CAJ | 학술논문

采用乙酰丙酮铜为原料，通过金属有机物化学气相沉积大批量制备 C/Cu 壳/核纳米颗粒，并通过反应气氛调控C壳层的厚度。将C/Cu壳/核纳米颗粒在1300℃的真空环境中退火，获得空心碳纳米球。通过透射电子显微镜、X射线衍射仪、拉曼光谱等表征手段，对退火前和退火后的样品进行对比分析，发现退火前和退火后的碳壳层的直径、厚度和石墨化程度都没有明显改变，但是样品的比表面积增大了一个数量级。因此，通过 C/Cu壳/核纳米颗粒的真空退火，是实现空心碳球可控制备的一条简易途径。
채용을선병동동위원료，통과금속유궤물화학기상침적대비량제비 C/Cu 각/핵납미과립，병통과반응기분조공C각층적후도。장C/Cu각/핵납미과립재1300℃적진공배경중퇴화，획득공심탄납미구。통과투사전자현미경、X사선연사의、랍만광보등표정수단，대퇴화전화퇴화후적양품진행대비분석，발현퇴화전화퇴화후적탄각층적직경、후도화석묵화정도도몰유명현개변，단시양품적비표면적증대료일개수량급。인차，통과 C/Cu각/핵납미과립적진공퇴화，시실현공심탄구가공제비적일조간역도경。
Cu/C core/shell nanoparticles were synthesized by metal organic chemical vapor deposition using cupric acetylacetonate as precursor. The thickness and diameter of the as-synthesized core/shell nanoparticles were controlled by the reaction atmosphere. Hollow C nanospheres were obtained by annealing the as-synthesized core/shell nanoparticles at 1300oC in vacuum. The analysis results from transmission electron microscope, X-ray diffraction, Raman spectrometer and specific surface area analyzer show that the diameter, thickness and crystallinity of the as-obtained hollow C nanoshperes are similar to those of the C shells of Cu/C core/shell nanoparticles, while the specific surface area increases by an order of magnitude. The results demonstrate that annealing Cu/C core/shell nanoparticles in vauum is a simple route for the controllable fabrication of hollow C nanospheres.