Details

Autor(en) / Beteiligte

• Naciri, Y.
• Hsini, A.
• Ajmal, Z.
• Bouddouch, A.
• Bakiz, B.
• Navío, J.A.
• Albourine, A.
• Valmalette, J-C.
• Ezahri, M.
• Benlhachemi, A.

Titel

Influence of Sr-doping on structural, optical and photocatalytic properties of synthesized Ca3(PO4)2

Ist Teil von

• Journal of colloid and interface science, 2020-07, Vol.572, p.269-280

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2020

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• [Display omitted] •Sr ion doped Ca3(PO4)2 for varying doping wt.% (10, 20, 30, 40) was synthesized by a facile co-precipitation method.•Structural, morphologic and optical properties were studied in detail.•Photocatalytic degradation experiments were evaluated using RhB dye as a molecule model.•30 wt% Sr-Ca3(PO4)2 solid solution shows the highest photocatalytic performance for RhB degradation.•Photodegradation mechanism was discussed. Well-crystallized Ca3(PO4)2 doped and un-doped nano-particles with the maximum strontium content (40 wt% Sr) followed by calcination at 800 °C for 3 h were synthesized via facile co-precipitation method. DTA/TGA, X-ray diffraction (XRD), energy dispersive scanning electron microscopy (SEM/EDX), UV–vis diffuse reflectance spectrum (UV–vis DRS), Raman spectroscopy and photoluminescence (PL) techniques were used for material characterization. The (XRD) patterns of as-synthesized Sr-doped Ca3(PO4)2 solid solution samples exhibited a systematic shift toward lower angles by possessing a single rhombohedral crystal structure without any secondary phases. The UV light driven photocatalytic activity was assessed for rhodamine B (RhB) degradation. As a result, ultrafast photodegradation activity was observed after Sr doping. Moreover, the 30 wt% Sr-Ca3(PO4)2 sample showed the highest photocatalytic degradation among the Sr-doped Ca3(PO4)2 samples toward RhB. It was further suggested that as-synthesized 30 wt% Sr-Ca3(PO4)2 superior photocatalytic performance is ascribed to the more proficient partition of photogenerated electron-hole pairs. Furthermore, the involved mechanism of superior photocatalytic performance of the 30 wt% Sr-Ca3(PO4)2 solid solution was also investigated. In addition, regeneration cycles indicated the higher stability of the photocatalyst to be effectively recycled up to four times without any considerable reduction in photocatalytic performance. Thus, these informations further provides us a scalable pathway to fabricate Sr doped Ca3(PO4)2 and its consequent use as an efficient photocatalyst for rhodamine B (RhB) contaminated wastewater treatment.