Unraveling Agglomeration and Deagglomeration in Aqueous Colloidal Dispersions of Very Small Tin Dioxide Nanoparticles

A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin dioxide (SnO2) at a specific percentage. The PANI/SnO2 hybrid material obtained is then ground at room temperature. The results of scanning electron microscopy show that the prepared powder comprises nanoscale particles and has good dispersibility, which is conducive to gas adsorption. The thermal decomposition temperature of the powder and its stability are measured using a differential thermo gravimetric analyzer. At 20 °C, the ammonia gas and benzene vapor gas sensing of the PANI/SnO2 hybrid material was tested at concentrations of between 1 and 7 ppm of ammonia and between 0.4 and 90 ppm of benzene vapor. The tests show that the response sensitivities to ammonia and benzene vapor are essentially linear. The sensing mechanisms of the PANI/SnO2 hybrid material to ammonia and benzene vapors were analyzed. The results demonstrate that doped SnO2 significantly affects the sensitivity, response time, and recovery time of the PANI material.

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Theoretical prediction of transport coefficients of antimony doped tin dioxide

Ceramics International ◽

10.1016/j.ceramint.2021.02.091 ◽

2021 ◽

Vol 47 (11) ◽

pp. 15277-15281

Author(s):

Rundong Wan ◽

Kaicheng Jiang ◽

Zhengfu Zhang ◽

Ying Lei ◽

Guocai Tian

Keyword(s):

Theoretical Prediction ◽

Tin Dioxide ◽

Transport Coefficients

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Cu/Ni colloidal dispersions stabilised by calcium and barium stearates for the amination of oxo-alcohols

Catalysis Letters ◽

10.1007/bf00807469 ◽

1996 ◽

Vol 40 (1-2) ◽

pp. 123-130 ◽

Cited By ~ 14

Author(s):

H. Kimura ◽

H. Taniguchi

Keyword(s):

Colloidal Dispersions

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Hierarchical goethite nanoparticle and tin dioxide quantum dot anchored on reduced graphene oxide for long life and high rate lithium-ion storage

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2021.01.079 ◽

2021 ◽

Vol 590 ◽

pp. 580-590

Author(s):

Qingke Tan ◽

Shouchun Bao ◽

Xiangli Kong ◽

Xiang Zheng ◽

Zhengguan Xu ◽

...

Keyword(s):

Graphene Oxide ◽

Quantum Dot ◽

Reduced Graphene Oxide ◽

Tin Dioxide ◽

Lithium Ion ◽

High Rate ◽

Reduced Graphene ◽

Ion Storage ◽

Long Life

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Long-term stability of an ambient self-curable latex based on colloidal dispersions in water of two reactive polymers

Journal of Polymer Science Part A Polymer Chemistry ◽

10.1002/pola.20731 ◽

2005 ◽

Vol 43 (12) ◽

pp. 2598-2605 ◽

Cited By ~ 3

Author(s):

Xiaonong Chen ◽

Robert Pelton ◽

Eli Ruckenstein

Keyword(s):

Colloidal Dispersions ◽

Term Stability ◽

Long Term Stability ◽

Reactive Polymers

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Synthesis and characterization of Fe, Co, and Ni colloids in 2-mercaptoethanol

Nanomaterials and Nanotechnology ◽

10.1177/1847980420966883 ◽

2020 ◽

Vol 10 ◽

pp. 184798042096688

Author(s):

Galo Cárdenas-Triviño ◽

Sergio Triviño-Matus

Keyword(s):

Electron Microscopy ◽

Electron Diffraction ◽

Colloidal Dispersions ◽

Synthesis And Characterization ◽

X Ray ◽

Transmission Electron ◽

Vis Spectroscopy ◽

Chemical Liquid Deposition ◽

Liquid Deposition

Metal colloids in 2-mercaptoethanol using nanoparticles (NPs) of iron (Fe), cobalt (Co), and nickel (Ni) were prepared by chemical liquid deposition method. Transmission electron microscopy, electron diffraction, UV-VIS spectroscopy, and scanning electron microscopy with electron dispersive X-ray spectroscopy characterized the resulting colloidal dispersions. The NPs exhibited sizes with ranges from 9.8 nm for Fe, 3.7 nm for Co, and 7.2 nm for Ni. The electron diffraction shows the presence of the metals in its elemental state Fe (0), Co (0), and Ni (0) and also some compounds FeO (OH), CoCo2S4, and NiNi2S4.

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