CAJ | 학술논문

以硼掺杂碳化硅(B0.1 SiC)为载体,采用循环伏安法在 B0.1 SiC 载体上电沉积 Pt 纳米粒子制备了 Pt/ B0.1 SiC 催化剂。利用 X 射线光电子能谱、X 射线衍射、氮气吸附-脱附、扫描电镜及透射电镜等测试方法对催化剂的晶型、表面性质及形貌进行了表征。结果表明,硼原子掺杂进入 SiC 晶格并取代了 Si 位点,使 B0.1 SiC 载体的导电性增强；Pt 纳米粒子均匀地分布在B SiC 载体上,平均粒径为2.7 nm。与相同条件下制备的 Pt/ SiC 催化剂相比,Pt/ B0.1 SiC 具有较大的电化学活性表面积、更高的甲醇催化氧化活性和稳定性。0.1
이붕참잡탄화규(B0.1 SiC)위재체,채용순배복안법재 B0.1 SiC 재체상전침적 Pt 납미입자제비료 Pt/ B0.1 SiC 최화제。이용 X 사선광전자능보、X 사선연사、담기흡부-탈부、소묘전경급투사전경등측시방법대최화제적정형、표면성질급형모진행료표정。결과표명,붕원자참잡진입 SiC 정격병취대료 Si 위점,사 B0.1 SiC 재체적도전성증강；Pt 납미입자균균지분포재B SiC 재체상,평균립경위2.7 nm。여상동조건하제비적 Pt/ SiC 최화제상비,Pt/ B0.1 SiC 구유교대적전화학활성표면적、경고적갑순최화양화활성화은정성。0.1
Boron-doped silicon carbide (B0. 1 SiC) synthesized by the carbothermal reduction method was usedas support to prepare Pt/ B 0. 1 SiC catalyst by cyclic voltammtric deposition of Pt nanoparticles. The crystal structure, surface property and morphology of the catalysts were studied with X-ray diffraction, X-rayphotoelectron spectroscopy , scanning electron microscopy and transmission electron microscopy techniques and adsorption-desorption experiment. It is shown that B atoms have been incorporated into the SiC lattice sites by substituting Si,which increases the electrical conductivity of SiC. Pt nanoparticles uniformly dispersed on theB SiC support with an average size of 2. 7 nm. The prepared Pt/ B0. 1 SiC had a larger electrochemically active area and exhibited higher electrocatalytic activity and stability for methanol oxidation than the Pt/ SiC synthesized by the same method. This shows that B-doped SiC is a promising support for preparing high-performance methanol oxidation electrocatalysts.