Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution
Calcium silicate hydrate based on steel slag (SCSH) and Ni-doped SCSH (NSCSH) were synthesized under specific hydrothermal conditions at saturated vapor pressure and 185°C for 7 hours. The structure and morphology of SCSH and NSCSH were characterized by XRD, SEM, and N2 adsorption/desorption. SCSH m...
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/131050 |
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| author | Lu Zeng Ligang Yang |
| author_facet | Lu Zeng Ligang Yang |
| author_sort | Lu Zeng |
| collection | DOAJ |
| description | Calcium silicate hydrate based on steel slag (SCSH) and Ni-doped SCSH (NSCSH) were synthesized under specific hydrothermal conditions at saturated vapor pressure and 185°C for 7 hours. The structure and morphology of SCSH and NSCSH were characterized by XRD, SEM, and N2 adsorption/desorption. SCSH mainly consisted of amorphous calcium silicate hydrate gel (C-S-H gel) together with some flake-like tobermorite and NSCSH consisted of crystalline tobermorite and xonotlite. The addition of Ni(NO3)2 had great influence on microstructure of the composites, and SCSH possesses a mesoporous structure with slit-shaped pores, but NSCSH has narrow distributions of pore size. Furthermore, NSCSH has a higher adsorption capacity for Rhodamine B (RhB) than SCSH with removal percentages of RhB of about 52.4% and 88.2%, respectively. In addition, the effects of NSCSH dosage and pH values on the adsorption of RhB were investigated. Adsorption isotherm parameters are obtained from both Langmuir and Freundlich analysis and showed a better fit to a Langmuir model. All results indicated that NSCSH has a great potential to be a safe, easily-made, and cost-effective material for the control of RhB contamination. |
| format | Article |
| id | doaj-art-f1ef6bb16d9843c68b2ff0cd8121c665 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
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| series | Journal of Chemistry |
| spelling | doaj-art-f1ef6bb16d9843c68b2ff0cd8121c6652025-02-03T01:22:15ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/131050131050Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous SolutionLu Zeng0Ligang Yang1College of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCalcium silicate hydrate based on steel slag (SCSH) and Ni-doped SCSH (NSCSH) were synthesized under specific hydrothermal conditions at saturated vapor pressure and 185°C for 7 hours. The structure and morphology of SCSH and NSCSH were characterized by XRD, SEM, and N2 adsorption/desorption. SCSH mainly consisted of amorphous calcium silicate hydrate gel (C-S-H gel) together with some flake-like tobermorite and NSCSH consisted of crystalline tobermorite and xonotlite. The addition of Ni(NO3)2 had great influence on microstructure of the composites, and SCSH possesses a mesoporous structure with slit-shaped pores, but NSCSH has narrow distributions of pore size. Furthermore, NSCSH has a higher adsorption capacity for Rhodamine B (RhB) than SCSH with removal percentages of RhB of about 52.4% and 88.2%, respectively. In addition, the effects of NSCSH dosage and pH values on the adsorption of RhB were investigated. Adsorption isotherm parameters are obtained from both Langmuir and Freundlich analysis and showed a better fit to a Langmuir model. All results indicated that NSCSH has a great potential to be a safe, easily-made, and cost-effective material for the control of RhB contamination.http://dx.doi.org/10.1155/2015/131050 |
| spellingShingle | Lu Zeng Ligang Yang Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution Journal of Chemistry |
| title | Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution |
| title_full | Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution |
| title_fullStr | Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution |
| title_full_unstemmed | Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution |
| title_short | Preparation and Characterization of Ni-Doped Calcium Silicate Hydrate Based on Steel Slag: Adsorption Capacity for Rhodamine B from Aqueous Solution |
| title_sort | preparation and characterization of ni doped calcium silicate hydrate based on steel slag adsorption capacity for rhodamine b from aqueous solution |
| url | http://dx.doi.org/10.1155/2015/131050 |
| work_keys_str_mv | AT luzeng preparationandcharacterizationofnidopedcalciumsilicatehydratebasedonsteelslagadsorptioncapacityforrhodaminebfromaqueoussolution AT ligangyang preparationandcharacterizationofnidopedcalciumsilicatehydratebasedonsteelslagadsorptioncapacityforrhodaminebfromaqueoussolution |