期刊
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
卷 40, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colcom.2020.100353
关键词
Photocatalysis; Titanium dioxide; Degradation; Metal ions; Composite
资金
- Ministry of Higher Education, Malaysia under the Fundamental Research Grant Scheme [FRGS/1/2019/STG07/UNIMAS/02/3, F07/FRGS/1880/2019]
- Universiti Malaysia Sarawak under the Tun Openg Chair [F07/TOC/1737/2018]
- Universiti Malaysia Sarawak under the Zamalah Postgraduate Scholarship
The successful synthesis of the TiO2/PKSAC/Fe3O4 composite material showed high removal efficiency for mixed heavy metal pollutants, even in the presence of coexisting ions, with good regenerative stability. This composite material can be effectively used for heavy metal removal in wastewater.
An effective material to assist in the elimination of heavy metal contaminants in the water system is necessary, as they persist for a long period in the environment. A novel multifarious TiO2/PKSAC/Fe3O4 composite with combined properties namely adsorption, photocatalytic and magnetic was successfully synthesized and applied for the simultaneous removal of mixed heavy metals, Pb(II), Cu(II), and Ni(II) under various conditions. Characterizations confirmed the fabrication of TiO2/PKSAC/Fe3O4 composite. An optimal adsorbent dosage of 0.9 g/L allowed >80% removal efficiency in 10 ppm of mixed metal ions solution. Among all three catalyst ratios, the equivalent mass ratio of 1:1:1 (TiO2/PKSAC/Fe3O4) demonstrated the best performance (>72%) in removing Pb (II), Cu(II), and Ni(II) ions, even after the addition of coexisting ions (Ca2+, Na+, Cl-, Br-) during the treatment. A recycling study confirmed the materials' regenerative stability. The fabricated TiO2/PKSAC/Fe3O4 composite can be applied as an effective material for heavy metals removal in wastewater.
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