Ca/Ti摩尔比对CaTiO<sub>3</sub>枝晶结构和光催化性能的影响

doi:10.11901/1005.3093.2016.225

材料研究学报

2017, Vol. 31

Issue (4): 279-284 DOI: 10.11901/1005.3093.2016.225

研究论文

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Ca/Ti摩尔比对CaTiO₃枝晶结构和光催化性能的影响

董伟霞^1,²(

), 赵高凌², 包启富¹, 顾幸勇¹

1 景德镇陶瓷大学材料科学与工程学院景德镇 333001
2 硅材料国家重点实验室浙江大学材料科学与工程系杭州 310027

Effect of Ca/Ti Molar Ratio on Structure and Photocatalytic Properties of CaTiO₃ with Dendrite Structure

Weixia DONG^1,²(

), Gaoling ZHAO², Qifu BAO¹, Xingyong GU¹

1 Department of Materials Science and Engineering, Jingdezhen Ceramic Institute,Jingdezhen 333001, China
2 State Key Lab of Silicon Material & Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

引用本文:

董伟霞, 赵高凌, 包启富, 顾幸勇. Ca/Ti摩尔比对CaTiO₃枝晶结构和光催化性能的影响[J]. 材料研究学报, 2017, 31(4): 279-284.
Weixia DONG, Gaoling ZHAO, Qifu BAO, Xingyong GU. Effect of Ca/Ti Molar Ratio on Structure and Photocatalytic Properties of CaTiO₃ with Dendrite Structure[J]. Chinese Journal of Materials Research, 2017, 31(4): 279-284.

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摘要:

控制Ca/Ti摩尔比,用溶剂热法制备了CaTiO₃枝晶结构。使用XRD、SEM和FT-IR图谱等手段表征枝晶的结构,并用紫外-可见吸收光谱测试了样品的光学性能和光催化性能。结果表明：Ca/Ti摩尔比对样品的形貌有很大的影响。随着Ca/Ti摩尔比的增加,CaTiO₃晶体的形貌发生从片状依次变化为聚集长柱体和枝晶结构。这种形貌的演变是“定位自组装并伴随奥斯瓦德熟化”向“溶解”扩散机制的转化所致。当钛过量时(Ca/Ti摩尔比为1/2~1/1.5),样品由片状和不规则聚集长柱体组成;随着钛含量的减少,片状结构向聚集不规则的长柱体过渡;当钙钛摩尔比为1/1~1.2/1时,样品呈现出枝晶结构。随着钙/钛摩尔比的增加,枝晶的发育越来越明显。但是当钙过量时(Ca/Ti摩尔比为1.25/1~2/1)溶液中大量过剩的Ca²⁺为Ca₃Ti₂O₇和CaCO₃相的生成提供了条件,使样品的枝晶结构发育更完善。当钙/钛摩尔比为1.2/1时,纯CaTiO₃枝晶呈现出最大的降解率0.0187 min^-1。这种枝晶结构呈现微纳结构,因此便于存储和回收。

关键词 ：无机非金属材料, CaTiO₃枝晶结构, Ca/Ti摩尔比, 溶剂热法, 光催化性能

Abstract：

Calcium titanite CaTiO₃ with dendrite structure were prepared by solvothermal method while adjusting the molar ratio of Ca/Ti. The microstructure and optical performance of the prepared CaTiO₃ were characterized by means of X-ray diffractometer (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared (FT-IR) spectrometer and UV-visible (UV-vis) spectrophotometer. The results show that Ca/Ti molar ratio has an important effect on the morphologies and phases of the prepared CaTiO₃. The morphology of the obtained CaTiO₃ changed from nano-sheets to aggregated prisms and then to butterfly-like dendrite structure with the increasing Ca/Ti molar ratio. The mechanism for the CaTiO₃ morphology changes was atributed to the transformation from the oriented self-assembly accompanied by Ostwald ripening to the diffusion-controlled process of “dissolution”. When Ca/Ti molar ratio is 1/2-1/1.5, the prepared CaTiO₃ is composed of nanosheets and aggregated irregular prisms. With the increase of Ca/Ti molar ratio, nanosheets transforms to irregular prisms. When Ca/Ti molar ratio is 1/1-1.2/1, the prepared CaTiO₃ exhibited mainly dendritic morphology, which was gradually developed with the increasing Ca/Ti molar ratio. When the Ca/Ti molar ratio rises to 1.25/1 and 2/1, the phases of Ca₃Ti₂O₇ and CaCO₃ appear due to the excess amount of Ca²⁺ ions in the solutions. When Ca/Ti molar ratio is 1.2/1, pure CaTiO₃ with dendrite structure, as a micrometer-scale structured material, showed the optimum value of 0.0187 min^-1 for the photocatalytic degradation, which is much convenient for storage and handling.

