Dual-enhancement of chromaticity and thermal stability:In-situ synthesis of core-shell γ-Ce2S3@CePO4 configuration

• 作者: Kanglong Hui Wei Dong Jipeng Fu Mingxue Tang Qi Wei Chengyu Li Hongjie Zhang
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2022,（5）
• 所属期刊栏目: ADVANCED RARE EARTH MATERIALS
• 页码范围: 800-806
• 页数: 7页
• 语种: 英文

摘要

Non-toxic rare earth(RE)composite materials are promising and active in optoelectronic fields,such as pigment.In this work,Na ions doped γ-Ce2S3 pigments were synthesized by solid-phase vulcanization and followed by in-situ synthesis to prepare an outer layer of CePO4 film.The characterizations of X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),solid state nuclear magnetic resonance(NMR)indicate that Na-dopedγ-Ce2S3 and CePO4 uniformly and tightly coated core-shell structure was successfully synthesized.The thermogravimetric analysis(TG)and reflection spectrum(RS)reveal that the CePO4 coating significantly improves the colorant and thermal stability performance of γ-Ce2S3.The excellent color quality of γ-Ce2S3@CePO4(L*=45.16,a*=55.94,b*=44.53)is achieved and the red color(L*=43.82,a*=49.79,b*=38.04)is still retained even if the sample is heated in air at 400℃for 30 min.