Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate
<p>Abstract</p> <p>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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2011-11-01
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| Series: | Chemistry Central Journal |
| Online Access: | http://journal.chemistrycentral.com/content/5/1/73 |
| _version_ | 1798028303002501120 |
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| author | Wang Meng Zhang Qi Hao Wei Sun Zhong-Xi |
| author_facet | Wang Meng Zhang Qi Hao Wei Sun Zhong-Xi |
| author_sort | Wang Meng |
| collection | DOAJ |
| description | <p>Abstract</p> <p>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.</p> |
| first_indexed | 2024-04-11T19:05:47Z |
| format | Article |
| id | doaj.art-eccd3a1292c546e2a976f62c686e55cd |
| institution | Directory Open Access Journal |
| issn | 1752-153X |
| language | English |
| last_indexed | 2024-04-11T19:05:47Z |
| publishDate | 2011-11-01 |
| publisher | BMC |
| record_format | Article |
| series | Chemistry Central Journal |
| spelling | doaj.art-eccd3a1292c546e2a976f62c686e55cd2022-12-22T04:07:48ZengBMCChemistry Central Journal1752-153X2011-11-01517310.1186/1752-153X-5-73Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthateWang MengZhang QiHao WeiSun Zhong-Xi<p>Abstract</p> <p>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.</p>http://journal.chemistrycentral.com/content/5/1/73 |
| spellingShingle | Wang Meng Zhang Qi Hao Wei Sun Zhong-Xi Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate Chemistry Central Journal |
| title | Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| title_full | Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| title_fullStr | Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| title_full_unstemmed | Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| title_short | Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| title_sort | surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate |
| url | http://journal.chemistrycentral.com/content/5/1/73 |
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