Raman Spectroscopy of Nickel Sulfide Ni₃S₂

Abstract

Raman spectra of nickel sulfides reported in previous studies are inconsistent due possibly to the difficulty in obtaining samples of the required purity in composition and phase. In this study, Raman spectra for both the low-temperature (heazlewoodite)-and the high-temperature (cubic)-phase Ni 3 S 2 , collected under both ex situ and in situ conditions, are correlated with factor group analysis and X-ray diffraction. The study is important to the investigation of sulfur-nickel interactions in catalyst systems for processing of sulfur-containing chemicals and in solid oxide fuel cells (SOFCs) that run on sulfur-containing fuels; it also provides a standard reference for research in areas such as the corrosion of nickel-based alloys in a sulfur-containing atmosphere.

A Novel Aluminum‐Ion Battery: Al/AlCl3‐[EMIm]Cl/Ni3S2@Graphene

“…[33] After fully charged or discharged, most peaks disappears due to the destruction of the lattice in the intercalation/deintercalation process of Al 3+ cations, which is consistent with the XRD results illustrated in Figure S5b,c (Supporting Information). Raman spectra of graphene, as shown in Figure 10b, which exhibits two broad bands at 1360 cm −1 (D-band) and 1598 cm −1 (G-band), the G-band and D-band reveal the presence of inplane vibration of sp 2 bonded carbon atoms and vibrational modes from sp 3 bonded carbon atoms.…”

Carbon coated nickel sulfide/reduced graphene oxide nanocomposites: facile synthesis and excellent supercapacitor performance

“…It was found that the contents of Ni 3 with graphite oxide is reasonable because after the chemical reduction of graphene oxide, the conjugated graphene network (sp 2 carbon) will be re-established, however, the size of the re-established graphene network is usually smaller than that of the original graphite oxide, which will consequently lead to the increase of I D /I G ratio [35,45]. In addition, the strong peaks at 290, 340 and 489 cm -1 in the samples of CCNS and CCNS-RGO-1.5 are consistent with the characteristic peaks of Ni 3 S 2 [46,47]. The FT-IR spectra of graphite oxide and CCNS-RGO-1.5 composite are shown in Fig.…”

Hydrotreating activity of bulk NiB alloy in model reaction of hydrodenitrogenation of carbazole

“…This pattern features presence of new, relatively large peaks, mainly for 2Â = 21.75 • and 31.10 • , as well as a few smaller ones (marked on Fig. 2) which are characteristic of Ni 3 S 2 crystallographic phase (JCPDS #00-030-0863) corresponding to low-temperature structure of Ni 3 S 2 sulfide of heazlewoodlite-phase type [13]. The remaining peaks present in the pattern are related to the presence of both metallic Ni (JCPDS #01-071-3740) and Ni 3 B phase (JCPDS #01-073-1792).…”