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Micro-/Nano-Dual-Scale Porous Composite Membranes for the Separation of Nanopollutants from Water

Penulis : Wanyuan Gui [-]
Kontributor / Dosen Pembimbing :
  • Junpin Lin,Jianru Liang, Yuhai Qu, Yingchao Guo, Kuang Lv,, Hui Zhang
Jenis Koleksi : Jurnal elektronik
Penerbit : Kimia
Fakultas : Fakultas Matematika dan Ilmu Pengetahuan Alam
Subjek : Chemistry
Kata Kunci : powder metallurgy, TiAl porous alloys, Kirkendall effect, micro-/nano-dual-scale, nanopollutant separation
Sumber : Cite This: ACS Appl. Nano Mater. 2019, 2, 806?811
Staf Input/Edit : Latifa Noor  
File : 1 file
Tanggal Input : 24 Mei 2019

Novel micro-/nano-dual-scale porous composites have been fabricated for nanopollutant filtration by powder metallurgy via four-step sintering of Ti, Al, and Nb powders incorporated with SiO2/ZrO2/Y2O3/ MgO/ZnO nanoparticles, respectively. Afterward, phase formation, surface morphology, and pore features of the porous composites have been characterized with the changes of heat-treatment temperatures and additive nanoparticles. The separation efficiency of as-prepared Ti-48Al-6Nb porous alloy and porous composite membranes for 50 mg/L TiO2 nanopollutants from pure water can be calculated through determining the change of TiO2 concentrations after filtration. Compared with the Ti-48Al-6Nb porous alloy membrane with a separation efficiency of 89.91%, all porous composite membranes can enhance the separation efficiency up to 99.80%. In particular, favorable contributions of the porous composite membrane with nano-SiO2 are further ascertained by maintaining a high separation efficiency of above 99.95% after repeated filtration of 100 times.

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