Ultra-large-scale Synthesis of Fe₃O₄ Nanoparticles and Their Application for Direct Coal Liquefaction

Ultra-large-scale synthesis of iron oxide nanoparticles (875 g) has been achieved in a single reaction via a facile solution-based dehydration process. The obtained nanoparticles capped with hydrophobic oleic acid ligands are magnetite with the average size of 5 nm. The synthesized samples exhibit a higher catalytic activity toward the direct coal liquefaction (DCL) than the commercial Fe₃O₄ powders. The conversion, oil yield, and liquefaction degree with the synthesized Fe₃O₄ nanoparticles are 89.6, 65.1, and 77.3%, respectively. The excellent catalytic performance of the synthesized Fe₃O₄ nanoparticles can be attributed to their extremely small size and high dispersity. This facile approach to prepare highly active nanocatalyst for the DCL will be applicable for future industrial processes

Additional file 1: of Humate-assisted Synthesis of MoS2/C Nanocomposites via Co-Precipitation/Calcination Route for High Performance Lithium Ion Batteries

Equations 1–5. The proposed reactions for the synthesis of MoS2. Table S1. The composition analysis of potassium humate. Figure S1. SEM images of (a) MoS2/C-600 and (b) MoS2/C-800 nanocomposite. Figure S2. High-resolution TEM image of MoS2/C-700 nanocomposite. Table S2. Comparison of electrochemical performance of MoS2-based electrodes. (DOC 2203 kb

Monodisperse Au–Fe₂C Janus Nanoparticles: An Attractive Multifunctional Material for Triple-Modal Imaging-Guided Tumor Photothermal Therapy

Imaging-guided photothermal therapy (PTT) by combination of imaging and PTT has been emerging as a promising therapeutic method for precision therapy. However, the development of multicomponent nanoplatforms with stable structures for both PTT and multiple-model imaging remains a great challenge. Herein, we synthesized monodisperse Au–Fe₂C Janus nanoparticles (JNPs) of 12 nm, which are multifunctional entities for cancer theranostics. Due to the broad absorption in the near-infrared range, Au–Fe₂C JNPs showed a significant photothermal effect with a 30.2% calculated photothermal transduction efficiency under 808 nm laser irradiation <i>in vitro</i>. Owing to their excellent optical and magnetic properties, Au–Fe₂C JNPs were demonstrated to be advantageous agents for triple-modal magnetic resonance imaging (MRI)/multispectral photoacoustic tomography (MSOT)/computed tomography (CT) both <i>in vitro</i> and <i>in vivo</i>. We found that Au–Fe₂C JNPs conjugated with the affibody (Au–Fe₂C–Z_HER2:342) have more accumulation and deeper penetration in tumor sites than nontargeting JNPs (Au–Fe₂C–PEG) <i>in vivo</i>. Meanwhile, our results verified that Au–Fe₂C–Z_HER2:342 JNPs can selectively target tumor cells with low cytotoxicity and ablate tumor tissues effectively in a mouse model. In summary, monodisperse Au–Fe₂C JNPs, used as a multifunctional nanoplatform, allow the combination of multiple-model imaging techniques and high therapeutic efficacy and have great potential for precision theranostic nanomedicines