Aiming at developing photoactive materials on the photocatalytic reduction of CO₂ with H₂ under UV light, iron-doped hydroxyapatites were evaluated through online diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) coupled with quadrupole mass spectrometer (QMS). The photocatalysts with iron content ranging from 0 to 26 wt% had a specific surface in the range of 32.6–128.0 m².g⁻¹ and bandgap energy values between 2.08 and 4.92 eV, respectively. Mossbauer spectroscopy combined with X-ray diffraction results confirmed the iron dispersion in the hydroxyapatite structure even in the sample with the highest metal content. The production of H₂O, CO, and O₂ confirmed all photocatalysts were actives for CO₂ reduction. However, only the ≥ 10 wt% iron content samples presented selectivity for CH₄ and C₂H₄ on this photoreaction. These results revealed iron-modified hydroxyapatite as a selective photocatalyst to obtain hydrocarbons.

为开发紫外光下H _{2光催化还原CO 2}的光活性材料，采用在线漫反射红外傅里叶变换光谱（DRIFTS）结合四极杆质谱仪（QMS）对铁掺杂羟基磷灰石进行了评价。铁含量在 0 到 26 wt% 之间的光催化剂具有 32.6 到 128.0 m ² .g ^-1范围内的比表面和 2.08 到 4.92 eV 之间的带隙能量值。穆斯堡尔光谱结合 X 射线衍射结果证实了铁分散在羟基磷灰石结构中，即使在金属含量最高的样品中也是如此。H ₂ O、CO和O _2的产生证实所有光催化剂都是CO ₂还原的活性物质。然而，只有 ≥ 10 wt% 的铁含量样品在该光反应中表现出对 CH ₄和 C ₂ H _{4的选择性。}这些结果揭示了铁改性的羟基磷灰石作为一种选择性光催化剂来获得碳氢化合物。