A synergistic approach to enhance sensitivity and selectivity of room temperature operable ammonia gas sensor with humidity assistance using RGO/WOnanocomposite.

In this study, the fabrication of an ultrahigh selective NHgas sensor based on RGO/WOnanocomposite has been proposed. The hydrothermal method was employed to synthesize the RGO/WOnanocomposite. The formation of RGO/WOnanocomposite and the elemental composition, structure and morphology of the as-synthesized materials were confirmed through an array of analytical techniques, including XRD, Raman, FT-IR, XPS and TEM.

Tailored mesoporous γ-WO nanoplates: unraveling their potential for highly sensitive NH detection and efficient photocatalysis.

Herein, the monoclinic phase of tungsten oxide (γ-WO) was successfully obtained after annealing hydrothermally synthesised WO powder at 500 °C. As per the result obtained from the N adsorption-desorption isotherm, the material has been identified as mesoporous with a specific surface area of 3.71 m g from BET (Brunauer-Emmett-Teller) analysis.

An investigation into the hybrid architecture of Mn-Co nanoferrites incorporated into a polyaniline matrix for photoresponse studies.

In this study, an enhanced photoresponse was observed in the Mn-Co Nanoferrites (MCFs)-Polyaniline (PANI) nanohybrid architecture due to the formation of interface between PANI and MCFs, which provided a conduction pathway for the movement of charge carriers, and these interfaces were observed in a high-resolution transmission electron micrograph (HR-TEM). X-ray photoelectron spectroscopy (XPS) suggests that the carbon (C 1s) of the MCF-PANI nanohybrid shows peaks at 287.80 eV for CO, 286.

Facile synthesis of water-soluble FeO and FeO@PVA nanoparticles for dual-contrast T1- and T2-weighted magnetic resonance imaging.

Superparamagnetic iron oxide nanoparticles (SPIONs) are widely used as a robust negative contrast agent on conventional MRI. The development of new types of high-performance nanoparticulate MR contrast agents with either positive (T1) or dual-contrast (both positive and negative, T1 + T2) ability is of great importance. Here we report a facile synthesis of FeO and FeO@PVA nanoparticles for dual-contrast T1- and T2-weighted MRI.

Earth-abundant and environmentally benign Ni-Zn iron oxide intercalated in a polyaniline based nanohybrid as an ultrafast photodetector.

Nickel-zinc iron oxide (NZF) was introduced into a polyaniline (PANI) matrix by an chemical oxidation polymerization approach. The surface composition and chemical states were investigated by X-ray photoelectron spectroscopy (XPS), which revealed an Fe 2p spectrum with the two peak positions of Fe 2p and Fe 2p at 711.00 and 724.

Study of pressure induced phase transformation in CTAB capped CdS nanoparticles.

Effect of high pressure on as prepared 20mM CTAB capped CdS nanoparticles (size ~4nm) has been analyzed in this paper. Raman scattering has been used to observe the phase transition pressure. X-ray diffraction pattern is used for structural characterization.