Zinc Oxide Nanofiber Gas Sensors Via Electrospinning

Abstract

Zinc oxide (ZnO) nanofibers with an average diameter of 150 nm were synthesized by electrospinning. The morphology and structure of the as‐prepared ZnO nanofibers have been characterized by scanning electron microscopy, transmission electron microscopy, and X‐ray diffraction, respectively. The as‐prepared ZnO nanofibers exhibit excellent sensing properties against ethanol at an operating temperature of 300°C, including a rapid response (time ∼3 s) and recovery (time ∼8 s), super sensitivity, and high selectivity, which makes our product a good candidate for fabricating gas sensors in practice.

Humidity sensing properties of ZnO-based fibers by electrospinning

“…nanorods [2,6], nanowires [2,3], nanoparticles [7], nanotetrapods [8], or nanofibers [9][10][11][12][13][14], and their influence on the humidity sensing performance. Many available techniques such as carbothermal reduction synthesis [15], chemical vapor deposition (CVD) [16], electrospinning [12], hydrothermal synthesis [17], vapor-liquid-solid (VLS) [18], conventional precipitation [19,20] have been attempted to obtain nanostructures. Among them, electrospinning provides a convenient and facile route for the fabrication of fibrous materials possessing high surface area to volume ratio, uniform diameters and variety of composition.…”

Electrospun Nanofiber-Based Sensors

“…[29]. © 2012 Springer; b: Reprinted with permission from Wang et al [30]. ©2008 Wiley Periodicals, Inc.; c: Reprinted with permission from Huang et al [31].…”

ENHANCED ACTIVITY OF C3N4 WITH ADDITION OF ZnO FOR PHOTOCATALYTIC REMOVAL OF PHENOL UNDER VISIBLE LIGHT

“…Zinc acetate dihydrate (Zn(CH 3 COO) 2 .2H 2 O, QRëC, 99.5%) was used as the precursor to synthesize the ZnO. The Zn(CH 3 COO) 2 .2H 2 O (15 g) was calcined at 550 °C with a rate of 2.2 °C/min and tempered for another 4 h. The resulted solid was white in colour and was ground before it was used.…”

“…The Zn(CH 3 COO) 2 .2H 2 O (15 g) was calcined at 550 °C with a rate of 2.2 °C/min and tempered for another 4 h. The resulted solid was white in colour and was ground before it was used.…”

“…The samples were labelled as ZnO-C 3 N 4 (x) with x shows the ratio of zinc present in the sample. For a typical synthesis of ZnO-C 3 N 4 (1), Zn(CH 3 COO) 2 .2H 2 O (0.0716 g) was dissolved in methanol (20 mL). The C 3 N 4 (1 g) was then added slowly into the solution, stirred and dried at 80 °C on a hot plate until drying.…”