Flexible and high performance ammonia sensor based on self-assembled PANI-TiO2-Au ternary composite film

In this work, a flexible ammonia (NH3) sensor was prepared by depositing PANI-TiO2-Au ternary composite film on polyimide (PI) substrate with gold interdigital electrodes through an integrated method of in situ chemical oxidation polymerization and electrostatic self-assembly technique. The morphology, structure, and chemical features of the PANI-TiO2-Au ternary composite film were characterized by scanning electron microscopy (SEM), atomic force microscope (AFM), ultraviolet-visible absorption spectrometer (UV-Vis), and X-ray photoelectron spectroscopy (XPS). And the NH3 response performances and flexibility of the PANI-TiO2-Au sensor were evaluated at room temperature. results showed that the PANI-TiO2-Au ternary composite film with hierarchical-structure was deposited on the PI successfully. And, the flexible PANI-TiO2-Au sensor presented high response (89.7%-184.4%) and short response times (52 s-131 s) for 10-50 ppm NH3, and it also displayed relatively stable response and ultra-low detectable concentration after 1000 bending/extending cycles, which should probably benefit from the good adhesion and flexibility of the PANI-TiO2-Au ternary composite film. Therefore, the flexible PANI-TiO2-Au sensor holds great promise for application into hand-held or wearable electronic devices for NH3 detection.

[1]  G. Lu,et al.  The room temperature gas sensor based on Polyaniline@flower-like WO3 nanocomposites and flexible PET substrate for NH3 detection , 2018 .

[2]  Q. Wei,et al.  Facile fabrication of flexible SiO2/PANI nanofibers for ammonia gas sensing at room temperature , 2018 .

[3]  P. K. Guha,et al.  Ammonia vapour sensing properties of in situ polymerized conducting PANI-nanofiber/WS2 nanosheet composites , 2018 .

[4]  Yadong Jiang,et al.  A high-performance flexible gas sensor based on self-assembled PANI-CeO2 nanocomposite thin film for trace-level NH3 detection at room temperature , 2017 .

[5]  Yuanjie Su,et al.  Enhanced ammonia-sensing properties of PANI-TiO2-Au ternary self-assembly nanocomposite thin film at room temperature , 2017 .

[6]  D. K. Aswal,et al.  Flexible camphor sulfonic acid-doped PAni/α-Fe2O3 nanocomposite films and their room temperature ammonia sensing activity , 2017 .

[7]  S. Annapoorni,et al.  Flexible room temperature ammonia sensor based on polyaniline , 2017 .

[8]  S. Chockalingam,et al.  Strategy to synthesise nano-engineered polymer nanocomposite with a mechanically strong interface: a highly flexible ammonia gas sensor , 2016 .

[9]  Jing Yan,et al.  Magnetic graphene@PANI@porous TiO2 ternary composites for high-performance electromagnetic wave absorption , 2016 .

[10]  A. Hasani,et al.  Highly sensitive and flexible ammonia sensor based on S and N co-doped graphene quantum dots/polyaniline hybrid at room temperature , 2016 .

[11]  Nae-Eung Lee,et al.  Flexible Transparent Reduced Graphene Oxide Sensor Coupled with Organic Dye Molecules for Rapid Dual‐Mode Ammonia Gas Detection , 2016 .

[12]  Dianqing Li,et al.  Polyaniline@SnO2 heterojunction loading on flexible PET thin film for detection of NH3 at room temperature , 2016 .

[13]  T. Syrový,et al.  Gravure-printed ammonia sensor based on organic polyaniline colloids , 2016 .

[14]  L. Si,et al.  Synthesis of novel graphene oxide/pristine graphene/polyaniline ternary composites and application to supercapacitor , 2016 .

[15]  Dianqing Li,et al.  Hierarchical polyaniline microspheres loading on flexible PET films for NH3 sensing at room temperature , 2016 .

[16]  S. Abdulla,et al.  Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection , 2015 .

[17]  Xiaodong Chen,et al.  Flexible Transparent Films Based on Nanocomposite Networks of Polyaniline and Carbon Nanotubes for High-Performance Gas Sensing. , 2015, Small.

[18]  D. K. Aswal,et al.  Simple and low-temperature polyaniline-based flexible ammonia sensor: a step towards laboratory synthesis to economical device design , 2015 .

[19]  S. Navale,et al.  Ultra-sensitive polyaniline–iron oxide nanocomposite room temperature flexible ammonia sensor , 2015 .

[20]  Lei Liao,et al.  Hydrogen gas sensor based on metal oxide nanoparticles decorated graphene transistor. , 2015, Nanoscale.

[21]  Nathalie Redon,et al.  Ultra sensitive ammonia sensors based on microwave synthesized nanofibrillar polyanilines , 2014 .

[22]  Q. Li,et al.  Enhanced sensitivity and stability of room-temperature NH₃ sensors using core-shell CeO₂ nanoparticles@cross-linked PANI with p-n heterojunctions. , 2014, ACS applied materials & interfaces.

[23]  S. Navale,et al.  SnO2nanoparticles-modified polyaniline films as highly selective, sensitive, reproducible and stable ammonia sensors , 2014, Electronic Materials Letters.

[24]  O. Monereo,et al.  New procedures for building-up the active layer of gas sensors on flexible polymers , 2013 .

[25]  Shun Mao,et al.  Ultrafast hydrogen sensing through hybrids of semiconducting single-walled carbon nanotubes and tin oxide nanocrystals. , 2012, Nanoscale.

[26]  M. Matsuguchi,et al.  Properties and stability of polyaniline nanofiber ammonia sensors fabricated by novel on-substrate method , 2011 .

[27]  S. L. Patil,et al.  Room Temperature Ammonia Gas Sensor Based on Polyaniline-TiO$_{2}$ Nanocomposite , 2011, IEEE Sensors Journal.

[28]  Shuangxi Xing,et al.  Examining the use of TiO2 to enhance the NH3 sensitivity of polypyrrole films , 2010 .

[29]  Q. Xue,et al.  NH3 and HCl sensing characteristics of polyaniline nanofibers deposited on commercial ceramic substrates using interfacial polymerization , 2010 .

[30]  Shan Jiang,et al.  Au nanoparticles-functionalized two-dimensional patterned conducting PANI nanobowl monolayer for gas sensor , 2009 .

[31]  Xi Zhang,et al.  Full view of single-molecule force spectroscopy of polyaniline in oxidized, reduced, and doped states. , 2009, Langmuir : the ACS journal of surfaces and colloids.

[32]  G. Wallace,et al.  Polymerisation and characterisation of conducting polyaniline nanoparticle dispersions , 2004 .

[33]  S. Pruneanu,et al.  Characterization of polyaniline by cyclic voltammetry and UV-Vis absorption spectroscopy , 1999 .