Transformation of PVP coated silver nanoparticles in a simulated wastewater treatment process and the effect on microbial communities

Table 2 Structural parameters of sludges and standards derived from EXAFS analysis

Sample	Shell	CN^a	R^b	σ^2c
Aerobic sludges
Ag+	Ag – S	2.0	2.55	0.007
AgNP	Ag – S	1.6	2.51	0.005
	Ag – Ag	2.4	2.89	0.005
	Ag – Ag	3.0	3.09	0.006
	Ag – Ag	2.4	4.98	0.003
Anaerobic sludges
Ag⁺	Ag – S	2.0	2.48	0.008
AgNP	Ag – S	2.0	2.51	0.005
References
Ag₂S NP	Ag – S	1.5	2.52	0.004
	Ag – Ag	3.0	3.06	0.007
Ag-foil	Ag – Ag	12.0	2.86	0.001
Ag-GSH	Ag – S	2.0	2.49	0.003
	Ag – Ag	1.0	3.03	0.007
Ag-thiosulfate	Ag – Ag	1.0	2.52	0.002

^a Coordination number, ^b Interatomic bond distance (Å), ^c Debye-Waller factor.

ISSN: 2661-801X