Mild Hydrothermal Syntheses and Characterization of Nanocrystalline Titanlanthanates

Abstract

Abstract: Novel perovskite titanlanthanates, M_0.5La_0.5TiO₃ (M=Na, Ag_0.66Na_0.33, Li_0.6Na_0.4) were hydrothermally synthesized under mild conditions, and characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM), differential thermal and thermogravometric analyses(DTA-TG), inductively coupled plasma analysis(ICP) and infrared spectroscopy(IR). The ionic transport properties were measured by an ac impedance method. Some factors, e.g., crystallization temperature, pH, and Ti/La molar ratio in reaction mixture dominate the hydrothermal syntheses of the single phase products. Na_0.5La_0.5TiO₃ and Ag_0.33Na_0.17La_0.5TiO₃ crystallized in cubic system with cell parameters: a =0.3877 nm and a =0.3890 nm, respectively, whereas Li_0.3Na_0.2La_0.5TiO₃ has orthorhombic symmetry with parameters a =0.3894 nm, b =0.3912 nm and c =0.3890 nm. Under a similar experimental condition, the average particle sizes of the products are 50 nm for Na_0.5La_0.5TiO₃, 70 nm for Ag_0.33 Na_0.17La_0.5TiO₃ and 5 Lm for Li_0.3Na_0.2La_0.5TiO₃. An ac impedance study indicates that conductivities of Ag_0.33 Na _0.17La_0.5TiO₃ and Li_0.3Na_0.2La_0.5TiO₃ at 713 Kare 1×10^-5 and 1×10^-6 S/cm, respectively.

Key words: Hydrothermal syntheses, Nanocrystalline, Conductivity, Titanlanthanate

CLC Number:

O611.4

TrendMD:

MAO Ya-Chun, FENG Shou-Hua. Mild Hydrothermal Syntheses and Characterization of Nanocrystalline Titanlanthanates[J]. Chem. J. Chinese Universities, 1998, 19(3): 340.

[1]	LUO Xinyan, JIA Ruonan, XIANG Yong, ZHANG Xiaokun. Progress on the Stretchable Composite Solid Polymer Electrolytes [J]. Chem. J. Chinese Universities, 2022, 43(8): 20220149.
[2]	YAN Jiasen, HAN Xianying, DANG Zhaohan, LI Jiangang, HE Xiangming. Preparation and Performance of Paraffin/Expanded Graphite/Graphene Composite Phase Change Heat Storage Material [J]. Chem. J. Chinese Universities, 2022, 43(6): 20220054.
[3]	YANG Junge, GAO Chengqian, LI Boxin, YIN Dezhong. Preparation of High Thermal Conductivity Phase Change Monolithic Materials Based on Pickering Emulsion Stabilized by Surface Modified Graphene Oxide [J]. Chem. J. Chinese Universities, 2022, 43(2): 20210593.
[4]	WAN Ren, SONG Fan, PENG Changjun, LIU Honglai. Group Contribution Method for Infinite Dilution Molar Conductivity of Unconventional Ions in Water [J]. Chem. J. Chinese Universities, 2021, 42(12): 3672.
[5]	LI Hongbin, ZHANG Shuai, LI Zheng, DING Changjiang, BEN Teng. Synthesis and Anisotropic Proton Conduction of Porous Organic Salt Single Crystal [J]. Chem. J. Chinese Universities, 2021, 42(10): 3047.
[6]	ZHANG Ruqiang, ZHANG Guoliang, LONG Zhu, ZHANG Dan, LI Zhiqiang, WANG Shihua, HU Ailin. Preparation and Properties of Light-weight Flexible Polyimide Paper-based Electromagnetic Shielding Composites [J]. Chem. J. Chinese Universities, 2021, 42(10): 3211.
[7]	SUN Qiangqiang, CAO Baoyue, ZHOU Chunsheng, ZHANG Guochun, WANG Zenglin. Enhancing Hydrogen Evolution Performance of a Regular Cube NiCu Nanocrystalline Electrocatalyst Fabricated by Normal Pluse Electrodeposition ^† [J]. Chem. J. Chinese Universities, 2020, 41(6): 1287.
[8]	XIE Fan,WANG Yafang,ZHUO Longhai,QIN Panliang,NING Doudou,WANG Danni,LU Zhaoqing. Preparation and Properties of High Thermal Conductivity Hexagonal Boron Nitride/Aramid Fibrid Composite Film ^† [J]. Chem. J. Chinese Universities, 2020, 41(3): 582.
[9]	LING Xuxia, LONG Zhu, WANG Shihua, LI Zhiqiang, GUO Shuai, ZHANG Dan. Surface Modified Aramid Pulp with Polyaniline and Conductivity of Its Paper-based Materials [J]. Chem. J. Chinese Universities, 2020, 41(11): 2553.
[10]	SONG Xipeng, LIU Jinyu, WANG Lihua, HAN Xutong, HUANG Qinglin. Preparation of Polybenzimidazole/Polyvinylpyrrolidone Proton Exchange Membranes for Vanadium Redox Flow Battery^† [J]. Chem. J. Chinese Universities, 2019, 40(7): 1543.
[11]	ZHU Yuxin,HARAGIRIMANA Alphonse,LU Yao,BUREGEYA Ingabire Providence,NING Cong,LI Na,HU Zhaoxia,CHEN Shouwen. Preparation and Properties of Filling-type Sulfonated Poly(arylene ether sulfone)/Poly(ether sulfone) Composite Membranes with Microporous Structures^† [J]. Chem. J. Chinese Universities, 2019, 40(5): 1051.
[12]	CHENG Yingying,LIU Haiying,TIAN Yigeng,LIU Zhongqi,LI Qingxin. Theoretical Study on Enhancement Effect of Amino Modification of Adenine on Conductivity of DNA^† [J]. Chem. J. Chinese Universities, 2019, 40(2): 279.
[13]	GUAN Mingming,CHEN Jia,TANG Shaokun. Synthesis and Performance of Novel Bis-functional Cross-linked Anion Exchange Membranes^† [J]. Chem. J. Chinese Universities, 2018, 39(9): 2054.
[14]	XU Yixin, ZHANG Dengji, YE Niya, YANG Jingshuai, HE Ronghuan. Phosphonium-based Crosslinked Poly(aryl ether ketone) Anion Exchange Membranes with 1,4-Bis(diphenylphosphino)butane as the Crosslinker^† [J]. Chem. J. Chinese Universities, 2017, 38(10): 1872.
[15]	ZHANG Boyuan, GUO Zhaoxia, YU Jian. Effects of Glass Fiber on Electrical Conductivities of Multiwalled Carbon Nanotube-filled Polymer/Thermoplastic Polyurethane Blends [J]. Chem. J. Chinese Universities, 2016, 37(6): 1216.

Mild Hydrothermal Syntheses and Characterization of Nanocrystalline Titanlanthanates

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments