Copper-Decorated Titanate Nanosheets: Novel Homogeneous Monolayers with a Superior Capacity for Selective Isolation of Hemoglobin.

摘要: Novel unilamellar and homogeneous titanate nanosheets were prepared by anchoring (3-aminopropyl)triethoxysilane (APTES) chelating copper ions, also know the short form Cu-APTES-TiNSs. The uniform two-dimensional lamellas/monolayers with a thickness of 1.9 nm, they further characterized atomic force microscopy, scanning electron transmission Fourier transform infrared spectra, X-ray diffraction, photoelectron spectroscopy, inductively coupled plasma mass spectrometry, N2 adsorption–desorption. copper-decorated possess content 4.28 ± 0.14% exhibit favorable selectivity to adsorption hemoglobin, considerable capacity 5314.2 mg g–1. adsorbed hemoglobin is easily collected recovery rate 91.3% using 0.5% w/v sodium dodecyl sulfate as an eluent. Circular dichroism spectra confirmed that virtually no conformational alteration observed for hemoglobin. Cu-APTES...