Title |
Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate
|
---|---|
Published in |
BMC Chemistry, November 2011
|
DOI | 10.1186/1752-153x-5-73 |
Pubmed ID | |
Authors |
Meng Wang, Qi Zhang, Wei Hao, Zhong-Xi Sun |
Abstract |
In this paper, the surface stoichiometry, acid-base properties as well as the adsorption of xanthate at ZnS surfaces were studied by means of potentiometric titration, adsorption and solution speciation modeling. The surface proton binding site was determined by using Gran plot to evaluate the potentiometric titration data. Testing results implied that for stoichiometric surfaces of zinc sulfide, the proton and hydroxide determine the surface charge. For the nonstoichiometric surfaces, the surface charge is controlled by proton, hydroxide, zinc and sulfide ions depending on specific conditions. The xanthate adsorption decreases with increasing solution pH, which indicates an ion exchange reaction at the surfaces. Based on experimental results, the surface protonation, deprotonation, stoichiometry and xanthate adsorption mechanism were discussed. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 41 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 13 | 32% |
Student > Bachelor | 6 | 15% |
Student > Master | 5 | 12% |
Researcher | 4 | 10% |
Professor | 2 | 5% |
Other | 7 | 17% |
Unknown | 4 | 10% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 9 | 22% |
Materials Science | 7 | 17% |
Physics and Astronomy | 5 | 12% |
Engineering | 4 | 10% |
Chemical Engineering | 3 | 7% |
Other | 4 | 10% |
Unknown | 9 | 22% |