Refining Crude SiC Nanowires for Highly Efficient Nitroarene Reduction

A stepwise purification strategy (high-temperature oxidation → HF etching → H₂ reduction) can systematically remove carbon (Cₓ), silicon (Siₓ), and oxygen (Oₓ) impurities from coarse SiC nanowires, thereby significantly enhancing their performance as a Pd catalyst support. Characterization Data: XRD/FT-IR/XPS/BET/FE-SEM/TEM Catalytic Performance Test Data Reaction System: Continuous flow fixed-bed reactor, reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) Test Conditions: 0.2 mM 4-NP, 10 mM NaBH₄, flow rate 15 mL/min, catalyst 5 mg Monitoring Method: Online UV-Vis spectroscopy to monitor absorbance changes at 400 nm in real time Performance Indicators: Conversion (Con.%), Selectivity (Sel.%), Yield (%) DFT Calculations: PWmat software, PBE functional, study of the adsorption behavior and reaction pathways of 4-NP on different surfaces