A room-temperature gas sensor based on 2D Ni-Co-Zn ternary oxide nanoflakes for selective and sensitive ammonia detection.

While most of the reports on NH gas sensors are either based on metal oxide composites with other 2D materials, polymers or noble metals or involve multi-step-based synthesis routes, this work is the first report on a pristine ternary metal oxide, 2D NiCoZnO nanoflake based room-temperature (RT) NH gas sensor. The 2D NiCoZnO nanoflakes were prepared by a one-step hydrothermal method. FESEM and TEM images displayed micro-flower like morphologies, containing vertically aligned interwoven porous 2D nanoflakes, whereas XPS and XRD data confirmed the successful growth of this ternary metal-oxide.

Recent advancements in fabrication of nanomaterial based biosensors for diagnosis of ovarian cancer: a comprehensive review.

Ovarian cancer is commonly diagnosed via determination of biomarkers like CA125, Mucin 1, HE4, and prostasin that can be present in the blood. However, there is a substantial need for less expensive, simpler, and portable diagnostic tools, both for timely diagnosis and management of ovarian cancer. This review (with 101 refs.

A ruthenium(IV) disulfide based non-enzymatic sensor for selective and sensitive amperometric determination of dopamine.

An electrochemical dopamine (DA) sensor has been fabricated by modifying a glassy carbon electrode (GCE) with ruthenium disulfide (RuS) nanoparticles (NPs). FESEM and TEM micrographs show the NPs to have an average size of ~45 nm. XRD, Raman and EDS, in turn, confirm the successful formation of cubic phased RuS NPs.

Few layered MoS grown on pencil graphite: a unique single-step approach to fabricate economical, binder-free electrode for supercapacitor applications.

While all reports on supercapacitors are based on electrodes that are fabricated either using expensive, complex fabrication techniques or multiple steps based synthesis routes, the current work is the first report of one-step hydrothermally grown MoS on pencil graphite electrode (PGE) for ultra-high performance supercapacitor application. Field emission scanning electron microscope images revealed MoS micro-flower like structure containing interwoven nanosheets whereas chemical characterizations data confirmed the successful growth of few layered (>4 layers) MoS on PGE. The performance of the electrode was optimized using various grades of pencil, and it was found that the areal capacitance of the MoS grown on 1H PGE(7178.

Bimetallic Pt-Pd nanostructures supported on MoS as an ultra-high performance electrocatalyst for methanol oxidation and nonenzymatic determination of hydrogen peroxide.

The authors report on a composite based electrocatalyst for methanol oxidation and HO sensing. The composite consists of Pt nanoparticles (NPs), Pd nanoflakes, and MoS. It was synthesized by chemical reduction followed by template-free electro-deposition of Pt NPs.