This study provides a facile way to improve the cycle ability of transition oxides for reversible lithium-ion storage. To our knowledge, this strategy may be the rst report on heterogeneous branched coreshell SnO 2-PANI nanorod arrays. These SnO2C core-shell spheres are promising anodes for lithium ion batteries. Thus, enhanced rate capability and cyclability of heterogeneous branched coreshell SnO 2PANI nanorod arrays can be anticipated. Thus, the proposed SnO 2–ZnO–Pt NS gas sensors demonstrate great potential as a high-performance sensing material for application in H 2S gas sensors. 2 nanorod core by the PANI shell, ensuring the excellent structure stability. The resultant SnO2C yolk-shell nanospheres possess a hollow highly crystalline SnO2 core (280-380 nm), tailored carbon shell thickness (15-25 nm) and a large void space size (100-160 nm), a high surface area (205 m 2 g-1), a large pore volume (0. Coreshell-structured SnO 2 C microspheres have been synthesized through a one-pot rapid microwave hydrothermal treatment, which is a template-free method with environment-friendly and inexpensive starting materials.
#Sno2 core shell download#
These substantially improved sensing properties could be mainly attributed to the formation of heterojunctions, catalytic sensitization effect, and increased specific surface area of Pt NP modification. Download scientific diagram Repeatability of ZnO/SnO2 coreshell nanorods exposed to 20 ppm ethanol at the operating temperature of 225 ☌. The synthesis is easy to operate and allows tailoring the carbon shell thickness and void space size. Their rate of resistance change was 29.43, which was about 24 and 9 times those of the pristine SnO 2 NS (∼1.25) and SnO 2–ZnO core–shell NS (∼3.43) sensors, respectively. To be specific, the SnO 2–ZnO–Pt NSs displayed a high sensitivity ( R a/ R g) of 30.43 and an excellent selectivity when detecting 5 ppm H 2S at an operating temperature of 375 ☌. Particularly, the sensor base on the fabricated WO3SnO2 nanosheets with 20-nm SnO2 shell layer demonstrated superior gas sensing performance with the highest response (1.
#Sno2 core shell series#
More importantly, the SnO 2–ZnO–Pt NS sensing materials were synthesized in situ on microelectromechanical system (MEMS) devices, which are expected to be high-performance gas sensors with superior sensitivity, great selectivity, good reproducibility, and low power consumption. By tuning the thickness of SnO2 layer via atomic layer deposition, a series of WO3SnO2 core-shell nanosheets with tunable sensing properties were realized.
The reversible capacity of SnO2/WO3 coreshell nanorods is 845.9mAhg 1, higher than that of bare WO3 nanorods, SnO2 nanostructures, and traditional theoretical results.
#Sno2 core shell pdf#
Pt nanoparticle (NP)-modified SnO 2–ZnO (SnO 2–ZnO–Pt) core–shell nanosheets (NSs) for hydrogen sulfide (H 2S) gas sensing were successfully synthesized via atomic layer deposition, hydrothermal method, and magnetron sputtering. PDF WO3 nanorods are uniformly coated with SnO2 nanoparticles via a facile wet-chemical route.
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