Table 1 EXAFS curve-fitting results.

From: Metallic tin quantum sheets confined in graphene toward high-efficiency carbon dioxide electroreduction

Sample

Path

N

R (Å)

σ2 (10−3Å2)

ΔE0 (eV)

Bulk Sn

Sn–Sn1

4.0

3.02

9.1

3.6

 

Sn–Sn2

2.0

3.18

10.5

3.6

15 nm Sn nanoparticles

Sn–Sn1

4.0

3.02

9.7

4.0

 

Sn–Sn2

2.0

3.18

12.0

4.0

Graphene confined Sn quantum sheets

Sn–Sn1(surface)

2.7

3.01

10.8

4.3

 

Sn–Sn1(interior)

4.0

3.02

9.3

4.3

 

Sn–Sn2(surface)

1.4

3.17

14.0

4.3

 

Sn–Sn2(interior)

2.0

3.18

10.7

4.3

  1. EXAFS, extended X-ray absorption fine structure.
  2. Structural parameters around Sn atoms extracted from EXAFS curve-fitting for the graphene confined Sn quantum sheets, 15 nm Sn nanoparticles and bulk Sn, respectively.
Back to article page