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TiO_2 particles with desirable properties were produced by undergoing specific durations of ball milling.Characterizations of the TiO_2 particles before and after ball milling were investigated via X-ray diffraction(XRD), Brunauer-Emmett-Teller(BET), particle size analysis, zeta potential, and scanning electron microscope(SEM). The equilibrium adsorption data were well fitted to Langmuir, Freundlich, and Dubinin-Radushkevich(D-R) isotherms. Compared to the as-received TiO_2(mean particle size d150= 0.78μm, specific surface area = 88.17 m~2g~(-1), pore volume = 0.41 cm~3g~(-1)), the 60 min ballmilled TiO_2(d50= 0.55 μm, specific surface area = 99.48 m2g~(-1), pore volume = 0.48 cm3g~(-1)) enhanced the adsorption quantity of congo red and methylene blue from 10.4 mg g~(-1)to 13.6 mg g~(-1), and from17.0 mg g~(-1)to 22.2 mg g~(-1), respectively; and also improved the kinetic rates from k = 0.1325 to 0.2193, and k = 0.0944 to 0.1553, respectively. Dye adsorption and degradation efficiency of congo red was enhanced in acidic p H range(2–5.14), and methylene blue was enhanced in alkaline p H range(7.58–12).
TiO 2 particles with desirable properties were produced by undergoing specific durations of ball milling. Characterizations of the TiO 2 particles before and after ball milling were investigated via X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) potential to, and scanning electron microscope (SEM). The equilibrium adsorption data were well fitted to Langmuir, Freundlich, and Dubinin-Radushkevich (DR) isotherms. Compared to as-received TiO 2 (mean particle size d 150 = 0.78 μm, specific surface area = 88.17 m ~ 2g ~ (-1), pore volume = 0.41 cm ~ 3g ~ (-1)), the 60 min ballmilled TiO_2 (d50 = 0.55 μm, = 0.48 cm3g ~ (-1)) enhanced the adsorption quantity of congo red and methylene blue from 10.4 mg g ~ (-1) to 13.6 mg g ~ (-1), and from17.0 mg g ~ (-1) to 22.2 mg g -1, respectively; and also improved the kinetic rates from k = 0.1325 to 0.2193, and k = 0.0944 to 0.1553, respectively. Dye adsorption and degradation efficienc y of congo red was enhanced in acidic p H range (2-5.14), and methylene blue was enhanced in alkaline p H range (7.58-12).