Synthesis and characterization of inorganic‐organic ZnS(aminopropane)_n composite materials

Abstract

The main goal of our work was the synthesis and characterization of ZnS(aminopropane) n hybrid inorganicorganic layered materials. The basic material of our investigation was ZnS(1,3-dap) 1/2 , (where dap denotes diaminopropane). Its crystal structure has been solved by X-ray powder diffraction methods. This layered compound was prepared using 1,3-diaminepropane, zinc sulphate (ZnSO 4 ) and tioacetamide (CH 3 CSNH 2 ). We have also tried to obtain and characterize other materials: ZnS(1-ap) and ZnS(1,2-dap), where ap denotes aminopropane. But in these last two cases diffraction patterns were of much poorer quality, which prevented a full structural survey; thus we cannot directly prove that hybrid lamellar materials were obtained. All compounds were studied using X-ray diffraction, chemical analysis, UV-vis spectroscopy and scanning electron microscopy. Additionally, using X-ray diffraction as a function of temperature, we obtained information about structural changes of obtained composite materials under temperature treatment.

Preparation of ZnS@N-doped-carbon composites via a ZnS-amine precursor vacuum pyrolysis route

“…Fig. 4 (a) XRD patterns of Rep-ZnS(ha), 42 Exp-ZnS(ha), ZnS@NC-1; (b) XRD patterns of Rep-ZnS(en) 0.5 , 43 Exp-ZnS(en) 0.5 , ZnS@NC-2; (c) XRD patterns of Rep-ZnS(pda) 0.5 , 44 Exp-ZnS(pda) 0.5 , ZnS@NC-1. TEM images of ZnS@NC-1 (d, e) and ZnS@NC-3 (f, g) via the vacuum pyrolysis route.…”

“…The target product ZnS(pda) 0.5 was obtained after drying in vacuum at 60 °C, named as Exp-ZnS(pda) 0.5 . Yield, 3.214 g. The reported ZnS(pda) 0.5 44 is named Rep-ZnS(pda) 0.5 .…”

Formation of ZnSe and ZnS nanostructures from hybrid organic‐inorganic precursors of the type ZnSe(m‐xylylenediamine)1/2 and ZnS(1,3‐diaminopropane)1/2

“…Precursors were obtained according to procedures described in our earlier reports . The choice of such materials as precursors was related to their highly ordered structure, in which monolayers of semiconductor (separated by amines) are present.…”

One‐step synthesis of ZnS/ZnO using HMDA as precursor and active part for high photocatalytic hydrogen production

“…4 Despite being promising semiconductors in the field of photocatalysis, sulfide and ZnO have band gap energies outside of the range for the maximum use of solar energy (1.23-3 eV), and this limits their effectiveness as photocatalysts. One of the most prominent strategies to improve the photo-response of the semiconductors is using organic molecules (such as aminopropane, 5 hexanediamide, 6 diethylenetriamine, 7 propylamine, 8 and ethylenediamine) 9,10 to obtain hybrid materials. In the case of sulfides (commonly ZnS or CdS), the organic compound acts as a molecular bridge interspersed between two layers of the metallic sulfide, forming stacked multilayer structures with a morphology of hexagonal or rectangular sheets.…”