Key words： inorganic non-metallic materials CaTiO₃ dendrites Ca/Ti molar ratio solvothermal method photocatalytic properties

收稿日期: 2016-04-25

ZTFLH:

TB321

基金资助:国家自然科学基金(51502119),江西省重大自然科学基金(20152ACB21022),江西省科级合作领域重点项目(20161BBH80048),江西省教育厅项目(GJJ14629),景德镇市科技局项目(701301-352)

作者简介:

作者简介董伟霞,女,1977年生,副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.225 或 https://www.cjmr.org/CN/Y2017/V31/I4/279

图1 不同钙钛比样品的XRD图谱

图2 不同钙钛摩尔比样品的FESEM照片

图3 CaTiO3样品的低倍FESEM 图、单个蝴蝶状枝晶的TEM 图和单个蝴蝶状枝晶圆圈所示的HRTEM图和 SAED图谱(插图)

表1 不同Ca/Ti比样品的晶体结构、形貌和比表面积

图4 不同Ca/Ti摩尔比样品的FT-IR谱图

图5 不同钙钛比样品的光催化性能

图6 不同钙钛比样品的光催化性能

[1]	Wang Y, He Y, Lai Q, et al.Review of the progress in preparing nano TiO2: An important environmental engineering material[J]. Journal of Environmental Sciences, 2014, 26(11): 2139
[2]	Gao L, Zheng S, Zhang Q H.Nano Titanium Oxide Photocatalytic Materials and Its Application [M]. Beijing: Chemical Industry Press, 2002(高濂, 郑珊, 张青红. 纳米氧化钛光催化材料及其应用[M]. 北京: 化学工业出版社, 2002)
[3]	Modeshia D R, Walton R L.Solvothermal synthesis of perovskites and pyrochlores: crystallization of functional oxides under mild conditions[J]. Chem. Soc. Rev., 2010, 39, 4305
[4]	Sayad N, Saadi A, Nemouchi S, et al.Hydrogenation/hydrogenolysis of benzaldehyde over CaTiO3 based catalysts[J]. Stud. Sur. Sci. Catal., 2010, 175, 377
[5]	Zhao H, Duan Y, Sun X.Synthesis and characterization of CaTiO3 particles with controlled shape and size[J]. New J. Chem., 2013, 37, 986
[6]	Dong W X, Song B, Meng W J, et al.A simple solvothermal process to synthesize CaTiO3 microspheres and its photocatalytic properties[J]. Appl. Phys. A-mater., 2015, 349, 272
[7]	Zhong W Z, Liu G Z, Shi E W.Crystal growth under hydrothermal conditions and its formation[J]. Science China (B), 1994, 24, 394(仲维卓, 刘光照, 施而畏, 在热液条件下晶体的生长基元与晶体形成机理[J]. 中国科学(B辑), 1994, 24, 394)
[8]	Shi E W, Zhong W Z, Hua X K.Growth model of the anion coordination polyhedron[J]. Science China (E), 1998, 28(1): 37(施而畏, 仲维卓, 华素坤. 关于负离子配位多面体生长基元模型[J]. 中国科学(E辑), 1998, 28(1): 37)
[9]	Huang Y J, Tsai M C, Chiu H T, et al.Artificial synthesis of platelet-like kassite and its transformation to CaTiO3[J]. Cryst. Growth Des., 2010, 10, 1221
[10]	Dong W X, Zhao G L, Song B, et al.Surfactant-free fabrication of CaTiO3 butterfly-like dendrite via a simple one-step hydrothermal route[J]. Cryst. Eng. Comm., 2012, 14, 6990
[11]	Duffy G M, Pillai S C, McCormack D E. The effect of the rate of precursor production on the purity and aggregation morphology of nanoparticulate zinc oxide[J]. J. Mater. Chem., 2007, 17, 181
[12]	Musi? S,Goti? M, Ivanda M, et al.Chemical and micro structural properties of TiO2 synthesized by sol-gel procedure[J]. Mater. Sci. Eng. B, 1997, 47, 33
[13]	Nakamoto K.Infrared and raman spectra of inorganic and coordination compounds[M]. Toronto: A Wiley-Interscience Publication, 1997
[14]	Hashim M, Hu C G, Wang X, et al.Synthesis and photocatalytic property of lead molybdate dendrites with exposed (001) facet[J]. Appl. Surf. Sci., 2012, 285(15), 5858
[15]	Tang J, Zou Z, Ye J.Efficient photocatalytic decomposition of organic contaminants over CaBi2O4 under visible-light irradiation[J]. Angew. Chem. Int. Ed., 2004, 43, 4463

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