Preparation and NH3 Gas-Sensing Properties of Double-Shelled Hollow ZnTiO3 Microrods

Abstract

A novel double-shelled hollow (DSH) structure of ZnTiO3 microrods was prepared by self-templating route with the assistance of poly(diallyldimethylammonium chloride) (PDDA) in an ethylene glycol (EG) solution, which was followed by calcining. Moreover, the NH3 gas-sensing properties of the DSH ZnTiO3 microrods were studied at room temperature. The morphology and composition of DSH ZnTiO3 microrods films were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The formation process of double-shelled hollow microrods was discussed in detail. The comparative gas-sensing results revealed that the DSH ZnTiO3 microrods had a higher response to NH3 gas at room temperature than those of the TiO2 solid microrods and DSH ZnTiO3 microrods did in the dark. More importantly, the DSH ZnTiO3 microrods exhibited a strong response to low concentrations of NH3 gas at room temperature.

Preparation and Characterization of ZnTiO3/g‐C3N4 Heterojunction Composite Catalyst with Highly Enhanced Photocatalytic CO2 Reduction Performance

“…[28][29][30] ZnTiO 3 has received much attention because of its promising applications in NH 3 detection, photocatalysis, and lithium storage materials. [31][32][33] However, the short wavelength absorption and high charge recombination rate of pure ZnTiO 3 photocatalysts are still problems of low photocatalytic performance. To address these drawbacks, attempts have been made to modify ZnTiO 3 with atomic doping, [34] but the modified ZnTiO 3 still cannot effectively utilize sunlight.…”

Tuning the Phase Structure of ZnTiO3 Support to Promote the Catalytic Activity of Pd/ZnTiO3 Catalyst for the CO Oxidative Coupling to Dimethyl Oxalate

“…As one of the titanium‐based perovskite oxides, ZnTiO 3 has attracted widespread attention in different frontier research fields due to its extraordinary potentials in electrode materials, [8] magnetic materials, [9] antibacterial materials, [10] gas sensors, [11] photocatalysis, [12,13] and heterogeneous catalysis [14,15] . It has been reported that cubic and hexagonal phases of ZnTiO 3 as catalyst support exhibit different catalytic performances in the steam reforming of methanol due to their different properties [14] .…”

“…Tuning support composition, support morphology, doping of supports with elements of different valency, surface modification has been employed as efficient strategies to enhance the metal-support interaction to improve the catalytic activity. [7] As one of the titanium-based perovskite oxides, ZnTiO 3 has attracted widespread attention in different frontier research fields due to its extraordinary potentials in electrode materials, [8] magnetic materials, [9] antibacterial materials, [10] gas sensors, [11] photocatalysis, [12,13] and heterogeneous catalysis. [14,15] It has been reported that cubic and hexagonal phases of ZnTiO 3 as catalyst support exhibit different catalytic performances in the steam reforming of methanol due to their different properties.…”