Abstract
In this work, copper-based titanium sorbents (CuOx/TiO2) synthesized by sol–gel method were used to remove arsine (AsH3) at low temperatures. The Cu content, calcination temperature, pH, oxygen concentration, and reaction temperature were the five key factors that were determined and analyzed in this work. The optimum breakthrough adsorption capacity for arsine was promising and had the value of 534.3 mg/g for the Cu content of 20 wt %, calcination temperature of 400 °C, pH of 10, oxygen concentration of 2%, and reaction temperature of 120 °C. The chemical and structural features of the initial and arsine-exposed sorbents were analyzed using the Brunauer–Emmett–Teller method, X-ray diffraction analysis, temperature-programmed desorption of carbon dioxide, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. It was found that the contents of anatase and rutile TiO2 in sorbents could be regulated by changing the pH of sorbents. Additionally, at pH of 1...
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