Although reduced inorganic sulfur compound (RISC) oxidation in many chemolithoautotrophic sulfur oxidizers has been investigated in recent years, there is little information about RISC oxidation in heterotrophic acidophiles. In this study, Acidicaldus sp. strain DX-1, a heterotrophic sulfur-oxidizing acidophile, was isolated. Its genome was sequenced and then used for comparative genomics. Furt...

Marine algae are key sources of the biogenic sulfur compound dimethylsulphoniopropionate (DMSP), a vital component of the marine sulfur cycle. Autotrophic ecosystem engineers such as red coralline algae support highly diverse and biogeochemically active ecosystems and are known to be high DMSP producers, but their importance in the global marine sulfur cycle has not yet been appreciated. Using ...

The most striking result of a study of the process of chemosynthesis (synthesis of all materials from CO2 using chemical energy obtained by oxidation) in the autotrophic bacterium, Thiobacillus thiooxidans, was the ability of the cell to store up the energy derived from sulfur oxidation in an available form which could be used for COs fixation under conditions in which sulfur oxidation was impo...

An inclusion compound of Ca12Al14O33 has been reported as a solid oxide having high sulfide capacity. Towards better understanding the substitution reaction S2− for clathrated O2− in Ca12Al14O33, this study, compounds were equilibrated under fixed O2/S2 partial pressure ratios at 1573 K. It was founded that capacity higher than homogeneous CaO–Al2O3 liquid and decreased with an increase sulfur ...

The air- and moisture-stable iron-sulfur carbonyl clusters Fe3S2(CO)7(dppm) (1) and Fe3S2(CO)7(dppf) (2) carrying the bisphosphine ligands bis(diphenylphosphanyl)methane (dppm) and 1,1'-bis(diphenylphosphanyl)ferrocene (dppf) were prepared and fully characterized. Two alternative synthetic routes based on different thionation reactions of triiron dodecacarbonyl were tested. The molecular struct...

Confining lithium polysulfide intermediates is one of the most effective ways to alleviate the capacity fade of sulfur-cathode materials in lithium-sulfur (Li-S) batteries. To develop long-cycle Li-S batteries, there is an urgent need for material structures with effective polysulfide binding capability and well-defined surface sites; thereby improving cycling stability and allowing study of mo...

The course of the reaction of the cystine in wool with alkali has been reinvestigated. The earlier findings that one sulfur atom is split from each molecule of cystine are confirmed. Of the residual noncystine sulfur in the alka li-tregted wool, mbre than 25 percent has been accounted for as lanthionine. No signifi cant amounts of sulfhydryl groups are in the t reated wools. The results lead to...

The synthesis of ZnO porous nanobelts with high surface-to-volume ratio is envisaged to enhance the zinc oxide sensing and photocatalytic properties. Yet, controlled stoichiometry, doping and compensation of as-grown n-type behavior remain open problems for this compound. Here, we demonstrate the effect of residual sulfur atoms on the optical properties of ZnO highly porous, albeit purely wurtz...