Abstract Herein, the photocatalytic degradation of the Congo Red (CR) and Crystal Violet (CV) dyes in an aqueous solution were discussed in the presence of an indium(III) oxide (In2O3) as optical catalyst efficiency. The caproate bidentate indium(III) precursor complex has been synthesized and well interpreted by elemental analysis, molar conductivity, Fourier transform infrared (FT-IR), UV-Vis, and thermogravimetric (TGA) with its differential thermogravimetric (DTG) studies. The microanalytical and spectroscopic assignments suggested that the associated of mononuclear complex with 1:3 molar ratio (M3+:ligand). Octahedral structure is speculated for this parent complex of the caproate anion, CH3(CH2)4COO− ligand. The In2O3 NPs with nanoscale range within 10–20 nm was synthesized by a simple, low cost and eco-friendly method using indium(III) caproate complex. Indium oxide nanoparticles were formed after calcination of precursor in static air at 600°C for 3 hrs. The structural, grain size, morphological and decolorization efficiency of the synthesized NPs were characterized using the FT-IR, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and transmission electron microscopy (TEM) analyses. It was worthy mentioned that the prepared In2O3 NPs showed a good photodegradation properties against CR and CV organic dyes during 90 min.

中文翻译：

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纳米氧化铟裂解工厂废水中污染染料的光催化剂的合成及农业应用

摘要 本文讨论了在氧化铟 (III) (In2O3) 存在下作为光催化效率的刚果红 (CR) 和结晶紫 (CV) 染料在水溶液中的光催化降解。己酸双齿铟 (III) 前驱体复合物已通过元素分析、摩尔电导率、傅里叶变换红外 (FT-IR)、紫外-可见光 (UV-Vis) 和热重 (TGA) 及其差示热重 (DTG) 研究进行合成和解释。微量分析和光谱分配表明单核复合物的相关联的摩尔比为 1:3 (M3+:配体)。推测这种己酸阴离子母体复合物 CH3(CH2)4COO− 配体为八面体结构。纳米级范围在 10-20 nm 的 In2O3 NPs 是通过简单的、使用铟（III）己酸络合物的低成本和环保方法。前体在静态空气中在 600°C 下煅烧 3 小时后形成氧化铟纳米颗粒。使用 FT-IR、X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散 X 射线分析 (EDX) 和透射电子显微镜表征合成 NPs 的结构、晶粒尺寸、形态和脱色效率(TEM) 分析。值得一提的是，制备的 In2O3 NPs 在 90 分钟内对 CR 和 CV 有机染料显示出良好的光降解性能。X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散 X 射线分析 (EDX) 和透射电子显微镜 (TEM) 分析。值得一提的是，制备的 In2O3 NPs 在 90 分钟内对 CR 和 CV 有机染料显示出良好的光降解性能。X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散 X 射线分析 (EDX) 和透射电子显微镜 (TEM) 分析。值得一提的是，制备的 In2O3 NPs 在 90 分钟内对 CR 和 CV 有机染料显示出良好的光降解性能。