Topic
Thermogravimetric analysis
About: Thermogravimetric analysis is a research topic. Over the lifetime, 37248 publications have been published within this topic receiving 862144 citations. The topic is also known as: thermal gravimetric analysis & TGA.
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TL;DR: In this paper, the preparation of conducting polymer-colloidal silica composites by the in situ deposition of a thin coating of chemically synthesized polyaniline or polypyrrole onto monodisperse silica particles (∼ 1 μm diameter) is described.
173 citations
TL;DR: In this paper, a stable solid base catalyst was used for the transesterification of soybean oil with methanol, to produce biodiesel, was carried out under batch conditions at refluxed methanoline over the CaO-SnO2 catalysts.
172 citations
TL;DR: In this paper, a paraffin/diatomite/MWCNTs composite PCM was designed for further applications in producing thermal energy storage cement-based composites.
172 citations
Abstract: ZIF-8 nanoparticles were prepared with a convenient method at room temperature. The morphology and components of the ZIF-8 were characterized by scanning electron microscopy (SEM), powder X-ray diffraction spectroscopy (PXRD), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR) and zeta potential analysis. The ZIF-8 nanoparticles were relatively stable under neutral and alkaline solutions, while their structure easily collapsed partially in the strong acidic aqueous solution. The adsorption kinetics and isotherms of ZIF-8 for tetracycline were evaluated in detail. The effects of key parameters such as pH, contact time, temperature and ionic strength on the adsorption of tetracycline were studied. The data on the adsorption of tetracycline on the ZIF-8 nanoparticles fitted well to the pseudo-second-order kinetics model, while the adsorption isotherm data can be explained respectively by the Langmuir isothermal model and the Freundlich isotherm model to varying degrees. The equilibrium quantity of tetracycline on ZIF-8 obtained in adsorption kinetic studies was 124.6 mg g−1 at 25 °C, while the value calculated by the Langmuir isotherm model was above 1000 mg g−1 at the same temperature. This implied that the adsorption capacity of ZIF-8 to tetracycline can be improved to a large extent. The analysis of the adsorption mechanism showed that electrostatic attraction and π–π stacking interaction both played crucial roles in the adsorption process. Regeneration experiments indicated that the used adsorbent still showed excellent applicability after four rounds of recycling.
172 citations
TL;DR: In this paper, the properties of carbonized polyaniline (PANI) nanotubes were compared with those of commercial multi-walled carbon nanitubes, using FTIR and Raman spectroscopies.
172 citations