An autocombustion technique was adopted to synthesize the Perovskite structured Lanthanum iron oxide nanoparticles (LaFeO₃, abbreviated as LFO NPs). This technique offered lots of benefits such as short reaction time along with quick heating rate. LFO NPs were fabricated at different calcination temperatures (300‐800 °C) through the aid of sucrose as chelating agent. The prepared LFO NPs were well characterized by various techniques like X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), Vibrating sample magnetometer (VSM), Ultraviolet‐Visible spectroscopy (UV‐Vis), Brunauer–Emmett–Teller (BET), X‐ray Photo‐Electron Spectroscopy (XPS) and Transmission electron microscopy (TEM) which affirmed that highly crystalline LFO NPs were obtained at 700 °C. Subsequently, the catalytic activity of the LFO NPs was surveyed for three independent approaches: (i) for the synthesis of functionalized piperidines through activation of carbonyl groups in the reacting partners (ii) for the sunlight‐assisted mineralization of health hazardous food colorant, Allura Red AC (iii) for the hydrogenation of nitro aromatic compounds (NACs) using NaBH₄ (sodium borohydride) as source of hydrogen in aqueous medium at room temperature.

中文翻译：

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自燃促进的氧化镧铁的合成：作为多相催化剂用于合成哌啶，取代的胺和光辅助降解

采用自动燃烧技术合成钙钛矿结构的镧铁氧化物纳米粒子（LaFeO ₃，缩写为LFO NP）。该技术具有许多优点，例如反应时间短和加热速度快。借助蔗糖作为螯合剂，可以在不同的煅烧温度（300-800°C）下制造LFO NP。制备的LFO NP通过各种技术进行了很好的表征，例如X射线衍射（XRD），傅立叶变换红外光谱（FT-IR），振动样品磁力计（VSM），紫外可见光谱（UV-Vis），Brunauer-Emmett- Teller（BET），X射线光电子能谱（XPS）和透射电子显微镜（TEM）证实了在700°C下获得了高度结晶的LFO NP。随后，针对三种独立的方法对LFO NP的催化活性进行了调查：在室温下在水性介质中作为氢源使用₄（硼氢化钠）。