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Facile synthesis of YbVO4, and YVO4 nanostructures through MOF route for photocatalytic applications
Inorganic Chemistry Communications ( IF 4.4 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.inoche.2020.107855
S. Vadivel , Bappi Paul , M. Kumaravel , S. Hariganesh , Saravanan Rajendran , M.M.M.G. Prasanga Gayanath Mantilaka , Gcina Mamba , P. Puviarasu

Abstract Recently, one-dimensional nanomaterials gained significant attention in environmental remediation for the degradation and removal of various toxic pollutants in water bodies. Herein in this report, we prepared good visible-light response ytterbium and yttrium vanadates (YbVO4, and YVO4) photocatalyst with unique morphologies has been synthesized using simple MOF precursor followed by calcination route. The YbVO4 exhibited bitter-gourd like structure and YVO4 presented nano-rice structure as an added advantage for photocatalytic application. The as-synthesized samples were systematically characterized by XRD studies and transmission electron microscope (TEM) analysis and UV–vis diffuse reflectance spectra (DRS) studies, respectively. These one dimensional YbVO4 and YVO4 exhibited different absorption co-efficient from the UV to visible range with bandgap energies of 2.17 eV, and. 3.15 eV, respectively. The photocatalytic activities of YbVO4 and YVO4 have been investigated towards the photodegradation of aqueous methyl orange (MO) under the visible-light irradiation. Due to higher visible light absorption capacity with a narrow bandgap value of 2.17 eV, the YbVO4 exhibited higher photocatalytic degradation ability towards the MO degradation. As a result, the YbVO4 and YVO4 showed the removal rate of about 81% and 65% removal towards the MO removal with 360 min irradiation time.

中文翻译:

通过 MOF 路线轻松合成 YbVO4 和 YVO4 纳米结构用于光催化应用

摘要 近年来,一维纳米材料在环境修复中因降解和去除水体中的各种有毒污染物而受到广泛关注。在本报告中,我们使用简单的 MOF 前驱体和煅烧路线合成了具有独特形态的良好可见光响应的钒酸钇和钒酸钇(YbVO4 和 YVO4)光催化剂。YbVO4 呈现苦瓜状结构,YVO4 呈现纳米大米结构,作为光催化应用的附加优势。合成后的样品分别通过 XRD 研究和透射电子显微镜 (TEM) 分析和紫外-可见漫反射光谱 (DRS) 研究进行系统表征。这些一维 YbVO4 和 YVO4 从紫外到可见光范围表现出不同的吸收系数,带隙能量为 2.17 eV,并且。分别为 3.15 eV。已经研究了 YbVO4 和 YVO4 在可见光照射下对水性甲基橙 (MO) 的光催化活性。由于具有更高的可见光吸收能力和 2.17 eV 的窄带隙值,YbVO4 对 MO 降解表现出更高的光催化降解能力。结果,YbVO4 和 YVO4 的去除率分别为 81% 和 65%,在 360 分钟的辐照时间下对 MO 的去除率分别为 81% 和 65%。已经研究了 YbVO4 和 YVO4 在可见光照射下对水性甲基橙 (MO) 的光催化活性。由于具有更高的可见光吸收能力和 2.17 eV 的窄带隙值,YbVO4 对 MO 降解表现出更高的光催化降解能力。结果,YbVO4 和 YVO4 的去除率分别为 81% 和 65%,在 360 分钟的辐照时间下对 MO 的去除率分别为 81% 和 65%。已经研究了 YbVO4 和 YVO4 在可见光照射下对水性甲基橙 (MO) 的光催化活性。由于具有更高的可见光吸收能力和 2.17 eV 的窄带隙值,YbVO4 对 MO 降解表现出更高的光催化降解能力。结果,YbVO4 和 YVO4 的去除率分别为 81% 和 65%,在 360 分钟的辐照时间下对 MO 的去除率分别为 81% 和 65%。
更新日期:2020-05-01
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