scispace - formally typeset
Search or ask a question
Topic

Sodium sulfide

About: Sodium sulfide is a research topic. Over the lifetime, 2851 publications have been published within this topic receiving 27733 citations. The topic is also known as: disodium sulfide.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a nano-CdS crystal has been succesfully synthesized by composite molten salt (CMS) method for the first time, using composites as a reaction solvent, sodium sulfide and cadmium nitrate hexahydrate as reactants at temperature of 200°C for 24h in the absence of organic dispersant or capping agents.
Abstract: Nano-CdS crystal has been succesfully synthesized by composite molten salt (CMS) method for the first time, using composite molten salt as a reaction solvent, sodium sulfide and cadmium nitrate hexahydrate as reactants at temperature of 200 °C for 24 h in the absence of organic dispersant or capping agents. X-ray diffraction and field emission scanning electron microscopy (FESEM) images indicated that the as-synthesized product were well crystallized and belonged to nano-scale. Their UV–vis absorption spectrum demonstrated a band gap of 2.49 eV corresponding to the absorption edge of 499 nm. The experimental result of photocatalytic degradation on methyl orange by the nano-CdS showed much better photocatalysis than that by the commercial CdS powder under the irradiation of ultraviolet light source.

20 citations

Journal ArticleDOI
15 Jan 2015-Fuel
TL;DR: In this article, the distribution of captured Hg2+(L) in the simulated WFGD slurry was studied as a function of various environmental factors, including pH, temperature, and salt concentration.

20 citations

Journal ArticleDOI
TL;DR: A series of heteroatom-substituted macrocycles containing an anthraquinone moiety as a fluorescent signaling unit and a cyclic polyheteroether chain as the receptor are reported here, with markedly improved selectivity for Pb(II) as compared to the oxygen analogue 1.
Abstract: We report here a series of heteroatom-substituted macrocycles containing an anthraquinone moiety as a fluorescent signaling unit and a cyclic polyheteroether chain as the receptor. Sulfur, selenium, and tellurium derivatives of 1,8-anthraquinone-18-crown-5 (1) were synthesized by reacting sodium sulfide (Na2S), sodium selenide (Na2Se) and sodium telluride (Na2Te) with 1,8-bis(2-bromoethylethyleneoxy)anthracene-9,10-dione in a 1 : 1 ratio. The optical properties of the new compounds are examined and the sulfur and selenium analogues produce an intense green emission enhancement upon association with Pb(II) in acetonitrile. Selectivity for Pb(II) is markedly improved as compared to the oxygen analogue 1 which was also competitive for Ca(II) ion. UV-Visible and luminescence titrations reveal that 2 and 3 form 1 : 1 complexes with Pb(II), confirmed by single-crystal X-ray studies where Pb(II) is complexed within the macrocycle through coordinate covalent bonds to neighboring carbonyl, ether and heteroether donor atoms. Cyclic voltammetry of 2–8 showed classical, irreversible oxidation potentials for sulfur, selenium and tellurium heteroethers in addition to two one-electron reductions for the anthraquinone carbonyl groups. DFT calculations were also conducted on 1, 2, 3, 6, 6 + Pb(II) and 6 + Mg(II) to determine the trend in energies of the HOMO and the LUMO levels along the series.

20 citations

Journal ArticleDOI
Muhammad Ashram1
TL;DR: The first synthesis of the C 3 -symmetrical p-tert-butyl hexahomotrithiacalix[3]arenes 7d-f via one-pot procedure by the reaction of 2,6-bis(chloromethyl)-ptertbutylphenol 8d with sodium sulfide nanohydrate under high-dilution conditions is reported in this paper.
Abstract: The first synthesis of the C 3 -symmetrical p-tert-butylhexahomotrithiacalix[3]arene 7d via one-pot procedure by the reaction of 2,6-bis(chloromethyl)-p-tert-butylphenol 8d with sodium sulfide nanohydrate under high-dilution conditions is reported. Also, hexahomotrithiacalix[3]arenes 7d-f (where d-f designate the type of the substituents R at the p-positions of the phenolic rings: d, R=t-Bu; e, R=CH3; f, R=Cl) were synthesized via a convergent approach in good yield by the [2+1] cyclization reaction of 2,6-bis(chloromethyl)phenol monomers 8d-f and bis(chloromethyl)phenol dimers 15d-f in presence of sodium sulfide nanohydrate under high-dilution conditions. The structures of 7d-f were determined by 1H, 13C NMR, MS and elemental analysis. A preliminary study of the binding properties of 7d with alkali- and heavy metal cations using biphasic picrate extraction method showed only weak abilities to bind the cations examined.

20 citations

Journal ArticleDOI
TL;DR: In this paper, the copper in the amino acid complex was reduced to insoluble cuprous sulfide and the free amino acid was released in pure form, requiring only 5-10min and 0.55-0.75-equiv of sodium sulfide.

19 citations


Network Information
Related Topics (5)
Carbon
129.8K papers, 2.7M citations
82% related
Aqueous solution
189.5K papers, 3.4M citations
80% related
Catalysis
400.9K papers, 8.7M citations
79% related
Photocatalysis
67K papers, 2.1M citations
79% related
Adsorption
226.4K papers, 5.9M citations
78% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202325
202233
202136
2020107
2019143
2018172