caa a22 4500 475815939 CHVBK 20180406123810.0 cr unu---uuuuu 170329e20000801xx s 000 0 eng 10.1023/A:1004038909149 doi (NATIONALLICENCE)springer-10.1023/A:1004038909149 Reduction of hexavalent chromium by copper [Elektronische Daten] [S. Goeringer, N.R. de Tacconi, C.R. Chenthamarakshan, K. Rajeshwar] The galvanic reaction of metallic copper in Cr(VI)-laden aqueous solutions of varying pH was examined by in situ u.v.-visible spectrophotometry, rotating disc electrode chronopotentiometry and cyclic voltammetry. The galvanic reaction in 0.2 M H2SO4 solutions was pseudo first order in Cr(VI) concentration. Experiments with both magnetically stirred solutions and a copper mesh or a copper film in a rotating disc electrode configuration revealed the reaction to be diffusion-controlled with respect to Cr(VI) transport to the copper surface. Finally, cyclic voltammetry data in Cr(VI)-laden media of varying pH underline the important role of protons in the galvanic reaction. Kluwer Academic Publishers, 2000 environmental remediation nationallicence first-order kinetics nationallicence mass transport nationallicence medium pH nationallicence Goeringer S. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut de Tacconi N.R. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut Chenthamarakshan C.R. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut Rajeshwar K. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/8(2000-08-01), 891-897 0021-891X 30:8<891 2000 30 10800 https://doi.org/10.1023/A:1004038909149 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1004038909149 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goeringer S. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut NATIONALLICENCE 700 1- de Tacconi N.R. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut NATIONALLICENCE 700 1- Chenthamarakshan C.R. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut NATIONALLICENCE 700 1- Rajeshwar K. Department of Chemistry and Biochemistry, The University of Texas at Arlington, 76019-0065, Arlington, TX, USA aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/8(2000-08-01), 891-897 0021-891X 30:8<891 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer