Skip to main content

Table 1 Fitting results of the EXAFS spectra of Cu2+ sorbed on biogenic manganese oxide

From: Absorption mechanisms of Cu2+ on a biogenic bixbyite-like Mn2O3 produced by Bacillus CUA isolated from soil

Sample

Cu-O

Cu-Mn

R(Ã…)a

CNb

σ2(Å2)c

R(Ã…)a

CNb

σ2(Å2)c

Cu2+(aq)

1.953

4.0d

0.007

-

-

-

(0.001)

 

(0.001)

   

Cu(OH)2

1.948

4.1

0.005

-

-

-

(0.001)

(0.3)

(0.001)

   

Cu(Ac)2

1.946

4.0

0.005

   

(0.001)

(0.2)

(0.001)

   

pH6.0-Cu0.4

1.945

4.2

0.006

3.371

1.7

0.017

(0.001)

(0.3)

(0.001)

(0.001)

(0.3)

(0.009)

pH6.0-Cu4.0

1.944

4.0

0.006

3.440

0.7

0.019

(0.001)

(0.1)

(0.001)

(0.001)

(0.3)

(0.010)

  1. aInteratomic distance
  2. bCoordination number
  3. cthe Debye-Waller factor, with in brackets the average error
  4. dNumber fixed during fit
Back to article page

Geochemical Transactions

ISSN: 1467-4866

Contact us