Vanadyl Phthalocyanine Films and Their Hybrid Structures with Pd Nanoparticles: Structure and Sensing Properties

Sensors

Nataliya Nikolaeva¹  Tamara Basova¹  Darya Klyamer¹  Natalya Morozova¹  Aleksandr Sukhikh¹ 

[1] Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrentiev Pr. 3, Novosibirsk 630090, Russia;

关键词: vanadyl phthalocyanine;    thin films;    chemiresistive sensors;    palladium nanoparticles;    hydrogen;    ammonia;   

DOI  :  10.3390/s20071893

来源: DOAJ

【 摘 要 】

In this work, thin films of vanadyl phthalocyanines (VOPc and VOPcF₄) are studied as active layers for the detection of gaseous ammonia and hydrogen. The effect of F-substituents on the structural features of vanadyl phthalocyanine films and their sensor response toward ammonia (10–50 ppm) and hydrogen (100–500 ppm) is investigated by X-ray diffraction (XRD) and chemiresistive methods, respectively. It is shown that the sensor response of VOPcF₄ films to ammonia is 2–3 times higher than that of VOPc films. By contrast, the sensor response to hydrogen is higher in the case of VOPc films. Apart from this, the hybrid structures of vanadyl phthalocyanine films with Pd nanoparticles deposited on their surface by a chemical vapor deposition method are also tested to reveal the effect of Pd nanoparticles on the sensitivity of VOPc films to hydrogen. Deposition of Pd nanoparticles on the surface of VOPc films leads to the noticeable increase of their sensitivity to hydrogen.

【 授权许可】

Unknown