In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2016, No. 35 ( 2016-12), p. 5456-5466
Abstract:
Two simple pathways using metallic copper or copper salts are proposed for the synthesis of hybrid compounds under mild conditions. A variety of Strandberg‐ and mixed‐metal Keggin‐based products, namely, (NH 4 ) 5 n {[Cu(en) 2 ][PMo 8 V 4 O 40 ]} n · 9 n H 2 O ( 1 ), (NH 4 ) 4 n {[Cu(en)(H 2 O)][P 2 Mo 5 O 23 ]} n · 3.5 n H 2 O ( 2 ), (NH 4 ) 7 [PMo 8 V 4 O 40 ] · 17H 2 O ( 3 ) and (NH 4 ) 2 n {[Cu(en) 2 ][Cu(en)(H 2 O)][P 2 Mo 5 O 23 ]} n · 3 n H 2 O ( 4 ), were isolated upon the variation of the composition of the reaction system. A rare four‐substituted [PMo 8 V 4 O 40 ] 7– Keggin anion was obtained. The influence of the vanadium source [V 2 O 5 , NH 4 VO 3 or (NH 4 ) 2 V 6 O 16 ] and the copper precursor (copper powder vs. copper salts) on the nature of the resulting products was studied. An ex situ electron paramagnetic resonance (EPR) spectroscopy study revealed the formation of V IV and Cu II centres in the reaction mixture during Cu 0 dissolution. The obtained compounds possess electrocatalytic activity in the reduction of iodate and nitrite anions, and a carbon‐paste electrode modified with 4 exhibited a linear current response to l ‐cysteine. Furthermore, 4 demonstrated rapid and almost complete adsorption of a cationic dye.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2016.35
DOI:
10.1002/ejic.201600976
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1475009-0
detail.hit.zdb_id:
1409951-2
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