期刊
CRYSTENGCOMM
卷 20, 期 10, 页码 1405-1410出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ce01737e
关键词
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资金
- FAPESP [2014/09087-4, 2014/50279-4, 2015/20434-0]
- CNPq [401218-2014-7, 311803/2015-6]
- Danish Council for Independent Research \ Technology and Production Sciences [48293]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [14/09087-4] Funding Source: FAPESP
Herein we report for the first time the synthesis of ceramic-organic three-dimensional (3D) layered gadolinium-doped cerium oxide (Ce1-XGdXO2-delta,CGO) and its exfoliation into two-dimensional (2D) nano-sheets. We adopt a water-based synthetic route via a homogenous precipitation approach at low temperatures (10-80 degrees C). The reaction conditions are tuned to investigate the effects of thermal energy on the final morphology. A low temperature (40 degrees C) morphological transition from nanoparticles (1D) to two-dimensional (2D) nanosheets is observed and associated with a low thermal energy transition of ca. 2.6 kJ mol(-1). For the 3D-layered material, exfoliation experiments are conducted in water/ethanol solutions. Systems at volume fractions ranging from 0.15 to 0.35 are demonstrated to promote under ultrasonic treatment the delamination into 2D nanosheets.
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