Synthesis of β-type Strontium Hydrogen Phosphate Nanosheets and Its Immobilization of Pb2+ in Acidic Aqueous Solution

Zhuang, Fuqiang; Tan, Ruiqin; Shen, Wenfeng; Zhang, Xianpeng; Xu, Wei; Song, Weijie

doi:10.1007/s40195-015-0214-z

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…7). Although the method of preparing the powders is different, there is a noteworthy matching of the results with those from previous studies, particularly the XRD traces (Zhuang et al, 2015). Figure 5 shows the formation of structural water corresponding to SrHPO 4 in the second stage of Sr replacement, from 50% to 100%.…”

Section: The First Phase (Sr/ca <1)supporting

confidence: 69%

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Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system

et al. 2020

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Brushite (CaHPO4.2H2O) is an important calcium phosphate encountered in bone tissue engineering and bone cement formulation. There are many studies on the synthesis and characterization of brushite, but full-scale substitution and replacement of Ca by Sr in brushite as a key element in medical and environmental applications has not yet been explored systematically. Therefore, this study aims to evaluate the effects of substitution of Ca by Sr on the microstructural and thermal properties of brushite, including the chemical phases present, crystallization, structural water and phase stability. The chemical phases were determined by means of powder X-ray diffraction. The thermal properties were studied by thermogravimetric analysis. Crystallization and surface morphology were analysed using scanning electron microscopy. Various properties were dependent on the incorporated Sr ions. The replacement percentage of Sr may be divided into two major stages: the first from 0% to 50%; and the second from 50% up to 100%. The (Ca x Sr1–x)HPO4.nH2O shows that micro-scale crystals of platy brushite formed in the first stage of Sr replacement, from 0% up to 50%. As Sr might inhibit the formation of crystals, crystal nucleation rates were reduced as the Sr percentage increased. An amorphous product formed as a result of 50% Sr replacement. The second stage of Sr replacement with Sr contents >50% yielded a new crystal morphology corresponding mainly to SrHPO4.nH2O. The complete replacement of Ca by Sr transforms the brushite with platy microcrystals into SrHPO4 nanosheets.

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Section: The First Phase (Sr/ca <1)supporting

confidence: 69%

“…6) is consistent with the standard data of β-type SrHPO 4 (JCPDS Card No. 12-0368), indicating that the obtained sample had a purely hexagonal crystal structure (Zhuang et al , 2015). The SEM images show that sample BSr10 is composed of nanosheets (Fig.…”

Section: Resultsmentioning

confidence: 99%

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system

et al. 2020

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“…Mineral analysis of specimens by XRD with brushite (RRUFFID = R070554), hydroxyapatite (RRUFFID = R060180), monetite, 29 and SrHPO4 (JCPDS 12–0368 according to 30‐32 ) as reference (b)…”

Section: Resultsmentioning

confidence: 99%

“…For S 0:10 (Figure 6) an agreement with γ‐SrHPO4 in der Raumgruppe Pbca (ICSD 91129) was found. Furthermore, the assignment of SrHPO 4 (ICDD # 00‐012‐0368) was made according to the publications of Wang et al, Zhuang et al and Roming et al 30‐32 …”

Section: Resultsmentioning

confidence: 99%

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Strontium substitution of gelatin modified calcium hydrogen phosphates as porous hard tissue substitutes

Kruppke

Heinemann

Gebert

et al. 2020

J Biomedical Materials Res

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Aiming at the generation of a high strontium‐containing degradable bone substitute, the exchange of calcium with strontium in gelatin‐modified brushite was investigated. The ion substitution showed two mineral groups, the high‐calcium containing minerals with a maximum measured molar Ca/Sr ratio of 80%/20% (mass ratio 63%/37%) and the high‐strontium containing ones with a maximum measured molar Ca/Sr ratio of 21%/79% (mass ratio 10%/90%). In contrast to the high‐strontium mineral phases, a high mass loss was observed for the calcium‐based minerals during incubation in cell culture medium (alpha‐MEM), but also an increase in strength owing to dissolution and re‐precipitation. This resulted for the former in a decrease of cation concentration (Ca + Sr) in the medium, while the pH value decreased and the phosphate ion concentration rose significantly. The latter group of materials, the high‐strontium containing ones, showed only a moderate change in mass and a decrease in strength, but the Ca + Sr concentration remained permanently above the initial calcium concentration in the medium. This might be advantageous for a future planned application by supporting bone regeneration on the cellular level.

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Hierarchical flower-like SrHPO4 electrodes for the photoelectrochemical degradation of Rhodamine B

et al. 2020

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Synthesis of β-type Strontium Hydrogen Phosphate Nanosheets and Its Immobilization of Pb2+ in Acidic Aqueous Solution

Cited by 15 publications

References 29 publications

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system

Strontium substitution of gelatin modified calcium hydrogen phosphates as porous hard tissue substitutes

Hierarchical flower-like SrHPO4 electrodes for the photoelectrochemical degradation of Rhodamine B

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Synthesis of β-type Strontium Hydrogen Phosphate Nanosheets and Its Immobilization of Pb2+ in Acidic Aqueous Solution

Cited by 15 publications

References 29 publications

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (CaxSr1–x)HPO4.nH2O system

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (CaxSr1–x)HPO4.nH2O system

Strontium substitution of gelatin modified calcium hydrogen phosphates as porous hard tissue substitutes

Hierarchical flower-like SrHPO4 electrodes for the photoelectrochemical degradation of Rhodamine B

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Product

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Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system

Effects of the full-scale substitution of strontium for calcium on the microstructure of brushite: (Ca_xSr_1–x)HPO₄.nH₂O system