Facile Synthesis of Self-Assembled NiFe Layered Double Hydroxide-Based Azobenzene Composite Films with Photoisomerization and Chemical Gas Sensor Performances | Zendy

Ying He | Zendy; Ran Wang | Zendy; Chen-Guang Sun | Zendy; Shufeng Liu | Zendy; Jingxin Zhou | Zendy; Lexin Zhang | Zendy; Tifeng Jiao | Zendy; Qiuming Peng | Zendy

Open Access

Facile Synthesis of Self-Assembled NiFe Layered Double Hydroxide-Based Azobenzene Composite Films with Photoisomerization and Chemical Gas Sensor Performances

Author(s) -

Ying He,

Ran Wang,

Chen-Guang Sun,

Shufeng Liu,

Jingxin Zhou,

Lexin Zhang,

Tifeng Jiao,

Qiuming Peng

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b04290

Subject(s) - azobenzene , photoisomerization , materials science , diffractometer , composite number , fourier transform infrared spectroscopy , thin film , chemical engineering , hydroxide , scanning electron microscope , photochemistry , nanotechnology , composite material , organic chemistry , catalysis , chemistry , polymer , isomerization , engineering

Two kinds of layered double hydroxide (LDH) Langmuir composite films containing azobenzene (Azo) groups were successfully prepared by Langmuir-Blodgett (LB) technology. Then, an X-ray diffractometer (XRD), a transmission electron microscope (TEM), and an atomic force microscope (AFM) were used to investigate the structures of NiFe-LDH and the uniform morphologies of the composite LB films. The photoisomerization and acid-base gas sensor performances of the obtained thin film samples were tested by infrared visible (FTIR) spectroscropy and ultraviolet visible (UV-vis) spectroscropy. It is proved that the Azo dye molecules in the composite film are relatively stable to photoisomerization. In addition, the prepared composite films have high sensing sensitivity and good recyclability for acid-base response gases. The present research proposes a new clue for designing thin film materials for chemical gas response with good stability and sensitivity.

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