Biomolecule-assisted synthesis and gas-sensing properties of porous nanosheet-based corundum In2O3 microflowers

Design, preparation and evaluation of a high performance sensor for formaldehyde based on a novel hybride nonocomposite ZnWO3/rGO

The ultrasound wave assisted synthesis of a novel ZnWO₃/rGO hybrid nono composition (ZnWO₃/rGO HNC) as a high performance sensor for formaldehyde (FA) has been reported. Different techniques of analysis such as XRD, FE-SEM, TGA, XPS, HRTEM and BET were applied for morphological and spectroscopic characterization of the ZnWO₃/rGO HNC. The sensing evaluation of the constructed sensor showed high selectivity, sensitivity and a linear correlation between achieved responses and concentration of target gas (1-10 ppm) with R² = 0.993 at temperature of 95 °C. The determination of FA was validated and performed using gas chromatography-mass spectrometry combined by solid phase micro-extraction after derivatization with O-(2,3,4,5,6-pentafluoro-benzyl)-hydroxylamine hydrochloride. Validation was carried out in terms of limit of detection linearity, precision, and recovery. The mechanistic evaluation of sensing behavior of the ZnWO₃/rGO HNC was interpreted based on large specific surface area (SSA) to volume, mesoporous structure and the heterojunction between rGO and ZnWO₃ at the interface between the rGO and ZnWO₃.

Hydrothermal synthesis and Cl2 sensing performance of porous-sheets-like In2O3 structures with phase transformation

Phase transformation (bcc-In₂O₃ to rh-In₂O₃) and high Cl₂ sensing performance of Fe doped porous-sheets-like In₂O₃.

Synthesis of Zn-doped In2O3nano sphere architectures as a triethylamine gas sensor and photocatalytic properties

Zn-doped In₂O₃nano spheres (ZIO NSs) were synthesized by calcining the precipitates prepared through a facile one-step hydrothermal synthesis method.

Three-dimensional ultrathin In2O3 nanosheets with morphology-enhanced activity for amine sensing

We prepared a three dimensional In₂O₃ material built by ultrathin nanosheets with an enhanced amine sensing property.