Hydroxyapatite/N-doped carbon dots/Ag3PO4 composite for improved visible-light photocatalytic performance

Q. Chang; X. Meng; S.?L. Hu; F. Zhang; J. L. Yang

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Hydroxyapatite/N-doped carbon dots/Ag₃PO₄ composite for improved visible-light photocatalytic performance

机译：羟基磷灰石/ N掺杂碳点/ Ag _{3 PO _{4 复合材料改善可见光的光催化性能}}

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In this study, a new hydroxyapatite/N-doped carbon dots/Ag₃PO₄ (HA/N-CDs/Ag₃PO₄) composite was prepared by a facile hydrothermal approach and in situ ion-exchange reaction method. The photocatalytic performance of the as-prepared samples was investigated by the degradation of methylene blue (MB) under visible light irradiation. It was found that the HA/N-CDs/Ag₃PO₄ composite exhibited much higher photocatalytic activity and stability compared with HA/N-CDs and HA/Ag₃PO₄. In addition, the effect of the amount of silver loading on the photocatalytic activity of the composite was evaluated. The experimental results showed that a higher silver loading amount led to a decrease of both the UV-Vis absorption and photocatalytic performance. A suitable content of silver loading produced the highest photocatalytic activity. The substantial improvement in the photocatalytic performance of the composite can be attributed to the synergetic effects of HA support, CDs and the formed Ag₃PO₄, which led to an increase of active sites, suppression of the electron–hole recombination, and the stability improvement of Ag₃PO₄. The HA/N-CDs/Ag₃PO₄ photocatalyst synthesized via a cost-effective route is a promising candidate in organics removal.

机译：在这项研究中，一种新的羟基磷灰石/ N掺杂碳点/ Ag _{3 PO _{4 （HA / N -CDs / Ag _{3 PO _{4 ）复合材料是通过简便的水热方法制备的，并就地离子交换反应方法。通过在可见光照射下亚甲基蓝（MB）的降解研究了所制备样品的光催化性能。结果表明，HA / N-CDs / Ag _{3 PO _{4 复合材料表现出更高的光催化活性，且与HA / N-CD和HA / Ag _{3 PO _{4 相比具有更高的稳定性。另外，评估了银负载量对复合物的光催化活性的影响。实验结果表明，较高的银负载量导致UV-Vis吸收和光催化性能的下降。合适含量的银负载产生最高的光催化活性。复合材料的光催化性能的显着改善可归因于HA载体，CD和形成的Ag _{3 PO _{4 ，导致活性位点增加，抑制了电子-空穴复合，并改善了Ag _{3 PO 的稳定性_{4 。通过 a合成的HA / N-CDs / Ag _{3 PO _{4 光催化剂具有成本效益的途径是去除有机物的有希望的候选者。}}}}}}}}}}}}}} 展开▼

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《RSC Advances》 |2017年第48期|共8页

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Q. Chang; X. Meng; S.?L. Hu; F. Zhang; J. L. Yang;
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1. Hydroxyapatite/N-doped carbon dots/Ag₃PO₄ composite for improved visible-light photocatalytic performance [J] . Q. Chang, X. Meng, S.?L. Hu, RSC Advances . 2017,第48期

机译：羟基磷灰石/ N掺杂碳点/ Ag _{3 PO _{4 复合材料改善可见光的光催化性能}}

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3. Dependence of photocatalytic performance on interfacial reaction in carbon dots/mesoporous hydroxyapatite nanocomposites [J] . Wei Xu, Shanshan Yang, Kaikai Li, Micro & nano letters . 2020,第2期

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Hydroxyapatite/N-doped carbon dots/Ag3PO4 composite for improved visible-light photocatalytic performance

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Hydroxyapatite/N-doped carbon dots/Ag₃PO₄ composite for improved visible-light photocatalytic performance