Synthesis, characterization and catalytic properties of copper-substituted hydroxyapatite nanocrystals

被引：62

作者：

Othmani, Masseoud ^{[1
,2
]}

Bachoua, Hassen ^{[1
]}

Ghandour, Yassin ^{[1
]}

Aissa, Abdallah ^{[1
,3
]}

Debbabi, Mongi ^{[1
]}

机构：

[1] Univ Monastir, Lab Physicochemistry Mat, Monastir, Tunisia

[2] Univ Hafr Al Burin, Coll Sci & Arts Nairiyah, Dept Chem, Hafar Al Batin, Saudi Arabia

[3] Jeddah Univ, Fac Sci & Arts Khulais, Dept Chem, POB 255, Jeddah, Saudi Arabia

来源：

MATERIALS RESEARCH BULLETIN | 2018年 / 97卷

关键词：

Hydroxyapatite; Copper; Substitution; Nanocrystals; Catalyst; CALCIUM HYDROXYAPATITE; LOADED HYDROXYAPATITE; DOPED HYDROXYAPATITE; SURFACE MODIFICATION; OXIDATION; ZINC; CRYSTALLIZATION; NANOPARTICLES; EFFICIENT; ALCOHOLS;

D O I：

10.1016/j.materresbull.2017.09.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Copper-substituted calcium in hydroxyapatite nanocrystals (CuHAp) were synthesized by co-precipitation method and characterized using various analyses. Structural and chemical characterizations indicate that copper was quantitatively incorporated into the HAp structure, replacing calcium up to 15 at.%. The presence of copper in the HAp structure affected clearly its crystallinity and reduced its crystallite sizes. Rietveld analysis showed a regular decrease of the CuHAp cell parameters a and c. Moreover, this substitution caused a shift in the infrared absorption bands and the nuclear magnetic resonance signals of phosphate groups and a decrease in the thermal stability. Morphological characterizations indicated that the prepared CuHAp consists of extremely thin needle shaped nanocrystals with a greater aggregation, and confirmed the decrease in crystal size that was associated to the increasing in the surface area. The prepared CuHAp nanocrystals showed a high catalytic effect (up to 70%) in the discoloration of the Naphthol Blue Black solutions.

引用

页码：560 / 566

页数：7

共 37 条

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