Crystal structure and texture of H2S-precipitated cadmium sulfide

Westerflier, S. W. F. M. Van Hövell Tot; Kolář, Z.; Stein, H.N.; Goeij, J.J.M. de

doi:10.1016/0021-9797(89)90095-7

Cited by 4 publications

(10 citation statements)

References 19 publications

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“…The XRD pattern of CdS showed the sharp diffraction peaks in the range of 20 o <2θ<120 o can be indexed as cubic (zinc blend) CdS ( 200) and ( 220) and hexagonal CdS (102), ( 110), (103), and (202), which all are in good accordance with ICDD (International Centre for Diffraction Data) pdf card numbers: 10-454 and 41-1049, respectively. The results were insistent with the finding by Van Hövell et al, 33 in which chloride promoted the mixed crystallites between hexagonal hollow CdS and cubic CdS. The authors also proposed a precipitation model for the formation of hollow sphere structure of CdS as the following: (i) CdS molecules are homogeneously precipitated, (ii) the nuclei then grow to single-phase (hexagonal or cubic) crystallites, and finally (iii) the crystallites are aggregated or cemented by continuing crystal growth or recrystallization into polycrystalline (mostly mixed-phase particles).…”

Section: (C))supporting

confidence: 80%

“…Authors found chloride present at the grain boundaries inside the particles, and during the formation of CdS crystallites, the chloride promoted the formation of particles as well as interfered in the aggregation of the crystallites into the single particle. 33 In our experiment, the chloride was at a low concentration (∼2 mM) but still influenced the formation of hollow nanoparticles of 17 nm and the open and void aggregates of spheres. The fact that chloride was not detected in the particles (or aggregates) was due to the washing step with de-ionized water three times before analyzing by EDS.…”

Section: (C))mentioning

confidence: 55%

“…Previously, investigations in the CdS precipitation by Cd(II) and Na 2 S/H 2 S confirmed the formation of hollow (void) CdS nanoparticles. 32,33 The hollow sphere of CdS-NPs has been synthesized with the assistance of poly-glycol 32 or chloride anion. 33 With the presence of poly-glycol, CdS hollow spheres of approximately 25 nm average diameter and 5 nm shell thickness were formed by the precipitation method with CdSO 4 and Na 2 S in benign conditions.…”

Section: Resultsmentioning

confidence: 99%

“…32,33 The hollow sphere of CdS-NPs has been synthesized with the assistance of poly-glycol 32 or chloride anion. 33 With the presence of poly-glycol, CdS hollow spheres of approximately 25 nm average diameter and 5 nm shell thickness were formed by the precipitation method with CdSO 4 and Na 2 S in benign conditions. The authors found that the poly-glycol had a significant influence on the formation of the CdS hollow spheres because without poly-glycol only solid particles were formed.…”

Section: Resultsmentioning

confidence: 99%

“…The authors also proposed a precipitation model for the formation of hollow sphere structure of CdS as the following: (i) CdS molecules are homogeneously precipitated, (ii) the nuclei then grow to single-phase (hexagonal or cubic) crystallites, and finally (iii) the crystallites are aggregated or cemented by continuing crystal growth or recrystallization into polycrystalline (mostly mixed-phase particles). 33

Figure 3.XRD pattern of CdS hollow particles synthesized after 21 days incubation.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis of hollow and spherical cadmium sulphide nanoparticles by an unconventional design of bioelectrochemical system

Lam

Nguyen³

et al. 2021

Nanomaterials and Nanotechnology

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The synthesis of CdS nanoparticles was developed based on the unconventional design of bioelectrochemical system (BES) inoculated with Shewanella sp. HN-41. The BES configuration included two bottle chambers separated by silicon membrane but directly connected by a graphite electrode perforating through silicon membrane, namely, non-external circuit bioelectrochemical system (nec_BES). Shewanella sp. HN-41 in the anode of nec_BES consumed lactate and transferred electrons to the graphite electrode end in the anode and, in its turn, the graphite electrode end in the cathode reduced directly thiosulfate to sulphide, forming CdS nanoparticles after 21 days. CdS nanoparticles with the average size of approximately 17 nm were synthesized in the cathode solution. The hollow, spherical, and void structure of particles was observed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images. The energy dispersive X-ray spectroscopy (EDS) study confirmed the nanoparticles contained Cd and S elements, and X-ray diffraction (XRD) data showed a strong crystalline phase and mixed crystallites of CdS nanoparticles. The UV-Vis absorption spectra of CdS nanoparticles revealed the blue shift in excitonic transition with respect to CdS bulk material, suggesting its potential application in optical studies. The bioelectrochemical system can be applied for the removal and preparation of other sulphide heavy metals.

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Section: (C))supporting

confidence: 80%

Section: (C))mentioning

confidence: 55%