2.3. Fabrication of NST-GO membranes
The reduced GO membranes were fabricated by directly filtering 5 mL GO
nanosheets dispersion onto the polycarbonate substrate, followed by the
hydrazine reduction. Similarly, the reduced Ni(OH)2@GO
membranes were fabricated by reduction after directly filtering
Ni(OH)2@GO nanosheets dispersion onto the polycarbonate
substrate. Afterwards, the hydrochloric acid aqueous solution (pH 2, 10
mL) was filtered across the reduced Ni(OH)2@GO membranes
to dissolve Ni(OH)2 nanosheets for forming the
nanosheet-templated channels. The obtained membranes were the expected
NST-GO membranes. Besides, for comparison, parts of NST-GO membranes
were reduced by hydrazine to fabricate the reduced NST-GO membranes.