Results 251 to 260 of about 458,689 (285)

Effective adsorption of Au(III) and Cu(II) by chemically treated sheep wool and the binding mechanism

Journal of Environmental Chemical Engineering, 2020
Abstract Sheep wool as biosorbent materials was chemically modified by NaOH, Na2S, NaHSO3, and NaBH4 solution. The adsorption amounts of Au(III) were increased after the chemical treatment and the adsorption capacity of the chemically treated wool were performed in the following order; Na2S treated wool > NaBH4 treated wool > NaOH treated wool ...
Solongo Enkhzaya, Koichiro Shiomori, Bolormaa Oyuntsetseg   +2 more
openaire   +2 more sources

Characterization of metal-implanted polypyrrole — Studies of Au(III), Cu (II) and Pb (II) interactions

Synthetic Metals, 1997
Abstract Metal-deposited polypyrrole (Ppy) with the advantage of enhanced conductivities and catalysis has aroused interest in interactions between metal and Ppy. Recently, a Ppy-based NOx− sensor was found to be susceptible to interference from cations of Ag(I), Cu(II) and Pb(II) — hinting at a strong interaction between cation and Ppy.
Jong-Ru Rau, Show-Chuen Chen, Horng-Yi Tang   +2 more
openaire   +2 more sources

Biosorption of Au (III) and Cu (II) from Aqueous Solution by a Non‐Living Cetraria Islandica (L.) Ach.

Annali di Chimica, 2006
AbstractBiosorption of Au(III) and Cu(II) from dilute aqueous solutions was investigated by biomass of the non‐living Cetraria islandica (L.) Ach. The removal and recovery of gold and copper were studied by applying batch technique. The experimental parameters such as the pH of the solution, contact time, the amount of Cetraria islandica (L.) Ach ...
Turhan, Kadir, Akcin, Goksel, Dogan, Canan Ekinci, Aslan, Ali   +3 more
openaire   +6 more sources

Electrochemical Redox of Arsenic (Iii) and Cu (Ii) Mixtures with Ultraflat Au(111) Thin Films in Water

Electrochimica Acta, 2023
Tybur Q. Casuse-Driovínto, Angelica Benavidez, Noah Jemison, José M. Cerrato, Juan Feliu, Fernando H. Garzón   +5 more
openaire   +2 more sources

Ten metal complexes of vitamin B3/niacin: Spectroscopic, thermal, antibacterial, antifungal, cytotoxicity and antitumor studies of Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Pd(II), Cd(II), Pt(IV) and Au(III) complexes

Journal of Molecular Structure, 2012
Abstract Ten coordination compounds, namely Mn(NA)2Cl2·4H2O (1), Fe(NA)Cl3(H2O)2 (2), Co(NA)2(NO3)2·6H2O (3), Ni(NA)Cl2·5H2O (4), Cu(NA)Cl2·3H2O (5), Zn(NA)(NO3)2·H2O (6), Pd(NA)2Cl2·H2O (7), Cd(NA)Cl2·H2O (8), Pt(NA)2Cl4·5H2O (9) and Au(NA)Cl3 (10) were obtained by the reactions of the corresponding transition metal salts with vitamin B3/niacin (NA)
Foziah A. Al-Saif, Moamen S. Refat
openaire   +2 more sources

Selective Competitive Biosorption of Au(III) and Cu(II) in Binary Systems byMagnetospirillum gryphiswaldense

Separation Science and Technology, 2013
The biosorption of Au(III) and Cu(II) ions in both single and binary systems by Magnetospirillum gryphiswaldense (MSR-1) was investigated. For comparison with the selective reinforced competitive biosorption process in a binary system, the experimental research first explored the biosorption of Au(III) and Cu(II) in a single system under various ...
Jing Li, Fang Cai, Hao Lv, Jinsheng Sun
openaire   +2 more sources

Effects of Ag^I, Au^III, and Cu^IIon the Reductive Dechlorination of Carbon Tetrachloride by Green Rust

Environmental Science & Technology, 2003
Green rusts (GRs), mixed iron(II)/iron(III) hydroxide minerals found in many suboxic environments, have been shown to reduce a range of organic and inorganic contaminants, including several chlorinated hydrocarbons. Many studies have demonstrated the catalytic activity of transition metal species in the reduction of chlorinated hydrocarbons, suggesting
Edward J, O'Loughlin, Kenneth M, Kemner, David R, Burris   +2 more
openaire   +3 more sources

Voltammetric and EQCM Studies on Selenium(IV) at Mercury, Gold and Glassy Carbon Electrodes in the Presence of Cu(II), Au(III), Pb(II) and Cd(II)

Electroanalysis, 1998
Cyclic voltammetry (CV), adsorptive stripping voltammetry (AdSV) and electrochemical quartz crystal microbalance (EQCM) were employed to study the behavior of selenium(IV) at the mercury, gold and glassy carbon electrodes. Optimum measurement parameters and stock solution compositions were established. Selenium(IV) was studied in the presence of copper,
Zbigniew Fijaľek, Anna Ľozak, Katarzyna Sarna   +2 more
openaire   +2 more sources

Separation of Au(III) from hydrochloric acid solutions containing Pd(II), Cu(II) and Ni(II) by solvent extraction with a mixture of Cyanex 272 and TBP

Gold Bulletin, 2023
Thi Nhan Hau Nguyen, Si Joeng Song, Man Seung Lee   +2 more
openaire   +2 more sources

Adsorption selectivity and dynamic adsorption behaviors of Cu(II), Ag(I), and Au(III) on silica gel encapsulated by amino functionalized polystyrene

Journal of Applied Polymer Science, 2010
AbstractAdsorption of precious metal ions from aqueous solutions has earned great concern recently due to environmental protection factor and the value of precious metals. In this article, a novel adsorbent silica gel microspheres encapsulated by amino functionalized polystyrene (SG‐PS‐NH2) has been synthesized, and the adsorption selectivity and the ...
Qiang Xu, Ping Yin, Guifang Zhao, Yanzhi Sun, Rongjun Qu   +4 more
openaire   +2 more sources