GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS
Using an aqueous synthesis with varying pH values and changing ion source of calcium-to-phosphorus atomic ratios to clarify precipitations was the purpose of this study. The precipitation procedures were processed in two ways; firstly, a pH range of 3.0 to 12.0 was controlled while the ion source of...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2013-03-01
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| Series: | Ceramics-Silikáty |
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| Online Access: | http://www.ceramics-silikaty.cz/2013/pdf/2013_01_014.pdf |
| _version_ | 1818364707710435328 |
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| author | WEN CHENG CHEN CHIEN PING JU WEN HSIEN CHENG JIIN HUEY CHERNLIN |
| author_facet | WEN CHENG CHEN CHIEN PING JU WEN HSIEN CHENG JIIN HUEY CHERNLIN |
| author_sort | WEN CHENG CHEN |
| collection | DOAJ |
| description | Using an aqueous synthesis with varying pH values and changing ion source of calcium-to-phosphorus atomic ratios to clarify precipitations was the purpose of this study. The precipitation procedures were processed in two ways; firstly, a pH range of 3.0 to 12.0 was controlled while the ion source of relative Ca/P ratio was kept at 2.0. Secondly, the reaction was kept alkaline with a pH of 12.0 and the value range of Ca/P ratios in the precursor ion-solutions was 1.0 to 3.0. The physicochemical properties were measured to characterize the various precipitates. Results showed that when the pH was varied, the morphology of the precipitates gradually changed to micrometer column-like shape under acidic condition and nano-scale globular-like shape in alkaline environments. By controlling the pH and Ca/P ratio of ion-sources in aqueous reactions, precipitates in biphasics of calcium carbonate/apatite and calcium hydroxide/apatite were obtained with nanometer-scale morphologies. The precipitation procedures that are used in the synthesis of the biphasics provide a simpler, safer, less expensive and more environmentally friendly than the co-precipitation by sintering processes. |
| first_indexed | 2024-12-13T22:08:39Z |
| format | Article |
| id | doaj.art-83d008576fa84557b28ceed204520b90 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-13T22:08:39Z |
| publishDate | 2013-03-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-83d008576fa84557b28ceed204520b902022-12-21T23:29:46ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472013-03-015711421GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONSWEN CHENG CHENCHIEN PING JUWEN HSIEN CHENGJIIN HUEY CHERNLINUsing an aqueous synthesis with varying pH values and changing ion source of calcium-to-phosphorus atomic ratios to clarify precipitations was the purpose of this study. The precipitation procedures were processed in two ways; firstly, a pH range of 3.0 to 12.0 was controlled while the ion source of relative Ca/P ratio was kept at 2.0. Secondly, the reaction was kept alkaline with a pH of 12.0 and the value range of Ca/P ratios in the precursor ion-solutions was 1.0 to 3.0. The physicochemical properties were measured to characterize the various precipitates. Results showed that when the pH was varied, the morphology of the precipitates gradually changed to micrometer column-like shape under acidic condition and nano-scale globular-like shape in alkaline environments. By controlling the pH and Ca/P ratio of ion-sources in aqueous reactions, precipitates in biphasics of calcium carbonate/apatite and calcium hydroxide/apatite were obtained with nanometer-scale morphologies. The precipitation procedures that are used in the synthesis of the biphasics provide a simpler, safer, less expensive and more environmentally friendly than the co-precipitation by sintering processes.http://www.ceramics-silikaty.cz/2013/pdf/2013_01_014.pdfApatitePrecipitationBiomaterialsBiphasicCalcium carbonate |
| spellingShingle | WEN CHENG CHEN CHIEN PING JU WEN HSIEN CHENG JIIN HUEY CHERNLIN GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS Ceramics-Silikáty Apatite Precipitation Biomaterials Biphasic Calcium carbonate |
| title | GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS |
| title_full | GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS |
| title_fullStr | GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS |
| title_full_unstemmed | GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS |
| title_short | GREEN SYNTHESIS OF CALCIUM AND PHOSPHATE COMPOUNDS BY VARYING pH VALUE AND Ca/P ATOMIC RATIO USING AQUEOUS PRECIPITATIONS |
| title_sort | green synthesis of calcium and phosphate compounds by varying ph value and ca p atomic ratio using aqueous precipitations |
| topic | Apatite Precipitation Biomaterials Biphasic Calcium carbonate |
| url | http://www.ceramics-silikaty.cz/2013/pdf/2013_01_014.pdf |
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