Abstract
An atomic implantation method was used to modify diatomite with CuCl. The CuCl/diatomite samples were characterized by different techniques, including FTIR, XRD, BET, SEM-TEM, EDX, and CO-TPR. Characterization results revealed the formation of CuCl particles of 50–60 nm highly dispersed on diatomite surface. CO adsorption measurements showed that 2CuCl/diatomite exhibits the highest CO adsorption capacity among all CuCl-modified samples with diatomite. Its CO adsorption capacity of 2.96 mmol/g at 30°C is 10 times higher than that of unmodified diatomite (0.29 mmol/g). The CO adsorption on CuCl-modified diatomites was found to fit well with the Langmuir–Freundlich model.
Highlights
Carbon monoxide (CO) is a toxic gas and metabolic waste, which is produced from the incomplete combustion of carbonaceous substances in coal stoves, thermal power plants, automobile engines, etc. [1,2,3,4]
CO poisoning is dangerous to human health because it reacts with hemoglobin in the blood to form carboxy-hemoglobin, which limits the transportation of oxygen in the blood and it may cause the death [5]. erefore, researchers are interested in high-efficiency carbon monoxide removal technology
Modification of diatomite with CuCl was achieved by using a novel “atomic implantation” method in which CuCl was incorporated into diatomite in a vapor phase. e loading of CuCl on diatomite was varied by repeating the CuCl incorporation times
Summary
Carbon monoxide (CO) is a toxic gas and metabolic waste, which is produced from the incomplete combustion of carbonaceous substances in coal stoves, thermal power plants, automobile engines, etc. [1,2,3,4]. Adsorbents for selective carbon monoxide adsorption such as metal-organic frameworks, zeolite, activated carbons, grapheme, and metal oxides have been reported in the literature [6,7,8,9,10,11,12,13,14,15]. Xue et al [14] synthesized CuCl-modified activated carbon (CuCl/AC), which showed a high CO adsorption capacity of 45.4 cm3/g, 4 times higher than that of activated carbon (11.5 cm3/g). Doping carbon xerogels with CuCl found to significantly increase its CO adsorption capacity [15]. He et al [12] synthesized the CuCl/MCM-41, ZnCl2/MCM-41, and Zn–Cu (I)/MCM-41 materials for CO adsorption. He et al [12] synthesized the CuCl/MCM-41, ZnCl2/MCM-41, and Zn–Cu (I)/MCM-41 materials for CO adsorption. e author reported that the materials CuCl/MCM-41, ZnCl2/
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