纯度（Purity）：�?9%　　　　

层数（Layer number）：<5

厚度（Thickness）：0.8-6.4nm

粒径（Diameter）：0.8-3.8μm

氧含量（Oxygen content）：�?5wt.%

1.SEM of -COOH Functionalized Graphene

2.XRD of -COOH Functionalized Graphene

3.IR of -COOH Functionalized Graphene

4.EDS of -COOH Functionalized Graphene

Element	Wt%	At%
CK	61.62	75.62
OK	26.28	24.39
Matrix	Correction	ZAF