| 초록 |
It was synthesized copper sulfide particles at 42, 57, 77 and 92℃ by using 1 M CuSO4∙5H2Oand1 M CuSO4∙5H2Oinaqueousolution to remove efficiently gaseous formaldehyde indoor. The copper sulfide is Cu0.97Sandhascrystalpeakssuchas27.68°(101), 29.28°(102), 31.79°(103), 32.85°(006), 47.94°(110) and 52.72°(108). Average crystallite size was calculated by Scherrer' equation and was 0.24, 0.18, 0.12 and 0.07 nm at 42, 57, 77 and 92 ℃, respectively. Its average crystallinity was 58.3, 60.2, 62.1 and 63.9 % at 42, 57, 77 and 92 ℃, respectively. Adsorption capacity of the copper sulfide were 37.4, 38.0, 38.1 and 39.8 %, respectively, in 1 h and were 25.3, 30.6, 34.4 and 37.7 %, respectively, in 5 h at 42, 57, 77 and 92 ℃. The adsorption capacity of copper sulfide was higher with an increasing time from 42 ℃ to 92 ℃ and the adsorption capacity of copper sulfide at 92 ℃ was the highest. The copper sulfide from this study was used a functional fillers for indoor construction materials and it could remove efficiently gaseous formaldehyde. |
