Nanoparticles of Ce0.6Zr0.35Y0.05O2(CZY)solid solution have been prepared by the CTAB(hexadecyl-trimethyl ammonium bromide),CTAB-EG(ethylene glycol)templating,and CTAB-EG-NaCl(in which the pores of the precursor synth...Nanoparticles of Ce0.6Zr0.35Y0.05O2(CZY)solid solution have been prepared by the CTAB(hexadecyl-trimethyl ammonium bromide),CTAB-EG(ethylene glycol)templating,and CTAB-EG-NaCl(in which the pores of the precursor synthesized by the CTAB-EG method is filled by a certain amount of NaCl)method,respectively.The physical properties of these materials were characterized by means of tech-niques such as X-ray diffraction(XRD),high resolution scanning electron microscopy(HRSEM),transmission electron microscopy(TEM),selected area electron diffraction(SAED),and N2 adsorp-tion-desorption measurements.The CZY samples synthesized by the above three methods display wormhole-like mesoporous morphology and cubic crystal structures.The materials are narrow in pore size distribution(averaged pore diameter=5.3―7.1 nm),high in surface areas(95―119 m2/g),and large in pore volumes(0.16―0.18 cm3/g).It has been demonstrated that the introduction of NaCl is capable of retaining the pore structures of solid nanomaterials at high-temperature calcination.展开更多
基金the National Natural Science Foundation of China(Grant No.20473006)and PHR(IHLB)
摘要Nanoparticles of Ce0.6Zr0.35Y0.05O2(CZY)solid solution have been prepared by the CTAB(hexadecyl-trimethyl ammonium bromide),CTAB-EG(ethylene glycol)templating,and CTAB-EG-NaCl(in which the pores of the precursor synthesized by the CTAB-EG method is filled by a certain amount of NaCl)method,respectively.The physical properties of these materials were characterized by means of tech-niques such as X-ray diffraction(XRD),high resolution scanning electron microscopy(HRSEM),transmission electron microscopy(TEM),selected area electron diffraction(SAED),and N2 adsorp-tion-desorption measurements.The CZY samples synthesized by the above three methods display wormhole-like mesoporous morphology and cubic crystal structures.The materials are narrow in pore size distribution(averaged pore diameter=5.3―7.1 nm),high in surface areas(95―119 m2/g),and large in pore volumes(0.16―0.18 cm3/g).It has been demonstrated that the introduction of NaCl is capable of retaining the pore structures of solid nanomaterials at high-temperature calcination.