Vani Omkar V, Palve Anil M
Department of Chemistry, Mahatma Phule Arts, Science, and Commerce College, Panvel, Navi-Mumbai, Maharashtra 410206, India.
ACS Omega. 2022 Jul 22;7(30):26632-26640. doi: 10.1021/acsomega.2c02824. eCollection 2022 Aug 2.
Noble metal, semiconductor, or metal-free nanomaterials have shown promising applicability as potential photocatalyst materials. A one-step process has been established for the synthesis of layered molybdenum (meta)phosphate [MoO(PO)] using a solvothermal method. The nanopowders were characterized by X-ray diffraction (XRD), UV-visible spectroscopy (UV-vis), scanning electron microscopy (SEM), infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL), surface area analysis (Brunauer-Emmett-Teller (BET)), electron spin resonance (ESR), and high-resolution transmission electron microscopy (HRTEM). Through this study, we demonstrate the use of MoO(PO) as a photocatalyst for wastewater treatment. The photoreduction of toxic Cr to Cr by layered molybdenum (meta)phosphate is investigated using formic acid as a scavenger. This catalyst has also been used for photodegrading organic dyes like methylene blue. MoO(PO) has been shown to complete photoreduction of toxic Cr to Cr in 6 min and achieved 78% degradation efficiency for methylene blue in 36 min. The reactive species trapping experiments revealed that the key active species like O , OH, and h can exist and play an important role in methylene blue photodegradation.
贵金属、半导体或无金属纳米材料作为潜在的光催化剂材料已显示出有前景的适用性。已建立了一种使用溶剂热法合成层状钼（偏）磷酸盐[MoO(PO)]的一步法。通过X射线衍射（XRD）、紫外可见光谱（UV-vis）、扫描电子显微镜（SEM）、红外光谱（IR）、X射线光电子能谱（XPS）、光致发光光谱（PL）、表面积分析（布鲁诺尔-埃米特-泰勒（BET））、电子自旋共振（ESR）和高分辨率透射电子显微镜（HRTEM）对纳米粉末进行了表征。通过这项研究，我们展示了MoO(PO)作为光催化剂用于废水处理的应用。使用甲酸作为清除剂研究了层状钼（偏）磷酸盐将有毒的Cr光还原为Cr的过程。该催化剂还用于光降解亚甲基蓝等有机染料。已证明MoO(PO)在6分钟内可将有毒的Cr完全光还原为Cr，并在36分钟内实现了对亚甲基蓝78%的降解效率。活性物种捕获实验表明，关键活性物种如O 、OH和h可以存在并在亚甲基蓝光降解中发挥重要作用。
