Which is ferrous sulfide

Style: MLA. Get Word of the Day daily email! Test Your Vocabulary. Test your visual vocabulary with our question challenge! Need even more definitions? Just between us: it's complicated. Reproduced with permission from Srivastava al. Copyright , The Royal Society of Chemistry. In summary, we have highlighted the most recent methods of nano-iron sulfide synthesis, including nano iron sulfide modifications and characterizations. Strikingly, nano-sized iron sulfides demonstrate versatile physiochemical properties, enzyme-like catalysis, high stability and biocompatibility, which facilitate their biomedical applications.

A range of nano-iron sulfides have been assessed in catalysis, tumor therapy, antibacterials and antifungals, drug delivery, biosensors, thrombus removal and in plants.

Their advantages include 1 high biocompatibility due to the key role of iron and sulfur in natural life; 2 the photothermal and magnetic properties of nano-sized iron sulfide; 3 their nanostructure and large surface area that can improve drug delivery; and 4 their enzyme-like properties as nanozymes, including their high reactivity to numerous chemical substances that can regulate hydrogen peroxide, ROS and various catalytic reactions to treat related diseases.

Although it has been shown that nano-sized iron sulfides represent great potential in numerous applications in biomedicine Scheme 2 , a number of issues remain to be addressed, including the synthesis of iron sulfide that is stable and in a single phase, with modifications to adapt to the biological environment. Studies have found that the modification of molecular CTAB inhibits the preparation of Fe 3 S 4 NPs due to competitive inhibition with Na 2 S under acidic conditions, resulting in the formation of non-magnetic iron sulfides and other byproducts.

Citrate modified nanoparticles have not sufficient particle spacing due to aggregation effects Simeonidis et al. In addition, the biomedical assessments of iron sulfides remain sparse, and their mechanisms of action under physiological conditions are poorly understood. The intrinsic enzyme-like properties of iron sulfide as nanozymes may provide a window to understand its biological effects and potential cytotoxicity in vivo.

Taken together, nano-sized iron sulfides possess versatile physiochemical properties and enzyme-like properties, which describe a form of distinctive nanomaterials with great potential for use in biomedical applications. Scheme 2. Schematic diagram of biomedical applications based on physiochemical properties of nano-sized iron sulfide.

All authors listed have made a substantial, direct and intellectual contribution to the work, and approved it for publication.

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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