Effect of Fe3+ substitution on the structural modification and band structure modulated UV absorption of hydroxyapatite

被引：24

作者：

Hadagalli, Komalakrushna ^{[1
]}

Shenoy, Sulakshana ^{[2
]}

Shakya, Kaushal R. ^{[1
]}

Manjunath, G. ^{[1
]}

Tarafder, Kartick ^{[2
]}

Mandal, Saumen ^{[1
]}

Basu, Bikramjit ^{[3
,4
]}

机构：

[1] Natl Inst Technol Karnataka NITK, Dept Met & Mat Engn, Surathkal 575025, India

[2] Natl Inst Technol Karnataka, Dept Phys, Surathkal, India

[3] Indian Inst Sci, Mat Res Ctr, Lab Biomat, Bangalore 560012, Karnataka, India

[4] Indian Inst Sci, Ctr BioSyst Sci & Engn, Bangalore, Karnataka, India

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2021年 / 18卷 / 02期

关键词：

absorption; bandgap; doping; Hydroxyapatite; structure; sunscreen filter; OPTICAL-PROPERTIES; DOPED HYDROXYAPATITE; IRON; SKIN; NANOPARTICLES; SUNSCREENS; METALS;

D O I：

10.1111/ijac.13674

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of Fe3+ ionic substitution in hydroxyapatite (Ca10-xFex(PO4)(6)(OH)(2)) was studied using structural modifications, resulting in an improvement in UV absorption through a tailored optical band structure. Ca2+ of HA being larger compared to Fe3+ contributes to the shrinkage of the lattice. Undoped HA has a peak at 1085 cm(-1) (v(3) PO43-) which is shifted to 1033 cm(-1) for Fe-HA, because of the perturbation in HA structure. An improvement of UV absorption in the entire UVA and UVB range with an increase in Fe content because of a decrease in bandgap from 5.9 eV to 2.1 eV with undoped and doped HA. Theoretically obtained band gap and optical behaviour of the systems are well correlated with the experimental findings. Moreover, the use of marine biowaste from cuttlefish bone, as the source of HA; low cost and promising UV absorption can have a potential application as UV protective sunscreen filters.

引用

页码：332 / 344

页数：13

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