Ultrarapid degradation of perfluorooctanoic acid (PFOA) by 2D ultrathin Bi/BiOCl@g-C3N4 nanosheets: Facet engineering and Bi surface plasmon resonance
Ultrarapid degradation of perfluorooctanoic acid (PFOA) by 2D ultrathin Bi/BiOCl@g-C3N4 nanosheets: Facet engineering and Bi surface plasmon resonance
研究概述
制备超薄Bi/BiOCl@g-C3N4纳米片，以BiOCl(101)晶面、异质界面及Bi表面等离子体效应促进载流子分离和活化。30分钟PFOA去除率92.3%，脱氟率24.8%，速率常数0.1059 min⁻¹；主要活性物种为超氧自由基、电子和空穴，去除率不等同于完全脱氟。
谱图与表征信息
Fig. 3. (a) XRD patterns of BiOCl, g-C3N4 and BiCN-2. (b) FTIR spectra of BiOCl, g-C3N4 and BiCN-2. (c) Total XPS spectrum of BiCN-2. (d-e) Bi 4f and O 1 s XPS spectrum of BiCN-2 and BiOCl. (f) N 1 s spectrum of BiCN-2 and g-C3N4. (g) Normalized XANES spectra at the Bi L3 edge for Bi foil, Bi2O3, and BiCN-2. (h) FT-EXAFS curves of BiCN-2. (i) WT-EXAFS contour maps of Bi L3 at the margins of BiCN-2.