Abstract In recent years, two-dimensional (2D) material architecture has captivated attention of photocatalytic-industry due to their unique chemical-, effective purification-, and efficient effluent properties. Herein, we report, nano composites of reduced graphene oxide (rGO) incorporated with different w/w % of tellurium (Te) that were synthesized and assessed for their photocatalytic application. Notably, 3% w/w Te-rGO showed superior photocatalytic behaviour over others due to passivation of oxygen in rGO at that composition. Initially, graphene oxide (GO) was reduced to rGO by in-situ variable, 1–11% w/w, Te incorporation. The homogeneous dispersion of Te resulted complete oxidization during redox process. Morphological analysis carried out by scanning (SEM) and transmission electron microscopy (HRTEM) showed surface modification compounded with uniform distribution of spherical Te-clusters within rGO. Infrared (IR) and Raman analysis suggested recovery of disorder at oxygen sites by Te within layers and edges. Diffuse reflectance spectra (DRS) studies showed optical bandwidth of rGO (3%) to be ~5 (2.5) eV and, eventually, reduced to ~1.7 after methylene blue dye degradation. The degradation parameters were studied for molecular composition, amount of catalyst, and quantity of dye utilized under normal solar irradiance. At 3%, peculiar photocatalytic behaviour has been observed with >70% of dye degradation for 150 min compounded with maximum decay at low weight fraction (10 mg) at 10 ppm of dye. The catalyst is reusable. Details of the analysis are presented.

中文翻译：

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用于高效光催化流出物的碲还原氧化石墨烯二维 (2D) 结构：工业废水解决方案

摘要 近年来，二维 (2D) 材料结构由于其独特的化学性质、有效净化和高效的出水特性而引起了光催化行业的关注。在此，我们报告了还原氧化石墨烯 (rGO) 与不同 w/w % 碲 (Te) 的纳米复合材料，这些复合材料已合成并评估其光催化应用。值得注意的是，由于在该组成下 rGO 中的氧钝化，3% w/w Te-rGO 表现出优于其他产品的光催化性能。最初，氧化石墨烯 (GO) 通过原位变量 (1–11% w/w) 掺入 Te 被还原为 rGO。Te 的均匀分散导致在氧化还原过程中完全氧化。通过扫描 (SEM) 和透射电子显微镜 (HRTEM) 进行的形态学分析表明，表面改性与 rGO 内球形 Te 团簇的均匀分布相结合。红外 (IR) 和拉曼分析表明，层和边缘内的 Te 在氧位点处恢复了无序。漫反射光谱 (DRS) 研究表明 rGO (3%) 的光学带宽为 ~5 (2.5) eV，并最终在亚甲蓝染料降解后降至 ~1.7。研究了在正常太阳辐照度下使用的分子组成、催化剂量和染料量的降解参数。在 3% 时，观察到特殊的光催化行为，在 150 分钟内>70% 的染料降解与在 10 ppm 染料的低重量分数 (10 毫克) 下最大衰减复合。催化剂可重复使用。