Vegetal matter is composed mainly of carbon, hydrogen, oxygen, nitrogen, sulfur, and some inorganic mineral elements.
The residue is chiefly carbon, with minor amounts of hydrogen, nitrogen, sulfur, and oxygen.
These relatively simple molecules contain the elements carbon, hydrogen, and oxygen; some also contain nitrogen, sulfur, or cobalt.
Proteins, fats, nucleic acids, and other compounds also are synthesized during the process, as long as elements such as nitrogen, sulfur, and phosphorus are available.
Applied heat breaks the various chemical bonds of the kerogen macromolecules, liberating small molecules of liquid and gaseous hydrocarbons as well as nitrogen, sulfur, and oxygen compounds.
Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen.
Here, we report a facile one-pot method to prepare porous three-dimensional nitrogen, sulfur-codoped graphene through hydrothermal reduction of graphene oxide with multi-ion mixture modulation.
Subsequently, the thin films were annealed in three different atmospheres: vacuum, nitrogen-sulfur and vacuum-sulfur.
The most effective atmosphere was nitrogen-sulfur, showing enhancement in the optical, structural, and morphological properties.
It was found that heat treatment is indispensable in nitrogen-sulfur and vacuum-sulfur atmospheres in order to increase the polycrystallinity and stoichiometry of ZnS thin films.
Phenothiazine, a conjugated nitrogen-sulfur heterocyclic compound with broad pharmaceutical profile, is a strong electron donating system and applied in the synthesis of various classic antipsychotic drugs.
