relatively high temperatures. Ou